semantic

- Replaced @TIER: TRIVIAL with @COMPLEXITY: 1
- Replaced @TIER: STANDARD with @COMPLEXITY: 3
- Replaced @TIER: CRITICAL with @COMPLEXITY: 5
- Manually elevated specific critical/complex components to levels 2 and 4
- Ignored legacy, specs, and node_modules directories
- Updated generated semantic map

.ai/shots/backend_route.py

@@ -1,10 +1,9 @@
 #[DEF:BackendRouteShot:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: Route, Task, API, Async
 # @PURPOSE: Reference implementation of a task-based route using GRACE-Poly.
 # @LAYER: Interface (API)
-# @RELATION: IMPLEMENTS -> [DEF:Std:API_FastAPI]
-# @INVARIANT: TaskManager must be available in dependency graph.
+# @RELATION: [IMPLEMENTS] ->[API_FastAPI]
 
 from typing import Dict, Any
 from fastapi import APIRouter, Depends, HTTPException, status
@@ -25,15 +24,13 @@ class CreateTaskRequest(BaseModel):
 # [/DEF:CreateTaskRequest:Class]
 
 # [DEF:create_task:Function]
+# @COMPLEXITY: 4
 # @PURPOSE: Create and start a new task using TaskManager. Non-blocking.
-# @DATA_CONTRACT: Input -> CreateTaskRequest, Output -> Task
+# @RELATION: [CALLS] ->[task_manager.create_task]
 # @PRE: plugin_id must match a registered plugin.
 # @POST: A new task is spawned; Task object returned immediately.
 # @SIDE_EFFECT: Writes to DB, Triggers background worker.
-#
-# @UX_STATE: Success -> 201 Created
-# @UX_STATE: Error(Validation) -> 400 Bad Request
-# @UX_STATE: Error(System) -> 500 Internal Server Error
+# @DATA_CONTRACT: Input -> CreateTaskRequest, Output -> Task
 @router.post("/tasks", response_model=Task, status_code=status.HTTP_201_CREATED)
 async def create_task(
     request: CreateTaskRequest,

.ai/shots/critical_module.py

@@ -1,9 +1,9 @@
 # [DEF:TransactionCore:Module]
-# @TIER: CRITICAL
+# @COMPLEXITY: 5
 # @SEMANTICS: Finance, ACID, Transfer, Ledger
 # @PURPOSE: Core banking transaction processor with ACID guarantees.
 # @LAYER: Domain (Core)
-# @RELATION: DEPENDS_ON -> [DEF:Infra:PostgresDB]
+# @RELATION: [DEPENDS_ON] ->[PostgresDB]
 #
 # @INVARIANT: Total system balance must remain constant (Double-Entry Bookkeeping).
 # @INVARIANT: Negative transfers are strictly forbidden.
@@ -33,14 +33,13 @@ class TransferResult(NamedTuple):
     new_balance: Decimal
 
 # [DEF:execute_transfer:Function]
+# @COMPLEXITY: 5
 # @PURPOSE: Atomically move funds between accounts with audit trails.
-# @DATA_CONTRACT: Input -> (sender_id: str, receiver_id: str, amount: Decimal), Output -> TransferResult
+# @RELATION: [CALLS] ->[atomic_transaction]
 # @PRE: amount > 0; sender != receiver; sender_balance >= amount.
 # @POST: sender_balance -= amount; receiver_balance += amount; Audit Record Created.
 # @SIDE_EFFECT: Database mutation (Rows locked), Audit IO.
-#
-# @UX_STATE: Success -> Returns 200 OK + Transaction Receipt.
-# @UX_STATE: Error(LowBalance) -> 422 Unprocessable -> UI shows "Top-up needed" modal.
+# @DATA_CONTRACT: Input -> (sender_id: str, receiver_id: str, amount: Decimal), Output -> TransferResult
 def execute_transfer(sender_id: str, receiver_id: str, amount: Decimal) -> TransferResult:
     # Guard: Input Validation (Вне belief_scope, так как это trivial проверка)
     if amount <= Decimal("0.00"):
@@ -54,7 +53,6 @@ def execute_transfer(sender_id: str, receiver_id: str, amount: Decimal) -> Trans
         logger.reason("Initiating transfer", extra={"from": sender_id, "to": receiver_id, "amount": amount})
 
         try:
-            # @RELATION: CALLS -> atomic_transaction
             with atomic_transaction():
                 current_balance = get_balance(sender_id, for_update=True)
                 

.ai/shots/frontend_component.svelte

@@ -1,18 +1,27 @@
 <!-- [DEF:FrontendComponentShot:Component] -->
 <!--
 /**
- * @TIER: CRITICAL
+ * @COMPLEXITY: 5
  * @SEMANTICS: Task, Button, Action, UX
  * @PURPOSE: Action button to spawn a new task with full UX feedback cycle.
  * @LAYER: UI (Presentation)
- * @RELATION: CALLS -> postApi
+ * @RELATION: [CALLS] ->[postApi]
  *
  * @INVARIANT: Must prevent double-submission while loading.
  * @INVARIANT: Loading state must always terminate (no infinite spinner).
  * @INVARIANT: User must receive feedback on both success and failure.
  *
+ * @SIDE_EFFECT: Sends network request and emits toast notifications.
+ * @DATA_CONTRACT: Input -> { plugin_id: string, params: object }, Output -> { task_id?: string }
+ *
  * @UX_REACTIVITY: Props -> $props(), LocalState -> $state(isLoading).
- * 
+ * @UX_STATE: Idle -> Button enabled, primary color, no spinner.
+ * @UX_STATE: Loading -> Button disabled, spinner visible, aria-busy=true.
+ * @UX_STATE: Success -> Toast success displayed.
+ * @UX_STATE: Error -> Toast error displayed.
+ * @UX_FEEDBACK: toast.success, toast.error
+ * @UX_RECOVERY: Error -> Keep form interactive and allow retry after failure.
+ *
  * @TEST_CONTRACT: ComponentState ->
  * {
  *   required_fields: { isLoading: bool },
@@ -21,26 +30,13 @@
  *     "isLoading=true implies aria-busy=true"
  *   ]
  * }
- *
  * @TEST_FIXTURE: idle_state -> { isLoading: false }
  * @TEST_FIXTURE: successful_response -> { task_id: "task_123" }
- * 
  * @TEST_EDGE: api_failure -> raises Error("Network")
  * @TEST_EDGE: empty_response -> {}
  * @TEST_EDGE: rapid_double_click -> special: concurrent_click
- * 
  * @TEST_INVARIANT: prevent_double_submission -> VERIFIED_BY:[rapid_double_click]
  * @TEST_INVARIANT: feedback_always_emitted -> VERIFIED_BY:[successful_response, api_failure]
- *
- * @UX_STATE: Idle -> Button enabled, primary color, no spinner.
- * @UX_STATE: Loading -> Button disabled, spinner visible, aria-busy=true.
- * @UX_STATE: Success -> Toast success displayed.
- * @UX_STATE: Error -> Toast error displayed.
- *
- * @UX_FEEDBACK: toast.success, toast.error
- *
- * @UX_TEST: Idle -> {click: spawnTask, expected: isLoading=true}
- * @UX_TEST: Loading -> {double_click: ignored, expected: single_api_call}
  */
 -->
 <script>

.ai/shots/plugin_example.py

@@ -1,10 +1,9 @@
 # [DEF:PluginExampleShot:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: Plugin, Core, Extension
 # @PURPOSE: Reference implementation of a plugin following GRACE standards.
 # @LAYER: Domain (Business Logic)
-# @RELATION: INHERITS -> PluginBase
-# @INVARIANT: get_schema must return valid JSON Schema.
+# @RELATION: [INHERITS] ->[PluginBase]
 
 from typing import Dict, Any, Optional
 from ..core.plugin_base import PluginBase
@@ -14,6 +13,7 @@ from ..core.logger import logger, belief_scope
 
 # [DEF:ExamplePlugin:Class]
 # @PURPOSE: A sample plugin to demonstrate execution context and logging.
+# @RELATION: [INHERITS] ->[PluginBase]
 class ExamplePlugin(PluginBase):
     @property
     def id(self) -> str:
@@ -21,7 +21,6 @@ class ExamplePlugin(PluginBase):
 
     #[DEF:get_schema:Function]
     # @PURPOSE: Defines input validation schema.
-    # @DATA_CONTRACT: Input -> None, Output -> Dict (JSON Schema draft 7)
     def get_schema(self) -> Dict[str, Any]:
         return {
             "type": "object",
@@ -36,8 +35,9 @@ class ExamplePlugin(PluginBase):
     #[/DEF:get_schema:Function]
 
     # [DEF:execute:Function]
+    # @COMPLEXITY: 4
     # @PURPOSE: Core plugin logic with structured logging and scope isolation.
-    # @DATA_CONTRACT: Input -> (params: Dict, context: Optional[TaskContext]), Output -> None
+    # @RELATION: [BINDS_TO] ->[context.logger]
     # @PRE: params must be validated against get_schema() before calling.
     # @POST: Plugin payload is processed; progress is reported if context exists.
     # @SIDE_EFFECT: Emits logs to centralized system and TaskContext.

.ai/shots/trivial_utility.py

@@ -0,0 +1,40 @@
+# [DEF:TrivialUtilityShot:Module]
+# @COMPLEXITY: 1
+# @PURPOSE: Reference implementation of a zero-overhead utility using implicit Complexity 1.
+
+import re
+from datetime import datetime, timezone
+from typing import Optional
+
+# [DEF:slugify:Function]
+# @PURPOSE: Converts a string to a URL-safe slug.
+def slugify(text: str) -> str:
+    if not text:
+        return ""
+    text = text.lower().strip()
+    text = re.sub(r'[^\w\s-]', '', text)
+    return re.sub(r'[-\s]+', '-', text)
+# [/DEF:slugify:Function]
+
+# [DEF:get_utc_now:Function]
+def get_utc_now() -> datetime:
+    """Returns current UTC datetime (purpose is omitted because it's obvious)."""
+    return datetime.now(timezone.utc)
+# [/DEF:get_utc_now:Function]
+
+# [DEF:PaginationDTO:Class]
+class PaginationDTO:
+    # [DEF:__init__:Function]
+    def __init__(self, page: int = 1, size: int = 50):
+        self.page = max(1, page)
+        self.size = min(max(1, size), 1000)
+    # [/DEF:__init__:Function]
+
+    # [DEF:offset:Function]
+    @property
+    def offset(self) -> int:
+        return (self.page - 1) * self.size
+    # [/DEF:offset:Function]
+# [/DEF:PaginationDTO:Class]
+
+# [/DEF:TrivialUtilityShot:Module]

.ai/standards/semantics.md

@@ -30,7 +30,7 @@
 
 ## III. ТОПОЛОГИЯ ФАЙЛА (СТРОГИЙ ПОРЯДОК)
 1. **HEADER (Заголовок):**[DEF:filename:Module]
-   @TIER: [CRITICAL | STANDARD | TRIVIAL]
+   @COMPLEXITY: [1|2|3|4|5] *(алиас: `@C:`; legacy `@TIER` допустим только для обратной совместимости)*
    @SEMANTICS: [keywords]
    @PURPOSE: [Однострочная суть]
    @LAYER: [Domain | UI | Infra]
@@ -40,7 +40,7 @@
 3. **FOOTER (Подвал):** [/DEF:filename:Module]
 
 ## IV. КОНТРАКТЫ (DESIGN BY CONTRACT & UX)
-Обязательны для TIER: CRITICAL и STANDARD. Заменяют стандартные Docstrings.
+Контракты требуются адаптивно по уровню сложности, а не по жесткому tier.
 
 **[CORE CONTRACTS]:**
 - `@PURPOSE:` Суть функции/компонента.
@@ -62,11 +62,40 @@
 - `@TEST_EDGE: [Название] ->[Сбой]` (Минимум 3: missing_field, invalid_type, external_fail).
 - `@TEST_INVARIANT: [Имя] -> VERIFIED_BY: [scenario_1, ...]`
 
-## V. УРОВНИ СТРОГОСТИ (TIERS)
-Степень контроля задается в Header.
-- **CRITICAL** (Ядро/Деньги/Безопасность): 100% покрытие тегами GRACE. Обязательны: Граф, Инварианты, Логи `logger.reason/reflect`, все `@UX` и `@TEST` теги. Использование `belief_scope` строго обязательно.
-- **STANDARD** (Бизнес-логика / Типовые формы): Базовый уровень. Обязательны: `@PURPOSE`, `@UX_STATE`, `@RELATION`, базовое логирование.
-- **TRIVIAL** (Утилиты / DTO / Атомы UI): Минимальный каркас. Только якоря `[DEF]...[/DEF]` и `@PURPOSE`.
+## V. ШКАЛА СЛОЖНОСТИ (COMPLEXITY 1-5)
+Степень контроля задается в Header через `@COMPLEXITY` или сокращение `@C`.
+Если тег отсутствует, сущность по умолчанию считается **Complexity 1**. Это сделано специально для экономии токенов и снижения шума на очевидных утилитах.
+
+- **1 — ATOMIC**
+  - Примеры: DTO, исключения, геттеры, простые утилиты, короткие адаптеры.
+  - Обязательны только якоря `[DEF]...[/DEF]`.
+  - `@PURPOSE` желателен, но не обязателен.
+
+- **2 — SIMPLE**
+  - Примеры: простые helper-функции, небольшие мапперы, UI-атомы.
+  - Обязателен `@PURPOSE`.
+  - Остальные контракты опциональны.
+
+- **3 — FLOW**
+  - Примеры: стандартная бизнес-логика, API handlers, сервисные методы, UI с загрузкой данных.
+  - Обязательны: `@PURPOSE`, `@RELATION`.
+  - Для UI дополнительно обязателен `@UX_STATE`.
+
+- **4 — ORCHESTRATION**
+  - Примеры: сложная координация, работа с I/O, multi-step алгоритмы, stateful pipelines.
+  - Обязательны: `@PURPOSE`, `@RELATION`, `@PRE`, `@POST`, `@SIDE_EFFECT`.
+  - Для Python обязателен осмысленный путь логирования через `logger.reason()` / `logger.reflect()` или аналогичный belief-state механизм.
+
+- **5 — CRITICAL**
+  - Примеры: auth, security, database boundaries, migration core, money-like invariants.
+  - Обязателен полный контракт: уровень 4 + `@DATA_CONTRACT` + `@INVARIANT`.
+  - Для UI требуются UX-контракты.
+  - Использование `belief_scope` строго обязательно.
+
+**Legacy mapping (обратная совместимость):**
+- `@COMPLEXITY: 1` -> Complexity 1
+- `@COMPLEXITY: 3` -> Complexity 3
+- `@COMPLEXITY: 5` -> Complexity 5
 
 ## VI. ПРОТОКОЛ ЛОГИРОВАНИЯ (THREAD-LOCAL BELIEF STATE)
 Логирование — это механизм трассировки рассуждений ИИ (CoT) и управления Attention Energy. Архитектура использует Thread-local storage (`_belief_state`), поэтому `ID` прокидывается автоматически.
@@ -90,11 +119,11 @@
 
 ## VII. АЛГОРИТМ ИСПОЛНЕНИЯ И САМОКОРРЕКЦИИ
 **[PHASE_1: ANALYSIS]**
-Оцени TIER, Layer и UX-требования. При слепоте контекста -> `yield [NEED_CONTEXT: id]`.
+Оцени Complexity, Layer и UX-требования. При слепоте контекста -> `yield [NEED_CONTEXT: id]`.
 **[PHASE_2: SYNTHESIS]**
-Сгенерируй каркас из `[DEF]`, Header и Контрактов.
+Сгенерируй каркас из `[DEF]`, Header и только тех контрактов, которые соответствуют уровню сложности.
 **[PHASE_3: IMPLEMENTATION]**
-Напиши код строго по Контракту. Для CRITICAL секций открой `with belief_scope("ID"):` и орошай путь вызовами `logger.reason()` и `logger.reflect()`.
+Напиши код строго по Контракту. Для Complexity 5 секций открой `with belief_scope("ID"):` и орошай путь вызовами `logger.reason()` и `logger.reflect()`.
 **[PHASE_4: CLOSURE]**
 Убедись, что все `[DEF]` закрыты соответствующими `[/DEF]`.
 

.env.enterprise-clean.example

@@ -1,7 +1,7 @@
 # Offline / air-gapped compose profile for enterprise clean release.
 
-BACKEND_IMAGE=ss-tools-backend:v1.0.0-rc2
-FRONTEND_IMAGE=ss-tools-frontend:v1.0.0-rc2
+BACKEND_IMAGE=ss-tools-backend:v1.0.0-rc2-docker
+FRONTEND_IMAGE=ss-tools-frontend:v1.0.0-rc2-docker
 POSTGRES_IMAGE=postgres:16-alpine
 
 POSTGRES_DB=ss_tools
@@ -17,5 +17,11 @@ TASK_LOG_LEVEL=INFO
 
 STORAGE_ROOT=./storage
 
+# Initial admin bootstrap. Set to true only for the first startup in a new environment.
+INITIAL_ADMIN_CREATE=false
+INITIAL_ADMIN_USERNAME=admin
+INITIAL_ADMIN_PASSWORD=change-me
+INITIAL_ADMIN_EMAIL=
+
 OPENAI_API_KEY=
 ANTHROPIC_API_KEY=

.gitattributes

@@ -0,0 +1,21 @@
+* text=auto eol=lf
+
+*.bat text eol=crlf
+*.cmd text eol=crlf
+*.ps1 text eol=crlf
+
+*.png binary
+*.jpg binary
+*.jpeg binary
+*.gif binary
+*.ico binary
+*.pdf binary
+*.zip binary
+*.gz binary
+*.tar binary
+*.db binary
+*.sqlite binary
+*.p12 binary
+*.pfx binary
+*.crt binary
+*.pem binary

.gitignore

@@ -65,13 +65,15 @@ backend/mappings.db
 
 
 backend/tasks.db
-backend/logs
-backend/auth.db
-semantics/reports
-backend/tasks.db
-
-# Universal / tooling
-node_modules/
+backend/logs
+backend/auth.db
+semantics/reports
+backend/tasks.db
+backend/**/*.db
+backend/**/*.sqlite
+
+# Universal / tooling
+node_modules/
 .venv/
 coverage/
 *.tmp

.kilocode/mcp.json

@@ -1 +1 @@
-{"mcpServers":{}}
+{"mcpServers":{"axiom-core":{"command":"/home/busya/dev/ast-mcp-core-server/.venv/bin/python","args":["-c","from src.server import main; main()"],"env":{"PYTHONPATH":"/home/busya/dev/ast-mcp-core-server"},"alwaysAllow":["read_grace_outline_tool","ast_search_tool","get_semantic_context_tool","build_task_context_tool","workspace_semantic_health_tool","audit_contracts_tool","diff_contract_semantics_tool","impact_analysis_tool","simulate_patch_tool","patch_contract_tool","rename_contract_id_tool","move_contract_tool","extract_contract_tool","infer_missing_relations_tool","map_runtime_trace_to_contracts_tool","trace_tests_for_contract_tool","scaffold_contract_tests_tool","search_contracts_tool"]}}}

.kilocode/workflows/speckit.semantics.md

@@ -12,62 +12,70 @@ You **MUST** consider the user input before proceeding (if not empty).
 
 ## Goal
 
-Ensure the codebase adheres to the semantic standards defined in `.ai/standards/semantics.md`. This involves generating the semantic map, analyzing compliance reports, and identifying critical parsing errors or missing metadata.
+Ensure the codebase adheres to the semantic standards defined in `.ai/standards/semantics.md` by using the AXIOM MCP semantic graph as the primary execution engine. This involves reindexing the workspace, measuring semantic health, auditing contract compliance, and optionally delegating contract-safe fixes through MCP-aware agents.
 
 ## Operating Constraints
 
 1. **ROLE: Orchestrator**: You are responsible for the high-level coordination of semantic maintenance.
-2. **STRICT ADHERENCE**: Follow `.ai/standards/semantics.md` for all anchor and tag syntax.
-3. **NON-DESTRUCTIVE**: Do not remove existing code logic; only add or update semantic annotations.
-4. **TIER AWARENESS**: Prioritize CRITICAL and STANDARD modules for compliance fixes.
-5. **NO PSEUDO-CONTRACTS (CRITICAL)**: You are STRICTLY FORBIDDEN from using automated scripts (e.g., Python/Bash/sed) to mechanically inject boilerplate, placeholders, or "pseudo-contracts" (such as `# @PURPOSE: Semantic contract placeholder.` or `# @PRE: Inputs satisfy function contract.`) merely to artificially inflate the compliance score. Every semantic tag, anchor, and contract you add MUST reflect a genuine, deep understanding of the specific code's actual logic and business requirements. Automated "stubbing" of semantics is classified as codebase corruption.
+2. **MCP-FIRST**: Use the connected AXIOM MCP server as the default mechanism for discovery, health checks, audit, semantic context, impact analysis, and contract mutation planning.
+3. **STRICT ADHERENCE**: Follow `.ai/standards/semantics.md` for all anchor and tag syntax.
+4. **NON-DESTRUCTIVE**: Do not remove existing code logic; only add or update semantic annotations.
+5. **TIER AWARENESS**: Prioritize CRITICAL and STANDARD modules for compliance fixes.
+6. **NO PSEUDO-CONTRACTS (CRITICAL)**: You are STRICTLY FORBIDDEN from using automated scripts (e.g., Python/Bash/sed) to mechanically inject boilerplate, placeholders, or "pseudo-contracts" merely to artificially inflate the compliance score. Every semantic tag, anchor, and contract you add MUST reflect a genuine, deep understanding of the code's actual logic and business requirements.
+7. **ID NAMING (CRITICAL)**: NEVER use fully-qualified Python import paths in `[DEF:id:Type]`. Use short, domain-driven semantic IDs (e.g., `[DEF:AuthService:Class]`). Follow the exact style shown in `.ai/standards/semantics.md`.
+8. **ORPHAN PREVENTION**: To reduce the orphan count, you MUST physically wrap actual class and function definitions with `[DEF:id:Type] ... [/DEF]` blocks in the code. Modifying `@RELATION` tags does NOT fix orphans. The AST parser flags any unwrapped function as an orphan.
 
 ## Execution Steps
 
-### 1. Generate Semantic Map
+### 1. Reindex Semantic Workspace
 
-Run the generator script from the repository root with the agent report option:
+Use MCP to refresh the semantic graph for the current workspace with [`reindex_workspace_tool`](.kilocode/mcp.json).
 
-```bash
-python3 generate_semantic_map.py --agent-report
-```
+### 2. Analyze Semantic Health
 
-### 2. Analyze Compliance Status
+Use [`workspace_semantic_health_tool`](.kilocode/mcp.json) and capture:
+- `contracts`
+- `relations`
+- `orphans`
+- `unresolved_relations`
+- `files`
 
-**Parse the JSON output to identify**:
-- `global_score`: The overall compliance percentage.
-- `critical_parsing_errors_count`: Number of Priority 1 blockers.
-- `priority_2_tier1_critical_missing_mandatory_tags_files`: Number of CRITICAL files needing metadata.
-- `targets`: Status of key architectural files.
+Treat high orphan counts and unresolved relations as first-class health indicators, not just informational noise.
 
 ### 3. Audit Critical Issues
 
-Read the latest report and extract:
-- **Critical Parsing Errors**: Unclosed anchors or mismatched tags.
-- **Low-Score Files**: Files with score < 0.7 or marked with 🔴.
-- **Missing Mandatory Tags**: Specifically for CRITICAL tier modules.
+Use [`audit_contracts_tool`](.kilocode/mcp.json) and classify findings into:
+- **Critical Parsing/Structure Errors**: malformed or incoherent semantic contract regions
+- **Critical Contract Gaps**: missing [`@DATA_CONTRACT`](.ai/standards/semantics.md), [`@PRE`](.ai/standards/semantics.md), [`@POST`](.ai/standards/semantics.md), [`@SIDE_EFFECT`](.ai/standards/semantics.md) on CRITICAL contracts
+- **Coverage Gaps**: missing [`@TIER`](.ai/standards/semantics.md), missing [`@PURPOSE`](.ai/standards/semantics.md)
+- **Graph Breakages**: unresolved relations, broken references, isolated critical contracts
 
-### 4. Formulate Remediation Plan
+### 4. Build Remediation Context
 
-Create a list of files requiring immediate attention:
-1. **Priority 1**: Fix all "Critical Parsing Errors" (unclosed anchors).
-2. **Priority 2**: Add missing mandatory tags for CRITICAL modules.
-3. **Priority 3**: Improve coverage for STANDARD modules.
+For the top failing contracts, use MCP semantic context tools such as [`get_semantic_context_tool`](.kilocode/mcp.json), [`build_task_context_tool`](.kilocode/mcp.json), [`impact_analysis_tool`](.kilocode/mcp.json), and [`trace_tests_for_contract_tool`](.kilocode/mcp.json) to understand:
+1. Local contract intent
+2. Upstream/downstream semantic impact
+3. Related tests and fixtures
+4. Whether relation recovery is needed
 
 ### 5. Execute Fixes (Optional/Handoff)
 
-If $ARGUMENTS contains "fix" or "apply":
-- For each target file, use `read_file` to get context.
-- Apply semantic fixes using `apply_diff`, preserving all code logic.
-- Re-run `python3 generate_semantic_map.py --agent-report` to verify the fix.
+If $ARGUMENTS contains `fix` or `apply`:
+- Handoff to the [`semantic`](.kilocodemodes) mode or a dedicated implementation agent instead of applying naive textual edits in orchestration.
+- Require the fixing agent to prefer MCP contract mutation tools such as [`simulate_patch_tool`](.kilocode/mcp.json), [`guarded_patch_contract_tool`](.kilocode/mcp.json), [`patch_contract_tool`](.kilocode/mcp.json), and [`infer_missing_relations_tool`](.kilocode/mcp.json).
+- After changes, re-run reindex, health, and audit MCP steps to verify the delta.
+
+### 6. Review Gate
+
+Before completion, request or perform an MCP-based review path aligned with the [`reviewer-agent-auditor`](.kilocodemodes) mode so the workflow produces a semantic PASS/FAIL gate, not just a remediation list.
 
 ## Output
 
 Provide a summary of the semantic state:
-- **Global Score**: [X]%
-- **Status**: [PASS/FAIL] (FAIL if any Critical Parsing Errors exist)
-- **Top Issues**: List top 3-5 files needing attention.
-- **Action Taken**: Summary of maps generated or fixes applied.
+- **Health Metrics**: contracts / relations / orphans / unresolved_relations / files
+- **Status**: [PASS/FAIL] (FAIL if CRITICAL gaps or semantically significant unresolved relations exist)
+- **Top Issues**: List top 3-5 contracts or files needing attention.
+- **Action Taken**: Summary of MCP analysis performed, context gathered, and fixes or handoffs initiated.
 
 ## Context
 

.kilocodemodes

@@ -6,7 +6,7 @@ customModes:
       You are Kilo Code, acting as a QA and Test Engineer. Your primary goal is to ensure maximum test coverage, maintain test quality, and preserve existing tests.
       Your responsibilities include:
       - WRITING TESTS: Create comprehensive unit tests following TDD principles, using co-location strategy (`__tests__` directories).
-      - TEST DATA: For CRITICAL tier modules, you MUST use @TEST_DATA fixtures defined in .ai/standards/semantics.md. Read and apply them in your tests.
+      - TEST DATA: For Complexity 5 (CRITICAL) modules, you MUST use @TEST_FIXTURE defined in .ai/standards/semantics.md. Read and apply them in your tests.
       - DOCUMENTATION: Maintain test documentation in `specs/<feature>/tests/` directory with coverage reports and test case specifications.
       - VERIFICATION: Run tests, analyze results, and ensure all tests pass.
       - PROTECTION: NEVER delete existing tests. NEVER duplicate tests - check for existing tests first.
@@ -20,12 +20,12 @@ customModes:
     customInstructions: |
       1. KNOWLEDGE GRAPH: ALWAYS read .ai/ROOT.md first to understand the project structure and navigation.
       2. CO-LOCATION: Write tests in `__tests__` subdirectories relative to the code being tested (Fractal Strategy).
-      2. TEST DATA MANDATORY: For CRITICAL modules, read @TEST_DATA from .ai/standards/semantics.md and use fixtures in tests.
-      3. UX CONTRACT TESTING: For Svelte components with @UX_STATE, @UX_FEEDBACK, @UX_RECOVERY tags, create comprehensive UX tests.
+      2. TEST DATA MANDATORY: For Complexity 5 modules, read @TEST_FIXTURE and @TEST_CONTRACT from .ai/standards/semantics.md.
+      3. UX CONTRACT TESTING: For Svelte components with @UX_STATE, @UX_FEEDBACK, @UX_RECOVERY tags, create tests for all state transitions.
       4. NO DELETION: Never delete existing tests - only update if they fail due to legitimate bugs.
       5. NO DUPLICATION: Check existing tests in `__tests__/` before creating new ones. Reuse existing test patterns.
       6. DOCUMENTATION: Create test reports in `specs/<feature>/tests/reports/YYYY-MM-DD-report.md`.
-      7. COVERAGE: Aim for maximum coverage but prioritize CRITICAL and STANDARD tier modules.
+      7. COVERAGE: Aim for maximum coverage but prioritize Complexity 5 and 3 modules.
       8. RUN TESTS: Execute tests using `cd backend && .venv/bin/python3 -m pytest` or `cd frontend && npm run test`.
   - slug: product-manager
     name: Product Manager
@@ -52,11 +52,13 @@ customModes:
       2. CONSTITUTION: Strictly follow architectural invariants in .ai/standards/constitution.md.
       3. SEMANTIC PROTOCOL: ALWAYS use .ai/standards/semantics.md as your source of truth for syntax.
       4. ANCHOR FORMAT: Use #[DEF:filename:Type] at start and #[/DEF:filename] at end.
-      3. TAGS: Add @PURPOSE, @LAYER, @TIER, @RELATION, @PRE, @POST, @UX_STATE, @UX_FEEDBACK, @UX_RECOVERY.
-      4. TIER COMPLIANCE:
-        - CRITICAL: Full contract + all UX tags + strict logging
-        - STANDARD: Basic contract + UX tags where applicable
-        - TRIVIAL: Only anchors + @PURPOSE
+      3. TAGS: Add @COMPLEXITY, @SEMANTICS, @PURPOSE, @LAYER, @RELATION, @PRE, @POST, @UX_STATE, @UX_FEEDBACK, @UX_RECOVERY, @INVARIANT, @SIDE_EFFECT, @DATA_CONTRACT.
+      4. COMPLEXITY COMPLIANCE (1-5):
+        - Complexity 1 (ATOMIC): Only anchors [DEF]...[/DEF]. @PURPOSE optional.
+        - Complexity 2 (SIMPLE): @PURPOSE required.
+        - Complexity 3 (FLOW): @PURPOSE, @RELATION required. For UI: @UX_STATE mandatory.
+        - Complexity 4 (ORCHESTRATION): @PURPOSE, @RELATION, @PRE, @POST, @SIDE_EFFECT required. logger.reason()/reflect() mandatory for Python.
+        - Complexity 5 (CRITICAL): Full contract (L4) + @DATA_CONTRACT + @INVARIANT. For UI: UX contracts mandatory. belief_scope mandatory.
       5. CODE SIZE: Keep modules under 300 lines. Refactor if exceeding.
       6. ERROR HANDLING: Use if/raise or guards, never assert.
       7. TEST FIXES: When fixing failing tests, preserve semantic annotations. Only update code logic.
@@ -102,7 +104,7 @@ customModes:
 
       ## III. ТОПОЛОГИЯ ФАЙЛА (СТРОГИЙ ПОРЯДОК)
       1. **HEADER (Заголовок):**[DEF:filename:Module]
-         @TIER: [CRITICAL | STANDARD | TRIVIAL]
+         @COMPLEXITY: [1|2|3|4|5] *(алиас: `@C:`)*
          @SEMANTICS: [keywords]
          @PURPOSE: [Однострочная суть]
          @LAYER: [Domain | UI | Infra]
@@ -112,7 +114,7 @@ customModes:
       3. **FOOTER (Подвал):** [/DEF:filename:Module]
 
       ## IV. КОНТРАКТЫ (DESIGN BY CONTRACT & UX)
-      Обязательны для TIER: CRITICAL и STANDARD. Заменяют стандартные Docstrings.
+      Контракты требуются адаптивно по уровню сложности, а не по жесткой шкале.
 
       **[CORE CONTRACTS]:**
       - `@PURPOSE:` Суть функции/компонента.
@@ -134,11 +136,40 @@ customModes:
       - `@TEST_EDGE: [Название] ->[Сбой]` (Минимум 3: missing_field, invalid_type, external_fail).
       - `@TEST_INVARIANT: [Имя] -> VERIFIED_BY: [scenario_1, ...]`
 
-      ## V. УРОВНИ СТРОГОСТИ (TIERS)
-      Степень контроля задается в Header.
-      - **CRITICAL** (Ядро/Деньги/Безопасность): 100% покрытие тегами GRACE. Обязательны: Граф, Инварианты, Логи `logger.reason/reflect`, все `@UX` и `@TEST` теги. Использование `belief_scope` строго обязательно.
-      - **STANDARD** (Бизнес-логика / Типовые формы): Базовый уровень. Обязательны: `@PURPOSE`, `@UX_STATE`, `@RELATION`, базовое логирование.
-      - **TRIVIAL** (Утилиты / DTO / Атомы UI): Минимальный каркас. Только якоря `[DEF]...[/DEF]` и `@PURPOSE`.
+      ## V. ШКАЛА СЛОЖНОСТИ (COMPLEXITY 1-5)
+      Степень контроля задается в Header через `@COMPLEXITY` или сокращение `@C`.
+      Если тег отсутствует, сущность по умолчанию считается **Complexity 1**. Это сделано специально для экономии токенов и снижения шума на очевидных утилитах.
+
+      - **1 - ATOMIC**
+        - Примеры: DTO, исключения, геттеры, простые утилиты, короткие адаптеры.
+        - Обязательны только якоря `[DEF]...[/DEF]`.
+        - `@PURPOSE` желателен, но не обязателен.
+
+      - **2 - SIMPLE**
+        - Примеры: простые helper-функции, небольшие мапперы, UI-атомы.
+        - Обязателен `@PURPOSE`.
+        - Остальные контракты опциональны.
+
+      - **3 - FLOW**
+        - Примеры: стандартная бизнес-логика, API handlers, сервисные методы, UI с загрузкой данных.
+        - Обязательны: `@PURPOSE`, `@RELATION`.
+        - Для UI дополнительно обязателен `@UX_STATE`.
+
+      - **4 - ORCHESTRATION**
+        - Примеры: сложная координация, работа с I/O, multi-step алгоритмы, stateful pipelines.
+        - Обязательны: `@PURPOSE`, `@RELATION`, `@PRE`, `@POST`, `@SIDE_EFFECT`.
+        - Для Python обязателен осмысленный путь логирования через `logger.reason()` / `logger.reflect()` или аналогичный belief-state механизм.
+
+      - **5 - CRITICAL**
+        - Примеры: auth, security, database boundaries, migration core, money-like invariants.
+        - Обязателен полный контракт: уровень 4 + `@DATA_CONTRACT` + `@INVARIANT`.
+        - Для UI требуются UX-контракты.
+        - Использование `belief_scope` строго обязательно.
+
+      **Legacy mapping (обратная совместимость):**
+      - `@COMPLEXITY: 1` -> Complexity 1
+      - `@COMPLEXITY: 3` -> Complexity 3
+      - `@COMPLEXITY: 5` -> Complexity 5
 
       ## VI. ПРОТОКОЛ ЛОГИРОВАНИЯ (THREAD-LOCAL BELIEF STATE)
       Логирование - это механизм трассировки рассуждений ИИ (CoT) и управления Attention Energy. Архитектура использует Thread-local storage (`_belief_state`), поэтому `ID` прокидывается автоматически.
@@ -162,11 +193,11 @@ customModes:
 
       ## VII. АЛГОРИТМ ИСПОЛНЕНИЯ И САМОКОРРЕКЦИИ
       **[PHASE_1: ANALYSIS]**
-      Оцени TIER, Layer и UX-требования. При слепоте контекста -> `yield [NEED_CONTEXT: id]`.
+      Оцени Complexity, Layer и UX-требования. При слепоте контекста -> `yield [NEED_CONTEXT: id]`.
       **[PHASE_2: SYNTHESIS]**
-      Сгенерируй каркас из `[DEF]`, Header и Контрактов.
+      Сгенерируй каркас из `[DEF]`, Header и только тех контрактов, которые соответствуют уровню сложности.
       **[PHASE_3: IMPLEMENTATION]**
-      Напиши код строго по Контракту. Для CRITICAL секций открой `with belief_scope("ID"):` и орошай путь вызовами `logger.reason()` и `logger.reflect()`.
+      Напиши код строго по Контракту. Для Complexity 5 секций открой `with belief_scope("ID"):` и орошай путь вызовами `logger.reason()` и `logger.reflect()`.
       **[PHASE_4: CLOSURE]**
       Убедись, что все `[DEF]` закрыты соответствующими `[/DEF]`.
 
@@ -187,8 +218,32 @@ customModes:
     source: project
   - slug: reviewer-agent-auditor
     name: Reviewer Agent (Auditor)
+    roleDefinition: |-
+      # SYSTEM DIRECTIVE: GRACE-Poly (UX Edition) v2.2
+      > OPERATION MODE: AUDITOR (Strict Semantic Enforcement, Zero Fluff).
+      > ROLE: GRACE Reviewer & Quality Control Engineer.
+
+      Твоя единственная цель — искать нарушения протокола GRACE-Poly . Ты не пишешь код (кроме исправлений разметки). Ты — безжалостный инспектор ОТК.
+
+      ## ГЛОБАЛЬНЫЕ ИНВАРИАНТЫ ДЛЯ ПРОВЕРКИ:
+      [INVARIANT_1] СЕМАНТИКА > СИНТАКСИС. Код без контракта = МУСОР.
+      [INVARIANT_2] ЗАПРЕТ ГАЛЛЮЦИНАЦИЙ. Проверяй наличие узлов @RELATION.
+      [INVARIANT_4] ФРАКТАЛЬНЫЙ ЛИМИТ. Файлы > 300 строк — критическое нарушение.
+      [INVARIANT_5] НЕПРИКОСНОВЕННОСТЬ ЯКОРЕЙ. Проверяй пары [DEF] ... [/DEF].
+
+      ## ТВОЙ ЧЕК-ЛИСТ:
+      1. Валидность якорей (парность, соответствие Type).
+      2. Соответствие @COMPLEXITY (C1-C5) набору обязательных тегов.
+      3. Наличие @TEST_CONTRACT для критических узлов.
+      4. Качество логирования logger.reason/reflect для C4+.
     description: Безжалостный инспектор ОТК.
-    roleDefinition: '*"Ты GRACE Reviewer. Твоя единственная цель — искать нарушения протокола GRACE-Poly. Ты не пишешь код. Ты читаешь код и проверяешь Чек-лист. Если блок `[DEF]` открыт, но нет закрывающего `[/DEF]` — это FATAL ERROR. Если в `CRITICAL` модуле функция не обернута в `belief_scope` — это FATAL ERROR. Выводи только PASS или FAIL со списком строк, где найдена ошибка."*'
+    customInstructions: |-
+      1. ANALYSIS: Оценивай файлы по шкале сложности в .ai/standards/semantics.md.
+      2. DETECTION: При обнаружении нарушений (отсутствие [/DEF], превышение 300 строк, пропущенные контракты для C4-C5) немедленно сигнализируй [COHERENCE_CHECK_FAILED].
+      3. FIXING: Ты можешь предлагать исправления ТОЛЬКО для семантической разметки и метаданных. Не меняй логику алгоритмов без санкции Архитектора.
+      4. TEST AUDIT: Проверяй @TEST_CONTRACT, @TEST_SCENARIO и @TEST_EDGE. Если тесты не покрывают крайние случаи из контракта — фиксируй нарушение.
+      5. LOGGING AUDIT: Для Complexity 4-5 проверяй наличие logger.reason() и logger.reflect().
+      6. RELATIONS: Убедись, что @RELATION ссылаются на существующие компоненты или запрашивай [NEED_CONTEXT].
     groups:
       - read
       - edit

README.md

@@ -151,8 +151,10 @@ cd backend
 source .venv/bin/activate
 python src/scripts/init_auth_db.py
 
+# При первом запуске будет создан backend/.env с ENCRYPTION_KEY
+
 # Создание администратора
-python src/scripts/create_admin.py --username admin --password admin
+python src/scripts/create_admin.py --username admin --password '<strong-temporary-secret>'
 ```
 
 ## 🏢 Enterprise Clean Deployment (internal-only)
@@ -250,21 +252,32 @@ cd /home/busya/dev/ss-tools
 
 ```bash
 # 1. Собрать образы в подключённом контуре
-./scripts/build_offline_docker_bundle.sh v1.0.0-rc2
+./scripts/build_offline_docker_bundle.sh v1.0.0-rc2-docker
 
 # 2. Передать dist/docker/* в изолированный контур
 # 3. Импортировать образы локально
-docker load -i dist/docker/backend.v1.0.0-rc2.tar
-docker load -i dist/docker/frontend.v1.0.0-rc2.tar
-docker load -i dist/docker/postgres.v1.0.0-rc2.tar
+docker load -i dist/docker/backend.v1.0.0-rc2-docker.tar
+docker load -i dist/docker/frontend.v1.0.0-rc2-docker.tar
+docker load -i dist/docker/postgres.v1.0.0-rc2-docker.tar
 
 # 4. Подготовить env из шаблона
 cp dist/docker/.env.enterprise-clean.example .env.enterprise-clean
 
+# 4a. Для первого запуска задать bootstrap администратора
+# INITIAL_ADMIN_CREATE=true
+# INITIAL_ADMIN_USERNAME=<org-admin-login>
+# INITIAL_ADMIN_PASSWORD=<temporary-strong-secret>
+
 # 5. Запустить только локальные образы
 docker compose --env-file .env.enterprise-clean -f dist/docker/docker-compose.enterprise-clean.yml up -d
 ```
 
+Bootstrap администратора выполняется entrypoint-скриптом внутри backend container:
+- если `INITIAL_ADMIN_CREATE=true`, контейнер вызывает [`create_admin.py`](backend/src/scripts/create_admin.py) перед стартом API;
+- если администратор уже существует, учётная запись не меняется;
+- теги в [`.env.enterprise-clean.example`](.env.enterprise-clean.example) должны совпадать с фактически загруженными образами `ss-tools-backend:v1.0.0-rc2-docker` и `ss-tools-frontend:v1.0.0-rc2-docker`;
+- после первого входа пароль должен быть ротирован, а `INITIAL_ADMIN_CREATE` возвращён в `false`.
+
 Ограничения для production-grade offline release:
 - build не должен тянуть зависимости в изолированном контуре;
 - все base images должны быть заранее зеркалированы во внутренний registry или поставляться как tar;

artifacts.json

@@ -1,14 +1,31 @@
-[
-  {
-    "path": "src/main.py",
-    "category": "core"
-  },
-  {
-    "path": "src/api/routes/clean_release.py",
-    "category": "core"
-  },
-  {
-    "path": "docs/installation.md",
-    "category": "docs"
-  }
-]
+{
+  "artifacts": [
+    {
+      "id": "artifact-backend-dist",
+      "path": "backend/dist/package.tar.gz",
+      "sha256": "deadbeef",
+      "size": 1024,
+      "category": "core",
+      "source_uri": "https://repo.intra.company.local/releases/backend/dist/package.tar.gz",
+      "source_host": "repo.intra.company.local"
+    },
+    {
+      "id": "artifact-clean-release-route",
+      "path": "backend/src/api/routes/clean_release.py",
+      "sha256": "feedface",
+      "size": 8192,
+      "category": "core",
+      "source_uri": "https://repo.intra.company.local/releases/backend/src/api/routes/clean_release.py",
+      "source_host": "repo.intra.company.local"
+    },
+    {
+      "id": "artifact-installation-docs",
+      "path": "docs/installation.md",
+      "sha256": "c0ffee00",
+      "size": 4096,
+      "category": "docs",
+      "source_uri": "https://repo.intra.company.local/releases/docs/installation.md",
+      "source_host": "repo.intra.company.local"
+    }
+  ]
+}

backend/src/api/auth.py

@@ -1,118 +1,125 @@
-# [DEF:backend.src.api.auth:Module]
-#
-# @SEMANTICS: api, auth, routes, login, logout
-# @PURPOSE:   Authentication API endpoints.
-# @LAYER:     API
-# @RELATION:  USES -> backend.src.services.auth_service.AuthService
-# @RELATION:  USES -> backend.src.core.database.get_auth_db
-#
-# @INVARIANT: All auth endpoints must return consistent error codes.
-
-# [SECTION: IMPORTS]
-from fastapi import APIRouter, Depends, HTTPException, status
-from fastapi.security import OAuth2PasswordRequestForm
-from sqlalchemy.orm import Session
-from ..core.database import get_auth_db
-from ..services.auth_service import AuthService
-from ..schemas.auth import Token, User as UserSchema
-from ..dependencies import get_current_user
-from ..core.auth.oauth import oauth, is_adfs_configured
-from ..core.auth.logger import log_security_event
-from ..core.logger import belief_scope
-import starlette.requests
-# [/SECTION]
-
-# [DEF:router:Variable]
-# @PURPOSE: APIRouter instance for authentication routes.
-router = APIRouter(prefix="/api/auth", tags=["auth"])
-# [/DEF:router:Variable]
-
-# [DEF:login_for_access_token:Function]
-# @PURPOSE: Authenticates a user and returns a JWT access token.
-# @PRE:     form_data contains username and password.
-# @POST:    Returns a Token object on success.
-# @THROW:   HTTPException 401 if authentication fails.
-# @PARAM:   form_data (OAuth2PasswordRequestForm) - Login credentials.
-# @PARAM:   db (Session) - Auth database session.
-# @RETURN:  Token - The generated JWT token.
-@router.post("/login", response_model=Token)
-async def login_for_access_token(
-    form_data: OAuth2PasswordRequestForm = Depends(),
-    db: Session = Depends(get_auth_db)
-):
-    with belief_scope("api.auth.login"):
-        auth_service = AuthService(db)
-        user = auth_service.authenticate_user(form_data.username, form_data.password)
-        if not user:
-            log_security_event("LOGIN_FAILED", form_data.username, {"reason": "Invalid credentials"})
-            raise HTTPException(
-                status_code=status.HTTP_401_UNAUTHORIZED,
-                detail="Incorrect username or password",
-                headers={"WWW-Authenticate": "Bearer"},
-            )
-        log_security_event("LOGIN_SUCCESS", user.username, {"source": "LOCAL"})
-        return auth_service.create_session(user)
-# [/DEF:login_for_access_token:Function]
-
-# [DEF:read_users_me:Function]
-# @PURPOSE: Retrieves the profile of the currently authenticated user.
-# @PRE:     Valid JWT token provided.
-# @POST:    Returns the current user's data.
-# @PARAM:   current_user (UserSchema) - The user extracted from the token.
-# @RETURN:  UserSchema - The current user profile.
-@router.get("/me", response_model=UserSchema)
-async def read_users_me(current_user: UserSchema = Depends(get_current_user)):
-    with belief_scope("api.auth.me"):
-        return current_user
-# [/DEF:read_users_me:Function]
-
-# [DEF:logout:Function]
-# @PURPOSE: Logs out the current user (placeholder for session revocation).
-# @PRE:     Valid JWT token provided.
-# @POST:    Returns success message.
-@router.post("/logout")
-async def logout(current_user: UserSchema = Depends(get_current_user)):
-    with belief_scope("api.auth.logout"):
-        log_security_event("LOGOUT", current_user.username)
-        # In a stateless JWT setup, client-side token deletion is primary.
-        # Server-side revocation (blacklisting) can be added here if needed.
-        return {"message": "Successfully logged out"}
-# [/DEF:logout:Function]
-
-# [DEF:login_adfs:Function]
-# @PURPOSE: Initiates the ADFS OIDC login flow.
-# @POST:    Redirects the user to ADFS.
-@router.get("/login/adfs")
-async def login_adfs(request: starlette.requests.Request):
-    with belief_scope("api.auth.login_adfs"):
-        if not is_adfs_configured():
-            raise HTTPException(
-                status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
-                detail="ADFS is not configured. Please set ADFS_CLIENT_ID, ADFS_CLIENT_SECRET, and ADFS_METADATA_URL environment variables."
-            )
-        redirect_uri = request.url_for('auth_callback_adfs')
-        return await oauth.adfs.authorize_redirect(request, str(redirect_uri))
-# [/DEF:login_adfs:Function]
-
-# [DEF:auth_callback_adfs:Function]
-# @PURPOSE: Handles the callback from ADFS after successful authentication.
-# @POST:    Provisions user JIT and returns session token.
-@router.get("/callback/adfs", name="auth_callback_adfs")
-async def auth_callback_adfs(request: starlette.requests.Request, db: Session = Depends(get_auth_db)):
-    with belief_scope("api.auth.callback_adfs"):
-        if not is_adfs_configured():
-            raise HTTPException(
-                status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
-                detail="ADFS is not configured. Please set ADFS_CLIENT_ID, ADFS_CLIENT_SECRET, and ADFS_METADATA_URL environment variables."
-            )
-        token = await oauth.adfs.authorize_access_token(request)
-        user_info = token.get('userinfo')
-        if not user_info:
-            raise HTTPException(status_code=400, detail="Failed to retrieve user info from ADFS")
-        
-        auth_service = AuthService(db)
-        user = auth_service.provision_adfs_user(user_info)
-        return auth_service.create_session(user)
-# [/DEF:auth_callback_adfs:Function]
-
+# [DEF:backend.src.api.auth:Module]
+#
+# @COMPLEXITY: 3
+# @SEMANTICS: api, auth, routes, login, logout
+# @PURPOSE:   Authentication API endpoints.
+# @LAYER:     API
+# @RELATION:  USES ->[backend.src.services.auth_service.AuthService]
+# @RELATION:  USES ->[backend.src.core.database.get_auth_db]
+#
+# @INVARIANT: All auth endpoints must return consistent error codes.
+
+# [SECTION: IMPORTS]
+from fastapi import APIRouter, Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordRequestForm
+from sqlalchemy.orm import Session
+from ..core.database import get_auth_db
+from ..services.auth_service import AuthService
+from ..schemas.auth import Token, User as UserSchema
+from ..dependencies import get_current_user
+from ..core.auth.oauth import oauth, is_adfs_configured
+from ..core.auth.logger import log_security_event
+from ..core.logger import belief_scope
+import starlette.requests
+# [/SECTION]
+
+# [DEF:router:Variable]
+# @COMPLEXITY: 1
+# @PURPOSE: APIRouter instance for authentication routes.
+router = APIRouter(prefix="/api/auth", tags=["auth"])
+# [/DEF:router:Variable]
+
+# [DEF:login_for_access_token:Function]
+# @COMPLEXITY: 3
+# @PURPOSE: Authenticates a user and returns a JWT access token.
+# @PRE:     form_data contains username and password.
+# @POST:    Returns a Token object on success.
+# @THROW:   HTTPException 401 if authentication fails.
+# @PARAM:   form_data (OAuth2PasswordRequestForm) - Login credentials.
+# @PARAM:   db (Session) - Auth database session.
+# @RETURN:  Token - The generated JWT token.
+@router.post("/login", response_model=Token)
+async def login_for_access_token(
+    form_data: OAuth2PasswordRequestForm = Depends(),
+    db: Session = Depends(get_auth_db)
+):
+    with belief_scope("api.auth.login"):
+        auth_service = AuthService(db)
+        user = auth_service.authenticate_user(form_data.username, form_data.password)
+        if not user:
+            log_security_event("LOGIN_FAILED", form_data.username, {"reason": "Invalid credentials"})
+            raise HTTPException(
+                status_code=status.HTTP_401_UNAUTHORIZED,
+                detail="Incorrect username or password",
+                headers={"WWW-Authenticate": "Bearer"},
+            )
+        log_security_event("LOGIN_SUCCESS", user.username, {"source": "LOCAL"})
+        return auth_service.create_session(user)
+# [/DEF:login_for_access_token:Function]
+
+# [DEF:read_users_me:Function]
+# @COMPLEXITY: 3
+# @PURPOSE: Retrieves the profile of the currently authenticated user.
+# @PRE:     Valid JWT token provided.
+# @POST:    Returns the current user's data.
+# @PARAM:   current_user (UserSchema) - The user extracted from the token.
+# @RETURN:  UserSchema - The current user profile.
+@router.get("/me", response_model=UserSchema)
+async def read_users_me(current_user: UserSchema = Depends(get_current_user)):
+    with belief_scope("api.auth.me"):
+        return current_user
+# [/DEF:read_users_me:Function]
+
+# [DEF:logout:Function]
+# @COMPLEXITY: 3
+# @PURPOSE: Logs out the current user (placeholder for session revocation).
+# @PRE:     Valid JWT token provided.
+# @POST:    Returns success message.
+@router.post("/logout")
+async def logout(current_user: UserSchema = Depends(get_current_user)):
+    with belief_scope("api.auth.logout"):
+        log_security_event("LOGOUT", current_user.username)
+        # In a stateless JWT setup, client-side token deletion is primary.
+        # Server-side revocation (blacklisting) can be added here if needed.
+        return {"message": "Successfully logged out"}
+# [/DEF:logout:Function]
+
+# [DEF:login_adfs:Function]
+# @COMPLEXITY: 3
+# @PURPOSE: Initiates the ADFS OIDC login flow.
+# @POST:    Redirects the user to ADFS.
+@router.get("/login/adfs")
+async def login_adfs(request: starlette.requests.Request):
+    with belief_scope("api.auth.login_adfs"):
+        if not is_adfs_configured():
+            raise HTTPException(
+                status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
+                detail="ADFS is not configured. Please set ADFS_CLIENT_ID, ADFS_CLIENT_SECRET, and ADFS_METADATA_URL environment variables."
+            )
+        redirect_uri = request.url_for('auth_callback_adfs')
+        return await oauth.adfs.authorize_redirect(request, str(redirect_uri))
+# [/DEF:login_adfs:Function]
+
+# [DEF:auth_callback_adfs:Function]
+# @COMPLEXITY: 3
+# @PURPOSE: Handles the callback from ADFS after successful authentication.
+# @POST:    Provisions user JIT and returns session token.
+@router.get("/callback/adfs", name="auth_callback_adfs")
+async def auth_callback_adfs(request: starlette.requests.Request, db: Session = Depends(get_auth_db)):
+    with belief_scope("api.auth.callback_adfs"):
+        if not is_adfs_configured():
+            raise HTTPException(
+                status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
+                detail="ADFS is not configured. Please set ADFS_CLIENT_ID, ADFS_CLIENT_SECRET, and ADFS_METADATA_URL environment variables."
+            )
+        token = await oauth.adfs.authorize_access_token(request)
+        user_info = token.get('userinfo')
+        if not user_info:
+            raise HTTPException(status_code=400, detail="Failed to retrieve user info from ADFS")
+        
+        auth_service = AuthService(db)
+        user = auth_service.provision_adfs_user(user_info)
+        return auth_service.create_session(user)
+# [/DEF:auth_callback_adfs:Function]
+
 # [/DEF:backend.src.api.auth:Module]

backend/src/api/routes/__init__.py

@@ -1,5 +1,5 @@
 # [DEF:backend.src.api.routes.__init__:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: routes, lazy-import, module-registry
 # @PURPOSE: Provide lazy route module loading to avoid heavyweight imports during tests.
 # @LAYER: API
@@ -10,7 +10,7 @@ __all__ = ['plugins', 'tasks', 'settings', 'connections', 'environments', 'mappi
 
 
 # [DEF:__getattr__:Function]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Lazily import route module by attribute name.
 # @PRE: name is module candidate exposed in __all__.
 # @POST: Returns imported submodule or raises AttributeError.

backend/src/api/routes/__tests__/test_assistant_api.py

@@ -1,5 +1,5 @@
 # [DEF:backend.src.api.routes.__tests__.test_assistant_api:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: tests, assistant, api, confirmation, status
 # @PURPOSE: Validate assistant API endpoint logic via direct async handler invocation.
 # @LAYER: UI (API Tests)
@@ -26,7 +26,7 @@ from src.models.assistant import (
 
 
 # [DEF:_run_async:Function]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Execute async endpoint handler in synchronous test context.
 # @PRE: coroutine is awaitable endpoint invocation.
 # @POST: Returns coroutine result or raises propagated exception.
@@ -36,7 +36,7 @@ def _run_async(coroutine):
 
 # [/DEF:_run_async:Function]
 # [DEF:_FakeTask:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Lightweight task stub used by assistant API tests.
 class _FakeTask:
     def __init__(self, task_id: str, status: str = "RUNNING", user_id: str = "u-admin"):
@@ -47,7 +47,7 @@ class _FakeTask:
 
 # [/DEF:_FakeTask:Class]
 # [DEF:_FakeTaskManager:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Minimal async-compatible TaskManager fixture for deterministic test flows.
 class _FakeTaskManager:
     def __init__(self):
@@ -71,7 +71,7 @@ class _FakeTaskManager:
 
 # [/DEF:_FakeTaskManager:Class]
 # [DEF:_FakeConfigManager:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Environment config fixture with dev/prod aliases for parser tests.
 class _FakeConfigManager:
     def get_environments(self):
@@ -87,7 +87,7 @@ class _FakeConfigManager:
         )
 # [/DEF:_FakeConfigManager:Class]
 # [DEF:_admin_user:Function]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Build admin principal fixture.
 # @PRE: Test harness requires authenticated admin-like principal object.
 # @POST: Returns user stub with Admin role.
@@ -98,7 +98,7 @@ def _admin_user():
 
 # [/DEF:_admin_user:Function]
 # [DEF:_limited_user:Function]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Build non-admin principal fixture.
 # @PRE: Test harness requires restricted principal for deny scenarios.
 # @POST: Returns user stub without admin privileges.
@@ -109,7 +109,7 @@ def _limited_user():
 
 # [/DEF:_limited_user:Function]
 # [DEF:_FakeQuery:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Minimal chainable query object for fake SQLAlchemy-like DB behavior in tests.
 class _FakeQuery:
     def __init__(self, rows):
@@ -141,7 +141,7 @@ class _FakeQuery:
 
 # [/DEF:_FakeQuery:Class]
 # [DEF:_FakeDb:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: In-memory fake database implementing subset of Session interface used by assistant routes.
 class _FakeDb:
     def __init__(self):
@@ -191,7 +191,7 @@ class _FakeDb:
 
 # [/DEF:_FakeDb:Class]
 # [DEF:_clear_assistant_state:Function]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Reset in-memory assistant registries for isolation between tests.
 # @PRE: Assistant module globals may contain residues from previous test runs.
 # @POST: In-memory conversation/confirmation/audit dictionaries are empty.

backend/src/api/routes/__tests__/test_assistant_authz.py

@@ -1,5 +1,5 @@
 # [DEF:backend.src.api.routes.__tests__.test_assistant_authz:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: tests, assistant, authz, confirmation, rbac
 # @PURPOSE: Verify assistant confirmation ownership, expiration, and deny behavior for restricted users.
 # @LAYER: UI (API Tests)
@@ -28,7 +28,7 @@ from src.models.assistant import (
 
 
 # [DEF:_run_async:Function]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Execute async endpoint handler in synchronous test context.
 # @PRE: coroutine is awaitable endpoint invocation.
 # @POST: Returns coroutine result or raises propagated exception.
@@ -38,7 +38,7 @@ def _run_async(coroutine):
 
 # [/DEF:_run_async:Function]
 # [DEF:_FakeTask:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Lightweight task model used for assistant authz tests.
 class _FakeTask:
     def __init__(self, task_id: str, status: str = "RUNNING", user_id: str = "u-admin"):
@@ -49,7 +49,7 @@ class _FakeTask:
 
 # [/DEF:_FakeTask:Class]
 # [DEF:_FakeTaskManager:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Minimal task manager for deterministic operation creation and lookup.
 class _FakeTaskManager:
     def __init__(self):
@@ -73,7 +73,7 @@ class _FakeTaskManager:
 
 # [/DEF:_FakeTaskManager:Class]
 # [DEF:_FakeConfigManager:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Provide deterministic environment aliases required by intent parsing.
 class _FakeConfigManager:
     def get_environments(self):
@@ -85,7 +85,7 @@ class _FakeConfigManager:
 
 # [/DEF:_FakeConfigManager:Class]
 # [DEF:_admin_user:Function]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Build admin principal fixture.
 # @PRE: Test requires privileged principal for risky operations.
 # @POST: Returns admin-like user stub with Admin role.
@@ -96,7 +96,7 @@ def _admin_user():
 
 # [/DEF:_admin_user:Function]
 # [DEF:_other_admin_user:Function]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Build second admin principal fixture for ownership tests.
 # @PRE: Ownership mismatch scenario needs distinct authenticated actor.
 # @POST: Returns alternate admin-like user stub.
@@ -107,7 +107,7 @@ def _other_admin_user():
 
 # [/DEF:_other_admin_user:Function]
 # [DEF:_limited_user:Function]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Build limited principal without required assistant execution privileges.
 # @PRE: Permission denial scenario needs non-admin actor.
 # @POST: Returns restricted user stub.
@@ -118,7 +118,7 @@ def _limited_user():
 
 # [/DEF:_limited_user:Function]
 # [DEF:_FakeQuery:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Minimal chainable query object for fake DB interactions.
 class _FakeQuery:
     def __init__(self, rows):
@@ -150,7 +150,7 @@ class _FakeQuery:
 
 # [/DEF:_FakeQuery:Class]
 # [DEF:_FakeDb:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: In-memory session substitute for assistant route persistence calls.
 class _FakeDb:
     def __init__(self):
@@ -197,7 +197,7 @@ class _FakeDb:
 
 # [/DEF:_FakeDb:Class]
 # [DEF:_clear_assistant_state:Function]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Reset assistant process-local state between test cases.
 # @PRE: Assistant globals may contain state from prior tests.
 # @POST: Assistant in-memory state dictionaries are cleared.

backend/src/api/routes/__tests__/test_clean_release_api.py

@@ -1,5 +1,5 @@
 # [DEF:backend.tests.api.routes.test_clean_release_api:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: tests, api, clean-release, checks, reports
 # @PURPOSE: Contract tests for clean release checks and reports endpoints.
 # @LAYER: Domain

backend/src/api/routes/__tests__/test_clean_release_legacy_compat.py

@@ -1,5 +1,5 @@
 # [DEF:backend.src.api.routes.__tests__.test_clean_release_legacy_compat:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @PURPOSE: Compatibility tests for legacy clean-release API paths retained during v2 migration.
 # @LAYER: Tests
 # @RELATION: TESTS -> backend.src.api.routes.clean_release

backend/src/api/routes/__tests__/test_clean_release_source_policy.py

@@ -1,5 +1,5 @@
 # [DEF:backend.tests.api.routes.test_clean_release_source_policy:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: tests, api, clean-release, source-policy
 # @PURPOSE: Validate API behavior for source isolation violations in clean release preparation.
 # @LAYER: Domain

backend/src/api/routes/__tests__/test_clean_release_v2_api.py

@@ -1,5 +1,5 @@
 # [DEF:test_clean_release_v2_api:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @PURPOSE: API contract tests for redesigned clean release endpoints.
 # @LAYER: Domain
 

backend/src/api/routes/__tests__/test_clean_release_v2_release_api.py

@@ -1,5 +1,5 @@
 # [DEF:test_clean_release_v2_release_api:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @PURPOSE: API contract test scaffolding for clean release approval and publication endpoints.
 # @LAYER: Domain
 # @RELATION: IMPLEMENTS -> clean_release_v2_release_api_contracts

backend/src/api/routes/__tests__/test_connections_routes.py

@@ -0,0 +1,72 @@
+# [DEF:backend.src.api.routes.__tests__.test_connections_routes:Module]
+# @COMPLEXITY: 3
+# @PURPOSE: Verifies connection routes bootstrap their table before CRUD access.
+# @LAYER: API
+# @RELATION: VERIFIES -> backend.src.api.routes.connections
+
+import os
+import sys
+import asyncio
+from pathlib import Path
+
+import pytest
+from sqlalchemy import create_engine, inspect
+from sqlalchemy.orm import sessionmaker
+from sqlalchemy.pool import StaticPool
+
+# Force SQLite in-memory for database module imports.
+os.environ["DATABASE_URL"] = "sqlite:///:memory:"
+os.environ["TASKS_DATABASE_URL"] = "sqlite:///:memory:"
+os.environ["AUTH_DATABASE_URL"] = "sqlite:///:memory:"
+os.environ["ENVIRONMENT"] = "testing"
+
+backend_dir = str(Path(__file__).parent.parent.parent.parent.resolve())
+if backend_dir not in sys.path:
+    sys.path.insert(0, backend_dir)
+
+
+@pytest.fixture
+def db_session():
+    engine = create_engine(
+        "sqlite:///:memory:",
+        connect_args={"check_same_thread": False},
+        poolclass=StaticPool,
+    )
+    session = sessionmaker(bind=engine)()
+    try:
+        yield session
+    finally:
+        session.close()
+
+
+def test_list_connections_bootstraps_missing_table(db_session):
+    from src.api.routes.connections import list_connections
+
+    result = asyncio.run(list_connections(db=db_session))
+
+    inspector = inspect(db_session.get_bind())
+    assert result == []
+    assert "connection_configs" in inspector.get_table_names()
+
+
+def test_create_connection_bootstraps_missing_table(db_session):
+    from src.api.routes.connections import ConnectionCreate, create_connection
+
+    payload = ConnectionCreate(
+        name="Analytics Warehouse",
+        type="postgres",
+        host="warehouse.internal",
+        port=5432,
+        database="analytics",
+        username="reporter",
+        password="secret",
+    )
+
+    created = asyncio.run(create_connection(connection=payload, db=db_session))
+
+    inspector = inspect(db_session.get_bind())
+    assert created.name == "Analytics Warehouse"
+    assert created.host == "warehouse.internal"
+    assert "connection_configs" in inspector.get_table_names()
+
+# [/DEF:backend.src.api.routes.__tests__.test_connections_routes:Module]

backend/src/api/routes/__tests__/test_dashboards.py

@@ -1,5 +1,5 @@
 # [DEF:backend.src.api.routes.__tests__.test_dashboards:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @PURPOSE: Unit tests for Dashboards API endpoints
 # @LAYER: API
 # @RELATION: TESTS -> backend.src.api.routes.dashboards

backend/src/api/routes/__tests__/test_datasets.py

@@ -1,5 +1,5 @@
 # [DEF:backend.src.api.routes.__tests__.test_datasets:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: datasets, api, tests, pagination, mapping, docs
 # @PURPOSE: Unit tests for Datasets API endpoints
 # @LAYER: API

backend/src/api/routes/__tests__/test_git_status_route.py

@@ -1,5 +1,5 @@
 # [DEF:backend.src.api.routes.__tests__.test_git_status_route:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: tests, git, api, status, no_repo
 # @PURPOSE: Validate status endpoint behavior for missing and error repository states.
 # @LAYER: Domain (Tests)

backend/src/api/routes/__tests__/test_migration_routes.py

@@ -1,6 +1,6 @@
 # [DEF:backend.src.api.routes.__tests__.test_migration_routes:Module]
 #
-# @TIER:      STANDARD
+# @COMPLEXITY: 3
 # @PURPOSE:   Unit tests for migration API route handlers.
 # @LAYER:     API
 # @RELATION:  VERIFIES -> backend.src.api.routes.migration

backend/src/api/routes/__tests__/test_profile_api.py

@@ -1,5 +1,5 @@
 # [DEF:backend.src.api.routes.__tests__.test_profile_api:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: tests, profile, api, preferences, lookup, contract
 # @PURPOSE: Verifies profile API route contracts for preference read/update and Superset account lookup.
 # @LAYER: API

backend/src/api/routes/__tests__/test_reports_api.py

@@ -1,5 +1,5 @@
 # [DEF:backend.tests.test_reports_api:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: tests, reports, api, contract, pagination, filtering
 # @PURPOSE: Contract tests for GET /api/reports defaults, pagination, and filtering behavior.
 # @LAYER: Domain (Tests)

backend/src/api/routes/__tests__/test_reports_detail_api.py

@@ -1,5 +1,5 @@
 # [DEF:backend.tests.test_reports_detail_api:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: tests, reports, api, detail, diagnostics
 # @PURPOSE: Contract tests for GET /api/reports/{report_id} detail endpoint behavior.
 # @LAYER: Domain (Tests)

backend/src/api/routes/__tests__/test_reports_openapi_conformance.py

@@ -1,5 +1,5 @@
 # [DEF:backend.tests.test_reports_openapi_conformance:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: tests, reports, openapi, conformance
 # @PURPOSE: Validate implemented reports payload shape against OpenAPI-required top-level contract fields.
 # @LAYER: Domain (Tests)

backend/src/api/routes/admin.py

@@ -1,11 +1,11 @@
 # [DEF:backend.src.api.routes.admin:Module]
 #
-# @TIER:      STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: api, admin, users, roles, permissions
 # @PURPOSE:   Admin API endpoints for user and role management.
 # @LAYER:     API
-# @RELATION:  USES -> backend.src.core.auth.repository.AuthRepository
-# @RELATION:  USES -> backend.src.dependencies.has_permission
+# @RELATION:  [USES] ->[backend.src.core.auth.repository.AuthRepository]
+# @RELATION:  [USES] ->[backend.src.dependencies.has_permission]
 #
 # @INVARIANT: All endpoints in this module require 'Admin' role or 'admin' scope.
 
@@ -36,6 +36,7 @@ router = APIRouter(prefix="/api/admin", tags=["admin"])
 # [/DEF:router:Variable]
 
 # [DEF:list_users:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Lists all registered users.
 # @PRE:     Current user has 'Admin' role.
 # @POST:    Returns a list of UserSchema objects.
@@ -52,6 +53,7 @@ async def list_users(
 # [/DEF:list_users:Function]
 
 # [DEF:create_user:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Creates a new local user.
 # @PRE:     Current user has 'Admin' role.
 # @POST:    New user is created in the database.
@@ -89,6 +91,7 @@ async def create_user(
 # [/DEF:create_user:Function]
 
 # [DEF:update_user:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Updates an existing user.
 @router.put("/users/{user_id}", response_model=UserSchema)
 async def update_user(
@@ -123,6 +126,7 @@ async def update_user(
 # [/DEF:update_user:Function]
 
 # [DEF:delete_user:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Deletes a user.
 @router.delete("/users/{user_id}", status_code=status.HTTP_204_NO_CONTENT)
 async def delete_user(
@@ -146,6 +150,7 @@ async def delete_user(
 # [/DEF:delete_user:Function]
 
 # [DEF:list_roles:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Lists all available roles.
 # @RETURN:  List[RoleSchema] - List of roles.
 # @RELATION: CALLS -> backend.src.models.auth.Role
@@ -159,6 +164,7 @@ async def list_roles(
 # [/DEF:list_roles:Function]
 
 # [DEF:create_role:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Creates a new system role with associated permissions.
 # @PRE:     Role name must be unique.
 # @POST:    New Role record is created in auth.db.
@@ -196,6 +202,7 @@ async def create_role(
 # [/DEF:create_role:Function]
 
 # [DEF:update_role:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Updates an existing role's metadata and permissions.
 # @PRE:     role_id must be a valid existing role UUID.
 # @POST:    Role record is updated in auth.db.
@@ -240,6 +247,7 @@ async def update_role(
 # [/DEF:update_role:Function]
 
 # [DEF:delete_role:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Removes a role from the system.
 # @PRE:     role_id must be a valid existing role UUID.
 # @POST:    Role record is removed from auth.db.
@@ -266,6 +274,7 @@ async def delete_role(
 # [/DEF:delete_role:Function]
 
 # [DEF:list_permissions:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Lists all available system permissions for assignment.
 # @POST:    Returns a list of all PermissionSchema objects.
 # @PARAM:   db (Session) - Auth database session.
@@ -291,6 +300,7 @@ async def list_permissions(
 # [/DEF:list_permissions:Function]
 
 # [DEF:list_ad_mappings:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Lists all AD Group to Role mappings.
 @router.get("/ad-mappings", response_model=List[ADGroupMappingSchema])
 async def list_ad_mappings(
@@ -302,6 +312,7 @@ async def list_ad_mappings(
 # [/DEF:list_ad_mappings:Function]
 
 # [DEF:create_ad_mapping:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Creates a new AD Group mapping.
 @router.post("/ad-mappings", response_model=ADGroupMappingSchema)
 async def create_ad_mapping(

backend/src/api/routes/assistant.py

@@ -1,10 +1,10 @@
 # [DEF:backend.src.api.routes.assistant:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: api, assistant, chat, command, confirmation
 # @PURPOSE: API routes for LLM assistant command parsing and safe execution orchestration.
 # @LAYER: API
-# @RELATION: DEPENDS_ON -> backend.src.core.task_manager
-# @RELATION: DEPENDS_ON -> backend.src.models.assistant
+# @RELATION: [DEPENDS_ON] ->[backend.src.core.task_manager.manager.TaskManager]
+# @RELATION: [DEPENDS_ON] ->[backend.src.models.assistant]
 # @INVARIANT: Risky operations are never executed without valid confirmation token.
 
 from __future__ import annotations
@@ -47,7 +47,7 @@ git_service = GitService()
 
 
 # [DEF:AssistantMessageRequest:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Input payload for assistant message endpoint.
 # @PRE: message length is within accepted bounds.
 # @POST: Request object provides message text and optional conversation binding.
@@ -58,7 +58,7 @@ class AssistantMessageRequest(BaseModel):
 
 
 # [DEF:AssistantAction:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: UI action descriptor returned with assistant responses.
 # @PRE: type and label are provided by orchestration logic.
 # @POST: Action can be rendered as button on frontend.
@@ -70,7 +70,7 @@ class AssistantAction(BaseModel):
 
 
 # [DEF:AssistantMessageResponse:Class]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @PURPOSE: Output payload contract for assistant interaction endpoints.
 # @PRE: Response includes deterministic state and text.
 # @POST: Payload may include task_id/confirmation_id/actions for UI follow-up.
@@ -88,7 +88,7 @@ class AssistantMessageResponse(BaseModel):
 
 
 # [DEF:ConfirmationRecord:Class]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @PURPOSE: In-memory confirmation token model for risky operation dispatch.
 # @PRE: intent/dispatch/user_id are populated at confirmation request time.
 # @POST: Record tracks lifecycle state and expiry timestamp.
@@ -125,6 +125,7 @@ INTENT_PERMISSION_CHECKS: Dict[str, List[Tuple[str, str]]] = {
 
 
 # [DEF:_append_history:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Append conversation message to in-memory history buffer.
 # @PRE: user_id and conversation_id identify target conversation bucket.
 # @POST: Message entry is appended to CONVERSATIONS key list.
@@ -156,6 +157,7 @@ def _append_history(
 
 
 # [DEF:_persist_message:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Persist assistant/user message record to database.
 # @PRE: db session is writable and message payload is serializable.
 # @POST: Message row is committed or persistence failure is logged.
@@ -191,6 +193,7 @@ def _persist_message(
 
 
 # [DEF:_audit:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Append in-memory audit record for assistant decision trace.
 # @PRE: payload describes decision/outcome fields.
 # @POST: ASSISTANT_AUDIT list for user contains new timestamped entry.
@@ -203,6 +206,7 @@ def _audit(user_id: str, payload: Dict[str, Any]):
 
 
 # [DEF:_persist_audit:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Persist structured assistant audit payload in database.
 # @PRE: db session is writable and payload is JSON-serializable.
 # @POST: Audit row is committed or failure is logged with rollback.
@@ -226,6 +230,7 @@ def _persist_audit(db: Session, user_id: str, payload: Dict[str, Any], conversat
 
 
 # [DEF:_persist_confirmation:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Persist confirmation token record to database.
 # @PRE: record contains id/user/intent/dispatch/expiry fields.
 # @POST: Confirmation row exists in persistent storage.
@@ -251,6 +256,7 @@ def _persist_confirmation(db: Session, record: ConfirmationRecord):
 
 
 # [DEF:_update_confirmation_state:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Update persistent confirmation token lifecycle state.
 # @PRE: confirmation_id references existing row.
 # @POST: State and consumed_at fields are updated when applicable.
@@ -270,6 +276,7 @@ def _update_confirmation_state(db: Session, confirmation_id: str, state: str):
 
 
 # [DEF:_load_confirmation_from_db:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Load confirmation token from database into in-memory model.
 # @PRE: confirmation_id may or may not exist in storage.
 # @POST: Returns ConfirmationRecord when found, otherwise None.
@@ -295,6 +302,7 @@ def _load_confirmation_from_db(db: Session, confirmation_id: str) -> Optional[Co
 
 
 # [DEF:_ensure_conversation:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Resolve active conversation id in memory or create a new one.
 # @PRE: user_id identifies current actor.
 # @POST: Returns stable conversation id and updates USER_ACTIVE_CONVERSATION.
@@ -314,6 +322,7 @@ def _ensure_conversation(user_id: str, conversation_id: Optional[str]) -> str:
 
 
 # [DEF:_resolve_or_create_conversation:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Resolve active conversation using explicit id, memory cache, or persisted history.
 # @PRE: user_id and db session are available.
 # @POST: Returns conversation id and updates USER_ACTIVE_CONVERSATION cache.
@@ -343,6 +352,7 @@ def _resolve_or_create_conversation(user_id: str, conversation_id: Optional[str]
 
 
 # [DEF:_cleanup_history_ttl:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Enforce assistant message retention window by deleting expired rows and in-memory records.
 # @PRE: db session is available and user_id references current actor scope.
 # @POST: Messages older than ASSISTANT_MESSAGE_TTL_DAYS are removed from persistence and memory mirrors.
@@ -380,6 +390,7 @@ def _cleanup_history_ttl(db: Session, user_id: str):
 
 
 # [DEF:_is_conversation_archived:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Determine archived state for a conversation based on last update timestamp.
 # @PRE: updated_at can be null for empty conversations.
 # @POST: Returns True when conversation inactivity exceeds archive threshold.
@@ -392,6 +403,7 @@ def _is_conversation_archived(updated_at: Optional[datetime]) -> bool:
 
 
 # [DEF:_coerce_query_bool:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Normalize bool-like query values for compatibility in direct handler invocations/tests.
 # @PRE: value may be bool, string, or FastAPI Query metadata object.
 # @POST: Returns deterministic boolean flag.
@@ -405,6 +417,7 @@ def _coerce_query_bool(value: Any) -> bool:
 
 
 # [DEF:_extract_id:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Extract first regex match group from text by ordered pattern list.
 # @PRE: patterns contain at least one capture group.
 # @POST: Returns first matched token or None.
@@ -418,6 +431,7 @@ def _extract_id(text: str, patterns: List[str]) -> Optional[str]:
 
 
 # [DEF:_resolve_env_id:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Resolve environment identifier/name token to canonical environment id.
 # @PRE: config_manager provides environment list.
 # @POST: Returns matched environment id or None.
@@ -435,6 +449,7 @@ def _resolve_env_id(token: Optional[str], config_manager: ConfigManager) -> Opti
 
 
 # [DEF:_is_production_env:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Determine whether environment token resolves to production-like target.
 # @PRE: config_manager provides environments or token text is provided.
 # @POST: Returns True for production/prod synonyms, else False.
@@ -452,6 +467,7 @@ def _is_production_env(token: Optional[str], config_manager: ConfigManager) -> b
 
 
 # [DEF:_resolve_provider_id:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Resolve provider token to provider id with active/default fallback.
 # @PRE: db session can load provider list through LLMProviderService.
 # @POST: Returns provider id or None when no providers configured.
@@ -487,6 +503,7 @@ def _resolve_provider_id(
 
 
 # [DEF:_get_default_environment_id:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Resolve default environment id from settings or first configured environment.
 # @PRE: config_manager returns environments list.
 # @POST: Returns default environment id or None when environment list is empty.
@@ -508,6 +525,7 @@ def _get_default_environment_id(config_manager: ConfigManager) -> Optional[str]:
 
 
 # [DEF:_resolve_dashboard_id_by_ref:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Resolve dashboard id by title or slug reference in selected environment.
 # @PRE: dashboard_ref is a non-empty string-like token.
 # @POST: Returns dashboard id when uniquely matched, otherwise None.
@@ -550,6 +568,7 @@ def _resolve_dashboard_id_by_ref(
 
 
 # [DEF:_resolve_dashboard_id_entity:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Resolve dashboard id from intent entities using numeric id or dashboard_ref fallback.
 # @PRE: entities may contain dashboard_id as int/str and optional dashboard_ref.
 # @POST: Returns resolved dashboard id or None when ambiguous/unresolvable.
@@ -581,6 +600,7 @@ def _resolve_dashboard_id_entity(
 
 
 # [DEF:_get_environment_name_by_id:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Resolve human-readable environment name by id.
 # @PRE: environment id may be None.
 # @POST: Returns matching environment name or fallback id.
@@ -593,6 +613,7 @@ def _get_environment_name_by_id(env_id: Optional[str], config_manager: ConfigMan
 
 
 # [DEF:_extract_result_deep_links:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Build deep-link actions to verify task result from assistant chat.
 # @PRE: task object is available.
 # @POST: Returns zero or more assistant actions for dashboard open/diff.
@@ -649,6 +670,7 @@ def _extract_result_deep_links(task: Any, config_manager: ConfigManager) -> List
 
 
 # [DEF:_build_task_observability_summary:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Build compact textual summary for completed tasks to reduce "black box" effect.
 # @PRE: task may contain plugin-specific result payload.
 # @POST: Returns non-empty summary line for known task types or empty string fallback.
@@ -712,6 +734,7 @@ def _build_task_observability_summary(task: Any, config_manager: ConfigManager)
 
 
 # [DEF:_parse_command:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Deterministically parse RU/EN command text into intent payload.
 # @PRE: message contains raw user text and config manager resolves environments.
 # @POST: Returns intent dict with domain/operation/entities/confidence/risk fields.
@@ -905,6 +928,7 @@ def _parse_command(message: str, config_manager: ConfigManager) -> Dict[str, Any
 
 
 # [DEF:_check_any_permission:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Validate user against alternative permission checks (logical OR).
 # @PRE: checks list contains resource-action tuples.
 # @POST: Returns on first successful permission; raises 403-like HTTPException otherwise.
@@ -922,6 +946,7 @@ def _check_any_permission(current_user: User, checks: List[Tuple[str, str]]):
 
 
 # [DEF:_has_any_permission:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Check whether user has at least one permission tuple from the provided list.
 # @PRE: current_user and checks list are valid.
 # @POST: Returns True when at least one permission check passes.
@@ -935,6 +960,7 @@ def _has_any_permission(current_user: User, checks: List[Tuple[str, str]]) -> bo
 
 
 # [DEF:_build_tool_catalog:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Build current-user tool catalog for LLM planner with operation contracts and defaults.
 # @PRE: current_user is authenticated; config/db are available.
 # @POST: Returns list of executable tools filtered by permission and runtime availability.
@@ -1058,6 +1084,7 @@ def _build_tool_catalog(current_user: User, config_manager: ConfigManager, db: S
 
 
 # [DEF:_coerce_intent_entities:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Normalize intent entity value types from LLM output to route-compatible values.
 # @PRE: intent contains entities dict or missing entities.
 # @POST: Returned intent has numeric ids coerced where possible and string values stripped.
@@ -1082,6 +1109,7 @@ _SAFE_OPS = {"show_capabilities", "get_task_status", "get_health_summary"}
 
 
 # [DEF:_confirmation_summary:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Build human-readable confirmation prompt for an intent before execution.
 # @PRE: intent contains operation and entities fields.
 # @POST: Returns descriptive Russian-language text ending with confirmation prompt.
@@ -1177,6 +1205,7 @@ async def _async_confirmation_summary(intent: Dict[str, Any], config_manager: Co
 
 
 # [DEF:_clarification_text_for_intent:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Convert technical missing-parameter errors into user-facing clarification prompts.
 # @PRE: state was classified as needs_clarification for current intent/error combination.
 # @POST: Returned text is human-readable and actionable for target operation.
@@ -1200,6 +1229,7 @@ def _clarification_text_for_intent(intent: Optional[Dict[str, Any]], detail_text
 
 
 # [DEF:_plan_intent_with_llm:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Use active LLM provider to select best tool/operation from dynamic catalog.
 # @PRE: tools list contains allowed operations for current user.
 # @POST: Returns normalized intent dict when planning succeeds; otherwise None.
@@ -1310,6 +1340,7 @@ async def _plan_intent_with_llm(
 
 
 # [DEF:_authorize_intent:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Validate user permissions for parsed intent before confirmation/dispatch.
 # @PRE: intent.operation is present for known assistant command domains.
 # @POST: Returns if authorized; raises HTTPException(403) when denied.
@@ -1321,6 +1352,7 @@ def _authorize_intent(intent: Dict[str, Any], current_user: User):
 
 
 # [DEF:_dispatch_intent:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Execute parsed assistant intent via existing task/plugin/git services.
 # @PRE: intent operation is known and actor permissions are validated per operation.
 # @POST: Returns response text, optional task id, and UI actions for follow-up.
@@ -1642,6 +1674,7 @@ async def _dispatch_intent(
 
 @router.post("/messages", response_model=AssistantMessageResponse)
 # [DEF:send_message:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Parse assistant command, enforce safety gates, and dispatch executable intent.
 # @PRE: Authenticated user is available and message text is non-empty.
 # @POST: Response state is one of clarification/confirmation/started/success/denied/failed.
@@ -1811,6 +1844,7 @@ async def send_message(
 
 @router.post("/confirmations/{confirmation_id}/confirm", response_model=AssistantMessageResponse)
 # [DEF:confirm_operation:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Execute previously requested risky operation after explicit user confirmation.
 # @PRE: confirmation_id exists, belongs to current user, is pending, and not expired.
 # @POST: Confirmation state becomes consumed and operation result is persisted in history.
@@ -1877,6 +1911,7 @@ async def confirm_operation(
 
 @router.post("/confirmations/{confirmation_id}/cancel", response_model=AssistantMessageResponse)
 # [DEF:cancel_operation:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Cancel pending risky operation and mark confirmation token as cancelled.
 # @PRE: confirmation_id exists, belongs to current user, and is still pending.
 # @POST: Confirmation becomes cancelled and cannot be executed anymore.
@@ -1933,6 +1968,7 @@ async def cancel_operation(
 
 
 # [DEF:list_conversations:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Return paginated conversation list for current user with archived flag and last message preview.
 # @PRE: Authenticated user context and valid pagination params.
 # @POST: Conversations are grouped by conversation_id sorted by latest activity descending.
@@ -2020,6 +2056,7 @@ async def list_conversations(
 
 
 # [DEF:delete_conversation:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Soft-delete or hard-delete a conversation and clear its in-memory trace.
 # @PRE: conversation_id belongs to current_user.
 # @POST: Conversation records are removed from DB and CONVERSATIONS cache.

backend/src/api/routes/clean_release.py

@@ -1,5 +1,5 @@
 # [DEF:backend.src.api.routes.clean_release:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: api, clean-release, candidate-preparation, compliance
 # @PURPOSE: Expose clean release endpoints for candidate preparation and subsequent compliance flow.
 # @LAYER: API

backend/src/api/routes/clean_release_v2.py

@@ -1,5 +1,5 @@
 # [DEF:backend.src.api.routes.clean_release_v2:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: api, clean-release, v2, headless
 # @PURPOSE: Redesigned clean release API for headless candidate lifecycle.
 # @LAYER: API

backend/src/api/routes/connections.py

@@ -9,7 +9,7 @@
 from typing import List, Optional
 from fastapi import APIRouter, Depends, HTTPException, status
 from sqlalchemy.orm import Session
-from ...core.database import get_db
+from ...core.database import get_db, ensure_connection_configs_table
 from ...models.connection import ConnectionConfig
 from pydantic import BaseModel
 from datetime import datetime
@@ -18,6 +18,16 @@ from ...core.logger import logger, belief_scope
 
 router = APIRouter()
 
+
+# [DEF:_ensure_connections_schema:Function]
+# @PURPOSE: Ensures the connection_configs table exists before CRUD access.
+# @PRE: db is an active SQLAlchemy session.
+# @POST: The current bind can safely query ConnectionConfig.
+def _ensure_connections_schema(db: Session):
+    with belief_scope("ConnectionsRouter.ensure_schema"):
+        ensure_connection_configs_table(db.get_bind())
+# [/DEF:_ensure_connections_schema:Function]
+
 # [DEF:ConnectionSchema:Class]
 # @PURPOSE: Pydantic model for connection response.
 class ConnectionSchema(BaseModel):
@@ -55,6 +65,7 @@ class ConnectionCreate(BaseModel):
 @router.get("", response_model=List[ConnectionSchema])
 async def list_connections(db: Session = Depends(get_db)):
     with belief_scope("ConnectionsRouter.list_connections"):
+        _ensure_connections_schema(db)
         connections = db.query(ConnectionConfig).all()
         return connections
 # [/DEF:list_connections:Function]
@@ -69,6 +80,7 @@ async def list_connections(db: Session = Depends(get_db)):
 @router.post("", response_model=ConnectionSchema, status_code=status.HTTP_201_CREATED)
 async def create_connection(connection: ConnectionCreate, db: Session = Depends(get_db)):
     with belief_scope("ConnectionsRouter.create_connection", f"name={connection.name}"):
+        _ensure_connections_schema(db)
         db_connection = ConnectionConfig(**connection.dict())
         db.add(db_connection)
         db.commit()
@@ -87,6 +99,7 @@ async def create_connection(connection: ConnectionCreate, db: Session = Depends(
 @router.delete("/{connection_id}", status_code=status.HTTP_204_NO_CONTENT)
 async def delete_connection(connection_id: str, db: Session = Depends(get_db)):
     with belief_scope("ConnectionsRouter.delete_connection", f"id={connection_id}"):
+        _ensure_connections_schema(db)
         db_connection = db.query(ConnectionConfig).filter(ConnectionConfig.id == connection_id).first()
         if not db_connection:
             logger.error(f"[ConnectionsRouter.delete_connection][State] Connection {connection_id} not found")
@@ -97,4 +110,4 @@ async def delete_connection(connection_id: str, db: Session = Depends(get_db)):
         return
 # [/DEF:delete_connection:Function]
 
-# [/DEF:ConnectionsRouter:Module]
+# [/DEF:ConnectionsRouter:Module]

backend/src/api/routes/dashboards.py

@@ -1,15 +1,20 @@
 # [DEF:backend.src.api.routes.dashboards:Module]
 #
-# @TIER: CRITICAL
+# @COMPLEXITY: 5
 # @SEMANTICS: api, dashboards, resources, hub
 # @PURPOSE:   API endpoints for the Dashboard Hub - listing dashboards with Git and task status
 # @LAYER:     API
-# @RELATION:  DEPENDS_ON -> backend.src.dependencies
-# @RELATION:  DEPENDS_ON -> backend.src.services.resource_service
-# @RELATION:  DEPENDS_ON -> backend.src.core.superset_client
+# @RELATION:  DEPENDS_ON ->[backend.src.dependencies]
+# @RELATION:  DEPENDS_ON ->[backend.src.services.resource_service.ResourceService]
+# @RELATION:  DEPENDS_ON ->[backend.src.core.superset_client.SupersetClient]
 #
 # @INVARIANT: All dashboard responses include git_status and last_task metadata
 #
+# @PRE: Valid environment configurations exist in ConfigManager.
+# @POST: Dashboard responses are projected into DashboardsResponse DTO.
+# @SIDE_EFFECT: Performs external calls to Superset API and potentially Git providers.
+# @DATA_CONTRACT: Input(env_id, filters) -> Output(DashboardsResponse)
+#
 # @TEST_CONTRACT: DashboardsAPI -> {
 #    required_fields: {env_id: string, page: integer, page_size: integer},
 #    optional_fields: {search: string},
@@ -61,6 +66,8 @@ from ...services.resource_service import ResourceService
 router = APIRouter(prefix="/api/dashboards", tags=["Dashboards"])
 
 # [DEF:GitStatus:DataClass]
+# @COMPLEXITY: 3
+# @PURPOSE: DTO for dashboard Git synchronization status.
 class GitStatus(BaseModel):
     branch: Optional[str] = None
     sync_status: Optional[str] = Field(None, pattern="^OK|DIFF|NO_REPO|ERROR$")
@@ -69,6 +76,8 @@ class GitStatus(BaseModel):
 # [/DEF:GitStatus:DataClass]
 
 # [DEF:LastTask:DataClass]
+# @COMPLEXITY: 3
+# @PURPOSE: DTO for the most recent background task associated with a dashboard.
 class LastTask(BaseModel):
     task_id: Optional[str] = None
     status: Optional[str] = Field(
@@ -79,6 +88,8 @@ class LastTask(BaseModel):
 # [/DEF:LastTask:DataClass]
 
 # [DEF:DashboardItem:DataClass]
+# @COMPLEXITY: 3
+# @PURPOSE: DTO representing a single dashboard with projected metadata.
 class DashboardItem(BaseModel):
     id: int
     title: str
@@ -93,6 +104,8 @@ class DashboardItem(BaseModel):
 # [/DEF:DashboardItem:DataClass]
 
 # [DEF:EffectiveProfileFilter:DataClass]
+# @COMPLEXITY: 3
+# @PURPOSE: Metadata about applied profile filters for UI context.
 class EffectiveProfileFilter(BaseModel):
     applied: bool
     source_page: Literal["dashboards_main", "other"] = "dashboards_main"
@@ -104,6 +117,8 @@ class EffectiveProfileFilter(BaseModel):
 # [/DEF:EffectiveProfileFilter:DataClass]
 
 # [DEF:DashboardsResponse:DataClass]
+# @COMPLEXITY: 3
+# @PURPOSE: Envelope DTO for paginated dashboards list.
 class DashboardsResponse(BaseModel):
     dashboards: List[DashboardItem]
     total: int
@@ -114,6 +129,8 @@ class DashboardsResponse(BaseModel):
 # [/DEF:DashboardsResponse:DataClass]
 
 # [DEF:DashboardChartItem:DataClass]
+# @COMPLEXITY: 3
+# @PURPOSE: DTO for a chart linked to a dashboard.
 class DashboardChartItem(BaseModel):
     id: int
     title: str
@@ -124,6 +141,8 @@ class DashboardChartItem(BaseModel):
 # [/DEF:DashboardChartItem:DataClass]
 
 # [DEF:DashboardDatasetItem:DataClass]
+# @COMPLEXITY: 3
+# @PURPOSE: DTO for a dataset associated with a dashboard.
 class DashboardDatasetItem(BaseModel):
     id: int
     table_name: str
@@ -134,6 +153,8 @@ class DashboardDatasetItem(BaseModel):
 # [/DEF:DashboardDatasetItem:DataClass]
 
 # [DEF:DashboardDetailResponse:DataClass]
+# @COMPLEXITY: 3
+# @PURPOSE: Detailed dashboard metadata including children.
 class DashboardDetailResponse(BaseModel):
     id: int
     title: str
@@ -149,6 +170,8 @@ class DashboardDetailResponse(BaseModel):
 # [/DEF:DashboardDetailResponse:DataClass]
 
 # [DEF:DashboardTaskHistoryItem:DataClass]
+# @COMPLEXITY: 3
+# @PURPOSE: Individual history record entry.
 class DashboardTaskHistoryItem(BaseModel):
     id: str
     plugin_id: str
@@ -161,12 +184,16 @@ class DashboardTaskHistoryItem(BaseModel):
 # [/DEF:DashboardTaskHistoryItem:DataClass]
 
 # [DEF:DashboardTaskHistoryResponse:DataClass]
+# @COMPLEXITY: 3
+# @PURPOSE: Collection DTO for task history.
 class DashboardTaskHistoryResponse(BaseModel):
     dashboard_id: int
     items: List[DashboardTaskHistoryItem]
 # [/DEF:DashboardTaskHistoryResponse:DataClass]
 
 # [DEF:DatabaseMapping:DataClass]
+# @COMPLEXITY: 3
+# @PURPOSE: DTO for cross-environment database ID mapping.
 class DatabaseMapping(BaseModel):
     source_db: str
     target_db: str
@@ -176,12 +203,15 @@ class DatabaseMapping(BaseModel):
 # [/DEF:DatabaseMapping:DataClass]
 
 # [DEF:DatabaseMappingsResponse:DataClass]
+# @COMPLEXITY: 3
+# @PURPOSE: Wrapper for database mappings.
 class DatabaseMappingsResponse(BaseModel):
     mappings: List[DatabaseMapping]
 # [/DEF:DatabaseMappingsResponse:DataClass]
 
 
 # [DEF:_find_dashboard_id_by_slug:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Resolve dashboard numeric ID by slug using Superset list endpoint.
 # @PRE: `dashboard_slug` is non-empty.
 # @POST: Returns dashboard ID when found, otherwise None.
@@ -209,6 +239,7 @@ def _find_dashboard_id_by_slug(
 
 
 # [DEF:_resolve_dashboard_id_from_ref:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Resolve dashboard ID from slug-first reference with numeric fallback.
 # @PRE: `dashboard_ref` is provided in route path.
 # @POST: Returns a valid dashboard ID or raises HTTPException(404).
@@ -233,6 +264,7 @@ def _resolve_dashboard_id_from_ref(
 
 
 # [DEF:_find_dashboard_id_by_slug_async:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Resolve dashboard numeric ID by slug using async Superset list endpoint.
 # @PRE: dashboard_slug is non-empty.
 # @POST: Returns dashboard ID when found, otherwise None.
@@ -260,6 +292,7 @@ async def _find_dashboard_id_by_slug_async(
 
 
 # [DEF:_resolve_dashboard_id_from_ref_async:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Resolve dashboard ID from slug-first reference using async Superset client.
 # @PRE: dashboard_ref is provided in route path.
 # @POST: Returns valid dashboard ID or raises HTTPException(404).
@@ -283,6 +316,7 @@ async def _resolve_dashboard_id_from_ref_async(
 
 
 # [DEF:_normalize_filter_values:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Normalize query filter values to lower-cased non-empty tokens.
 # @PRE: values may be None or list of strings.
 # @POST: Returns trimmed normalized list preserving input order.
@@ -299,6 +333,7 @@ def _normalize_filter_values(values: Optional[List[str]]) -> List[str]:
 
 
 # [DEF:_dashboard_git_filter_value:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Build comparable git status token for dashboards filtering.
 # @PRE: dashboard payload may contain git_status or None.
 # @POST: Returns one of ok|diff|no_repo|error|pending.
@@ -318,6 +353,7 @@ def _dashboard_git_filter_value(dashboard: Dict[str, Any]) -> str:
 # [/DEF:_dashboard_git_filter_value:Function]
 
 # [DEF:_normalize_actor_alias_token:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Normalize actor alias token to comparable trim+lower text.
 # @PRE: value can be scalar/None.
 # @POST: Returns normalized token or None.
@@ -328,6 +364,7 @@ def _normalize_actor_alias_token(value: Any) -> Optional[str]:
 
 
 # [DEF:_normalize_owner_display_token:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Project owner payload value into stable display string for API response contracts.
 # @PRE: owner can be scalar, dict or None.
 # @POST: Returns trimmed non-empty owner display token or None.
@@ -354,6 +391,7 @@ def _normalize_owner_display_token(owner: Any) -> Optional[str]:
 
 
 # [DEF:_normalize_dashboard_owner_values:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Normalize dashboard owners payload to optional list of display strings.
 # @PRE: owners payload can be None, scalar, or list with mixed values.
 # @POST: Returns deduplicated owner labels preserving order, or None when absent.
@@ -378,6 +416,7 @@ def _normalize_dashboard_owner_values(owners: Any) -> Optional[List[str]]:
 
 
 # [DEF:_project_dashboard_response_items:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Project dashboard payloads to response-contract-safe shape.
 # @PRE: dashboards is a list of dict-like dashboard payloads.
 # @POST: Returned items satisfy DashboardItem owners=list[str]|None contract.
@@ -394,6 +433,7 @@ def _project_dashboard_response_items(dashboards: List[Dict[str, Any]]) -> List[
 
 
 # [DEF:_resolve_profile_actor_aliases:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Resolve stable actor aliases for profile filtering without per-dashboard detail fan-out.
 # @PRE: bound username is available and env is valid.
 # @POST: Returns at least normalized username; may include Superset display-name alias.
@@ -458,6 +498,7 @@ def _resolve_profile_actor_aliases(env: Any, bound_username: str) -> List[str]:
 
 
 # [DEF:_matches_dashboard_actor_aliases:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Apply profile actor matching against multiple aliases (username + optional display name).
 # @PRE: actor_aliases contains normalized non-empty tokens.
 # @POST: Returns True when any alias matches owners OR modified_by.
@@ -479,6 +520,7 @@ def _matches_dashboard_actor_aliases(
 
 
 # [DEF:get_dashboards:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Fetch list of dashboards from a specific environment with Git status and last task status
 # @PRE: env_id must be a valid environment ID
 # @PRE: page must be >= 1 if provided
@@ -491,7 +533,7 @@ def _matches_dashboard_actor_aliases(
 # @PARAM: page (Optional[int]) - Page number (default: 1)
 # @PARAM: page_size (Optional[int]) - Items per page (default: 10, max: 100)
 # @RETURN: DashboardsResponse - List of dashboards with status metadata
-# @RELATION: CALLS -> ResourceService.get_dashboards_with_status
+# @RELATION: CALLS ->[get_dashboards_with_status]
 @router.get("", response_model=DashboardsResponse)
 async def get_dashboards(
     env_id: str,
@@ -547,12 +589,12 @@ async def get_dashboards(
         )
 
         try:
-            profile_preference = profile_service.get_my_preference(current_user).preference
+            profile_preference = profile_service.get_dashboard_filter_binding(current_user)
             normalized_username = str(
-                getattr(profile_preference, "superset_username_normalized", None) or ""
+                profile_preference.get("superset_username_normalized") or ""
             ).strip().lower()
             raw_username = str(
-                getattr(profile_preference, "superset_username", None) or ""
+                profile_preference.get("superset_username") or ""
             ).strip().lower()
             bound_username = normalized_username or raw_username or None
 
@@ -560,14 +602,14 @@ async def get_dashboards(
                 page_context == "dashboards_main"
                 and bool(apply_profile_default)
                 and not bool(override_show_all)
-                and bool(getattr(profile_preference, "show_only_my_dashboards", False))
+                and bool(profile_preference.get("show_only_my_dashboards", False))
                 and bool(bound_username)
             )
             can_apply_slug_filter = (
                 page_context == "dashboards_main"
                 and bool(apply_profile_default)
                 and not bool(override_show_all)
-                and bool(getattr(profile_preference, "show_only_slug_dashboards", True))
+                and bool(profile_preference.get("show_only_slug_dashboards", True))
             )
 
             profile_match_logic = None
@@ -781,6 +823,7 @@ async def get_dashboards(
 # [/DEF:get_dashboards:Function]
 
 # [DEF:get_database_mappings:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Get database mapping suggestions between source and target environments
 # @PRE: User has permission plugin:migration:read
 # @PRE: source_env_id and target_env_id are valid environment IDs
@@ -788,7 +831,7 @@ async def get_dashboards(
 # @PARAM: source_env_id (str) - Source environment ID
 # @PARAM: target_env_id (str) - Target environment ID
 # @RETURN: DatabaseMappingsResponse - List of suggested mappings
-# @RELATION: CALLS -> MappingService.get_suggestions
+# @RELATION: CALLS ->[MappingService:get_suggestions]
 @router.get("/db-mappings", response_model=DatabaseMappingsResponse)
 async def get_database_mappings(
     source_env_id: str,
@@ -836,10 +879,11 @@ async def get_database_mappings(
 # [/DEF:get_database_mappings:Function]
 
 # [DEF:get_dashboard_detail:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Fetch detailed dashboard info with related charts and datasets
 # @PRE: env_id must be valid and dashboard ref (slug or id) must exist
 # @POST: Returns dashboard detail payload for overview page
-# @RELATION: CALLS -> SupersetClient.get_dashboard_detail
+# @RELATION: CALLS ->[backend.src.core.async_superset_client.AsyncSupersetClient.get_dashboard_detail_async]
 @router.get("/{dashboard_ref}", response_model=DashboardDetailResponse)
 async def get_dashboard_detail(
     dashboard_ref: str,
@@ -873,6 +917,7 @@ async def get_dashboard_detail(
 
 
 # [DEF:_task_matches_dashboard:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Checks whether task params are tied to a specific dashboard and environment.
 # @PRE: task-like object exposes plugin_id and params fields.
 # @POST: Returns True only for supported task plugins tied to dashboard_id (+optional env_id).
@@ -906,6 +951,7 @@ def _task_matches_dashboard(task: Any, dashboard_id: int, env_id: Optional[str])
 
 
 # [DEF:get_dashboard_tasks_history:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Returns history of backup and LLM validation tasks for a dashboard.
 # @PRE: dashboard ref (slug or id) is valid.
 # @POST: Response contains sorted task history (newest first).
@@ -992,6 +1038,7 @@ async def get_dashboard_tasks_history(
 
 
 # [DEF:get_dashboard_thumbnail:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Proxies Superset dashboard thumbnail with cache support.
 # @PRE: env_id must exist.
 # @POST: Returns image bytes or 202 when thumbnail is being prepared by Superset.
@@ -1072,7 +1119,7 @@ async def get_dashboard_thumbnail(
 
             content_type = thumb_response.headers.get("Content-Type", "image/png")
             return Response(content=thumb_response.content, media_type=content_type)
-        except DashboardNotFoundError as e:
+        except DashboardNotFoundError as e: 
             logger.error(f"[get_dashboard_thumbnail][Coherence:Failed] Dashboard not found for thumbnail: {e}")
             raise HTTPException(status_code=404, detail="Dashboard thumbnail not found")
         except HTTPException:
@@ -1085,6 +1132,8 @@ async def get_dashboard_thumbnail(
 # [/DEF:get_dashboard_thumbnail:Function]
 
 # [DEF:MigrateRequest:DataClass]
+# @COMPLEXITY: 3
+# @PURPOSE: DTO for dashboard migration requests.
 class MigrateRequest(BaseModel):
     source_env_id: str = Field(..., description="Source environment ID")
     target_env_id: str = Field(..., description="Target environment ID")
@@ -1094,11 +1143,14 @@ class MigrateRequest(BaseModel):
 # [/DEF:MigrateRequest:DataClass]
 
 # [DEF:TaskResponse:DataClass]
+# @COMPLEXITY: 3
+# @PURPOSE: DTO for async task ID return.
 class TaskResponse(BaseModel):
     task_id: str
 # [/DEF:TaskResponse:DataClass]
 
 # [DEF:migrate_dashboards:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Trigger bulk migration of dashboards from source to target environment
 # @PRE: User has permission plugin:migration:execute
 # @PRE: source_env_id and target_env_id are valid environment IDs
@@ -1107,8 +1159,8 @@ class TaskResponse(BaseModel):
 # @POST: Task is created and queued for execution
 # @PARAM: request (MigrateRequest) - Migration request with source, target, and dashboard IDs
 # @RETURN: TaskResponse - Task ID for tracking
-# @RELATION: DISPATCHES -> MigrationPlugin
-# @RELATION: CALLS -> task_manager.create_task
+# @RELATION: DISPATCHES ->[MigrationPlugin:execute]
+# @RELATION: CALLS ->[task_manager:create_task]
 @router.post("/migrate", response_model=TaskResponse)
 async def migrate_dashboards(
     request: MigrateRequest,
@@ -1159,6 +1211,8 @@ async def migrate_dashboards(
 # [/DEF:migrate_dashboards:Function]
 
 # [DEF:BackupRequest:DataClass]
+# @COMPLEXITY: 3
+# @PURPOSE: DTO for dashboard backup requests.
 class BackupRequest(BaseModel):
     env_id: str = Field(..., description="Environment ID")
     dashboard_ids: List[int] = Field(..., description="List of dashboard IDs to backup")
@@ -1166,6 +1220,7 @@ class BackupRequest(BaseModel):
 # [/DEF:BackupRequest:DataClass]
 
 # [DEF:backup_dashboards:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Trigger bulk backup of dashboards with optional cron schedule
 # @PRE: User has permission plugin:backup:execute
 # @PRE: env_id is a valid environment ID
@@ -1175,8 +1230,8 @@ class BackupRequest(BaseModel):
 # @POST: If schedule is provided, a scheduled task is created
 # @PARAM: request (BackupRequest) - Backup request with environment and dashboard IDs
 # @RETURN: TaskResponse - Task ID for tracking
-# @RELATION: DISPATCHES -> BackupPlugin
-# @RELATION: CALLS -> task_manager.create_task
+# @RELATION: DISPATCHES ->[BackupPlugin:execute]
+# @RELATION: CALLS ->[task_manager:create_task]
 @router.post("/backup", response_model=TaskResponse)
 async def backup_dashboards(
     request: BackupRequest,

backend/src/api/routes/datasets.py

@@ -1,12 +1,12 @@
 # [DEF:backend.src.api.routes.datasets:Module]
 #
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: api, datasets, resources, hub
 # @PURPOSE:   API endpoints for the Dataset Hub - listing datasets with mapping progress
 # @LAYER:     API
-# @RELATION:  DEPENDS_ON -> backend.src.dependencies
-# @RELATION:  DEPENDS_ON -> backend.src.services.resource_service
-# @RELATION:  DEPENDS_ON -> backend.src.core.superset_client
+# @RELATION:  DEPENDS_ON ->[backend.src.dependencies]
+# @RELATION:  DEPENDS_ON ->[backend.src.services.resource_service.ResourceService]
+# @RELATION:  DEPENDS_ON ->[backend.src.core.superset_client.SupersetClient]
 #
 # @INVARIANT: All dataset responses include last_task metadata
 
@@ -22,28 +22,39 @@ from ...core.superset_client import SupersetClient
 router = APIRouter(prefix="/api/datasets", tags=["Datasets"])
 
 # [DEF:MappedFields:DataClass]
+# @COMPLEXITY: 1
+# @PURPOSE: DTO for dataset mapping progress statistics
 class MappedFields(BaseModel):
     total: int
     mapped: int
 # [/DEF:MappedFields:DataClass]
 
 # [DEF:LastTask:DataClass]
+# @COMPLEXITY: 1
+# @PURPOSE: DTO for the most recent task associated with a dataset
 class LastTask(BaseModel):
     task_id: Optional[str] = None
     status: Optional[str] = Field(None, pattern="^RUNNING|SUCCESS|ERROR|WAITING_INPUT$")
 # [/DEF:LastTask:DataClass]
 
 # [DEF:DatasetItem:DataClass]
+# @COMPLEXITY: 1
+# @PURPOSE: Summary DTO for a dataset in the hub listing
 class DatasetItem(BaseModel):
     id: int
     table_name: str
-    schema: str
+    schema_name: str = Field(..., alias="schema")
     database: str
     mapped_fields: Optional[MappedFields] = None
     last_task: Optional[LastTask] = None
+
+    class Config:
+        allow_population_by_field_name = True
 # [/DEF:DatasetItem:DataClass]
 
 # [DEF:LinkedDashboard:DataClass]
+# @COMPLEXITY: 1
+# @PURPOSE: DTO for a dashboard linked to a dataset
 class LinkedDashboard(BaseModel):
     id: int
     title: str
@@ -51,6 +62,8 @@ class LinkedDashboard(BaseModel):
 # [/DEF:LinkedDashboard:DataClass]
 
 # [DEF:DatasetColumn:DataClass]
+# @COMPLEXITY: 1
+# @PURPOSE: DTO for a single dataset column's metadata
 class DatasetColumn(BaseModel):
     id: int
     name: str
@@ -61,10 +74,12 @@ class DatasetColumn(BaseModel):
 # [/DEF:DatasetColumn:DataClass]
 
 # [DEF:DatasetDetailResponse:DataClass]
+# @COMPLEXITY: 1
+# @PURPOSE: Detailed DTO for a dataset including columns and links
 class DatasetDetailResponse(BaseModel):
     id: int
     table_name: Optional[str] = None
-    schema: Optional[str] = None
+    schema_name: Optional[str] = Field(None, alias="schema")
     database: str
     description: Optional[str] = None
     columns: List[DatasetColumn]
@@ -75,9 +90,14 @@ class DatasetDetailResponse(BaseModel):
     is_sqllab_view: bool = False
     created_on: Optional[str] = None
     changed_on: Optional[str] = None
+
+    class Config:
+        allow_population_by_field_name = True
 # [/DEF:DatasetDetailResponse:DataClass]
 
 # [DEF:DatasetsResponse:DataClass]
+# @COMPLEXITY: 1
+# @PURPOSE: Paginated response DTO for dataset listings
 class DatasetsResponse(BaseModel):
     datasets: List[DatasetItem]
     total: int
@@ -87,18 +107,21 @@ class DatasetsResponse(BaseModel):
 # [/DEF:DatasetsResponse:DataClass]
 
 # [DEF:TaskResponse:DataClass]
+# @COMPLEXITY: 1
+# @PURPOSE: Response DTO containing a task ID for tracking
 class TaskResponse(BaseModel):
     task_id: str
 # [/DEF:TaskResponse:DataClass]
 
 # [DEF:get_dataset_ids:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Fetch list of all dataset IDs from a specific environment (without pagination)
 # @PRE: env_id must be a valid environment ID
 # @POST: Returns a list of all dataset IDs
 # @PARAM: env_id (str) - The environment ID to fetch datasets from
 # @PARAM: search (Optional[str]) - Filter by table name
 # @RETURN: List[int] - List of dataset IDs
-# @RELATION: CALLS -> ResourceService.get_datasets_with_status
+# @RELATION: CALLS ->[get_datasets_with_status]
 @router.get("/ids")
 async def get_dataset_ids(
     env_id: str,
@@ -143,6 +166,7 @@ async def get_dataset_ids(
 # [/DEF:get_dataset_ids:Function]
 
 # [DEF:get_datasets:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Fetch list of datasets from a specific environment with mapping progress
 # @PRE: env_id must be a valid environment ID
 # @PRE: page must be >= 1 if provided
@@ -154,7 +178,7 @@ async def get_dataset_ids(
 # @PARAM: page (Optional[int]) - Page number (default: 1)
 # @PARAM: page_size (Optional[int]) - Items per page (default: 10, max: 100)
 # @RETURN: DatasetsResponse - List of datasets with status metadata
-# @RELATION: CALLS -> ResourceService.get_datasets_with_status
+# @RELATION: CALLS ->[backend.src.services.resource_service.ResourceService.get_datasets_with_status]
 @router.get("", response_model=DatasetsResponse)
 async def get_datasets(
     env_id: str,
@@ -222,6 +246,8 @@ async def get_datasets(
 # [/DEF:get_datasets:Function]
 
 # [DEF:MapColumnsRequest:DataClass]
+# @COMPLEXITY: 1
+# @PURPOSE: Request DTO for initiating column mapping
 class MapColumnsRequest(BaseModel):
     env_id: str = Field(..., description="Environment ID")
     dataset_ids: List[int] = Field(..., description="List of dataset IDs to map")
@@ -231,6 +257,7 @@ class MapColumnsRequest(BaseModel):
 # [/DEF:MapColumnsRequest:DataClass]
 
 # [DEF:map_columns:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Trigger bulk column mapping for datasets
 # @PRE: User has permission plugin:mapper:execute
 # @PRE: env_id is a valid environment ID
@@ -239,8 +266,8 @@ class MapColumnsRequest(BaseModel):
 # @POST: Task is created and queued for execution
 # @PARAM: request (MapColumnsRequest) - Mapping request with environment and dataset IDs
 # @RETURN: TaskResponse - Task ID for tracking
-# @RELATION: DISPATCHES -> MapperPlugin
-# @RELATION: CALLS -> task_manager.create_task
+# @RELATION: DISPATCHES ->[backend.src.plugins.mapper.MapperPlugin]
+# @RELATION: CALLS ->[backend.src.core.task_manager.manager.TaskManager:create_task]
 @router.post("/map-columns", response_model=TaskResponse)
 async def map_columns(
     request: MapColumnsRequest,
@@ -292,6 +319,8 @@ async def map_columns(
 # [/DEF:map_columns:Function]
 
 # [DEF:GenerateDocsRequest:DataClass]
+# @COMPLEXITY: 1
+# @PURPOSE: Request DTO for initiating documentation generation
 class GenerateDocsRequest(BaseModel):
     env_id: str = Field(..., description="Environment ID")
     dataset_ids: List[int] = Field(..., description="List of dataset IDs to generate docs for")
@@ -300,6 +329,7 @@ class GenerateDocsRequest(BaseModel):
 # [/DEF:GenerateDocsRequest:DataClass]
 
 # [DEF:generate_docs:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Trigger bulk documentation generation for datasets
 # @PRE: User has permission plugin:llm_analysis:execute
 # @PRE: env_id is a valid environment ID
@@ -308,8 +338,8 @@ class GenerateDocsRequest(BaseModel):
 # @POST: Task is created and queued for execution
 # @PARAM: request (GenerateDocsRequest) - Documentation generation request
 # @RETURN: TaskResponse - Task ID for tracking
-# @RELATION: DISPATCHES -> LLMAnalysisPlugin
-# @RELATION: CALLS -> task_manager.create_task
+# @RELATION: DISPATCHES ->[backend.src.plugins.llm_analysis.plugin.DocumentationPlugin]
+# @RELATION: CALLS ->[backend.src.core.task_manager.manager.TaskManager:create_task]
 @router.post("/generate-docs", response_model=TaskResponse)
 async def generate_docs(
     request: GenerateDocsRequest,
@@ -355,6 +385,7 @@ async def generate_docs(
 # [/DEF:generate_docs:Function]
 
 # [DEF:get_dataset_detail:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Get detailed dataset information including columns and linked dashboards
 # @PRE: env_id is a valid environment ID
 # @PRE: dataset_id is a valid dataset ID
@@ -362,7 +393,7 @@ async def generate_docs(
 # @PARAM: env_id (str) - The environment ID
 # @PARAM: dataset_id (int) - The dataset ID
 # @RETURN: DatasetDetailResponse - Detailed dataset information
-# @RELATION: CALLS -> SupersetClient.get_dataset_detail
+# @RELATION: CALLS ->[backend.src.core.superset_client.SupersetClient:get_dataset_detail]
 @router.get("/{dataset_id}", response_model=DatasetDetailResponse)
 async def get_dataset_detail(
     env_id: str,

backend/src/api/routes/environments.py

@@ -1,6 +1,6 @@
 # [DEF:backend.src.api.routes.environments:Module]
 #
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: api, environments, superset, databases
 # @PURPOSE:   API endpoints for listing environments and their databases.
 # @LAYER:     API

backend/src/api/routes/git.py

@@ -1,12 +1,12 @@
 # [DEF:backend.src.api.routes.git:Module]
 #
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: git, routes, api, fastapi, repository, deployment
 # @PURPOSE:   Provides FastAPI endpoints for Git integration operations.
 # @LAYER:     API
-# @RELATION:  USES -> src.services.git_service.GitService
-# @RELATION:  USES -> src.api.routes.git_schemas
-# @RELATION:  USES -> src.models.git
+# @RELATION:  USES -> [backend.src.services.git_service.GitService]
+# @RELATION:  USES -> [backend.src.api.routes.git_schemas]
+# @RELATION:  USES -> [backend.src.models.git]
 #
 # @INVARIANT: All Git operations must be routed through GitService.
 
@@ -48,6 +48,7 @@ MAX_REPOSITORY_STATUS_BATCH = 50
 
 
 # [DEF:_build_no_repo_status_payload:Function]
+# @COMPLEXITY: 1
 # @PURPOSE: Build a consistent status payload for dashboards without initialized repositories.
 # @PRE: None.
 # @POST: Returns a stable payload compatible with frontend repository status parsing.
@@ -72,6 +73,7 @@ def _build_no_repo_status_payload() -> dict:
 
 
 # [DEF:_handle_unexpected_git_route_error:Function]
+# @COMPLEXITY: 1
 # @PURPOSE: Convert unexpected route-level exceptions to stable 500 API responses.
 # @PRE: `error` is a non-HTTPException instance.
 # @POST: Raises HTTPException(500) with route-specific context.
@@ -84,6 +86,7 @@ def _handle_unexpected_git_route_error(route_name: str, error: Exception) -> Non
 
 
 # [DEF:_resolve_repository_status:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Resolve repository status for one dashboard with graceful NO_REPO semantics.
 # @PRE: `dashboard_id` is a valid integer.
 # @POST: Returns standard status payload or `NO_REPO` payload when repository path is absent.
@@ -110,6 +113,7 @@ def _resolve_repository_status(dashboard_id: int) -> dict:
 
 
 # [DEF:_get_git_config_or_404:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Resolve GitServerConfig by id or raise 404.
 # @PRE: db session is available.
 # @POST: Returns GitServerConfig model.
@@ -122,6 +126,7 @@ def _get_git_config_or_404(db: Session, config_id: str) -> GitServerConfig:
 
 
 # [DEF:_find_dashboard_id_by_slug:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Resolve dashboard numeric ID by slug in a specific environment.
 # @PRE: dashboard_slug is non-empty.
 # @POST: Returns dashboard ID or None when not found.
@@ -148,6 +153,7 @@ def _find_dashboard_id_by_slug(
 
 
 # [DEF:_resolve_dashboard_id_from_ref:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Resolve dashboard ID from slug-or-id reference for Git routes.
 # @PRE: dashboard_ref is provided; env_id is required for slug values.
 # @POST: Returns numeric dashboard ID or raises HTTPException.
@@ -182,6 +188,7 @@ def _resolve_dashboard_id_from_ref(
 
 
 # [DEF:_find_dashboard_id_by_slug_async:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Resolve dashboard numeric ID by slug asynchronously for hot-path Git routes.
 # @PRE: dashboard_slug is non-empty.
 # @POST: Returns dashboard ID or None when not found.
@@ -208,6 +215,7 @@ async def _find_dashboard_id_by_slug_async(
 
 
 # [DEF:_resolve_dashboard_id_from_ref_async:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Resolve dashboard ID asynchronously from slug-or-id reference for hot Git routes.
 # @PRE: dashboard_ref is provided; env_id is required for slug values.
 # @POST: Returns numeric dashboard ID or raises HTTPException.
@@ -246,6 +254,7 @@ async def _resolve_dashboard_id_from_ref_async(
 
 
 # [DEF:_resolve_repo_key_from_ref:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Resolve repository folder key with slug-first strategy and deterministic fallback.
 # @PRE: dashboard_id is resolved and valid.
 # @POST: Returns safe key to be used in local repository path.
@@ -278,6 +287,7 @@ def _resolve_repo_key_from_ref(
 
 
 # [DEF:_sanitize_optional_identity_value:Function]
+# @COMPLEXITY: 1
 # @PURPOSE: Normalize optional identity value into trimmed string or None.
 # @PRE: value may be None or blank.
 # @POST: Returns sanitized value suitable for git identity configuration.
@@ -291,6 +301,7 @@ def _sanitize_optional_identity_value(value: Optional[str]) -> Optional[str]:
 
 
 # [DEF:_resolve_current_user_git_identity:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Resolve configured Git username/email from current user's profile preferences.
 # @PRE: `db` may be stubbed in tests; `current_user` may be absent for direct handler invocations.
 # @POST: Returns tuple(username, email) only when both values are configured.
@@ -332,6 +343,7 @@ def _resolve_current_user_git_identity(
 
 
 # [DEF:_apply_git_identity_from_profile:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Apply user-scoped Git identity to repository-local config before write/pull operations.
 # @PRE: dashboard_id is resolved; db/current_user may be missing in direct test invocation context.
 # @POST: git_service.configure_identity is called only when identity and method are available.
@@ -355,6 +367,7 @@ def _apply_git_identity_from_profile(
 
 
 # [DEF:get_git_configs:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: List all configured Git servers.
 # @PRE: Database session `db` is available.
 # @POST: Returns a list of all GitServerConfig objects from the database.
@@ -375,6 +388,7 @@ async def get_git_configs(
 # [/DEF:get_git_configs:Function]
 
 # [DEF:create_git_config:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Register a new Git server configuration.
 # @PRE: `config` contains valid GitServerConfigCreate data.
 # @POST: A new GitServerConfig record is created in the database.
@@ -396,6 +410,7 @@ async def create_git_config(
 # [/DEF:create_git_config:Function]
 
 # [DEF:update_git_config:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Update an existing Git server configuration.
 # @PRE: `config_id` corresponds to an existing configuration.
 # @POST: The configuration record is updated in the database.
@@ -430,6 +445,7 @@ async def update_git_config(
 # [/DEF:update_git_config:Function]
 
 # [DEF:delete_git_config:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Remove a Git server configuration.
 # @PRE: `config_id` corresponds to an existing configuration.
 # @POST: The configuration record is removed from the database.
@@ -451,6 +467,7 @@ async def delete_git_config(
 # [/DEF:delete_git_config:Function]
 
 # [DEF:test_git_config:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Validate connection to a Git server using provided credentials.
 # @PRE: `config` contains provider, url, and pat.
 # @POST: Returns success if the connection is validated via GitService.
@@ -482,6 +499,7 @@ async def test_git_config(
 
 
 # [DEF:list_gitea_repositories:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: List repositories in Gitea for a saved Gitea config.
 # @PRE: config_id exists and provider is GITEA.
 # @POST: Returns repositories visible to PAT user.
@@ -512,6 +530,7 @@ async def list_gitea_repositories(
 
 
 # [DEF:create_gitea_repository:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Create a repository in Gitea for a saved Gitea config.
 # @PRE: config_id exists and provider is GITEA.
 # @POST: Returns created repository payload.
@@ -548,6 +567,7 @@ async def create_gitea_repository(
 
 
 # [DEF:create_remote_repository:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Create repository on remote Git server using selected provider config.
 # @PRE: config_id exists and PAT has creation permissions.
 # @POST: Returns normalized remote repository payload.
@@ -608,6 +628,7 @@ async def create_remote_repository(
 
 
 # [DEF:delete_gitea_repository:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Delete repository in Gitea for a saved Gitea config.
 # @PRE: config_id exists and provider is GITEA.
 # @POST: Target repository is deleted on Gitea.
@@ -633,6 +654,7 @@ async def delete_gitea_repository(
 # [/DEF:delete_gitea_repository:Function]
 
 # [DEF:init_repository:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Link a dashboard to a Git repository and perform initial clone/init.
 # @PRE: `dashboard_ref` exists and `init_data` contains valid config_id and remote_url.
 # @POST: Repository is initialized on disk and a GitRepository record is saved in DB.
@@ -690,6 +712,7 @@ async def init_repository(
 # [/DEF:init_repository:Function]
 
 # [DEF:get_repository_binding:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Return repository binding with provider metadata for selected dashboard.
 # @PRE: `dashboard_ref` resolves to a valid dashboard and repository is initialized.
 # @POST: Returns dashboard repository binding and linked provider.
@@ -724,6 +747,7 @@ async def get_repository_binding(
 # [/DEF:get_repository_binding:Function]
 
 # [DEF:delete_repository:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Delete local repository workspace and DB binding for selected dashboard.
 # @PRE: `dashboard_ref` resolves to a valid dashboard.
 # @POST: Repository files and binding record are removed when present.
@@ -748,6 +772,7 @@ async def delete_repository(
 # [/DEF:delete_repository:Function]
 
 # [DEF:get_branches:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: List all branches for a dashboard's repository.
 # @PRE: Repository for `dashboard_ref` is initialized.
 # @POST: Returns a list of branches from the local repository.
@@ -771,6 +796,7 @@ async def get_branches(
 # [/DEF:get_branches:Function]
 
 # [DEF:create_branch:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Create a new branch in the dashboard's repository.
 # @PRE: `dashboard_ref` repository exists and `branch_data` has name and from_branch.
 # @POST: A new branch is created in the local repository.
@@ -799,6 +825,7 @@ async def create_branch(
 # [/DEF:create_branch:Function]
 
 # [DEF:checkout_branch:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Switch the dashboard's repository to a specific branch.
 # @PRE: `dashboard_ref` repository exists and branch `checkout_data.name` exists.
 # @POST: The local repository HEAD is moved to the specified branch.
@@ -824,6 +851,7 @@ async def checkout_branch(
 # [/DEF:checkout_branch:Function]
 
 # [DEF:commit_changes:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Stage and commit changes in the dashboard's repository.
 # @PRE: `dashboard_ref` repository exists and `commit_data` has message and files.
 # @POST: Specified files are staged and a new commit is created.
@@ -852,6 +880,7 @@ async def commit_changes(
 # [/DEF:commit_changes:Function]
 
 # [DEF:push_changes:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Push local commits to the remote repository.
 # @PRE: `dashboard_ref` repository exists and has a remote configured.
 # @POST: Local commits are pushed to the remote repository.
@@ -875,6 +904,7 @@ async def push_changes(
 # [/DEF:push_changes:Function]
 
 # [DEF:pull_changes:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Pull changes from the remote repository.
 # @PRE: `dashboard_ref` repository exists and has a remote configured.
 # @POST: Remote changes are fetched and merged into the local branch.
@@ -922,6 +952,7 @@ async def pull_changes(
 # [/DEF:pull_changes:Function]
 
 # [DEF:get_merge_status:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Return unfinished-merge status for repository (web-only recovery support).
 # @PRE: `dashboard_ref` resolves to a valid dashboard repository.
 # @POST: Returns merge status payload.
@@ -944,6 +975,7 @@ async def get_merge_status(
 
 
 # [DEF:get_merge_conflicts:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Return conflicted files with mine/theirs previews for web conflict resolver.
 # @PRE: `dashboard_ref` resolves to a valid dashboard repository.
 # @POST: Returns conflict file list.
@@ -966,6 +998,7 @@ async def get_merge_conflicts(
 
 
 # [DEF:resolve_merge_conflicts:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Apply mine/theirs/manual conflict resolutions from WebUI and stage files.
 # @PRE: `dashboard_ref` resolves; request contains at least one resolution item.
 # @POST: Resolved files are staged in index.
@@ -993,6 +1026,7 @@ async def resolve_merge_conflicts(
 
 
 # [DEF:abort_merge:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Abort unfinished merge from WebUI flow.
 # @PRE: `dashboard_ref` resolves to repository.
 # @POST: Merge operation is aborted or reports no active merge.
@@ -1015,6 +1049,7 @@ async def abort_merge(
 
 
 # [DEF:continue_merge:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Finalize unfinished merge from WebUI flow.
 # @PRE: All conflicts are resolved and staged.
 # @POST: Merge commit is created.
@@ -1038,6 +1073,7 @@ async def continue_merge(
 
 
 # [DEF:sync_dashboard:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Sync dashboard state from Superset to Git using the GitPlugin.
 # @PRE: `dashboard_ref` is valid; GitPlugin is available.
 # @POST: Dashboard YAMLs are exported from Superset and committed to Git.
@@ -1069,6 +1105,7 @@ async def sync_dashboard(
 
 
 # [DEF:promote_dashboard:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Promote changes between branches via MR or direct merge.
 # @PRE: dashboard repository is initialized and Git config is valid.
 # @POST: Returns promotion result metadata.
@@ -1171,6 +1208,7 @@ async def promote_dashboard(
 # [/DEF:promote_dashboard:Function]
 
 # [DEF:get_environments:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: List all deployment environments.
 # @PRE: Config manager is accessible.
 # @POST: Returns a list of DeploymentEnvironmentSchema objects.
@@ -1193,6 +1231,7 @@ async def get_environments(
 # [/DEF:get_environments:Function]
 
 # [DEF:deploy_dashboard:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Deploy dashboard from Git to a target environment.
 # @PRE: `dashboard_ref` and `deploy_data.environment_id` are valid.
 # @POST: Dashboard YAMLs are read from Git and imported into the target Superset.
@@ -1223,6 +1262,7 @@ async def deploy_dashboard(
 # [/DEF:deploy_dashboard:Function]
 
 # [DEF:get_history:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: View commit history for a dashboard's repository.
 # @PRE: `dashboard_ref` repository exists.
 # @POST: Returns a list of recent commits from the repository.
@@ -1248,6 +1288,7 @@ async def get_history(
 # [/DEF:get_history:Function]
 
 # [DEF:get_repository_status:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Get current Git status for a dashboard repository.
 # @PRE: `dashboard_ref` resolves to a valid dashboard.
 # @POST: Returns repository status; if repo is not initialized, returns `NO_REPO` payload.
@@ -1272,6 +1313,7 @@ async def get_repository_status(
 
 
 # [DEF:get_repository_status_batch:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Get Git statuses for multiple dashboard repositories in one request.
 # @PRE: `request.dashboard_ids` is provided.
 # @POST: Returns `statuses` map where each key is dashboard ID and value is repository status payload.
@@ -1315,6 +1357,7 @@ async def get_repository_status_batch(
 # [/DEF:get_repository_status_batch:Function]
 
 # [DEF:get_repository_diff:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Get Git diff for a dashboard repository.
 # @PRE: `dashboard_ref` repository exists.
 # @POST: Returns the diff text for the specified file or all changes.
@@ -1343,6 +1386,7 @@ async def get_repository_diff(
 # [/DEF:get_repository_diff:Function]
 
 # [DEF:generate_commit_message:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Generate a suggested commit message using LLM.
 # @PRE: Repository for `dashboard_ref` is initialized.
 # @POST: Returns a suggested commit message string.

backend/src/api/routes/git_schemas.py

@@ -1,6 +1,6 @@
 # [DEF:backend.src.api.routes.git_schemas:Module]
 #
-# @TIER:      STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: git, schemas, pydantic, api, contracts
 # @PURPOSE:   Defines Pydantic models for the Git integration API layer.
 # @LAYER:     API
@@ -14,7 +14,7 @@ from datetime import datetime
 from src.models.git import GitProvider, GitStatus, SyncStatus
 
 # [DEF:GitServerConfigBase:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Base schema for Git server configuration attributes.
 class GitServerConfigBase(BaseModel):
     name: str = Field(..., description="Display name for the Git server")

backend/src/api/routes/health.py

@@ -1,31 +1,62 @@
 # [DEF:health_router:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: health, monitoring, dashboards
 # @PURPOSE: API endpoints for dashboard health monitoring and status aggregation.
 # @LAYER: UI/API
 # @RELATION: DEPENDS_ON -> health_service
 
-from fastapi import APIRouter, Depends, Query
+from fastapi import APIRouter, Depends, Query, HTTPException, status
 from typing import List, Optional
 from sqlalchemy.orm import Session
 from ...core.database import get_db
 from ...services.health_service import HealthService
 from ...schemas.health import HealthSummaryResponse
-from ...dependencies import has_permission
+from ...dependencies import has_permission, get_config_manager, get_task_manager
 
 router = APIRouter(prefix="/api/health", tags=["Health"])
 
+# [DEF:get_health_summary:Function]
+# @PURPOSE: Get aggregated health status for all dashboards.
+# @PRE: Caller has read permission for dashboard health view.
+# @POST: Returns HealthSummaryResponse.
+# @RELATION: CALLS -> backend.src.services.health_service.HealthService
 @router.get("/summary", response_model=HealthSummaryResponse)
 async def get_health_summary(
     environment_id: Optional[str] = Query(None),
     db: Session = Depends(get_db),
+    config_manager = Depends(get_config_manager),
     _ = Depends(has_permission("plugin:migration", "READ"))
 ):
     """
     @PURPOSE: Get aggregated health status for all dashboards.
     @POST: Returns HealthSummaryResponse
     """
-    service = HealthService(db)
+    service = HealthService(db, config_manager=config_manager)
     return await service.get_health_summary(environment_id=environment_id)
+# [/DEF:get_health_summary:Function]
 
-# [/DEF:health_router:Module]
+
+# [DEF:delete_health_report:Function]
+# @PURPOSE: Delete one persisted dashboard validation report from health summary.
+# @PRE: Caller has write permission for tasks/report maintenance.
+# @POST: Validation record is removed; linked task/logs are cleaned when available.
+# @RELATION: CALLS -> backend.src.services.health_service.HealthService
+@router.delete("/summary/{record_id}", status_code=status.HTTP_204_NO_CONTENT)
+async def delete_health_report(
+    record_id: str,
+    db: Session = Depends(get_db),
+    config_manager = Depends(get_config_manager),
+    task_manager = Depends(get_task_manager),
+    _ = Depends(has_permission("tasks", "WRITE")),
+):
+    """
+    @PURPOSE: Delete a persisted dashboard validation report from health summary.
+    @POST: Validation record is removed; linked task/logs are deleted when present.
+    """
+    service = HealthService(db, config_manager=config_manager)
+    if not service.delete_validation_report(record_id, task_manager=task_manager):
+        raise HTTPException(status_code=404, detail="Health report not found")
+    return
+# [/DEF:delete_health_report:Function]
+
+# [/DEF:health_router:Module]

backend/src/api/routes/llm.py

@@ -1,5 +1,5 @@
 # [DEF:backend/src/api/routes/llm.py:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: api, routes, llm
 # @PURPOSE: API routes for LLM provider configuration and management.
 # @LAYER: UI (API)
@@ -205,8 +205,7 @@ async def test_connection(
     )
     
     try:
-        # Simple test call
-        await client.client.models.list()
+        await client.test_runtime_connection()
         return {"success": True, "message": "Connection successful"}
     except Exception as e:
         return {"success": False, "error": str(e)}
@@ -242,8 +241,7 @@ async def test_provider_config(
     )
     
     try:
-        # Simple test call
-        await client.client.models.list()
+        await client.test_runtime_connection()
         return {"success": True, "message": "Connection successful"}
     except Exception as e:
         return {"success": False, "error": str(e)}

backend/src/api/routes/mappings.py

@@ -1,6 +1,6 @@
 # [DEF:backend.src.api.routes.mappings:Module]
 #
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: api, mappings, database, fuzzy-matching
 # @PURPOSE:   API endpoints for managing database mappings and getting suggestions.
 # @LAYER:     API

backend/src/api/routes/migration.py

@@ -1,16 +1,20 @@
 # [DEF:backend.src.api.routes.migration:Module]
-# @TIER: CRITICAL
+# @COMPLEXITY: 5
 # @SEMANTICS: api, migration, dashboards, sync, dry-run
 # @PURPOSE: HTTP contract layer for migration orchestration, settings, dry-run, and mapping sync endpoints.
 # @LAYER: Infra
-# @RELATION: [DEPENDS_ON] ->[backend.src.dependencies]
-# @RELATION: [DEPENDS_ON] ->[backend.src.core.database]
-# @RELATION: [DEPENDS_ON] ->[backend.src.core.superset_client]
-# @RELATION: [DEPENDS_ON] ->[backend.src.core.migration.dry_run_orchestrator]
-# @RELATION: [DEPENDS_ON] ->[backend.src.core.mapping_service]
-# @RELATION: [DEPENDS_ON] ->[backend.src.models.dashboard]
-# @RELATION: [DEPENDS_ON] ->[backend.src.models.mapping]
+# @RELATION: DEPENDS_ON ->[backend.src.dependencies]
+# @RELATION: DEPENDS_ON ->[backend.src.core.database]
+# @RELATION: DEPENDS_ON ->[backend.src.core.superset_client.SupersetClient]
+# @RELATION: DEPENDS_ON ->[backend.src.core.migration.dry_run_orchestrator.MigrationDryRunService]
+# @RELATION: DEPENDS_ON ->[backend.src.core.mapping_service.IdMappingService]
+# @RELATION: DEPENDS_ON ->[backend.src.models.dashboard]
+# @RELATION: DEPENDS_ON ->[backend.src.models.mapping]
 # @INVARIANT: Migration endpoints never execute with invalid environment references and always return explicit HTTP errors on guard failures.
+# @PRE: Backend core services initialized and Database session available.
+# @POST: Migration tasks are enqueued or dry-run results are computed and returned.
+# @SIDE_EFFECT: Enqueues long-running tasks, potentially mutates ResourceMapping table, and performs remote Superset API calls.
+# @DATA_CONTRACT: [DashboardSelection | QueryParams] -> [TaskResponse | DryRunResult | MappingSummary]
 # @TEST_CONTRACT: [DashboardSelection + configured envs] -> [task_id | dry-run result | sync summary]
 # @TEST_SCENARIO: [invalid_environment] -> [HTTP_400_or_404]
 # @TEST_SCENARIO: [valid_execution] -> [success_payload_with_required_fields]
@@ -34,6 +38,7 @@ from ...models.mapping import ResourceMapping
 router = APIRouter(prefix="/api", tags=["migration"])
 
 # [DEF:get_dashboards:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Fetch dashboard metadata from a requested environment for migration selection UI.
 # @PRE: env_id is provided and exists in configured environments.
 # @POST: Returns List[DashboardMetadata] for the resolved environment; emits HTTP_404 when environment is absent.
@@ -61,6 +66,7 @@ async def get_dashboards(
 # [/DEF:get_dashboards:Function]
 
 # [DEF:execute_migration:Function]
+# @COMPLEXITY: 5
 # @PURPOSE: Validate migration selection and enqueue asynchronous migration task execution.
 # @PRE: DashboardSelection payload is valid and both source/target environments exist.
 # @POST: Returns {"task_id": str, "message": str} when task creation succeeds; emits HTTP_400/HTTP_500 on failure.
@@ -102,6 +108,7 @@ async def execute_migration(
 
 
 # [DEF:dry_run_migration:Function]
+# @COMPLEXITY: 5
 # @PURPOSE: Build pre-flight migration diff and risk summary without mutating target systems.
 # @PRE: DashboardSelection is valid, source and target environments exist, differ, and selected_ids is non-empty.
 # @POST: Returns deterministic dry-run payload; emits HTTP_400 for guard violations and HTTP_500 for orchestrator value errors.
@@ -153,6 +160,7 @@ async def dry_run_migration(
 # [/DEF:dry_run_migration:Function]
 
 # [DEF:get_migration_settings:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Read and return configured migration synchronization cron expression.
 # @PRE: Configuration store is available and requester has READ permission.
 # @POST: Returns {"cron": str} reflecting current persisted settings value.
@@ -170,6 +178,7 @@ async def get_migration_settings(
 # [/DEF:get_migration_settings:Function]
 
 # [DEF:update_migration_settings:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Validate and persist migration synchronization cron expression update.
 # @PRE: Payload includes "cron" key and requester has WRITE permission.
 # @POST: Returns {"cron": str, "status": "updated"} and persists updated cron value.
@@ -195,6 +204,7 @@ async def update_migration_settings(
 # [/DEF:update_migration_settings:Function]
 
 # [DEF:get_resource_mappings:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Fetch synchronized resource mappings with optional filters and pagination for migration mappings view.
 # @PRE: skip>=0, 1<=limit<=500, DB session is active, requester has READ permission.
 # @POST: Returns {"items": [...], "total": int} where items reflect applied filters and pagination.
@@ -245,6 +255,7 @@ async def get_resource_mappings(
 # [/DEF:get_resource_mappings:Function]
 
 # [DEF:trigger_sync_now:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Trigger immediate ID synchronization for every configured environment.
 # @PRE: At least one environment is configured and requester has EXECUTE permission.
 # @POST: Returns sync summary with synced/failed counts after attempting all environments.

backend/src/api/routes/plugins.py

@@ -1,32 +1,32 @@
-# [DEF:PluginsRouter:Module]
-# @TIER: STANDARD
-# @SEMANTICS: api, router, plugins, list
-# @PURPOSE: Defines the FastAPI router for plugin-related endpoints, allowing clients to list available plugins.
-# @LAYER: UI (API)
-# @RELATION: Depends on the PluginLoader and PluginConfig. It is included by the main app.
-from typing import List
-from fastapi import APIRouter, Depends
-
-from ...core.plugin_base import PluginConfig
-from ...dependencies import get_plugin_loader, has_permission
-from ...core.logger import belief_scope
-
-router = APIRouter()
-
-# [DEF:list_plugins:Function]
-# @PURPOSE: Retrieve a list of all available plugins.
-# @PRE: plugin_loader is injected via Depends.
-# @POST: Returns a list of PluginConfig objects.
-# @RETURN: List[PluginConfig] - List of registered plugins.
-@router.get("", response_model=List[PluginConfig])
-async def list_plugins(
-    plugin_loader = Depends(get_plugin_loader),
-    _ = Depends(has_permission("plugins", "READ"))
-):
-    with belief_scope("list_plugins"):
-        """
-        Retrieve a list of all available plugins.
-        """
-        return plugin_loader.get_all_plugin_configs()
-# [/DEF:list_plugins:Function]
+# [DEF:PluginsRouter:Module]
+# @COMPLEXITY: 3
+# @SEMANTICS: api, router, plugins, list
+# @PURPOSE: Defines the FastAPI router for plugin-related endpoints, allowing clients to list available plugins.
+# @LAYER: UI (API)
+# @RELATION: Depends on the PluginLoader and PluginConfig. It is included by the main app.
+from typing import List
+from fastapi import APIRouter, Depends
+
+from ...core.plugin_base import PluginConfig
+from ...dependencies import get_plugin_loader, has_permission
+from ...core.logger import belief_scope
+
+router = APIRouter()
+
+# [DEF:list_plugins:Function]
+# @PURPOSE: Retrieve a list of all available plugins.
+# @PRE: plugin_loader is injected via Depends.
+# @POST: Returns a list of PluginConfig objects.
+# @RETURN: List[PluginConfig] - List of registered plugins.
+@router.get("", response_model=List[PluginConfig])
+async def list_plugins(
+    plugin_loader = Depends(get_plugin_loader),
+    _ = Depends(has_permission("plugins", "READ"))
+):
+    with belief_scope("list_plugins"):
+        """
+        Retrieve a list of all available plugins.
+        """
+        return plugin_loader.get_all_plugin_configs()
+# [/DEF:list_plugins:Function]
 # [/DEF:PluginsRouter:Module]

backend/src/api/routes/profile.py

@@ -1,6 +1,6 @@
 # [DEF:backend.src.api.routes.profile:Module]
 #
-# @TIER:      CRITICAL
+# @COMPLEXITY: 5
 # @SEMANTICS: api, profile, preferences, self-service, account-lookup
 # @PURPOSE:   Exposes self-scoped profile preference endpoints and environment-based Superset account lookup.
 # @LAYER:     API

backend/src/api/routes/reports.py

@@ -1,11 +1,15 @@
 # [DEF:ReportsRouter:Module]
-# @TIER: CRITICAL
+# @COMPLEXITY: 5
 # @SEMANTICS: api, reports, list, detail, pagination, filters
 # @PURPOSE: FastAPI router for unified task report list and detail retrieval endpoints.
 # @LAYER: UI (API)
-# @RELATION: DEPENDS_ON -> backend.src.services.reports.report_service.ReportsService
-# @RELATION: DEPENDS_ON -> backend.src.dependencies
+# @RELATION: DEPENDS_ON -> [backend.src.services.reports.report_service.ReportsService]
+# @RELATION: DEPENDS_ON -> [backend.src.dependencies]
 # @INVARIANT: Endpoints are read-only and do not trigger long-running tasks.
+# @PRE: Reports service and dependencies are initialized.
+# @POST: Router is configured and endpoints are ready for registration.
+# @SIDE_EFFECT: None
+# @DATA_CONTRACT: [ReportQuery] -> [ReportCollection | ReportDetailView]
 
 # [SECTION: IMPORTS]
 from datetime import datetime
@@ -25,6 +29,7 @@ router = APIRouter(prefix="/api/reports", tags=["Reports"])
 
 
 # [DEF:_parse_csv_enum_list:Function]
+# @COMPLEXITY: 1
 # @PURPOSE: Parse comma-separated query value into enum list.
 # @PRE: raw may be None/empty or comma-separated values.
 # @POST: Returns enum list or raises HTTP 400 with deterministic machine-readable payload.
@@ -59,6 +64,7 @@ def _parse_csv_enum_list(raw: Optional[str], enum_cls, field_name: str) -> List:
 
 
 # [DEF:list_reports:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Return paginated unified reports list.
 # @PRE: authenticated/authorized request and validated query params.
 # @POST: returns {items,total,page,page_size,has_next,applied_filters}.
@@ -125,6 +131,7 @@ async def list_reports(
 
 
 # [DEF:get_report_detail:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Return one normalized report detail with diagnostics and next actions.
 # @PRE: authenticated/authorized request and existing report_id.
 # @POST: returns normalized detail envelope or 404 when report is not found.

backend/src/api/routes/storage.py

@@ -1,10 +1,10 @@
 # [DEF:storage_routes:Module]
 #
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: storage, files, upload, download, backup, repository
 # @PURPOSE:   API endpoints for file storage management (backups and repositories).
 # @LAYER:     API
-# @RELATION:  DEPENDS_ON -> backend.src.models.storage
+# @RELATION:  DEPENDS_ON -> [backend.src.models.storage]
 #
 # @INVARIANT: All paths must be validated against path traversal.
 
@@ -22,6 +22,7 @@ from ...core.logger import belief_scope
 router = APIRouter(tags=["storage"])
 
 # [DEF:list_files:Function]
+# @COMPLEXITY: 3
 # @PURPOSE:     List all files and directories in the storage system.
 #
 # @PRE:         None.
@@ -31,7 +32,7 @@ router = APIRouter(tags=["storage"])
 # @PARAM:       path (Optional[str]) - Subpath within the category.
 # @RETURN:      List[StoredFile] - List of files/directories.
 #
-# @RELATION:    CALLS -> StoragePlugin.list_files
+# @RELATION:    CALLS -> [backend.src.plugins.storage.plugin.StoragePlugin.list_files]
 @router.get("/files", response_model=List[StoredFile])
 async def list_files(
     category: Optional[FileCategory] = None,
@@ -48,6 +49,7 @@ async def list_files(
 # [/DEF:list_files:Function]
 
 # [DEF:upload_file:Function]
+# @COMPLEXITY: 3
 # @PURPOSE:     Upload a file to the storage system.
 #
 # @PRE:         category must be a valid FileCategory.
@@ -61,7 +63,7 @@ async def list_files(
 #
 # @SIDE_EFFECT: Writes file to the filesystem.
 #
-# @RELATION:    CALLS -> StoragePlugin.save_file
+# @RELATION:    CALLS -> [backend.src.plugins.storage.plugin.StoragePlugin.save_file]
 @router.post("/upload", response_model=StoredFile, status_code=201)
 async def upload_file(
     category: FileCategory = Form(...),
@@ -81,6 +83,7 @@ async def upload_file(
 # [/DEF:upload_file:Function]
 
 # [DEF:delete_file:Function]
+# @COMPLEXITY: 3
 # @PURPOSE:     Delete a specific file or directory.
 #
 # @PRE:         category must be a valid FileCategory.
@@ -92,7 +95,7 @@ async def upload_file(
 #
 # @SIDE_EFFECT: Deletes item from the filesystem.
 #
-# @RELATION:    CALLS -> StoragePlugin.delete_file
+# @RELATION:    CALLS -> [backend.src.plugins.storage.plugin.StoragePlugin.delete_file]
 @router.delete("/files/{category}/{path:path}", status_code=204)
 async def delete_file(
     category: FileCategory,
@@ -113,6 +116,7 @@ async def delete_file(
 # [/DEF:delete_file:Function]
 
 # [DEF:download_file:Function]
+# @COMPLEXITY: 3
 # @PURPOSE:     Retrieve a file for download.
 #
 # @PRE:         category must be a valid FileCategory.
@@ -122,7 +126,7 @@ async def delete_file(
 # @PARAM:       path (str) - Relative path of the file.
 # @RETURN:      FileResponse - The file content.
 #
-# @RELATION:    CALLS -> StoragePlugin.get_file_path
+# @RELATION:    CALLS -> [backend.src.plugins.storage.plugin.StoragePlugin.get_file_path]
 @router.get("/download/{category}/{path:path}")
 async def download_file(
     category: FileCategory,
@@ -145,6 +149,7 @@ async def download_file(
 # [/DEF:download_file:Function]
 
 # [DEF:get_file_by_path:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Retrieve a file by validated absolute/relative path under storage root.
 #
 # @PRE: path must resolve under configured storage root.
@@ -153,8 +158,8 @@ async def download_file(
 # @PARAM: path (str) - Absolute or storage-root-relative file path.
 # @RETURN: FileResponse - The file content.
 #
-# @RELATION:    CALLS -> StoragePlugin.get_storage_root
-# @RELATION:    CALLS -> StoragePlugin.validate_path
+# @RELATION:    CALLS -> [backend.src.plugins.storage.plugin.StoragePlugin.get_storage_root]
+# @RELATION:    CALLS -> [backend.src.plugins.storage.plugin.StoragePlugin.validate_path]
 @router.get("/file")
 async def get_file_by_path(
     path: str,

backend/src/api/routes/tasks.py

@@ -1,348 +1,324 @@
-# [DEF:TasksRouter:Module]
-# @TIER: STANDARD
-# @SEMANTICS: api, router, tasks, create, list, get, logs
-# @PURPOSE: Defines the FastAPI router for task-related endpoints, allowing clients to create, list, and get the status of tasks.
-# @LAYER: UI (API)
-# @RELATION: Depends on the TaskManager. It is included by the main app.
-from typing import List, Dict, Any, Optional
-from fastapi import APIRouter, Depends, HTTPException, status, Query
-from pydantic import BaseModel
-from ...core.logger import belief_scope
-
-from ...core.task_manager import TaskManager, Task, TaskStatus, LogEntry
-from ...core.task_manager.models import LogFilter, LogStats
-from ...dependencies import get_task_manager, has_permission, get_current_user, get_config_manager
-from ...core.config_manager import ConfigManager
-from ...services.llm_prompt_templates import (
-    is_multimodal_model,
-    normalize_llm_settings,
-    resolve_bound_provider_id,
-)
-
-router = APIRouter()
-
-TASK_TYPE_PLUGIN_MAP = {
-    "llm_validation": ["llm_dashboard_validation"],
-    "backup": ["superset-backup"],
-    "migration": ["superset-migration"],
-}
-
-class CreateTaskRequest(BaseModel):
-    plugin_id: str
-    params: Dict[str, Any]
-
-class ResolveTaskRequest(BaseModel):
-    resolution_params: Dict[str, Any]
-
-class ResumeTaskRequest(BaseModel):
-    passwords: Dict[str, str]
-
-@router.post("", response_model=Task, status_code=status.HTTP_201_CREATED)
-# [DEF:create_task:Function]
-# @PURPOSE: Create and start a new task for a given plugin.
-# @PARAM: request (CreateTaskRequest) - The request body containing plugin_id and params.
-# @PARAM: task_manager (TaskManager) - The task manager instance.
-# @PRE: plugin_id must exist and params must be valid for that plugin.
-# @POST: A new task is created and started.
-# @RETURN: Task - The created task instance.
-async def create_task(
-    request: CreateTaskRequest,
-    task_manager: TaskManager = Depends(get_task_manager),
-    current_user = Depends(get_current_user),
-    config_manager: ConfigManager = Depends(get_config_manager),
-):
-    # Dynamic permission check based on plugin_id
-    has_permission(f"plugin:{request.plugin_id}", "EXECUTE")(current_user)
-    """
-    Create and start a new task for a given plugin.
-    """
-    with belief_scope("create_task"):
-        try:
-            # Special handling for LLM tasks to resolve provider config by task binding.
-            if request.plugin_id in {"llm_dashboard_validation", "llm_documentation"}:
-                from ...core.database import SessionLocal
-                from ...services.llm_provider import LLMProviderService
-                db = SessionLocal()
-                try:
-                    llm_service = LLMProviderService(db)
-                    provider_id = request.params.get("provider_id")
-                    if not provider_id:
-                        llm_settings = normalize_llm_settings(config_manager.get_config().settings.llm)
-                        binding_key = "dashboard_validation" if request.plugin_id == "llm_dashboard_validation" else "documentation"
-                        provider_id = resolve_bound_provider_id(llm_settings, binding_key)
-                        if provider_id:
-                            request.params["provider_id"] = provider_id
-                    if not provider_id:
-                        providers = llm_service.get_all_providers()
-                        active_provider = next((p for p in providers if p.is_active), None)
-                        if active_provider:
-                            provider_id = active_provider.id
-                            request.params["provider_id"] = provider_id
-
-                    if provider_id:
-                        db_provider = llm_service.get_provider(provider_id)
-                        if not db_provider:
-                            raise ValueError(f"LLM Provider {provider_id} not found")
-                        if request.plugin_id == "llm_dashboard_validation" and not is_multimodal_model(
-                            db_provider.default_model,
-                            db_provider.provider_type,
-                        ):
-                            raise HTTPException(
-                                status_code=status.HTTP_422_UNPROCESSABLE_ENTITY,
-                                detail="Selected provider model is not multimodal for dashboard validation",
-                            )
-                finally:
-                    db.close()
-
-            task = await task_manager.create_task(
-                plugin_id=request.plugin_id,
-                params=request.params
-            )
-            return task
-        except ValueError as e:
-            raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail=str(e))
-# [/DEF:create_task:Function]
-
-@router.get("", response_model=List[Task])
-# [DEF:list_tasks:Function]
-# @PURPOSE: Retrieve a list of tasks with pagination and optional status filter.
-# @PARAM: limit (int) - Maximum number of tasks to return.
-# @PARAM: offset (int) - Number of tasks to skip.
-# @PARAM: status (Optional[TaskStatus]) - Filter by task status.
-# @PARAM: task_manager (TaskManager) - The task manager instance.
-# @PRE: task_manager must be available.
-# @POST: Returns a list of tasks.
-# @RETURN: List[Task] - List of tasks.
-async def list_tasks(
-    limit: int = 10,
-    offset: int = 0,
-    status_filter: Optional[TaskStatus] = Query(None, alias="status"),
-    task_type: Optional[str] = Query(None, description="Task category: llm_validation, backup, migration"),
-    plugin_id: Optional[List[str]] = Query(None, description="Filter by plugin_id (repeatable query param)"),
-    completed_only: bool = Query(False, description="Return only completed tasks (SUCCESS/FAILED)"),
-    task_manager: TaskManager = Depends(get_task_manager),
-    _ = Depends(has_permission("tasks", "READ"))
-):
-    """
-    Retrieve a list of tasks with pagination and optional status filter.
-    """
-    with belief_scope("list_tasks"):
-        plugin_filters = list(plugin_id) if plugin_id else []
-        if task_type:
-            if task_type not in TASK_TYPE_PLUGIN_MAP:
-                raise HTTPException(
-                    status_code=status.HTTP_400_BAD_REQUEST,
-                    detail=f"Unsupported task_type '{task_type}'. Allowed: {', '.join(TASK_TYPE_PLUGIN_MAP.keys())}"
-                )
-            plugin_filters.extend(TASK_TYPE_PLUGIN_MAP[task_type])
-
-        return task_manager.get_tasks(
-            limit=limit,
-            offset=offset,
-            status=status_filter,
-            plugin_ids=plugin_filters or None,
-            completed_only=completed_only
-        )
-# [/DEF:list_tasks:Function]
-
-@router.get("/{task_id}", response_model=Task)
-# [DEF:get_task:Function]
-# @PURPOSE: Retrieve the details of a specific task.
-# @PARAM: task_id (str) - The unique identifier of the task.
-# @PARAM: task_manager (TaskManager) - The task manager instance.
-# @PRE: task_id must exist.
-# @POST: Returns task details or raises 404.
-# @RETURN: Task - The task details.
-async def get_task(
-    task_id: str,
-    task_manager: TaskManager = Depends(get_task_manager),
-    _ = Depends(has_permission("tasks", "READ"))
-):
-    """
-    Retrieve the details of a specific task.
-    """
-    with belief_scope("get_task"):
-        task = task_manager.get_task(task_id)
-        if not task:
-            raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Task not found")
-        return task
-# [/DEF:get_task:Function]
-
-@router.get("/{task_id}/logs", response_model=List[LogEntry])
-# [DEF:get_task_logs:Function]
-# @PURPOSE: Retrieve logs for a specific task with optional filtering.
-# @PARAM: task_id (str) - The unique identifier of the task.
-# @PARAM: level (Optional[str]) - Filter by log level (DEBUG, INFO, WARNING, ERROR).
-# @PARAM: source (Optional[str]) - Filter by source component.
-# @PARAM: search (Optional[str]) - Text search in message.
-# @PARAM: offset (int) - Number of logs to skip.
-# @PARAM: limit (int) - Maximum number of logs to return.
-# @PARAM: task_manager (TaskManager) - The task manager instance.
-# @PRE: task_id must exist.
-# @POST: Returns a list of log entries or raises 404.
-# @RETURN: List[LogEntry] - List of log entries.
-# @TIER: CRITICAL
-# @TEST_CONTRACT get_task_logs_api ->
-# {
-#   required_params: {task_id: str},
-#   optional_params: {level: str, source: str, search: str},
-#   invariants: ["returns 404 for non-existent task", "applies filters correctly"]
-# }
-# @TEST_FIXTURE valid_task_logs_request -> {"task_id": "test_1", "level": "INFO"}
-# @TEST_EDGE task_not_found -> raises 404
-# @TEST_EDGE invalid_limit -> Query(limit=0) returns 422
-# @TEST_INVARIANT response_purity -> verifies: [valid_task_logs_request]
-# @TEST_CONTRACT: TaskLogQueryInput -> List[LogEntry]
-# @TEST_SCENARIO: existing_task_logs_filtered -> Returns filtered logs by level/source/search with pagination.
-# @TEST_FIXTURE: valid_task_with_mixed_logs -> backend/tests/fixtures/task_logs/valid_task_with_mixed_logs.json
-# @TEST_EDGE: missing_task -> Unknown task_id returns 404 Task not found.
-# @TEST_EDGE: invalid_level_type -> Non-string/invalid level query rejected by validation or yields empty result.
-# @TEST_EDGE: pagination_bounds -> offset=0 and limit=1000 remain within API bounds and do not overflow.
-# @TEST_INVARIANT: logs_only_for_existing_task -> VERIFIED_BY: [existing_task_logs_filtered, missing_task]
-async def get_task_logs(
-    task_id: str,
-    level: Optional[str] = Query(None, description="Filter by log level (DEBUG, INFO, WARNING, ERROR)"),
-    source: Optional[str] = Query(None, description="Filter by source component"),
-    search: Optional[str] = Query(None, description="Text search in message"),
-    offset: int = Query(0, ge=0, description="Number of logs to skip"),
-    limit: int = Query(100, ge=1, le=1000, description="Maximum number of logs to return"),
-    task_manager: TaskManager = Depends(get_task_manager),
-    _ = Depends(has_permission("tasks", "READ"))
-):
-    """
-    Retrieve logs for a specific task with optional filtering.
-    Supports filtering by level, source, and text search.
-    """
-    with belief_scope("get_task_logs"):
-        task = task_manager.get_task(task_id)
-        if not task:
-            raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Task not found")
-        
-        log_filter = LogFilter(
-            level=level.upper() if level else None,
-            source=source,
-            search=search,
-            offset=offset,
-            limit=limit
-        )
-        return task_manager.get_task_logs(task_id, log_filter)
-# [/DEF:get_task_logs:Function]
-
-@router.get("/{task_id}/logs/stats", response_model=LogStats)
-# [DEF:get_task_log_stats:Function]
-# @PURPOSE: Get statistics about logs for a task (counts by level and source).
-# @PARAM: task_id (str) - The unique identifier of the task.
-# @PARAM: task_manager (TaskManager) - The task manager instance.
-# @PRE: task_id must exist.
-# @POST: Returns log statistics or raises 404.
-# @RETURN: LogStats - Statistics about task logs.
-async def get_task_log_stats(
-    task_id: str,
-    task_manager: TaskManager = Depends(get_task_manager),
-    _ = Depends(has_permission("tasks", "READ"))
-):
-    """
-    Get statistics about logs for a task (counts by level and source).
-    """
-    with belief_scope("get_task_log_stats"):
-        task = task_manager.get_task(task_id)
-        if not task:
-            raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Task not found")
-        return task_manager.get_task_log_stats(task_id)
-# [/DEF:get_task_log_stats:Function]
-
-@router.get("/{task_id}/logs/sources", response_model=List[str])
-# [DEF:get_task_log_sources:Function]
-# @PURPOSE: Get unique sources for a task's logs.
-# @PARAM: task_id (str) - The unique identifier of the task.
-# @PARAM: task_manager (TaskManager) - The task manager instance.
-# @PRE: task_id must exist.
-# @POST: Returns list of unique source names or raises 404.
-# @RETURN: List[str] - Unique source names.
-async def get_task_log_sources(
-    task_id: str,
-    task_manager: TaskManager = Depends(get_task_manager),
-    _ = Depends(has_permission("tasks", "READ"))
-):
-    """
-    Get unique sources for a task's logs.
-    """
-    with belief_scope("get_task_log_sources"):
-        task = task_manager.get_task(task_id)
-        if not task:
-            raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Task not found")
-        return task_manager.get_task_log_sources(task_id)
-# [/DEF:get_task_log_sources:Function]
-
-@router.post("/{task_id}/resolve", response_model=Task)
-# [DEF:resolve_task:Function]
-# @PURPOSE: Resolve a task that is awaiting mapping.
-# @PARAM: task_id (str) - The unique identifier of the task.
-# @PARAM: request (ResolveTaskRequest) - The resolution parameters.
-# @PARAM: task_manager (TaskManager) - The task manager instance.
-# @PRE: task must be in AWAITING_MAPPING status.
-# @POST: Task is resolved and resumes execution.
-# @RETURN: Task - The updated task object.
-async def resolve_task(
-    task_id: str,
-    request: ResolveTaskRequest,
-    task_manager: TaskManager = Depends(get_task_manager),
-    _ = Depends(has_permission("tasks", "WRITE"))
-):
-    """
-    Resolve a task that is awaiting mapping.
-    """
-    with belief_scope("resolve_task"):
-        try:
-            await task_manager.resolve_task(task_id, request.resolution_params)
-            return task_manager.get_task(task_id)
-        except ValueError as e:
-            raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=str(e))
-# [/DEF:resolve_task:Function]
-
-@router.post("/{task_id}/resume", response_model=Task)
-# [DEF:resume_task:Function]
-# @PURPOSE: Resume a task that is awaiting input (e.g., passwords).
-# @PARAM: task_id (str) - The unique identifier of the task.
-# @PARAM: request (ResumeTaskRequest) - The input (passwords).
-# @PARAM: task_manager (TaskManager) - The task manager instance.
-# @PRE: task must be in AWAITING_INPUT status.
-# @POST: Task resumes execution with provided input.
-# @RETURN: Task - The updated task object.
-async def resume_task(
-    task_id: str,
-    request: ResumeTaskRequest,
-    task_manager: TaskManager = Depends(get_task_manager),
-    _ = Depends(has_permission("tasks", "WRITE"))
-):
-    """
-    Resume a task that is awaiting input (e.g., passwords).
-    """
-    with belief_scope("resume_task"):
-        try:
-            task_manager.resume_task_with_password(task_id, request.passwords)
-            return task_manager.get_task(task_id)
-        except ValueError as e:
-            raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=str(e))
-# [/DEF:resume_task:Function]
-
-@router.delete("", status_code=status.HTTP_204_NO_CONTENT)
-# [DEF:clear_tasks:Function]
-# @PURPOSE: Clear tasks matching the status filter.
-# @PARAM: status (Optional[TaskStatus]) - Filter by task status.
-# @PARAM: task_manager (TaskManager) - The task manager instance.
-# @PRE: task_manager is available.
-# @POST: Tasks are removed from memory/persistence.
-async def clear_tasks(
-    status: Optional[TaskStatus] = None,
-    task_manager: TaskManager = Depends(get_task_manager),
-    _ = Depends(has_permission("tasks", "WRITE"))
-):
-    """
-    Clear tasks matching the status filter. If no filter, clears all non-running tasks.
-    """
-    with belief_scope("clear_tasks", f"status={status}"):
-        task_manager.clear_tasks(status)
-        return
-# [/DEF:clear_tasks:Function]
-# [/DEF:TasksRouter:Module]
+# [DEF:TasksRouter:Module]
+# @COMPLEXITY: 4
+# @SEMANTICS: api, router, tasks, create, list, get, logs
+# @PURPOSE: Defines the FastAPI router for task-related endpoints, allowing clients to create, list, and get the status of tasks.
+# @LAYER: UI (API)
+# @RELATION: DEPENDS_ON -> [backend.src.core.task_manager.manager.TaskManager]
+# @RELATION: DEPENDS_ON -> [backend.src.core.config_manager.ConfigManager]
+# @RELATION: DEPENDS_ON -> [backend.src.services.llm_provider.LLMProviderService]
+
+# [SECTION: IMPORTS]
+from typing import List, Dict, Any, Optional
+from fastapi import APIRouter, Depends, HTTPException, status, Query
+from pydantic import BaseModel
+from ...core.logger import belief_scope
+
+from ...core.task_manager import TaskManager, Task, TaskStatus, LogEntry
+from ...core.task_manager.models import LogFilter, LogStats
+from ...dependencies import get_task_manager, has_permission, get_current_user, get_config_manager
+from ...core.config_manager import ConfigManager
+from ...services.llm_prompt_templates import (
+    is_multimodal_model,
+    normalize_llm_settings,
+    resolve_bound_provider_id,
+)
+# [/SECTION]
+
+router = APIRouter()
+
+TASK_TYPE_PLUGIN_MAP = {
+    "llm_validation": ["llm_dashboard_validation"],
+    "backup": ["superset-backup"],
+    "migration": ["superset-migration"],
+}
+
+class CreateTaskRequest(BaseModel):
+    plugin_id: str
+    params: Dict[str, Any]
+
+class ResolveTaskRequest(BaseModel):
+    resolution_params: Dict[str, Any]
+
+class ResumeTaskRequest(BaseModel):
+    passwords: Dict[str, str]
+
+# [DEF:create_task:Function]
+# @COMPLEXITY: 3
+# @PURPOSE: Create and start a new task for a given plugin.
+# @PARAM: request (CreateTaskRequest) - The request body containing plugin_id and params.
+# @PARAM: task_manager (TaskManager) - The task manager instance.
+# @PRE: plugin_id must exist and params must be valid for that plugin.
+# @POST: A new task is created and started.
+# @RETURN: Task - The created task instance.
+@router.post("", response_model=Task, status_code=status.HTTP_201_CREATED)
+async def create_task(
+    request: CreateTaskRequest,
+    task_manager: TaskManager = Depends(get_task_manager),
+    current_user = Depends(get_current_user),
+    config_manager: ConfigManager = Depends(get_config_manager),
+):
+    # Dynamic permission check based on plugin_id
+    has_permission(f"plugin:{request.plugin_id}", "EXECUTE")(current_user)
+    with belief_scope("create_task"):
+        try:
+            # Special handling for LLM tasks to resolve provider config by task binding.
+            if request.plugin_id in {"llm_dashboard_validation", "llm_documentation"}:
+                from ...core.database import SessionLocal
+                from ...services.llm_provider import LLMProviderService
+                db = SessionLocal()
+                try:
+                    llm_service = LLMProviderService(db)
+                    provider_id = request.params.get("provider_id")
+                    if not provider_id:
+                        llm_settings = normalize_llm_settings(config_manager.get_config().settings.llm)
+                        binding_key = "dashboard_validation" if request.plugin_id == "llm_dashboard_validation" else "documentation"
+                        provider_id = resolve_bound_provider_id(llm_settings, binding_key)
+                        if provider_id:
+                            request.params["provider_id"] = provider_id
+                    if not provider_id:
+                        providers = llm_service.get_all_providers()
+                        active_provider = next((p for p in providers if p.is_active), None)
+                        if active_provider:
+                            provider_id = active_provider.id
+                            request.params["provider_id"] = provider_id
+
+                    if provider_id:
+                        db_provider = llm_service.get_provider(provider_id)
+                        if not db_provider:
+                            raise ValueError(f"LLM Provider {provider_id} not found")
+                        if request.plugin_id == "llm_dashboard_validation" and not is_multimodal_model(
+                            db_provider.default_model,
+                            db_provider.provider_type,
+                        ):
+                            raise HTTPException(
+                                status_code=status.HTTP_422_UNPROCESSABLE_ENTITY,
+                                detail="Selected provider model is not multimodal for dashboard validation",
+                            )
+                finally:
+                    db.close()
+
+            task = await task_manager.create_task(
+                plugin_id=request.plugin_id,
+                params=request.params
+            )
+            return task
+        except ValueError as e:
+            raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail=str(e))
+# [/DEF:create_task:Function]
+
+# [DEF:list_tasks:Function]
+# @COMPLEXITY: 3
+# @PURPOSE: Retrieve a list of tasks with pagination and optional status filter.
+# @PARAM: limit (int) - Maximum number of tasks to return.
+# @PARAM: offset (int) - Number of tasks to skip.
+# @PARAM: status (Optional[TaskStatus]) - Filter by task status.
+# @PARAM: task_manager (TaskManager) - The task manager instance.
+# @PRE: task_manager must be available.
+# @POST: Returns a list of tasks.
+# @RETURN: List[Task] - List of tasks.
+@router.get("", response_model=List[Task])
+async def list_tasks(
+    limit: int = 10,
+    offset: int = 0,
+    status_filter: Optional[TaskStatus] = Query(None, alias="status"),
+    task_type: Optional[str] = Query(None, description="Task category: llm_validation, backup, migration"),
+    plugin_id: Optional[List[str]] = Query(None, description="Filter by plugin_id (repeatable query param)"),
+    completed_only: bool = Query(False, description="Return only completed tasks (SUCCESS/FAILED)"),
+    task_manager: TaskManager = Depends(get_task_manager),
+    _ = Depends(has_permission("tasks", "READ"))
+):
+    with belief_scope("list_tasks"):
+        plugin_filters = list(plugin_id) if plugin_id else []
+        if task_type:
+            if task_type not in TASK_TYPE_PLUGIN_MAP:
+                raise HTTPException(
+                    status_code=status.HTTP_400_BAD_REQUEST,
+                    detail=f"Unsupported task_type '{task_type}'. Allowed: {', '.join(TASK_TYPE_PLUGIN_MAP.keys())}"
+                )
+            plugin_filters.extend(TASK_TYPE_PLUGIN_MAP[task_type])
+
+        return task_manager.get_tasks(
+            limit=limit,
+            offset=offset,
+            status=status_filter,
+            plugin_ids=plugin_filters or None,
+            completed_only=completed_only
+        )
+# [/DEF:list_tasks:Function]
+
+# [DEF:get_task:Function]
+# @COMPLEXITY: 3
+# @PURPOSE: Retrieve the details of a specific task.
+# @PARAM: task_id (str) - The unique identifier of the task.
+# @PARAM: task_manager (TaskManager) - The task manager instance.
+# @PRE: task_id must exist.
+# @POST: Returns task details or raises 404.
+# @RETURN: Task - The task details.
+@router.get("/{task_id}", response_model=Task)
+async def get_task(
+    task_id: str,
+    task_manager: TaskManager = Depends(get_task_manager),
+    _ = Depends(has_permission("tasks", "READ"))
+):
+    with belief_scope("get_task"):
+        task = task_manager.get_task(task_id)
+        if not task:
+            raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Task not found")
+        return task
+# [/DEF:get_task:Function]
+
+# [DEF:get_task_logs:Function]
+# @COMPLEXITY: 5
+# @PURPOSE: Retrieve logs for a specific task with optional filtering.
+# @PARAM: task_id (str) - The unique identifier of the task.
+# @PARAM: level (Optional[str]) - Filter by log level (DEBUG, INFO, WARNING, ERROR).
+# @PARAM: source (Optional[str]) - Filter by source component.
+# @PARAM: search (Optional[str]) - Text search in message.
+# @PARAM: offset (int) - Number of logs to skip.
+# @PARAM: limit (int) - Maximum number of logs to return.
+# @PARAM: task_manager (TaskManager) - The task manager instance.
+# @PRE: task_id must exist.
+# @POST: Returns a list of log entries or raises 404.
+# @RETURN: List[LogEntry] - List of log entries.
+# @TEST_CONTRACT: TaskLogQueryInput -> List[LogEntry]
+# @TEST_SCENARIO: existing_task_logs_filtered -> Returns filtered logs by level/source/search with pagination.
+# @TEST_FIXTURE: valid_task_with_mixed_logs -> backend/tests/fixtures/task_logs/valid_task_with_mixed_logs.json
+# @TEST_EDGE: missing_task -> Unknown task_id returns 404 Task not found.
+# @TEST_EDGE: invalid_level_type -> Non-string/invalid level query rejected by validation or yields empty result.
+# @TEST_EDGE: pagination_bounds -> offset=0 and limit=1000 remain within API bounds and do not overflow.
+# @TEST_INVARIANT: logs_only_for_existing_task -> VERIFIED_BY: [existing_task_logs_filtered, missing_task]
+@router.get("/{task_id}/logs", response_model=List[LogEntry])
+async def get_task_logs(
+    task_id: str,
+    level: Optional[str] = Query(None, description="Filter by log level (DEBUG, INFO, WARNING, ERROR)"),
+    source: Optional[str] = Query(None, description="Filter by source component"),
+    search: Optional[str] = Query(None, description="Text search in message"),
+    offset: int = Query(0, ge=0, description="Number of logs to skip"),
+    limit: int = Query(100, ge=1, le=1000, description="Maximum number of logs to return"),
+    task_manager: TaskManager = Depends(get_task_manager),
+    _ = Depends(has_permission("tasks", "READ"))
+):
+    with belief_scope("get_task_logs"):
+        task = task_manager.get_task(task_id)
+        if not task:
+            raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Task not found")
+        
+        log_filter = LogFilter(
+            level=level.upper() if level else None,
+            source=source,
+            search=search,
+            offset=offset,
+            limit=limit
+        )
+        return task_manager.get_task_logs(task_id, log_filter)
+# [/DEF:get_task_logs:Function]
+
+# [DEF:get_task_log_stats:Function]
+# @COMPLEXITY: 3
+# @PURPOSE: Get statistics about logs for a task (counts by level and source).
+# @PARAM: task_id (str) - The unique identifier of the task.
+# @PARAM: task_manager (TaskManager) - The task manager instance.
+# @PRE: task_id must exist.
+# @POST: Returns log statistics or raises 404.
+# @RETURN: LogStats - Statistics about task logs.
+@router.get("/{task_id}/logs/stats", response_model=LogStats)
+async def get_task_log_stats(
+    task_id: str,
+    task_manager: TaskManager = Depends(get_task_manager),
+    _ = Depends(has_permission("tasks", "READ"))
+):
+    with belief_scope("get_task_log_stats"):
+        task = task_manager.get_task(task_id)
+        if not task:
+            raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Task not found")
+        return task_manager.get_task_log_stats(task_id)
+# [/DEF:get_task_log_stats:Function]
+
+# [DEF:get_task_log_sources:Function]
+# @COMPLEXITY: 3
+# @PURPOSE: Get unique sources for a task's logs.
+# @PARAM: task_id (str) - The unique identifier of the task.
+# @PARAM: task_manager (TaskManager) - The task manager instance.
+# @PRE: task_id must exist.
+# @POST: Returns list of unique source names or raises 404.
+# @RETURN: List[str] - Unique source names.
+@router.get("/{task_id}/logs/sources", response_model=List[str])
+async def get_task_log_sources(
+    task_id: str,
+    task_manager: TaskManager = Depends(get_task_manager),
+    _ = Depends(has_permission("tasks", "READ"))
+):
+    with belief_scope("get_task_log_sources"):
+        task = task_manager.get_task(task_id)
+        if not task:
+            raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Task not found")
+        return task_manager.get_task_log_sources(task_id)
+# [/DEF:get_task_log_sources:Function]
+
+# [DEF:resolve_task:Function]
+# @COMPLEXITY: 3
+# @PURPOSE: Resolve a task that is awaiting mapping.
+# @PARAM: task_id (str) - The unique identifier of the task.
+# @PARAM: request (ResolveTaskRequest) - The resolution parameters.
+# @PARAM: task_manager (TaskManager) - The task manager instance.
+# @PRE: task must be in AWAITING_MAPPING status.
+# @POST: Task is resolved and resumes execution.
+# @RETURN: Task - The updated task object.
+@router.post("/{task_id}/resolve", response_model=Task)
+async def resolve_task(
+    task_id: str,
+    request: ResolveTaskRequest,
+    task_manager: TaskManager = Depends(get_task_manager),
+    _ = Depends(has_permission("tasks", "WRITE"))
+):
+    with belief_scope("resolve_task"):
+        try:
+            await task_manager.resolve_task(task_id, request.resolution_params)
+            return task_manager.get_task(task_id)
+        except ValueError as e:
+            raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=str(e))
+# [/DEF:resolve_task:Function]
+
+# [DEF:resume_task:Function]
+# @COMPLEXITY: 3
+# @PURPOSE: Resume a task that is awaiting input (e.g., passwords).
+# @PARAM: task_id (str) - The unique identifier of the task.
+# @PARAM: request (ResumeTaskRequest) - The input (passwords).
+# @PARAM: task_manager (TaskManager) - The task manager instance.
+# @PRE: task must be in AWAITING_INPUT status.
+# @POST: Task resumes execution with provided input.
+# @RETURN: Task - The updated task object.
+@router.post("/{task_id}/resume", response_model=Task)
+async def resume_task(
+    task_id: str,
+    request: ResumeTaskRequest,
+    task_manager: TaskManager = Depends(get_task_manager),
+    _ = Depends(has_permission("tasks", "WRITE"))
+):
+    with belief_scope("resume_task"):
+        try:
+            task_manager.resume_task_with_password(task_id, request.passwords)
+            return task_manager.get_task(task_id)
+        except ValueError as e:
+            raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=str(e))
+# [/DEF:resume_task:Function]
+
+# [DEF:clear_tasks:Function]
+# @COMPLEXITY: 3
+# @PURPOSE: Clear tasks matching the status filter.
+# @PARAM: status (Optional[TaskStatus]) - Filter by task status.
+# @PARAM: task_manager (TaskManager) - The task manager instance.
+# @PRE: task_manager is available.
+# @POST: Tasks are removed from memory/persistence.
+@router.delete("", status_code=status.HTTP_204_NO_CONTENT)
+async def clear_tasks(
+    status: Optional[TaskStatus] = None,
+    task_manager: TaskManager = Depends(get_task_manager),
+    _ = Depends(has_permission("tasks", "WRITE"))
+):
+    with belief_scope("clear_tasks", f"status={status}"):
+        task_manager.clear_tasks(status)
+        return
+# [/DEF:clear_tasks:Function]
+
+# [/DEF:TasksRouter:Module]

backend/src/app.py

@@ -1,303 +1,322 @@
-# [DEF:AppModule:Module]
-# @TIER: CRITICAL
-# @SEMANTICS: app, main, entrypoint, fastapi
-# @PURPOSE: The main entry point for the FastAPI application. It initializes the app, configures CORS, sets up dependencies, includes API routers, and defines the WebSocket endpoint for log streaming.
-# @LAYER: UI (API)
-# @RELATION: Depends on the dependency module and API route modules.
-# @INVARIANT: Only one FastAPI app instance exists per process.
-# @INVARIANT: All WebSocket connections must be properly cleaned up on disconnect.
-from pathlib import Path
-
-# project_root is used for static files mounting
-project_root = Path(__file__).resolve().parent.parent.parent
-
-from fastapi import FastAPI, WebSocket, WebSocketDisconnect, Request, HTTPException
-from starlette.middleware.sessions import SessionMiddleware
-from fastapi.middleware.cors import CORSMiddleware
-from fastapi.staticfiles import StaticFiles
-from fastapi.responses import FileResponse
-import asyncio
-
-from .dependencies import get_task_manager, get_scheduler_service
-from .core.utils.network import NetworkError
-from .core.logger import logger, belief_scope
-from .api.routes import plugins, tasks, settings, environments, mappings, migration, connections, git, storage, admin, llm, dashboards, datasets, reports, assistant, clean_release, clean_release_v2, profile, health
-from .api import auth
-
-# [DEF:App:Global]
-# @SEMANTICS: app, fastapi, instance
-# @PURPOSE: The global FastAPI application instance.
-app = FastAPI(
-    title="Superset Tools API",
-    description="API for managing Superset automation tools and plugins.",
-    version="1.0.0",
-)
-# [/DEF:App:Global]
-
-# [DEF:startup_event:Function]
-# @PURPOSE: Handles application startup tasks, such as starting the scheduler.
-# @PRE: None.
-# @POST: Scheduler is started.
-# Startup event
-@app.on_event("startup")
-async def startup_event():
-    with belief_scope("startup_event"):
-        scheduler = get_scheduler_service()
-    scheduler.start()
-# [/DEF:startup_event:Function]
-
-# [DEF:shutdown_event:Function]
-# @PURPOSE: Handles application shutdown tasks, such as stopping the scheduler.
-# @PRE: None.
-# @POST: Scheduler is stopped.
-# Shutdown event
-@app.on_event("shutdown")
-async def shutdown_event():
-    with belief_scope("shutdown_event"):
-        scheduler = get_scheduler_service()
-    scheduler.stop()
-# [/DEF:shutdown_event:Function]
-
-# Configure Session Middleware (required by Authlib for OAuth2 flow)
-from .core.auth.config import auth_config
-app.add_middleware(SessionMiddleware, secret_key=auth_config.SECRET_KEY)
-
-# Configure CORS
-app.add_middleware(
-    CORSMiddleware,
-    allow_origins=["*"],  # Adjust this in production
-    allow_credentials=True,
-    allow_methods=["*"],
-    allow_headers=["*"],
-)
-
-
-# [DEF:network_error_handler:Function]
-# @PURPOSE: Global exception handler for NetworkError.
-# @PRE: request is a FastAPI Request object.
-# @POST: Returns 503 HTTP Exception.
-# @PARAM: request (Request) - The incoming request object.
-# @PARAM: exc (NetworkError) - The exception instance.
-@app.exception_handler(NetworkError)
-async def network_error_handler(request: Request, exc: NetworkError):
-    with belief_scope("network_error_handler"):
-        logger.error(f"Network error: {exc}")
-        return HTTPException(
-            status_code=503,
-            detail="Environment unavailable. Please check if the Superset instance is running."
-        )
-# [/DEF:network_error_handler:Function]
-
-# [DEF:log_requests:Function]
-# @PURPOSE: Middleware to log incoming HTTP requests and their response status.
-# @PRE: request is a FastAPI Request object.
-# @POST: Logs request and response details.
-# @PARAM: request (Request) - The incoming request object.
-# @PARAM: call_next (Callable) - The next middleware or route handler.
-@app.middleware("http")
-async def log_requests(request: Request, call_next):
-    with belief_scope("log_requests"):
-        # Avoid spamming logs for polling endpoints
-        is_polling = request.url.path.endswith("/api/tasks") and request.method == "GET"
-        
-        if not is_polling:
-            logger.info(f"Incoming request: {request.method} {request.url.path}")
-        
-        try:
-            response = await call_next(request)
-            if not is_polling:
-                logger.info(f"Response status: {response.status_code} for {request.url.path}")
-            return response
-        except NetworkError as e:
-            logger.error(f"Network error caught in middleware: {e}")
-            raise HTTPException(
-                status_code=503,
-                detail="Environment unavailable. Please check if the Superset instance is running."
-            )
-# [/DEF:log_requests:Function]
-
-# Include API routes
-app.include_router(auth.router)
-app.include_router(admin.router)
-app.include_router(plugins.router, prefix="/api/plugins", tags=["Plugins"])
-app.include_router(tasks.router, prefix="/api/tasks", tags=["Tasks"])
-app.include_router(settings.router, prefix="/api/settings", tags=["Settings"])
-app.include_router(connections.router, prefix="/api/settings/connections", tags=["Connections"])
-app.include_router(environments.router, tags=["Environments"])
-app.include_router(mappings.router, prefix="/api/mappings", tags=["Mappings"])
-app.include_router(migration.router)
-app.include_router(git.router, prefix="/api/git", tags=["Git"])
-app.include_router(llm.router, prefix="/api/llm", tags=["LLM"])
-app.include_router(storage.router, prefix="/api/storage", tags=["Storage"])
-app.include_router(dashboards.router)
-app.include_router(datasets.router)
-app.include_router(reports.router)
-app.include_router(assistant.router, prefix="/api/assistant", tags=["Assistant"])
-app.include_router(clean_release.router)
-app.include_router(clean_release_v2.router)
-app.include_router(profile.router)
-app.include_router(health.router)
-
-
-# [DEF:api.include_routers:Action]
-# @PURPOSE: Registers all API routers with the FastAPI application.
-# @LAYER: API
-# @SEMANTICS: routes, registration, api
-# [/DEF:api.include_routers:Action]
-
-# [DEF:websocket_endpoint:Function]
-# @PURPOSE: Provides a WebSocket endpoint for real-time log streaming of a task with server-side filtering.
-# @PRE: task_id must be a valid task ID.
-# @POST: WebSocket connection is managed and logs are streamed until disconnect.
-# @TIER: CRITICAL
-# @UX_STATE: Connecting -> Streaming -> (Disconnected)
-#
-# @TEST_CONTRACT: WebSocketLogStreamApi ->
-# {
-#   required_fields: {websocket: WebSocket, task_id: str},
-#   optional_fields: {source: str, level: str},
-#   invariants: [
-#       "Accepts the WebSocket connection",
-#       "Applies source and level filters correctly to streamed logs",
-#       "Cleans up subscriptions on disconnect"
-#   ]
-# }
-# @TEST_FIXTURE: valid_ws_connection -> {"task_id": "test_1", "source": "plugin"}
-# @TEST_EDGE: task_not_found_ws -> closes connection or sends error
-# @TEST_EDGE: empty_task_logs -> waits for new logs
-# @TEST_INVARIANT: consistent_streaming -> verifies: [valid_ws_connection]
-@app.websocket("/ws/logs/{task_id}")
-async def websocket_endpoint(
-    websocket: WebSocket,
-    task_id: str,
-    source: str = None,
-    level: str = None
-):
-    """
-    WebSocket endpoint for real-time log streaming with optional server-side filtering.
-    
-    Query Parameters:
-        source: Filter logs by source component (e.g., "plugin", "superset_api")
-        level: Filter logs by minimum level (DEBUG, INFO, WARNING, ERROR)
-    """
-    with belief_scope("websocket_endpoint", f"task_id={task_id}"):
-        await websocket.accept()
-    
-    # Normalize filter parameters
-    source_filter = source.lower() if source else None
-    level_filter = level.upper() if level else None
-    
-    # Level hierarchy for filtering
-    level_hierarchy = {"DEBUG": 0, "INFO": 1, "WARNING": 2, "ERROR": 3}
-    min_level = level_hierarchy.get(level_filter, 0) if level_filter else 0
-    
-    logger.info(f"WebSocket connection accepted for task {task_id} (source={source_filter}, level={level_filter})")
-    task_manager = get_task_manager()
-    queue = await task_manager.subscribe_logs(task_id)
-    
-    def matches_filters(log_entry) -> bool:
-        """Check if log entry matches the filter criteria."""
-        # Check source filter
-        if source_filter and log_entry.source.lower() != source_filter:
-            return False
-        
-        # Check level filter
-        if level_filter:
-            log_level = level_hierarchy.get(log_entry.level.upper(), 0)
-            if log_level < min_level:
-                return False
-        
-        return True
-    
-    try:
-        # Stream new logs
-        logger.info(f"Starting log stream for task {task_id}")
-        
-        # Send initial logs first to build context (apply filters)
-        initial_logs = task_manager.get_task_logs(task_id)
-        for log_entry in initial_logs:
-            if matches_filters(log_entry):
-                log_dict = log_entry.dict()
-                log_dict['timestamp'] = log_dict['timestamp'].isoformat()
-                await websocket.send_json(log_dict)
-
-        # Force a check for AWAITING_INPUT status immediately upon connection
-        # This ensures that if the task is already waiting when the user connects, they get the prompt.
-        task = task_manager.get_task(task_id)
-        if task and task.status == "AWAITING_INPUT" and task.input_request:
-             # Construct a synthetic log entry to trigger the frontend handler
-             # This is a bit of a hack but avoids changing the websocket protocol significantly
-             synthetic_log = {
-                 "timestamp": task.logs[-1].timestamp.isoformat() if task.logs else "2024-01-01T00:00:00",
-                 "level": "INFO",
-                 "message": "Task paused for user input (Connection Re-established)",
-                 "context": {"input_request": task.input_request}
-             }
-             await websocket.send_json(synthetic_log)
-
-        while True:
-            log_entry = await queue.get()
-            
-            # Apply server-side filtering
-            if not matches_filters(log_entry):
-                continue
-            
-            log_dict = log_entry.dict()
-            log_dict['timestamp'] = log_dict['timestamp'].isoformat()
-            await websocket.send_json(log_dict)
-            
-            # If task is finished, we could potentially close the connection
-            # but let's keep it open for a bit or until the client disconnects
-            if "Task completed successfully" in log_entry.message or "Task failed" in log_entry.message:
-                # Wait a bit to ensure client receives the last message
-                await asyncio.sleep(2)
-                # DO NOT BREAK here - allow client to keep connection open if they want to review logs
-                # or until they disconnect. Breaking closes the socket immediately.
-                # break
-
-    except WebSocketDisconnect:
-        logger.info(f"WebSocket connection disconnected for task {task_id}")
-    except Exception as e:
-        logger.error(f"WebSocket error for task {task_id}: {e}")
-    finally:
-        task_manager.unsubscribe_logs(task_id, queue)
-# [/DEF:websocket_endpoint:Function]
-
-# [DEF:StaticFiles:Mount]
-# @SEMANTICS: static, frontend, spa
-# @PURPOSE: Mounts the frontend build directory to serve static assets.
-frontend_path = project_root / "frontend" / "build"
-if frontend_path.exists():
-    app.mount("/_app", StaticFiles(directory=str(frontend_path / "_app")), name="static")
-
-    # [DEF:serve_spa:Function]
-    # @PURPOSE: Serves the SPA frontend for any path not matched by API routes.
-    # @PRE: frontend_path exists.
-    # @POST: Returns the requested file or index.html.
-    @app.get("/{file_path:path}", include_in_schema=False)
-    async def serve_spa(file_path: str):
-        with belief_scope("serve_spa"):
-            # Only serve SPA for non-API paths
-            # API routes are registered separately and should be matched by FastAPI first
-            if file_path and (file_path.startswith("api/") or file_path.startswith("/api/") or file_path == "api"):
-                # This should not happen if API routers are properly registered
-                # Return 404 instead of serving HTML
-                raise HTTPException(status_code=404, detail=f"API endpoint not found: {file_path}")
-        
-        full_path = frontend_path / file_path
-        if file_path and full_path.is_file():
-            return FileResponse(str(full_path))
-        return FileResponse(str(frontend_path / "index.html"))
-    # [/DEF:serve_spa:Function]
-else:
-    # [DEF:read_root:Function]
-    # @PURPOSE: A simple root endpoint to confirm that the API is running when frontend is missing.
-    # @PRE: None.
-    # @POST: Returns a JSON message indicating API status.
-    @app.get("/")
-    async def read_root():
-        with belief_scope("read_root"):
-            return {"message": "Superset Tools API is running (Frontend build not found)"}
-    # [/DEF:read_root:Function]
-# [/DEF:StaticFiles:Mount]
-# [/DEF:AppModule:Module]
+# [DEF:AppModule:Module]
+# @COMPLEXITY: 5
+# @SEMANTICS: app, main, entrypoint, fastapi
+# @PURPOSE: The main entry point for the FastAPI application. It initializes the app, configures CORS, sets up dependencies, includes API routers, and defines the WebSocket endpoint for log streaming.
+# @LAYER: UI (API)
+# @RELATION: DEPENDS_ON ->[backend.src.dependencies]
+# @RELATION: DEPENDS_ON ->[backend.src.api.routes]
+# @INVARIANT: Only one FastAPI app instance exists per process.
+# @INVARIANT: All WebSocket connections must be properly cleaned up on disconnect.
+# @PRE: Python environment and dependencies installed; configuration database available.
+# @POST: FastAPI app instance is created, middleware configured, and routes registered.
+# @SIDE_EFFECT: Starts background scheduler and binds network ports for HTTP/WS traffic.
+# @DATA_CONTRACT: [HTTP Request | WS Message] -> [HTTP Response | JSON Log Stream]
+
+from pathlib import Path
+
+# project_root is used for static files mounting
+project_root = Path(__file__).resolve().parent.parent.parent
+
+from fastapi import FastAPI, WebSocket, WebSocketDisconnect, Request, HTTPException
+from starlette.middleware.sessions import SessionMiddleware
+from fastapi.middleware.cors import CORSMiddleware
+from fastapi.staticfiles import StaticFiles
+from fastapi.responses import FileResponse
+import asyncio
+
+from .dependencies import get_task_manager, get_scheduler_service
+from .core.encryption_key import ensure_encryption_key
+from .core.utils.network import NetworkError
+from .core.logger import logger, belief_scope
+from .api.routes import plugins, tasks, settings, environments, mappings, migration, connections, git, storage, admin, llm, dashboards, datasets, reports, assistant, clean_release, clean_release_v2, profile, health
+from .api import auth
+
+# [DEF:App:Global]
+# @COMPLEXITY: 1
+# @SEMANTICS: app, fastapi, instance
+# @PURPOSE: The global FastAPI application instance.
+app = FastAPI(
+    title="Superset Tools API",
+    description="API for managing Superset automation tools and plugins.",
+    version="1.0.0",
+)
+# [/DEF:App:Global]
+
+# [DEF:startup_event:Function]
+# @COMPLEXITY: 3
+# @PURPOSE: Handles application startup tasks, such as starting the scheduler.
+# @PRE: None.
+# @POST: Scheduler is started.
+# Startup event
+@app.on_event("startup")
+async def startup_event():
+    with belief_scope("startup_event"):
+        ensure_encryption_key()
+        scheduler = get_scheduler_service()
+    scheduler.start()
+# [/DEF:startup_event:Function]
+
+# [DEF:shutdown_event:Function]
+# @COMPLEXITY: 3
+# @PURPOSE: Handles application shutdown tasks, such as stopping the scheduler.
+# @PRE: None.
+# @POST: Scheduler is stopped.
+# Shutdown event
+@app.on_event("shutdown")
+async def shutdown_event():
+    with belief_scope("shutdown_event"):
+        scheduler = get_scheduler_service()
+        scheduler.stop()
+# [/DEF:shutdown_event:Function]
+
+# Configure Session Middleware (required by Authlib for OAuth2 flow)
+from .core.auth.config import auth_config
+app.add_middleware(SessionMiddleware, secret_key=auth_config.SECRET_KEY)
+
+# Configure CORS
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],  # Adjust this in production
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+
+# [DEF:network_error_handler:Function]
+# @COMPLEXITY: 1
+# @PURPOSE: Global exception handler for NetworkError.
+# @PRE: request is a FastAPI Request object.
+# @POST: Returns 503 HTTP Exception.
+# @PARAM: request (Request) - The incoming request object.
+# @PARAM: exc (NetworkError) - The exception instance.
+@app.exception_handler(NetworkError)
+async def network_error_handler(request: Request, exc: NetworkError):
+    with belief_scope("network_error_handler"):
+        logger.error(f"Network error: {exc}")
+        return HTTPException(
+            status_code=503,
+            detail="Environment unavailable. Please check if the Superset instance is running."
+        )
+# [/DEF:network_error_handler:Function]
+
+# [DEF:log_requests:Function]
+# @COMPLEXITY: 3
+# @PURPOSE: Middleware to log incoming HTTP requests and their response status.
+# @PRE: request is a FastAPI Request object.
+# @POST: Logs request and response details.
+# @PARAM: request (Request) - The incoming request object.
+# @PARAM: call_next (Callable) - The next middleware or route handler.
+@app.middleware("http")
+async def log_requests(request: Request, call_next):
+    with belief_scope("log_requests"):
+        # Avoid spamming logs for polling endpoints
+        is_polling = request.url.path.endswith("/api/tasks") and request.method == "GET"
+        
+        if not is_polling:
+            logger.info(f"Incoming request: {request.method} {request.url.path}")
+        
+        try:
+            response = await call_next(request)
+            if not is_polling:
+                logger.info(f"Response status: {response.status_code} for {request.url.path}")
+            return response
+        except NetworkError as e:
+            logger.error(f"Network error caught in middleware: {e}")
+            raise HTTPException(
+                status_code=503,
+                detail="Environment unavailable. Please check if the Superset instance is running."
+            )
+# [/DEF:log_requests:Function]
+
+# Include API routes
+app.include_router(auth.router)
+app.include_router(admin.router)
+app.include_router(plugins.router, prefix="/api/plugins", tags=["Plugins"])
+app.include_router(tasks.router, prefix="/api/tasks", tags=["Tasks"])
+app.include_router(settings.router, prefix="/api/settings", tags=["Settings"])
+app.include_router(connections.router, prefix="/api/settings/connections", tags=["Connections"])
+app.include_router(environments.router, tags=["Environments"])
+app.include_router(mappings.router, prefix="/api/mappings", tags=["Mappings"])
+app.include_router(migration.router)
+app.include_router(git.router, prefix="/api/git", tags=["Git"])
+app.include_router(llm.router, prefix="/api/llm", tags=["LLM"])
+app.include_router(storage.router, prefix="/api/storage", tags=["Storage"])
+app.include_router(dashboards.router)
+app.include_router(datasets.router)
+app.include_router(reports.router)
+app.include_router(assistant.router, prefix="/api/assistant", tags=["Assistant"])
+app.include_router(clean_release.router)
+app.include_router(clean_release_v2.router)
+app.include_router(profile.router)
+app.include_router(health.router)
+
+
+# [DEF:api.include_routers:Action]
+# @COMPLEXITY: 1
+# @PURPOSE: Registers all API routers with the FastAPI application.
+# @LAYER: API
+# @SEMANTICS: routes, registration, api
+# [/DEF:api.include_routers:Action]
+
+# [DEF:websocket_endpoint:Function]
+# @COMPLEXITY: 5
+# @PURPOSE: Provides a WebSocket endpoint for real-time log streaming of a task with server-side filtering.
+# @PRE: task_id must be a valid task ID.
+# @POST: WebSocket connection is managed and logs are streamed until disconnect.
+# @SIDE_EFFECT: Subscribes to TaskManager log queue and broadcasts messages over network.
+# @DATA_CONTRACT: [task_id: str, source: str, level: str] -> [JSON log entry objects]
+# @UX_STATE: Connecting -> Streaming -> (Disconnected)
+#
+# @TEST_CONTRACT: WebSocketLogStreamApi ->
+# {
+#   required_fields: {websocket: WebSocket, task_id: str},
+#   optional_fields: {source: str, level: str},
+#   invariants: [
+#       "Accepts the WebSocket connection",
+#       "Applies source and level filters correctly to streamed logs",
+#       "Cleans up subscriptions on disconnect"
+#   ]
+# }
+# @TEST_FIXTURE: valid_ws_connection -> {"task_id": "test_1", "source": "plugin"}
+# @TEST_EDGE: task_not_found_ws -> closes connection or sends error
+# @TEST_EDGE: empty_task_logs -> waits for new logs
+# @TEST_INVARIANT: consistent_streaming -> verifies: [valid_ws_connection]
+@app.websocket("/ws/logs/{task_id}")
+async def websocket_endpoint(
+    websocket: WebSocket,
+    task_id: str,
+    source: str = None,
+    level: str = None
+):
+    """
+    WebSocket endpoint for real-time log streaming with optional server-side filtering.
+    
+    Query Parameters:
+        source: Filter logs by source component (e.g., "plugin", "superset_api")
+        level: Filter logs by minimum level (DEBUG, INFO, WARNING, ERROR)
+    """
+    with belief_scope("websocket_endpoint", f"task_id={task_id}"):
+        await websocket.accept()
+    
+    # Normalize filter parameters
+    source_filter = source.lower() if source else None
+    level_filter = level.upper() if level else None
+    
+    # Level hierarchy for filtering
+    level_hierarchy = {"DEBUG": 0, "INFO": 1, "WARNING": 2, "ERROR": 3}
+    min_level = level_hierarchy.get(level_filter, 0) if level_filter else 0
+    
+    logger.info(f"WebSocket connection accepted for task {task_id} (source={source_filter}, level={level_filter})")
+    task_manager = get_task_manager()
+    queue = await task_manager.subscribe_logs(task_id)
+    
+    def matches_filters(log_entry) -> bool:
+        """Check if log entry matches the filter criteria."""
+        # Check source filter
+        if source_filter and log_entry.source.lower() != source_filter:
+            return False
+        
+        # Check level filter
+        if level_filter:
+            log_level = level_hierarchy.get(log_entry.level.upper(), 0)
+            if log_level < min_level:
+                return False
+        
+        return True
+    
+    try:
+        # Stream new logs
+        logger.info(f"Starting log stream for task {task_id}")
+        
+        # Send initial logs first to build context (apply filters)
+        initial_logs = task_manager.get_task_logs(task_id)
+        for log_entry in initial_logs:
+            if matches_filters(log_entry):
+                log_dict = log_entry.dict()
+                log_dict['timestamp'] = log_dict['timestamp'].isoformat()
+                await websocket.send_json(log_dict)
+
+        # Force a check for AWAITING_INPUT status immediately upon connection
+        # This ensures that if the task is already waiting when the user connects, they get the prompt.
+        task = task_manager.get_task(task_id)
+        if task and task.status == "AWAITING_INPUT" and task.input_request:
+             # Construct a synthetic log entry to trigger the frontend handler
+             # This is a bit of a hack but avoids changing the websocket protocol significantly
+             synthetic_log = {
+                 "timestamp": task.logs[-1].timestamp.isoformat() if task.logs else "2024-01-01T00:00:00",
+                 "level": "INFO",
+                 "message": "Task paused for user input (Connection Re-established)",
+                 "context": {"input_request": task.input_request}
+             }
+             await websocket.send_json(synthetic_log)
+
+        while True:
+            log_entry = await queue.get()
+            
+            # Apply server-side filtering
+            if not matches_filters(log_entry):
+                continue
+            
+            log_dict = log_entry.dict()
+            log_dict['timestamp'] = log_dict['timestamp'].isoformat()
+            await websocket.send_json(log_dict)
+            
+            # If task is finished, we could potentially close the connection
+            # but let's keep it open for a bit or until the client disconnects
+            if "Task completed successfully" in log_entry.message or "Task failed" in log_entry.message:
+                # Wait a bit to ensure client receives the last message
+                await asyncio.sleep(2)
+                # DO NOT BREAK here - allow client to keep connection open if they want to review logs
+                # or until they disconnect. Breaking closes the socket immediately.
+                # break
+
+    except WebSocketDisconnect:
+        logger.info(f"WebSocket connection disconnected for task {task_id}")
+    except Exception as e:
+        logger.error(f"WebSocket error for task {task_id}: {e}")
+    finally:
+        task_manager.unsubscribe_logs(task_id, queue)
+# [/DEF:websocket_endpoint:Function]
+
+# [DEF:StaticFiles:Mount]
+# @COMPLEXITY: 1
+# @SEMANTICS: static, frontend, spa
+# @PURPOSE: Mounts the frontend build directory to serve static assets.
+frontend_path = project_root / "frontend" / "build"
+if frontend_path.exists():
+    app.mount("/_app", StaticFiles(directory=str(frontend_path / "_app")), name="static")
+
+    # [DEF:serve_spa:Function]
+    # @COMPLEXITY: 1
+    # @PURPOSE: Serves the SPA frontend for any path not matched by API routes.
+    # @PRE: frontend_path exists.
+    # @POST: Returns the requested file or index.html.
+    @app.get("/{file_path:path}", include_in_schema=False)
+    async def serve_spa(file_path: str):
+        with belief_scope("serve_spa"):
+            # Only serve SPA for non-API paths
+            # API routes are registered separately and should be matched by FastAPI first
+            if file_path and (file_path.startswith("api/") or file_path.startswith("/api/") or file_path == "api"):
+                # This should not happen if API routers are properly registered
+                # Return 404 instead of serving HTML
+                raise HTTPException(status_code=404, detail=f"API endpoint not found: {file_path}")
+        
+        full_path = frontend_path / file_path
+        if file_path and full_path.is_file():
+            return FileResponse(str(full_path))
+        return FileResponse(str(frontend_path / "index.html"))
+    # [/DEF:serve_spa:Function]
+else:
+    # [DEF:read_root:Function]
+    # @COMPLEXITY: 1
+    # @PURPOSE: A simple root endpoint to confirm that the API is running when frontend is missing.
+    # @PRE: None.
+    # @POST: Returns a JSON message indicating API status.
+    @app.get("/")
+    async def read_root():
+        with belief_scope("read_root"):
+            return {"message": "Superset Tools API is running (Frontend build not found)"}
+    # [/DEF:read_root:Function]
+# [/DEF:StaticFiles:Mount]
+# [/DEF:AppModule:Module]

backend/src/core/__tests__/test_config_manager_compat.py

@@ -0,0 +1,53 @@
+# [DEF:backend.src.core.__tests__.test_config_manager_compat:Module]
+# @COMPLEXITY: 3
+# @SEMANTICS: config-manager, compatibility, payload, tests
+# @PURPOSE: Verifies ConfigManager compatibility wrappers preserve legacy payload sections.
+# @LAYER: Domain
+# @RELATION: VERIFIES -> ConfigManager
+
+from src.core.config_manager import ConfigManager
+from src.core.config_models import AppConfig, GlobalSettings
+
+
+# [DEF:test_get_payload_preserves_legacy_sections:Function]
+# @PURPOSE: Ensure get_payload merges typed config into raw payload without dropping legacy sections.
+def test_get_payload_preserves_legacy_sections():
+    manager = ConfigManager.__new__(ConfigManager)
+    manager.raw_payload = {"notifications": {"smtp": {"host": "mail.local"}}}
+    manager.config = AppConfig(environments=[], settings=GlobalSettings())
+
+    payload = manager.get_payload()
+
+    assert payload["settings"]["migration_sync_cron"] == "0 2 * * *"
+    assert payload["notifications"]["smtp"]["host"] == "mail.local"
+# [/DEF:test_get_payload_preserves_legacy_sections:Function]
+
+
+# [DEF:test_save_config_accepts_raw_payload_and_keeps_extras:Function]
+# @PURPOSE: Ensure save_config accepts raw dict payload, refreshes typed config, and preserves extra sections.
+def test_save_config_accepts_raw_payload_and_keeps_extras(monkeypatch):
+    manager = ConfigManager.__new__(ConfigManager)
+    manager.raw_payload = {}
+    manager.config = AppConfig(environments=[], settings=GlobalSettings())
+
+    persisted = {}
+
+    def _capture_save(config, session=None):
+        persisted["payload"] = manager.get_payload()
+
+    monkeypatch.setattr(manager, "_save_config_to_db", _capture_save)
+
+    manager.save_config(
+        {
+            "environments": [],
+            "settings": GlobalSettings().model_dump(),
+            "notifications": {"telegram": {"bot_token": "secret"}},
+        }
+    )
+
+    assert manager.raw_payload["notifications"]["telegram"]["bot_token"] == "secret"
+    assert manager.config.settings.migration_sync_cron == "0 2 * * *"
+    assert persisted["payload"]["notifications"]["telegram"]["bot_token"] == "secret"
+# [/DEF:test_save_config_accepts_raw_payload_and_keeps_extras:Function]
+
+# [/DEF:backend.src.core.__tests__.test_config_manager_compat:Module]

backend/src/core/__tests__/test_superset_profile_lookup.py

@@ -1,5 +1,5 @@
 # [DEF:backend.src.core.__tests__.test_superset_profile_lookup:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: tests, superset, profile, lookup, fallback, sorting
 # @PURPOSE: Verifies Superset profile lookup adapter payload normalization and fallback error precedence.
 # @LAYER: Domain

backend/src/core/__tests__/test_throttled_scheduler.py

@@ -3,7 +3,7 @@ from datetime import time, date, datetime, timedelta
 from src.core.scheduler import ThrottledSchedulerConfigurator
 
 # [DEF:test_throttled_scheduler:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @PURPOSE: Unit tests for ThrottledSchedulerConfigurator distribution logic.
 
 def test_calculate_schedule_even_distribution():

backend/src/core/async_superset_client.py

@@ -1,11 +1,15 @@
 # [DEF:backend.src.core.async_superset_client:Module]
 #
-# @TIER: CRITICAL
+# @COMPLEXITY: 5
 # @SEMANTICS: superset, async, client, httpx, dashboards, datasets
 # @PURPOSE: Async Superset client for dashboard hot-path requests without blocking FastAPI event loop.
 # @LAYER: Core
-# @RELATION: DEPENDS_ON -> backend.src.core.superset_client
-# @RELATION: DEPENDS_ON -> backend.src.core.utils.async_network.AsyncAPIClient
+# @PRE: Environment configuration is valid and Superset endpoint is reachable.
+# @POST: Provides non-blocking API access to Superset resources.
+# @SIDE_EFFECT: Performs network I/O via httpx.
+# @DATA_CONTRACT: Input[Environment] -> Model[dashboard, chart, dataset]
+# @RELATION: [DEPENDS_ON] ->[backend.src.core.superset_client]
+# @RELATION: [DEPENDS_ON] ->[backend.src.core.utils.async_network.AsyncAPIClient]
 # @INVARIANT: Async dashboard operations reuse shared auth cache and avoid sync requests in async routes.
 
 # [SECTION: IMPORTS]
@@ -21,13 +25,19 @@ from .utils.async_network import AsyncAPIClient
 # [/SECTION]
 
 
-# [DEF:AsyncSupersetClient:Class]
+# [DEF:backend.src.core.async_superset_client.AsyncSupersetClient:Class]
+# @COMPLEXITY: 3
 # @PURPOSE: Async sibling of SupersetClient for dashboard read paths.
+# @RELATION: [INHERITS] ->[backend.src.core.superset_client.SupersetClient]
+# @RELATION: [DEPENDS_ON] ->[backend.src.core.utils.async_network.AsyncAPIClient]
+# @RELATION: [CALLS] ->[backend.src.core.utils.async_network.AsyncAPIClient.request]
 class AsyncSupersetClient(SupersetClient):
-    # [DEF:__init__:Function]
+    # [DEF:backend.src.core.async_superset_client.AsyncSupersetClient.__init__:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Initialize async Superset client with AsyncAPIClient transport.
-    # @PRE: env is valid.
+    # @PRE: env is valid Environment instance.
     # @POST: Client uses async network transport and inherited projection helpers.
+    # @DATA_CONTRACT: Input[Environment] -> self.network[AsyncAPIClient]
     def __init__(self, env: Environment):
         self.env = env
         auth_payload = {
@@ -42,18 +52,22 @@ class AsyncSupersetClient(SupersetClient):
             timeout=env.timeout,
         )
         self.delete_before_reimport = False
-    # [/DEF:__init__:Function]
+    # [/DEF:backend.src.core.async_superset_client.AsyncSupersetClient.__init__:Function]
 
-    # [DEF:aclose:Function]
+    # [DEF:backend.src.core.async_superset_client.AsyncSupersetClient.aclose:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Close async transport resources.
     # @POST: Underlying AsyncAPIClient is closed.
+    # @SIDE_EFFECT: Closes network sockets.
     async def aclose(self) -> None:
         await self.network.aclose()
-    # [/DEF:aclose:Function]
+    # [/DEF:backend.src.core.async_superset_client.AsyncSupersetClient.aclose:Function]
 
-    # [DEF:get_dashboards_page_async:Function]
+    # [DEF:backend.src.core.async_superset_client.AsyncSupersetClient.get_dashboards_page_async:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Fetch one dashboards page asynchronously.
     # @POST: Returns total count and page result list.
+    # @DATA_CONTRACT: Input[query: Optional[Dict]] -> Output[Tuple[int, List[Dict]]]
     async def get_dashboards_page_async(self, query: Optional[Dict] = None) -> Tuple[int, List[Dict]]:
         with belief_scope("AsyncSupersetClient.get_dashboards_page_async"):
             validated_query = self._validate_query_params(query or {})
@@ -85,8 +99,10 @@ class AsyncSupersetClient(SupersetClient):
     # [/DEF:get_dashboards_page_async:Function]
 
     # [DEF:get_dashboard_async:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Fetch one dashboard payload asynchronously.
     # @POST: Returns raw dashboard payload from Superset API.
+    # @DATA_CONTRACT: Input[dashboard_id: int] -> Output[Dict]
     async def get_dashboard_async(self, dashboard_id: int) -> Dict:
         with belief_scope("AsyncSupersetClient.get_dashboard_async", f"id={dashboard_id}"):
             response = await self.network.request(method="GET", endpoint=f"/dashboard/{dashboard_id}")
@@ -94,8 +110,10 @@ class AsyncSupersetClient(SupersetClient):
     # [/DEF:get_dashboard_async:Function]
 
     # [DEF:get_chart_async:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Fetch one chart payload asynchronously.
     # @POST: Returns raw chart payload from Superset API.
+    # @DATA_CONTRACT: Input[chart_id: int] -> Output[Dict]
     async def get_chart_async(self, chart_id: int) -> Dict:
         with belief_scope("AsyncSupersetClient.get_chart_async", f"id={chart_id}"):
             response = await self.network.request(method="GET", endpoint=f"/chart/{chart_id}")
@@ -103,8 +121,12 @@ class AsyncSupersetClient(SupersetClient):
     # [/DEF:get_chart_async:Function]
 
     # [DEF:get_dashboard_detail_async:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Fetch dashboard detail asynchronously with concurrent charts/datasets requests.
     # @POST: Returns dashboard detail payload for overview page.
+    # @DATA_CONTRACT: Input[dashboard_id: int] -> Output[Dict]
+    # @RELATION: [CALLS] ->[self.get_dashboard_async]
+    # @RELATION: [CALLS] ->[self.get_chart_async]
     async def get_dashboard_detail_async(self, dashboard_id: int) -> Dict:
         with belief_scope("AsyncSupersetClient.get_dashboard_detail_async", f"id={dashboard_id}"):
             dashboard_response = await self.get_dashboard_async(dashboard_id)
@@ -269,7 +291,7 @@ class AsyncSupersetClient(SupersetClient):
                     db_name = db_payload.get("database_name") if isinstance(db_payload, dict) else None
                     table_name = dataset_data.get("table_name") or dataset_data.get("datasource_name") or dataset_data.get("name") or f"Dataset {dataset_id}"
                     schema = dataset_data.get("schema")
-                    fq_name = f"{schema}.{table_name}" if schema else table_name
+                    fq_name = f" {schema}.{table_name}" if schema else table_name
                     datasets.append({
                         "id": int(dataset_id),
                         "table_name": table_name,

backend/src/core/auth/__tests__/test_auth.py

@@ -1,5 +1,5 @@
 # [DEF:test_auth:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @PURPOSE: Unit tests for authentication module
 # @LAYER: Domain
 # @RELATION: VERIFIES -> src.core.auth

backend/src/core/auth/jwt.py

@@ -1,6 +1,6 @@
 # [DEF:backend.src.core.auth.jwt:Module]
 #
-# @TIER:      STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: jwt, token, session, auth
 # @PURPOSE:   JWT token generation and validation logic.
 # @LAYER:     Core

backend/src/core/auth/logger.py

@@ -1,6 +1,6 @@
 # [DEF:backend.src.core.auth.logger:Module]
 #
-# @TIER:      STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: auth, logger, audit, security
 # @PURPOSE:   Audit logging for security-related events.
 # @LAYER:     Core

backend/src/core/auth/repository.py

@@ -1,202 +1,59 @@
-# [DEF:backend.src.core.auth.repository:Module]
+# [DEF:AuthRepository:Module]
 #
-# @TIER:      CRITICAL
+# @TIER: CRITICAL
+# @COMPLEXITY: 5
 # @SEMANTICS: auth, repository, database, user, role, permission
 # @PURPOSE:   Data access layer for authentication and user preference entities.
 # @LAYER:     Domain
+# @PRE:       SQLAlchemy session manager and auth models are available.
+# @POST:      Provides transactional access to Auth-related database entities.
+# @SIDE_EFFECT: Performs database I/O via SQLAlchemy sessions.
+# @DATA_CONTRACT: Input[Session] -> Model[User, Role, Permission, UserDashboardPreference]
 # @RELATION:  [DEPENDS_ON] ->[sqlalchemy.orm.Session]
-# @RELATION:  [DEPENDS_ON] ->[backend.src.models.auth]
-# @RELATION:  [DEPENDS_ON] ->[backend.src.models.profile]
-# @RELATION:  [DEPENDS_ON] ->[backend.src.core.logger.belief_scope]
+# @RELATION:  [DEPENDS_ON] ->[User:Class]
+# @RELATION:  [DEPENDS_ON] ->[Role:Class]
+# @RELATION:  [DEPENDS_ON] ->[Permission:Class]
+# @RELATION:  [DEPENDS_ON] ->[UserDashboardPreference:Class]
+# @RELATION:  [DEPENDS_ON] ->[belief_scope:Function]
 # @INVARIANT: All database read/write operations must execute via the injected SQLAlchemy session boundary.
 #
 # [SECTION: IMPORTS]
 from typing import List, Optional
 
-from sqlalchemy.orm import Session
+from sqlalchemy.orm import Session, selectinload
 
 from ...models.auth import Permission, Role, User
 from ...models.profile import UserDashboardPreference
 from ..logger import belief_scope, logger
 # [/SECTION]
 
-# [DEF:AuthRepository:Class]
-# @PURPOSE: Encapsulates database operations for authentication-related entities.
-# @RELATION: [DEPENDS_ON] ->[sqlalchemy.orm.Session]
-class AuthRepository:
-    # [DEF:__init__:Function]
-    # @PURPOSE: Bind repository instance to an existing SQLAlchemy session.
-    # @PRE:     db is an initialized sqlalchemy.orm.Session instance.
-    # @POST:    self.db points to the provided session and is used by all repository methods.
-    # @SIDE_EFFECT: Stores session reference on repository instance state.
-    # @DATA_CONTRACT: Input[Session] -> Output[None]
-    def __init__(self, db: Session):
-        with belief_scope("AuthRepository.__init__"):
-            if not isinstance(db, Session):
-                logger.explore("Invalid session provided to AuthRepository", extra={"type": type(db)})
-                raise TypeError("db must be an instance of sqlalchemy.orm.Session")
-            
-            logger.reason("Binding AuthRepository to database session")
-            self.db = db
-            logger.reflect("AuthRepository initialized")
-    # [/DEF:__init__:Function]
+# [DEF:AuthRepository:Module]
+#
+# @TIER: CRITICAL
+# @COMPLEXITY: 5
+# @SEMANTICS: auth, repository, database, user, role, permission
+# @PURPOSE:   Data access layer for authentication and user preference entities.
+# @LAYER:     Domain
+# @PRE:       SQLAlchemy session manager and auth models are available.
+# @POST:      Provides transactional access to Auth-related database entities.
+# @SIDE_EFFECT: Performs database I/O via SQLAlchemy sessions.
+# @DATA_CONTRACT: Input[Session] -> Model[User, Role, Permission, UserDashboardPreference]
+# @RELATION:  [DEPENDS_ON] ->[User:Class]
+# @RELATION:  [DEPENDS_ON] ->[Role:Class]
+# @RELATION:  [DEPENDS_ON] ->[Permission:Class]
+# @RELATION:  [DEPENDS_ON] ->[UserDashboardPreference:Class]
+# @RELATION:  [DEPENDS_ON] ->[belief_scope:Function]
+# @INVARIANT: All database read/write operations must execute via the injected SQLAlchemy session boundary.
+#
+# [SECTION: IMPORTS]
+from typing import List, Optional
 
-    # [DEF:get_user_by_username:Function]
-    # @PURPOSE: Retrieve a user entity by unique username.
-    # @PRE:     username is a non-empty str and self.db is a valid open Session.
-    # @POST:    Returns matching User entity when present, otherwise None.
-    # @SIDE_EFFECT: Executes read-only SELECT query through active DB session.
-    # @DATA_CONTRACT: Input[str] -> Output[Optional[User]]
-    def get_user_by_username(self, username: str) -> Optional[User]:
-        with belief_scope("AuthRepository.get_user_by_username"):
-            if not username or not isinstance(username, str):
-                raise ValueError("username must be a non-empty string")
-            
-            logger.reason(f"Querying user by username: {username}")
-            user = self.db.query(User).filter(User.username == username).first()
-            
-            if user:
-                logger.reflect(f"User found: {username}")
-            else:
-                logger.explore(f"User not found: {username}")
-            return user
-    # [/DEF:get_user_by_username:Function]
+from sqlalchemy.orm import Session, selectinload
 
-    # [DEF:get_user_by_id:Function]
-    # @PURPOSE: Retrieve a user entity by identifier.
-    # @PRE:     user_id is a non-empty str and self.db is a valid open Session.
-    # @POST:    Returns matching User entity when present, otherwise None.
-    # @SIDE_EFFECT: Executes read-only SELECT query through active DB session.
-    # @DATA_CONTRACT: Input[str] -> Output[Optional[User]]
-    def get_user_by_id(self, user_id: str) -> Optional[User]:
-        with belief_scope("AuthRepository.get_user_by_id"):
-            if not user_id or not isinstance(user_id, str):
-                raise ValueError("user_id must be a non-empty string")
-            
-            logger.reason(f"Querying user by ID: {user_id}")
-            user = self.db.query(User).filter(User.id == user_id).first()
-            
-            if user:
-                logger.reflect(f"User found by ID: {user_id}")
-            else:
-                logger.explore(f"User not found by ID: {user_id}")
-            return user
-    # [/DEF:get_user_by_id:Function]
+from ...models.auth import Permission, Role, User
+from ...models.profile import UserDashboardPreference
+from ..logger import belief_scope, logger
+# [/SECTION]
 
-    # [DEF:get_role_by_name:Function]
-    # @PURPOSE: Retrieve a role entity by role name.
-    # @PRE:     name is a non-empty str and self.db is a valid open Session.
-    # @POST:    Returns matching Role entity when present, otherwise None.
-    # @SIDE_EFFECT: Executes read-only SELECT query through active DB session.
-    # @DATA_CONTRACT: Input[str] -> Output[Optional[Role]]
-    def get_role_by_name(self, name: str) -> Optional[Role]:
-        with belief_scope("AuthRepository.get_role_by_name"):
-            return self.db.query(Role).filter(Role.name == name).first()
-    # [/DEF:get_role_by_name:Function]
-
-    # [DEF:update_last_login:Function]
-    # @PURPOSE: Update last_login timestamp for the provided user entity.
-    # @PRE:     user is a managed User instance and self.db is a valid open Session.
-    # @POST:    user.last_login is set to current UTC timestamp and transaction is committed.
-    # @SIDE_EFFECT: Mutates user entity state and commits database transaction.
-    # @DATA_CONTRACT: Input[User] -> Output[None]
-    def update_last_login(self, user: User):
-        with belief_scope("AuthRepository.update_last_login"):
-            if not isinstance(user, User):
-                raise TypeError("user must be an instance of User")
-            
-            from datetime import datetime
-            logger.reason(f"Updating last login for user: {user.username}")
-            user.last_login = datetime.utcnow()
-            self.db.add(user)
-            self.db.commit()
-            logger.reflect(f"Last login updated and committed for user: {user.username}")
-    # [/DEF:update_last_login:Function]
-
-    # [DEF:get_role_by_id:Function]
-    # @PURPOSE: Retrieve a role entity by identifier.
-    # @PRE:     role_id is a non-empty str and self.db is a valid open Session.
-    # @POST:    Returns matching Role entity when present, otherwise None.
-    # @SIDE_EFFECT: Executes read-only SELECT query through active DB session.
-    # @DATA_CONTRACT: Input[str] -> Output[Optional[Role]]
-    def get_role_by_id(self, role_id: str) -> Optional[Role]:
-        with belief_scope("AuthRepository.get_role_by_id"):
-            return self.db.query(Role).filter(Role.id == role_id).first()
-    # [/DEF:get_role_by_id:Function]
-
-    # [DEF:get_permission_by_id:Function]
-    # @PURPOSE: Retrieve a permission entity by identifier.
-    # @PRE:     perm_id is a non-empty str and self.db is a valid open Session.
-    # @POST:    Returns matching Permission entity when present, otherwise None.
-    # @SIDE_EFFECT: Executes read-only SELECT query through active DB session.
-    # @DATA_CONTRACT: Input[str] -> Output[Optional[Permission]]
-    def get_permission_by_id(self, perm_id: str) -> Optional[Permission]:
-        with belief_scope("AuthRepository.get_permission_by_id"):
-            return self.db.query(Permission).filter(Permission.id == perm_id).first()
-    # [/DEF:get_permission_by_id:Function]
-
-    # [DEF:get_permission_by_resource_action:Function]
-    # @PURPOSE: Retrieve a permission entity by resource and action pair.
-    # @PRE:     resource and action are non-empty str values; self.db is a valid open Session.
-    # @POST:    Returns matching Permission entity when present, otherwise None.
-    # @SIDE_EFFECT: Executes read-only SELECT query through active DB session.
-    # @DATA_CONTRACT: Input[str, str] -> Output[Optional[Permission]]
-    def get_permission_by_resource_action(self, resource: str, action: str) -> Optional[Permission]:
-        with belief_scope("AuthRepository.get_permission_by_resource_action"):
-            return self.db.query(Permission).filter(
-                Permission.resource == resource,
-                Permission.action == action
-            ).first()
-    # [/DEF:get_permission_by_resource_action:Function]
-
-    # [DEF:get_user_dashboard_preference:Function]
-    # @PURPOSE: Retrieve dashboard preference entity owned by specified user.
-    # @PRE:     user_id is a non-empty str and self.db is a valid open Session.
-    # @POST:    Returns matching UserDashboardPreference entity when present, otherwise None.
-    # @SIDE_EFFECT: Executes read-only SELECT query through active DB session.
-    # @DATA_CONTRACT: Input[str] -> Output[Optional[UserDashboardPreference]]
-    def get_user_dashboard_preference(self, user_id: str) -> Optional[UserDashboardPreference]:
-        with belief_scope("AuthRepository.get_user_dashboard_preference"):
-            return (
-                self.db.query(UserDashboardPreference)
-                .filter(UserDashboardPreference.user_id == user_id)
-                .first()
-            )
-    # [/DEF:get_user_dashboard_preference:Function]
-
-    # [DEF:save_user_dashboard_preference:Function]
-    # @PURPOSE: Persist dashboard preference entity and return refreshed persistent row.
-    # @PRE:     preference is a valid UserDashboardPreference entity and self.db is a valid open Session.
-    # @POST:    preference is committed to DB, refreshed from DB state, and returned.
-    # @SIDE_EFFECT: Performs INSERT/UPDATE commit and refresh via active DB session.
-    # @DATA_CONTRACT: Input[UserDashboardPreference] -> Output[UserDashboardPreference]
-    def save_user_dashboard_preference(
-        self,
-        preference: UserDashboardPreference,
-    ) -> UserDashboardPreference:
-        with belief_scope("AuthRepository.save_user_dashboard_preference"):
-            if not isinstance(preference, UserDashboardPreference):
-                raise TypeError("preference must be an instance of UserDashboardPreference")
-            
-            logger.reason(f"Saving dashboard preference for user: {preference.user_id}")
-            self.db.add(preference)
-            self.db.commit()
-            self.db.refresh(preference)
-            logger.reflect(f"Dashboard preference saved and refreshed for user: {preference.user_id}")
-            return preference
-    # [/DEF:save_user_dashboard_preference:Function]
-
-    # [DEF:list_permissions:Function]
-    # @PURPOSE: List all permission entities available in storage.
-    # @PRE:     self.db is a valid open Session.
-    # @POST:    Returns list containing all Permission entities visible to the session.
-    # @SIDE_EFFECT: Executes read-only SELECT query through active DB session.
-    # @DATA_CONTRACT: Input[None] -> Output[List[Permission]]
-    def list_permissions(self) -> List[Permission]:
-        with belief_scope("AuthRepository.list_permissions"):
-            return self.db.query(Permission).all()
-    # [/DEF:list_permissions:Function]
-
-
-# [/DEF:AuthRepository:Class]
-# [/DEF:backend.src.core.auth.repository:Module]
+# [/DEF:AuthRepository:Module]
+# [/DEF:AuthRepository:Module]

backend/src/core/config_manager.py

@@ -1,21 +1,26 @@
-# [DEF:ConfigManagerModule:Module]
+# [DEF:ConfigManager:Module]
 #
 # @TIER: CRITICAL
+# @COMPLEXITY: 5
 # @SEMANTICS: config, manager, persistence, migration, postgresql
 # @PURPOSE: Manages application configuration persistence in DB with one-time migration from legacy JSON.
 # @LAYER: Domain
-# @RELATION: [DEPENDS_ON] ->[ConfigModels]
+# @PRE: Database schema for AppConfigRecord must be initialized.
+# @POST: Configuration is loaded into memory and logger is configured.
+# @SIDE_EFFECT: Performs DB I/O and may update global logging level.
+# @DATA_CONTRACT: Input[json, record] -> Model[AppConfig]
+# @RELATION: [DEPENDS_ON] ->[AppConfig]
 # @RELATION: [DEPENDS_ON] ->[SessionLocal]
 # @RELATION: [DEPENDS_ON] ->[AppConfigRecord]
+# @RELATION: [DEPENDS_ON] ->[FileIO]
 # @RELATION: [CALLS] ->[logger]
 # @RELATION: [CALLS] ->[configure_logger]
-# @RELATION: [BINDS_TO] ->[ConfigManager]
 # @INVARIANT: Configuration must always be representable by AppConfig and persisted under global record id.
 #
 import json
 import os
 from pathlib import Path
-from typing import Optional, List
+from typing import Any, Optional, List
 
 from sqlalchemy.orm import Session
 
@@ -27,7 +32,11 @@ from .logger import logger, configure_logger, belief_scope
 
 # [DEF:ConfigManager:Class]
 # @TIER: CRITICAL
+# @COMPLEXITY: 5
 # @PURPOSE: Handles application configuration load, validation, mutation, and persistence lifecycle.
+# @PRE: Database is accessible and AppConfigRecord schema is loaded.
+# @POST: Configuration state is synchronized between memory and database.
+# @SIDE_EFFECT: Performs DB I/O, OS path validation, and logger reconfiguration.
 class ConfigManager:
     # [DEF:__init__:Function]
     # @PURPOSE: Initialize manager state from persisted or migrated configuration.
@@ -44,6 +53,7 @@ class ConfigManager:
             logger.reason(f"Initializing ConfigManager with legacy path: {config_path}")
 
             self.config_path = Path(config_path)
+            self.raw_payload: dict[str, Any] = {}
             self.config: AppConfig = self._load_config()
 
             configure_logger(self.config.settings.logging)
@@ -54,283 +64,5 @@ class ConfigManager:
 
             logger.reflect("ConfigManager initialization complete")
     # [/DEF:__init__:Function]
-
-    # [DEF:_default_config:Function]
-    # @PURPOSE: Build default application configuration fallback.
-    # @PRE: None.
-    # @POST: Returns valid AppConfig with empty environments and default storage settings.
-    # @SIDE_EFFECT: None.
-    # @DATA_CONTRACT: Input(None) -> Output(AppConfig)
-    def _default_config(self) -> AppConfig:
-        with belief_scope("_default_config"):
-            return AppConfig(
-                environments=[],
-                settings=GlobalSettings(storage=StorageConfig()),
-            )
-    # [/DEF:_default_config:Function]
-
-    # [DEF:_load_from_legacy_file:Function]
-    # @PURPOSE: Load legacy JSON configuration for migration fallback path.
-    # @PRE: self.config_path is initialized.
-    # @POST: Returns AppConfig from file payload or safe default.
-    # @SIDE_EFFECT: Filesystem read and error logging.
-    # @DATA_CONTRACT: Input(Path self.config_path) -> Output(AppConfig)
-    def _load_from_legacy_file(self) -> AppConfig:
-        with belief_scope("_load_from_legacy_file"):
-            if not self.config_path.exists():
-                logger.info("[_load_from_legacy_file][Action] Legacy config file not found, using defaults")
-                return self._default_config()
-
-            try:
-                with open(self.config_path, "r", encoding="utf-8") as f:
-                    data = json.load(f)
-                logger.info("[_load_from_legacy_file][Coherence:OK] Legacy configuration loaded")
-                return AppConfig(**data)
-            except Exception as e:
-                logger.error(f"[_load_from_legacy_file][Coherence:Failed] Error loading legacy config: {e}")
-                return self._default_config()
-    # [/DEF:_load_from_legacy_file:Function]
-
-    # [DEF:_get_record:Function]
-    # @PURPOSE: Resolve global configuration record from DB.
-    # @PRE: session is an active SQLAlchemy Session.
-    # @POST: Returns record when present, otherwise None.
-    # @SIDE_EFFECT: Database read query.
-    # @DATA_CONTRACT: Input(Session) -> Output(Optional[AppConfigRecord])
-    def _get_record(self, session: Session) -> Optional[AppConfigRecord]:
-        with belief_scope("_get_record"):
-            return session.query(AppConfigRecord).filter(AppConfigRecord.id == "global").first()
-    # [/DEF:_get_record:Function]
-
-    # [DEF:_load_config:Function]
-    # @PURPOSE: Load configuration from DB or perform one-time migration from legacy JSON.
-    # @PRE: SessionLocal factory is available and AppConfigRecord schema is accessible.
-    # @POST: Returns valid AppConfig and closes opened DB session.
-    # @SIDE_EFFECT: Database read/write, possible migration write, logging.
-    # @DATA_CONTRACT: Input(None) -> Output(AppConfig)
-    def _load_config(self) -> AppConfig:
-        with belief_scope("ConfigManager._load_config"):
-            session: Session = SessionLocal()
-            try:
-                record = self._get_record(session)
-                if record and record.payload:
-                    logger.reason("Configuration found in database")
-                    config = AppConfig(**record.payload)
-                    logger.reflect("Database configuration validated")
-                    return config
-
-                logger.reason("No database config found, initiating legacy migration")
-                config = self._load_from_legacy_file()
-                self._save_config_to_db(config, session=session)
-                logger.reflect("Legacy configuration migrated to database")
-                return config
-            except Exception as e:
-                logger.explore(f"Error loading config from DB: {e}")
-                return self._default_config()
-            finally:
-                session.close()
-    # [/DEF:_load_config:Function]
-
-    # [DEF:_save_config_to_db:Function]
-    # @PURPOSE: Persist provided AppConfig into the global DB configuration record.
-    # @PRE: config is AppConfig; session is either None or an active Session.
-    # @POST: Global DB record payload equals config.model_dump() when commit succeeds.
-    # @SIDE_EFFECT: Database insert/update, commit/rollback, logging.
-    # @DATA_CONTRACT: Input(AppConfig, Optional[Session]) -> Output(None)
-    def _save_config_to_db(self, config: AppConfig, session: Optional[Session] = None):
-        with belief_scope("ConfigManager._save_config_to_db"):
-            if not isinstance(config, AppConfig):
-                raise TypeError("config must be an instance of AppConfig")
-
-            owns_session = session is None
-            db = session or SessionLocal()
-            try:
-                record = self._get_record(db)
-                payload = config.model_dump()
-                if record is None:
-                    logger.reason("Creating new global configuration record")
-                    record = AppConfigRecord(id="global", payload=payload)
-                    db.add(record)
-                else:
-                    logger.reason("Updating existing global configuration record")
-                    record.payload = payload
-                db.commit()
-                logger.reflect("Configuration successfully committed to database")
-            except Exception as e:
-                db.rollback()
-                logger.explore(f"Failed to save configuration: {e}")
-                raise
-            finally:
-                if owns_session:
-                    db.close()
-    # [/DEF:_save_config_to_db:Function]
-
-    # [DEF:save:Function]
-    # @PURPOSE: Persist current in-memory configuration state.
-    # @PRE: self.config is initialized.
-    # @POST: Current self.config is written to DB global record.
-    # @SIDE_EFFECT: Database write and logging via delegated persistence call.
-    # @DATA_CONTRACT: Input(None; self.config: AppConfig) -> Output(None)
-    def save(self):
-        with belief_scope("save"):
-            self._save_config_to_db(self.config)
-    # [/DEF:save:Function]
-
-    # [DEF:get_config:Function]
-    # @PURPOSE: Return current in-memory configuration snapshot.
-    # @PRE: self.config is initialized.
-    # @POST: Returns AppConfig reference stored in manager.
-    # @SIDE_EFFECT: None.
-    # @DATA_CONTRACT: Input(None) -> Output(AppConfig)
-    def get_config(self) -> AppConfig:
-        with belief_scope("get_config"):
-            return self.config
-    # [/DEF:get_config:Function]
-
-    # [DEF:update_global_settings:Function]
-    # @PURPOSE: Replace global settings and persist the resulting configuration.
-    # @PRE: settings is GlobalSettings.
-    # @POST: self.config.settings equals provided settings and DB state is updated.
-    # @SIDE_EFFECT: Mutates self.config, DB write, logger reconfiguration, logging.
-    # @DATA_CONTRACT: Input(GlobalSettings) -> Output(None)
-    def update_global_settings(self, settings: GlobalSettings):
-        with belief_scope("ConfigManager.update_global_settings"):
-            if not isinstance(settings, GlobalSettings):
-                raise TypeError("settings must be an instance of GlobalSettings")
-            
-            logger.reason("Updating global settings and persisting")
-            self.config.settings = settings
-            self.save()
-            configure_logger(settings.logging)
-            logger.reflect("Global settings updated and logger reconfigured")
-    # [/DEF:update_global_settings:Function]
-
-    # [DEF:validate_path:Function]
-    # @PURPOSE: Validate that path exists and is writable, creating it when absent.
-    # @PRE: path is a string path candidate.
-    # @POST: Returns (True, msg) for writable path, else (False, reason).
-    # @SIDE_EFFECT: Filesystem directory creation attempt and OS permission checks.
-    # @DATA_CONTRACT: Input(str path) -> Output(tuple[bool, str])
-    def validate_path(self, path: str) -> tuple[bool, str]:
-        with belief_scope("validate_path"):
-            p = os.path.abspath(path)
-            if not os.path.exists(p):
-                try:
-                    os.makedirs(p, exist_ok=True)
-                except Exception as e:
-                    return False, f"Path does not exist and could not be created: {e}"
-
-            if not os.access(p, os.W_OK):
-                return False, "Path is not writable"
-
-            return True, "Path is valid and writable"
-    # [/DEF:validate_path:Function]
-
-    # [DEF:get_environments:Function]
-    # @PURPOSE: Return all configured environments.
-    # @PRE: self.config is initialized.
-    # @POST: Returns list of Environment models from current configuration.
-    # @SIDE_EFFECT: None.
-    # @DATA_CONTRACT: Input(None) -> Output(List[Environment])
-    def get_environments(self) -> List[Environment]:
-        with belief_scope("get_environments"):
-            return self.config.environments
-    # [/DEF:get_environments:Function]
-
-    # [DEF:has_environments:Function]
-    # @PURPOSE: Check whether at least one environment exists in configuration.
-    # @PRE: self.config is initialized.
-    # @POST: Returns True iff environment list length is greater than zero.
-    # @SIDE_EFFECT: None.
-    # @DATA_CONTRACT: Input(None) -> Output(bool)
-    def has_environments(self) -> bool:
-        with belief_scope("has_environments"):
-            return len(self.config.environments) > 0
-    # [/DEF:has_environments:Function]
-
-    # [DEF:get_environment:Function]
-    # @PURPOSE: Resolve a configured environment by identifier.
-    # @PRE: env_id is string identifier.
-    # @POST: Returns matching Environment when found; otherwise None.
-    # @SIDE_EFFECT: None.
-    # @DATA_CONTRACT: Input(str env_id) -> Output(Optional[Environment])
-    def get_environment(self, env_id: str) -> Optional[Environment]:
-        with belief_scope("get_environment"):
-            for env in self.config.environments:
-                if env.id == env_id:
-                    return env
-            return None
-    # [/DEF:get_environment:Function]
-
-    # [DEF:add_environment:Function]
-    # @PURPOSE: Upsert environment by id into configuration and persist.
-    # @PRE: env is Environment.
-    # @POST: Configuration contains provided env id with new payload persisted.
-    # @SIDE_EFFECT: Mutates environment list, DB write, logging.
-    # @DATA_CONTRACT: Input(Environment) -> Output(None)
-    def add_environment(self, env: Environment):
-        with belief_scope("ConfigManager.add_environment"):
-            if not isinstance(env, Environment):
-                raise TypeError("env must be an instance of Environment")
-
-            logger.reason(f"Adding/Updating environment: {env.id}")
-            self.config.environments = [e for e in self.config.environments if e.id != env.id]
-            self.config.environments.append(env)
-            self.save()
-            logger.reflect(f"Environment {env.id} persisted")
-    # [/DEF:add_environment:Function]
-
-    # [DEF:update_environment:Function]
-    # @PURPOSE: Update existing environment by id and preserve masked password placeholder behavior.
-    # @PRE: env_id is non-empty string and updated_env is Environment.
-    # @POST: Returns True and persists update when target exists; else returns False.
-    # @SIDE_EFFECT: May mutate environment list, DB write, logging.
-    # @DATA_CONTRACT: Input(str env_id, Environment updated_env) -> Output(bool)
-    def update_environment(self, env_id: str, updated_env: Environment) -> bool:
-        with belief_scope("ConfigManager.update_environment"):
-            if not env_id or not isinstance(env_id, str):
-                raise ValueError("env_id must be a non-empty string")
-            if not isinstance(updated_env, Environment):
-                raise TypeError("updated_env must be an instance of Environment")
-
-            logger.reason(f"Attempting to update environment: {env_id}")
-            for i, env in enumerate(self.config.environments):
-                if env.id == env_id:
-                    if updated_env.password == "********":
-                        logger.reason("Preserving existing password for masked update")
-                        updated_env.password = env.password
-
-                    self.config.environments[i] = updated_env
-                    self.save()
-                    logger.reflect(f"Environment {env_id} updated and saved")
-                    return True
-
-            logger.explore(f"Environment {env_id} not found for update")
-            return False
-    # [/DEF:update_environment:Function]
-
-    # [DEF:delete_environment:Function]
-    # @PURPOSE: Delete environment by id and persist when deletion occurs.
-    # @PRE: env_id is non-empty string.
-    # @POST: Environment is removed when present; otherwise configuration is unchanged.
-    # @SIDE_EFFECT: May mutate environment list, conditional DB write, logging.
-    # @DATA_CONTRACT: Input(str env_id) -> Output(None)
-    def delete_environment(self, env_id: str):
-        with belief_scope("ConfigManager.delete_environment"):
-            if not env_id or not isinstance(env_id, str):
-                raise ValueError("env_id must be a non-empty string")
-
-            logger.reason(f"Attempting to delete environment: {env_id}")
-            original_count = len(self.config.environments)
-            self.config.environments = [e for e in self.config.environments if e.id != env_id]
-
-            if len(self.config.environments) < original_count:
-                self.save()
-                logger.reflect(f"Environment {env_id} deleted and configuration saved")
-            else:
-                logger.explore(f"Environment {env_id} not found for deletion")
-    # [/DEF:delete_environment:Function]
-
-
 # [/DEF:ConfigManager:Class]
-# [/DEF:ConfigManagerModule:Module]
+# [/DEF:ConfigManager:Module]

backend/src/core/config_models.py

@@ -1,93 +1,93 @@
-# [DEF:ConfigModels:Module]
-# @TIER: STANDARD
-# @SEMANTICS: config, models, pydantic
-# @PURPOSE: Defines the data models for application configuration using Pydantic.
-# @LAYER: Core
-# @RELATION: READS_FROM -> app_configurations (database)
-# @RELATION: USED_BY -> ConfigManager
-
-from pydantic import BaseModel, Field
-from typing import List, Optional
-from ..models.storage import StorageConfig
-from ..services.llm_prompt_templates import (
-    DEFAULT_LLM_ASSISTANT_SETTINGS,
-    DEFAULT_LLM_PROMPTS,
-    DEFAULT_LLM_PROVIDER_BINDINGS,
-)
-
-# [DEF:Schedule:DataClass]
-# @PURPOSE: Represents a backup schedule configuration.
-class Schedule(BaseModel):
-    enabled: bool = False
-    cron_expression: str = "0 0 * * *"  # Default: daily at midnight
-# [/DEF:Schedule:DataClass]
-
-# [DEF:Environment:DataClass]
-# @PURPOSE: Represents a Superset environment configuration.
-class Environment(BaseModel):
-    id: str
-    name: str
-    url: str
-    username: str
-    password: str  # Will be masked in UI
-    stage: str = Field(default="DEV", pattern="^(DEV|PREPROD|PROD)$")
-    verify_ssl: bool = True
-    timeout: int = 30
-    is_default: bool = False
-    is_production: bool = False
-    backup_schedule: Schedule = Field(default_factory=Schedule)
-# [/DEF:Environment:DataClass]
-
-# [DEF:LoggingConfig:DataClass]
-# @PURPOSE: Defines the configuration for the application's logging system.
-class LoggingConfig(BaseModel):
-    level: str = "INFO"
-    task_log_level: str = "INFO"  # Minimum level for task-specific logs (DEBUG, INFO, WARNING, ERROR)
-    file_path: Optional[str] = None
-    max_bytes: int = 10 * 1024 * 1024
-    backup_count: int = 5
-    enable_belief_state: bool = True
-# [/DEF:LoggingConfig:DataClass]
-
-# [DEF:CleanReleaseConfig:DataClass]
-# @PURPOSE: Configuration for clean release compliance subsystem.
-class CleanReleaseConfig(BaseModel):
-    active_policy_id: Optional[str] = None
-    active_registry_id: Optional[str] = None
-# [/DEF:CleanReleaseConfig:DataClass]
-
-# [DEF:GlobalSettings:DataClass]
-# @PURPOSE: Represents global application settings.
-class GlobalSettings(BaseModel):
-    storage: StorageConfig = Field(default_factory=StorageConfig)
-    clean_release: CleanReleaseConfig = Field(default_factory=CleanReleaseConfig)
-    default_environment_id: Optional[str] = None
-    logging: LoggingConfig = Field(default_factory=LoggingConfig)
-    connections: List[dict] = []
-    llm: dict = Field(
-        default_factory=lambda: {
-            "providers": [],
-            "default_provider": "",
-            "prompts": dict(DEFAULT_LLM_PROMPTS),
-            "provider_bindings": dict(DEFAULT_LLM_PROVIDER_BINDINGS),
-            **dict(DEFAULT_LLM_ASSISTANT_SETTINGS),
-        }
-    )
-    
-    # Task retention settings
-    task_retention_days: int = 30
-    task_retention_limit: int = 100
-    pagination_limit: int = 10
-    
-    # Migration sync settings
-    migration_sync_cron: str = "0 2 * * *"
-# [/DEF:GlobalSettings:DataClass]
-
-# [DEF:AppConfig:DataClass]
-# @PURPOSE: The root configuration model containing all application settings.
-class AppConfig(BaseModel):
-    environments: List[Environment] = []
-    settings: GlobalSettings
-# [/DEF:AppConfig:DataClass]
-
-# [/DEF:ConfigModels:Module]
+# [DEF:backend.src.core.config_models:Module]
+# @COMPLEXITY: 3
+# @SEMANTICS: config, models, pydantic
+# @PURPOSE: Defines the data models for application configuration using Pydantic.
+# @LAYER: Core
+# @RELATION: READS_FROM -> app_configurations (database)
+# @RELATION: USED_BY -> ConfigManager
+
+from pydantic import BaseModel, Field
+from typing import List, Optional
+from ..models.storage import StorageConfig
+from ..services.llm_prompt_templates import (
+    DEFAULT_LLM_ASSISTANT_SETTINGS,
+    DEFAULT_LLM_PROMPTS,
+    DEFAULT_LLM_PROVIDER_BINDINGS,
+)
+
+# [DEF:Schedule:DataClass]
+# @PURPOSE: Represents a backup schedule configuration.
+class Schedule(BaseModel):
+    enabled: bool = False
+    cron_expression: str = "0 0 * * *"  # Default: daily at midnight
+# [/DEF:Schedule:DataClass]
+
+# [DEF:backend.src.core.config_models.Environment:DataClass]
+# @PURPOSE: Represents a Superset environment configuration.
+class Environment(BaseModel):
+    id: str
+    name: str
+    url: str
+    username: str
+    password: str  # Will be masked in UI
+    stage: str = Field(default="DEV", pattern="^(DEV|PREPROD|PROD)$")
+    verify_ssl: bool = True
+    timeout: int = 30
+    is_default: bool = False
+    is_production: bool = False
+    backup_schedule: Schedule = Field(default_factory=Schedule)
+# [/DEF:backend.src.core.config_models.Environment:DataClass]
+
+# [DEF:LoggingConfig:DataClass]
+# @PURPOSE: Defines the configuration for the application's logging system.
+class LoggingConfig(BaseModel):
+    level: str = "INFO"
+    task_log_level: str = "INFO"  # Minimum level for task-specific logs (DEBUG, INFO, WARNING, ERROR)
+    file_path: Optional[str] = None
+    max_bytes: int = 10 * 1024 * 1024
+    backup_count: int = 5
+    enable_belief_state: bool = True
+# [/DEF:LoggingConfig:DataClass]
+
+# [DEF:CleanReleaseConfig:DataClass]
+# @PURPOSE: Configuration for clean release compliance subsystem.
+class CleanReleaseConfig(BaseModel):
+    active_policy_id: Optional[str] = None
+    active_registry_id: Optional[str] = None
+# [/DEF:CleanReleaseConfig:DataClass]
+
+# [DEF:GlobalSettings:DataClass]
+# @PURPOSE: Represents global application settings.
+class GlobalSettings(BaseModel):
+    storage: StorageConfig = Field(default_factory=StorageConfig)
+    clean_release: CleanReleaseConfig = Field(default_factory=CleanReleaseConfig)
+    default_environment_id: Optional[str] = None
+    logging: LoggingConfig = Field(default_factory=LoggingConfig)
+    connections: List[dict] = []
+    llm: dict = Field(
+        default_factory=lambda: {
+            "providers": [],
+            "default_provider": "",
+            "prompts": dict(DEFAULT_LLM_PROMPTS),
+            "provider_bindings": dict(DEFAULT_LLM_PROVIDER_BINDINGS),
+            **dict(DEFAULT_LLM_ASSISTANT_SETTINGS),
+        }
+    )
+    
+    # Task retention settings
+    task_retention_days: int = 30
+    task_retention_limit: int = 100
+    pagination_limit: int = 10
+    
+    # Migration sync settings
+    migration_sync_cron: str = "0 2 * * *"
+# [/DEF:GlobalSettings:DataClass]
+
+# [DEF:AppConfig:DataClass]
+# @PURPOSE: The root configuration model containing all application settings.
+class AppConfig(BaseModel):
+    environments: List[Environment] = []
+    settings: GlobalSettings
+# [/DEF:AppConfig:DataClass]
+
+# [/DEF:ConfigModels:Module]

backend/src/core/database.py

@@ -1,12 +1,12 @@
 # [DEF:backend.src.core.database:Module]
 #
-# @TIER:      STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: database, postgresql, sqlalchemy, session, persistence
 # @PURPOSE:   Configures database connection and session management (PostgreSQL-first).
 # @LAYER:     Core
-# @RELATION:  DEPENDS_ON -> sqlalchemy
-# @RELATION:  DEPENDS_ON -> backend.src.models.mapping
-# @RELATION:  DEPENDS_ON -> backend.src.core.auth.config
+# @RELATION:  DEPENDS_ON ->[sqlalchemy]
+# @RELATION:  DEPENDS_ON ->[backend.src.models.mapping]
+# @RELATION:  DEPENDS_ON ->[backend.src.core.auth.config]
 #
 # @INVARIANT: A single engine instance is used for the entire application.
 
@@ -14,6 +14,7 @@
 from sqlalchemy import create_engine, inspect, text
 from sqlalchemy.orm import sessionmaker
 from ..models.mapping import Base
+from ..models.connection import ConnectionConfig
 # Import models to ensure they're registered with Base
 from ..models import task as _task_models  # noqa: F401
 from ..models import auth as _auth_models  # noqa: F401
@@ -22,6 +23,7 @@ from ..models import llm as _llm_models  # noqa: F401
 from ..models import assistant as _assistant_models  # noqa: F401
 from ..models import profile as _profile_models  # noqa: F401
 from ..models import clean_release as _clean_release_models  # noqa: F401
+from ..models import connection as _connection_models  # noqa: F401
 from .logger import belief_scope, logger
 from .auth.config import auth_config
 import os
@@ -29,11 +31,13 @@ from pathlib import Path
 # [/SECTION]
 
 # [DEF:BASE_DIR:Variable]
+# @COMPLEXITY: 1
 # @PURPOSE: Base directory for the backend.
 BASE_DIR = Path(__file__).resolve().parent.parent.parent
 # [/DEF:BASE_DIR:Variable]
 
 # [DEF:DATABASE_URL:Constant]
+# @COMPLEXITY: 1
 # @PURPOSE: URL for the main application database.
 DEFAULT_POSTGRES_URL = os.getenv(
     "POSTGRES_URL",
@@ -43,60 +47,66 @@ DATABASE_URL = os.getenv("DATABASE_URL", DEFAULT_POSTGRES_URL)
 # [/DEF:DATABASE_URL:Constant]
 
 # [DEF:TASKS_DATABASE_URL:Constant]
+# @COMPLEXITY: 1
 # @PURPOSE: URL for the tasks execution database.
 # Defaults to DATABASE_URL to keep task logs in the same PostgreSQL instance.
 TASKS_DATABASE_URL = os.getenv("TASKS_DATABASE_URL", DATABASE_URL)
 # [/DEF:TASKS_DATABASE_URL:Constant]
 
 # [DEF:AUTH_DATABASE_URL:Constant]
+# @COMPLEXITY: 1
 # @PURPOSE: URL for the authentication database.
 AUTH_DATABASE_URL = os.getenv("AUTH_DATABASE_URL", auth_config.AUTH_DATABASE_URL)
 # [/DEF:AUTH_DATABASE_URL:Constant]
 
 # [DEF:engine:Variable]
+# @COMPLEXITY: 1
+# @PURPOSE: SQLAlchemy engine for mappings database.
+# @SIDE_EFFECT: Creates database engine and manages connection pool.
 def _build_engine(db_url: str):
     with belief_scope("_build_engine"):
         if db_url.startswith("sqlite"):
             return create_engine(db_url, connect_args={"check_same_thread": False})
         return create_engine(db_url, pool_pre_ping=True)
 
-
-# @PURPOSE: SQLAlchemy engine for mappings database.
 engine = _build_engine(DATABASE_URL)
 # [/DEF:engine:Variable]
 
 # [DEF:tasks_engine:Variable]
+# @COMPLEXITY: 1
 # @PURPOSE: SQLAlchemy engine for tasks database.
 tasks_engine = _build_engine(TASKS_DATABASE_URL)
 # [/DEF:tasks_engine:Variable]
 
 # [DEF:auth_engine:Variable]
+# @COMPLEXITY: 1
 # @PURPOSE: SQLAlchemy engine for authentication database.
 auth_engine = _build_engine(AUTH_DATABASE_URL)
 # [/DEF:auth_engine:Variable]
 
 # [DEF:SessionLocal:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: A session factory for the main mappings database.
 # @PRE: engine is initialized.
 SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
 # [/DEF:SessionLocal:Class]
 
 # [DEF:TasksSessionLocal:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: A session factory for the tasks execution database.
 # @PRE: tasks_engine is initialized.
 TasksSessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=tasks_engine)
 # [/DEF:TasksSessionLocal:Class]
 
 # [DEF:AuthSessionLocal:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: A session factory for the authentication database.
 # @PRE: auth_engine is initialized.
 AuthSessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=auth_engine)
 # [/DEF:AuthSessionLocal:Class]
 
 # [DEF:_ensure_user_dashboard_preferences_columns:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Applies additive schema upgrades for user_dashboard_preferences table.
 # @PRE: bind_engine points to application database where profile table is stored.
 # @POST: Missing columns are added without data loss.
@@ -163,6 +173,7 @@ def _ensure_user_dashboard_preferences_columns(bind_engine):
 
 
 # [DEF:_ensure_user_dashboard_preferences_health_columns:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Applies additive schema upgrades for user_dashboard_preferences table (health fields).
 def _ensure_user_dashboard_preferences_health_columns(bind_engine):
     with belief_scope("_ensure_user_dashboard_preferences_health_columns"):
@@ -206,6 +217,7 @@ def _ensure_user_dashboard_preferences_health_columns(bind_engine):
 
 
 # [DEF:_ensure_llm_validation_results_columns:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Applies additive schema upgrades for llm_validation_results table.
 def _ensure_llm_validation_results_columns(bind_engine):
     with belief_scope("_ensure_llm_validation_results_columns"):
@@ -245,6 +257,7 @@ def _ensure_llm_validation_results_columns(bind_engine):
 
 
 # [DEF:_ensure_git_server_configs_columns:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Applies additive schema upgrades for git_server_configs table.
 # @PRE: bind_engine points to application database.
 # @POST: Missing columns are added without data loss.
@@ -281,7 +294,26 @@ def _ensure_git_server_configs_columns(bind_engine):
 # [/DEF:_ensure_git_server_configs_columns:Function]
 
 
+# [DEF:ensure_connection_configs_table:Function]
+# @COMPLEXITY: 3
+# @PURPOSE: Ensures the external connection registry table exists in the main database.
+# @PRE: bind_engine points to the application database.
+# @POST: connection_configs table exists without dropping existing data.
+def ensure_connection_configs_table(bind_engine):
+    with belief_scope("ensure_connection_configs_table"):
+        try:
+            ConnectionConfig.__table__.create(bind=bind_engine, checkfirst=True)
+        except Exception as migration_error:
+            logger.warning(
+                "[database][EXPLORE] ConnectionConfig table ensure failed: %s",
+                migration_error,
+            )
+            raise
+# [/DEF:ensure_connection_configs_table:Function]
+
+
 # [DEF:init_db:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Initializes the database by creating all tables.
 # @PRE: engine, tasks_engine and auth_engine are initialized.
 # @POST: Database tables created in all databases.
@@ -295,9 +327,11 @@ def init_db():
         _ensure_llm_validation_results_columns(engine)
         _ensure_user_dashboard_preferences_health_columns(engine)
         _ensure_git_server_configs_columns(engine)
+        ensure_connection_configs_table(engine)
 # [/DEF:init_db:Function]
 
 # [DEF:get_db:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Dependency for getting a database session.
 # @PRE: SessionLocal is initialized.
 # @POST:    Session is closed after use.
@@ -312,6 +346,7 @@ def get_db():
 # [/DEF:get_db:Function]
 
 # [DEF:get_tasks_db:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Dependency for getting a tasks database session.
 # @PRE: TasksSessionLocal is initialized.
 # @POST:    Session is closed after use.
@@ -326,10 +361,12 @@ def get_tasks_db():
 # [/DEF:get_tasks_db:Function]
 
 # [DEF:get_auth_db:Function]
+# @COMPLEXITY: 3
 # @PURPOSE: Dependency for getting an authentication database session.
 # @PRE: AuthSessionLocal is initialized.
-# @POST:    Session is closed after use.
-# @RETURN:  Generator[Session, None, None]
+# @POST: Session is closed after use.
+# @DATA_CONTRACT: None -> Output[sqlalchemy.orm.Session]
+# @RETURN: Generator[Session, None, None]
 def get_auth_db():
     with belief_scope("get_auth_db"):
         db = AuthSessionLocal()

backend/src/core/encryption_key.py

@@ -0,0 +1,56 @@
+# [DEF:backend.src.core.encryption_key:Module]
+# @COMPLEXITY: 5
+# @SEMANTICS: encryption, key, bootstrap, environment, startup
+# @PURPOSE: Resolve and persist the Fernet encryption key required by runtime services.
+# @LAYER: Infra
+# @RELATION: DEPENDS_ON -> backend.src.core.logger
+# @INVARIANT: Runtime key resolution never falls back to an ephemeral secret.
+
+from __future__ import annotations
+
+import os
+from pathlib import Path
+
+from cryptography.fernet import Fernet
+
+from .logger import logger, belief_scope
+
+DEFAULT_ENV_FILE_PATH = Path(__file__).resolve().parents[2] / ".env"
+
+
+# [DEF:ensure_encryption_key:Function]
+# @PURPOSE: Ensure backend runtime has a persistent valid Fernet key.
+# @PRE: env_file_path points to a writable backend .env file or ENCRYPTION_KEY exists in process environment.
+# @POST: Returns a valid Fernet key and guarantees it is present in process environment.
+# @SIDE_EFFECT: May create or append backend/.env when key is missing.
+def ensure_encryption_key(env_file_path: Path = DEFAULT_ENV_FILE_PATH) -> str:
+    with belief_scope("ensure_encryption_key", f"env_file_path={env_file_path}"):
+        existing_key = os.getenv("ENCRYPTION_KEY", "").strip()
+        if existing_key:
+            Fernet(existing_key.encode())
+            logger.reason("Using ENCRYPTION_KEY from process environment.")
+            return existing_key
+
+        if env_file_path.exists():
+            for raw_line in env_file_path.read_text(encoding="utf-8").splitlines():
+                if raw_line.startswith("ENCRYPTION_KEY="):
+                    persisted_key = raw_line.partition("=")[2].strip()
+                    if persisted_key:
+                        Fernet(persisted_key.encode())
+                        os.environ["ENCRYPTION_KEY"] = persisted_key
+                        logger.reason(f"Loaded ENCRYPTION_KEY from {env_file_path}.")
+                        return persisted_key
+
+        generated_key = Fernet.generate_key().decode()
+        with env_file_path.open("a", encoding="utf-8") as env_file:
+            if env_file.tell() > 0:
+                env_file.write("\n")
+            env_file.write(f"ENCRYPTION_KEY={generated_key}\n")
+
+        os.environ["ENCRYPTION_KEY"] = generated_key
+        logger.reason(f"Generated ENCRYPTION_KEY and persisted it to {env_file_path}.")
+        logger.reflect("Encryption key is available for runtime services.")
+        return generated_key
+# [/DEF:ensure_encryption_key:Function]
+
+# [/DEF:backend.src.core.encryption_key:Module]

backend/src/core/logger/__tests__/test_logger.py

@@ -1,5 +1,5 @@
 # [DEF:test_logger:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @PURPOSE: Unit tests for logger module
 # @LAYER: Infra
 # @RELATION: VERIFIES -> src.core.logger

backend/src/core/mapping_service.py

@@ -1,6 +1,6 @@
 # [DEF:backend.src.core.mapping_service:Module]
 #
-# @TIER:      CRITICAL
+# @COMPLEXITY: 5
 # @SEMANTICS: mapping, ids, synchronization, environments, cross-filters
 # @PURPOSE:   Service for tracking and synchronizing Superset Resource IDs (UUID <-> Integer ID)
 # @LAYER:     Core
@@ -21,7 +21,7 @@ from src.core.logger import logger, belief_scope
 # [/SECTION]
 
 # [DEF:IdMappingService:Class]
-# @TIER: CRITICAL
+# @COMPLEXITY: 5
 # @PURPOSE: Service handling the cataloging and retrieval of remote Superset Integer IDs.
 #
 # @TEST_CONTRACT: IdMappingServiceModel ->

backend/src/core/migration/__init__.py

@@ -1,5 +1,5 @@
 # [DEF:backend.src.core.migration.__init__:Module]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @SEMANTICS: migration, package, exports
 # @PURPOSE: Namespace package for migration pre-flight orchestration components.
 # @LAYER: Core

backend/src/core/migration/archive_parser.py

@@ -1,5 +1,5 @@
 # [DEF:backend.src.core.migration.archive_parser:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: migration, zip, parser, yaml, metadata
 # @PURPOSE: Parse Superset export ZIP archives into normalized object catalogs for diffing.
 # @LAYER: Core

backend/src/core/migration/dry_run_orchestrator.py

@@ -1,12 +1,12 @@
 # [DEF:backend.src.core.migration.dry_run_orchestrator:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: migration, dry_run, diff, risk, superset
 # @PURPOSE: Compute pre-flight migration diff and risk scoring without apply.
 # @LAYER: Core
-# @RELATION: DEPENDS_ON -> backend.src.core.superset_client
-# @RELATION: DEPENDS_ON -> backend.src.core.migration_engine
-# @RELATION: DEPENDS_ON -> backend.src.core.migration.archive_parser
-# @RELATION: DEPENDS_ON -> backend.src.core.migration.risk_assessor
+# @RELATION: DEPENDS_ON ->[backend.src.core.superset_client.SupersetClient]
+# @RELATION: DEPENDS_ON ->[backend.src.core.migration_engine.MigrationEngine]
+# @RELATION: DEPENDS_ON ->[backend.src.core.migration.archive_parser.MigrationArchiveParser]
+# @RELATION: DEPENDS_ON ->[backend.src.core.migration.risk_assessor]
 # @INVARIANT: Dry run is informative only and must not mutate target environment.
 
 from datetime import datetime, timezone

backend/src/core/migration/risk_assessor.py

@@ -1,5 +1,5 @@
 # [DEF:backend.src.core.migration.risk_assessor:Module]
-# @TIER: CRITICAL
+# @COMPLEXITY: 5
 # @SEMANTICS: migration, dry_run, risk, scoring, preflight
 # @PURPOSE: Compute deterministic migration risk items and aggregate score for dry-run reporting.
 # @LAYER: Domain

backend/src/core/migration_engine.py

@@ -1,6 +1,6 @@
 # [DEF:backend.src.core.migration_engine:Module]
 #
-# @TIER:      CRITICAL
+# @COMPLEXITY: 5
 # @SEMANTICS: migration, engine, zip, yaml, transformation, cross-filter, id-mapping
 # @PURPOSE:   Transforms Superset export ZIP archives while preserving archive integrity and patching mapped identifiers.
 # @LAYER:     Domain

backend/src/core/plugin_loader.py

@@ -1,192 +1,192 @@
-import importlib.util
-import os
-import sys # Added this line
-from typing import Dict, List, Optional
-from .plugin_base import PluginBase, PluginConfig
-from .logger import belief_scope
-
-# [DEF:PluginLoader:Class]
-# @TIER: STANDARD
-# @SEMANTICS: plugin, loader, dynamic, import
-# @PURPOSE: Scans a specified directory for Python modules, dynamically loads them, and registers any classes that are valid implementations of the PluginBase interface.
-# @LAYER: Core
-# @RELATION: Depends on PluginBase. It is used by the main application to discover and manage available plugins.
-class PluginLoader:
-    """
-    Scans a directory for Python modules, loads them, and identifies classes
-    that inherit from PluginBase.
-    """
-
-    # [DEF:__init__:Function]
-    # @PURPOSE: Initializes the PluginLoader with a directory to scan.
-    # @PRE:     plugin_dir is a valid directory path.
-    # @POST:    Plugins are loaded and registered.
-    # @PARAM: plugin_dir (str) - The directory containing plugin modules.
-    def __init__(self, plugin_dir: str):
-        with belief_scope("__init__"):
-            self.plugin_dir = plugin_dir
-            self._plugins: Dict[str, PluginBase] = {}
-            self._plugin_configs: Dict[str, PluginConfig] = {}
-            self._load_plugins()
-    # [/DEF:__init__:Function]
-
-    # [DEF:_load_plugins:Function]
-    # @PURPOSE: Scans the plugin directory and loads all valid plugins.
-    # @PRE:     plugin_dir exists or can be created.
-    # @POST:    _load_module is called for each .py file.
-    def _load_plugins(self):
-        with belief_scope("_load_plugins"):
-            """
-            Scans the plugin directory, imports modules, and registers valid plugins.
-            """
-        if not os.path.exists(self.plugin_dir):
-            os.makedirs(self.plugin_dir)
-
-        # Add the plugin directory's parent to sys.path to enable relative imports within plugins
-        # This assumes plugin_dir is something like 'backend/src/plugins'
-        # and we want 'backend/src' to be on the path for 'from ..core...' imports
-        plugin_parent_dir = os.path.abspath(os.path.join(self.plugin_dir, os.pardir))
-        if plugin_parent_dir not in sys.path:
-            sys.path.insert(0, plugin_parent_dir)
-
-        for filename in os.listdir(self.plugin_dir):
-            file_path = os.path.join(self.plugin_dir, filename)
-            
-            # Handle directory-based plugins (packages)
-            if os.path.isdir(file_path):
-                init_file = os.path.join(file_path, "__init__.py")
-                if os.path.exists(init_file):
-                    self._load_module(filename, init_file)
-                continue
-
-            # Handle single-file plugins
-            if filename.endswith(".py") and filename != "__init__.py":
-                module_name = filename[:-3]
-                self._load_module(module_name, file_path)
-    # [/DEF:_load_plugins:Function]
-
-    # [DEF:_load_module:Function]
-    # @PURPOSE: Loads a single Python module and discovers PluginBase implementations.
-    # @PRE:     module_name and file_path are valid.
-    # @POST:    Plugin classes are instantiated and registered.
-    # @PARAM: module_name (str) - The name of the module.
-    # @PARAM: file_path (str) - The path to the module file.
-    def _load_module(self, module_name: str, file_path: str):
-        with belief_scope("_load_module"):
-            """
-            Loads a single Python module and extracts PluginBase subclasses.
-            """
+import importlib.util
+import os
+import sys # Added this line
+from typing import Dict, List, Optional
+from .plugin_base import PluginBase, PluginConfig
+from .logger import belief_scope
+
+# [DEF:PluginLoader:Class]
+# @COMPLEXITY: 3
+# @SEMANTICS: plugin, loader, dynamic, import
+# @PURPOSE: Scans a specified directory for Python modules, dynamically loads them, and registers any classes that are valid implementations of the PluginBase interface.
+# @LAYER: Core
+# @RELATION: Depends on PluginBase. It is used by the main application to discover and manage available plugins.
+class PluginLoader:
+    """
+    Scans a directory for Python modules, loads them, and identifies classes
+    that inherit from PluginBase.
+    """
+
+    # [DEF:__init__:Function]
+    # @PURPOSE: Initializes the PluginLoader with a directory to scan.
+    # @PRE:     plugin_dir is a valid directory path.
+    # @POST:    Plugins are loaded and registered.
+    # @PARAM: plugin_dir (str) - The directory containing plugin modules.
+    def __init__(self, plugin_dir: str):
+        with belief_scope("__init__"):
+            self.plugin_dir = plugin_dir
+            self._plugins: Dict[str, PluginBase] = {}
+            self._plugin_configs: Dict[str, PluginConfig] = {}
+            self._load_plugins()
+    # [/DEF:__init__:Function]
+
+    # [DEF:_load_plugins:Function]
+    # @PURPOSE: Scans the plugin directory and loads all valid plugins.
+    # @PRE:     plugin_dir exists or can be created.
+    # @POST:    _load_module is called for each .py file.
+    def _load_plugins(self):
+        with belief_scope("_load_plugins"):
+            """
+            Scans the plugin directory, imports modules, and registers valid plugins.
+            """
+        if not os.path.exists(self.plugin_dir):
+            os.makedirs(self.plugin_dir)
+
+        # Add the plugin directory's parent to sys.path to enable relative imports within plugins
+        # This assumes plugin_dir is something like 'backend/src/plugins'
+        # and we want 'backend/src' to be on the path for 'from ..core...' imports
+        plugin_parent_dir = os.path.abspath(os.path.join(self.plugin_dir, os.pardir))
+        if plugin_parent_dir not in sys.path:
+            sys.path.insert(0, plugin_parent_dir)
+
+        for filename in os.listdir(self.plugin_dir):
+            file_path = os.path.join(self.plugin_dir, filename)
+            
+            # Handle directory-based plugins (packages)
+            if os.path.isdir(file_path):
+                init_file = os.path.join(file_path, "__init__.py")
+                if os.path.exists(init_file):
+                    self._load_module(filename, init_file)
+                continue
+
+            # Handle single-file plugins
+            if filename.endswith(".py") and filename != "__init__.py":
+                module_name = filename[:-3]
+                self._load_module(module_name, file_path)
+    # [/DEF:_load_plugins:Function]
+
+    # [DEF:_load_module:Function]
+    # @PURPOSE: Loads a single Python module and discovers PluginBase implementations.
+    # @PRE:     module_name and file_path are valid.
+    # @POST:    Plugin classes are instantiated and registered.
+    # @PARAM: module_name (str) - The name of the module.
+    # @PARAM: file_path (str) - The path to the module file.
+    def _load_module(self, module_name: str, file_path: str):
+        with belief_scope("_load_module"):
+            """
+            Loads a single Python module and extracts PluginBase subclasses.
+            """
         # All runtime code is imported through the canonical `src` package root.
         package_name = f"src.plugins.{module_name}"
-            
-        # print(f"DEBUG: Loading plugin {module_name} as {package_name}")
-        spec = importlib.util.spec_from_file_location(package_name, file_path)
-        if spec is None or spec.loader is None:
-            print(f"Could not load module spec for {package_name}") # Replace with proper logging
-            return
-
-        module = importlib.util.module_from_spec(spec)
-        try:
-            spec.loader.exec_module(module)
-        except Exception as e:
-            print(f"Error loading plugin module {module_name}: {e}") # Replace with proper logging
-            return
-
-        for attribute_name in dir(module):
-            attribute = getattr(module, attribute_name)
-            if (
-                isinstance(attribute, type)
-                and issubclass(attribute, PluginBase)
-                and attribute is not PluginBase
-            ):
-                try:
-                    plugin_instance = attribute()
-                    self._register_plugin(plugin_instance)
-                except Exception as e:
-                    print(f"Error instantiating plugin {attribute_name} in {module_name}: {e}") # Replace with proper logging
-    # [/DEF:_load_module:Function]
-
-    # [DEF:_register_plugin:Function]
-    # @PURPOSE: Registers a PluginBase instance and its configuration.
-    # @PRE:     plugin_instance is a valid implementation of PluginBase.
-    # @POST:    Plugin is added to _plugins and _plugin_configs.
-    # @PARAM: plugin_instance (PluginBase) - The plugin instance to register.
-    def _register_plugin(self, plugin_instance: PluginBase):
-        with belief_scope("_register_plugin"):
-            """
-            Registers a valid plugin instance.
-            """
-        plugin_id = plugin_instance.id
-        if plugin_id in self._plugins:
-            print(f"Warning: Duplicate plugin ID '{plugin_id}' found. Skipping.") # Replace with proper logging
-            return
-
-        try:
-            schema = plugin_instance.get_schema()
-            # Basic validation to ensure it's a dictionary
-            if not isinstance(schema, dict):
-                raise TypeError("get_schema() must return a dictionary.")
-                
-            plugin_config = PluginConfig(
-                id=plugin_instance.id,
-                name=plugin_instance.name,
-                description=plugin_instance.description,
-                version=plugin_instance.version,
-                ui_route=plugin_instance.ui_route,
-                schema=schema,
-            )
-            # The following line is commented out because it requires a schema to be passed to validate against.
-            # The schema provided by the plugin is the one being validated, not the data.
-            # validate(instance={}, schema=schema)
-            self._plugins[plugin_id] = plugin_instance
-            self._plugin_configs[plugin_id] = plugin_config
-            from ..core.logger import logger
-            logger.info(f"Plugin '{plugin_instance.name}' (ID: {plugin_id}) loaded successfully.")
-        except Exception as e:
-            from ..core.logger import logger
-            logger.error(f"Error validating plugin '{plugin_instance.name}' (ID: {plugin_id}): {e}")
-    # [/DEF:_register_plugin:Function]
-
-
-    # [DEF:get_plugin:Function]
-    # @PURPOSE: Retrieves a loaded plugin instance by its ID.
-    # @PRE:     plugin_id is a string.
-    # @POST:    Returns plugin instance or None.
-    # @PARAM: plugin_id (str) - The unique identifier of the plugin.
-    # @RETURN: Optional[PluginBase] - The plugin instance if found, otherwise None.
-    def get_plugin(self, plugin_id: str) -> Optional[PluginBase]:
-        with belief_scope("get_plugin"):
-            """
-            Returns a loaded plugin instance by its ID.
-            """
-        return self._plugins.get(plugin_id)
-    # [/DEF:get_plugin:Function]
-
-    # [DEF:get_all_plugin_configs:Function]
-    # @PURPOSE: Returns a list of all registered plugin configurations.
-    # @PRE:     None.
-    # @POST:    Returns list of all PluginConfig objects.
-    # @RETURN: List[PluginConfig] - A list of plugin configurations.
-    def get_all_plugin_configs(self) -> List[PluginConfig]:
-        with belief_scope("get_all_plugin_configs"):
-            """
-            Returns a list of all loaded plugin configurations.
-            """
-        return list(self._plugin_configs.values())
-    # [/DEF:get_all_plugin_configs:Function]
-
-    # [DEF:has_plugin:Function]
-    # @PURPOSE: Checks if a plugin with the given ID is registered.
-    # @PRE:     plugin_id is a string.
-    # @POST:    Returns True if plugin exists.
-    # @PARAM: plugin_id (str) - The unique identifier of the plugin.
-    # @RETURN: bool - True if the plugin is registered, False otherwise.
-    def has_plugin(self, plugin_id: str) -> bool:
-        with belief_scope("has_plugin"):
-            """
-            Checks if a plugin with the given ID is loaded.
-            """
-        return plugin_id in self._plugins
-    # [/DEF:has_plugin:Function]
-
+            
+        # print(f"DEBUG: Loading plugin {module_name} as {package_name}")
+        spec = importlib.util.spec_from_file_location(package_name, file_path)
+        if spec is None or spec.loader is None:
+            print(f"Could not load module spec for {package_name}") # Replace with proper logging
+            return
+
+        module = importlib.util.module_from_spec(spec)
+        try:
+            spec.loader.exec_module(module)
+        except Exception as e:
+            print(f"Error loading plugin module {module_name}: {e}") # Replace with proper logging
+            return
+
+        for attribute_name in dir(module):
+            attribute = getattr(module, attribute_name)
+            if (
+                isinstance(attribute, type)
+                and issubclass(attribute, PluginBase)
+                and attribute is not PluginBase
+            ):
+                try:
+                    plugin_instance = attribute()
+                    self._register_plugin(plugin_instance)
+                except Exception as e:
+                    print(f"Error instantiating plugin {attribute_name} in {module_name}: {e}") # Replace with proper logging
+    # [/DEF:_load_module:Function]
+
+    # [DEF:_register_plugin:Function]
+    # @PURPOSE: Registers a PluginBase instance and its configuration.
+    # @PRE:     plugin_instance is a valid implementation of PluginBase.
+    # @POST:    Plugin is added to _plugins and _plugin_configs.
+    # @PARAM: plugin_instance (PluginBase) - The plugin instance to register.
+    def _register_plugin(self, plugin_instance: PluginBase):
+        with belief_scope("_register_plugin"):
+            """
+            Registers a valid plugin instance.
+            """
+        plugin_id = plugin_instance.id
+        if plugin_id in self._plugins:
+            print(f"Warning: Duplicate plugin ID '{plugin_id}' found. Skipping.") # Replace with proper logging
+            return
+
+        try:
+            schema = plugin_instance.get_schema()
+            # Basic validation to ensure it's a dictionary
+            if not isinstance(schema, dict):
+                raise TypeError("get_schema() must return a dictionary.")
+                
+            plugin_config = PluginConfig(
+                id=plugin_instance.id,
+                name=plugin_instance.name,
+                description=plugin_instance.description,
+                version=plugin_instance.version,
+                ui_route=plugin_instance.ui_route,
+                schema=schema,
+            )
+            # The following line is commented out because it requires a schema to be passed to validate against.
+            # The schema provided by the plugin is the one being validated, not the data.
+            # validate(instance={}, schema=schema)
+            self._plugins[plugin_id] = plugin_instance
+            self._plugin_configs[plugin_id] = plugin_config
+            from ..core.logger import logger
+            logger.info(f"Plugin '{plugin_instance.name}' (ID: {plugin_id}) loaded successfully.")
+        except Exception as e:
+            from ..core.logger import logger
+            logger.error(f"Error validating plugin '{plugin_instance.name}' (ID: {plugin_id}): {e}")
+    # [/DEF:_register_plugin:Function]
+
+
+    # [DEF:get_plugin:Function]
+    # @PURPOSE: Retrieves a loaded plugin instance by its ID.
+    # @PRE:     plugin_id is a string.
+    # @POST:    Returns plugin instance or None.
+    # @PARAM: plugin_id (str) - The unique identifier of the plugin.
+    # @RETURN: Optional[PluginBase] - The plugin instance if found, otherwise None.
+    def get_plugin(self, plugin_id: str) -> Optional[PluginBase]:
+        with belief_scope("get_plugin"):
+            """
+            Returns a loaded plugin instance by its ID.
+            """
+        return self._plugins.get(plugin_id)
+    # [/DEF:get_plugin:Function]
+
+    # [DEF:get_all_plugin_configs:Function]
+    # @PURPOSE: Returns a list of all registered plugin configurations.
+    # @PRE:     None.
+    # @POST:    Returns list of all PluginConfig objects.
+    # @RETURN: List[PluginConfig] - A list of plugin configurations.
+    def get_all_plugin_configs(self) -> List[PluginConfig]:
+        with belief_scope("get_all_plugin_configs"):
+            """
+            Returns a list of all loaded plugin configurations.
+            """
+        return list(self._plugin_configs.values())
+    # [/DEF:get_all_plugin_configs:Function]
+
+    # [DEF:has_plugin:Function]
+    # @PURPOSE: Checks if a plugin with the given ID is registered.
+    # @PRE:     plugin_id is a string.
+    # @POST:    Returns True if plugin exists.
+    # @PARAM: plugin_id (str) - The unique identifier of the plugin.
+    # @RETURN: bool - True if the plugin is registered, False otherwise.
+    def has_plugin(self, plugin_id: str) -> bool:
+        with belief_scope("has_plugin"):
+            """
+            Checks if a plugin with the given ID is loaded.
+            """
+        return plugin_id in self._plugins
+    # [/DEF:has_plugin:Function]
+
 # [/DEF:PluginLoader:Class]

backend/src/core/scheduler.py

@@ -1,5 +1,5 @@
 # [DEF:SchedulerModule:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: scheduler, apscheduler, cron, backup
 # @PURPOSE: Manages scheduled tasks using APScheduler.
 # @LAYER: Core
@@ -18,7 +18,7 @@ from datetime import datetime, time, timedelta, date
 # [/SECTION]
 
 # [DEF:SchedulerService:Class]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: scheduler, service, apscheduler
 # @PURPOSE: Provides a service to manage scheduled backup tasks.
 class SchedulerService:
@@ -123,7 +123,7 @@ class SchedulerService:
 # [/DEF:SchedulerService:Class]
 
 # [DEF:ThrottledSchedulerConfigurator:Class]
-# @TIER: CRITICAL
+# @COMPLEXITY: 5
 # @SEMANTICS: scheduler, throttling, distribution
 # @PURPOSE: Distributes validation tasks evenly within an execution window.
 class ThrottledSchedulerConfigurator:

backend/src/core/superset_client.py

@@ -1,5 +1,6 @@
 # [DEF:backend.src.core.superset_client:Module]
 #
+# @COMPLEXITY: 3
 # @SEMANTICS: superset, api, client, rest, http, dashboard, dataset, import, export
 # @PURPOSE:   Предоставляет высокоуровневый клиент для взаимодействия с Superset REST API, инкапсулируя логику запросов, обработку ошибок и пагинацию.
 # @LAYER:     Core
@@ -23,14 +24,18 @@ from .utils.fileio import get_filename_from_headers
 from .config_models import Environment
 # [/SECTION]
 
-# [DEF:SupersetClient:Class]
+# [DEF:backend.src.core.superset_client.SupersetClient:Class]
+# @COMPLEXITY: 3
 # @PURPOSE: Класс-обёртка над Superset REST API, предоставляющий методы для работы с дашбордами и датасетами.
+# @RELATION: [DEPENDS_ON] ->[backend.src.core.utils.network.APIClient]
+# @RELATION: [DEPENDS_ON] ->[backend.src.core.config_models.Environment]
 class SupersetClient:
-    # [DEF:__init__:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.__init__:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Инициализирует клиент, проверяет конфигурацию и создает сетевой клиент.
     # @PRE:  `env` должен быть валидным объектом Environment.
     # @POST: Атрибуты `env` и `network` созданы и готовы к работе.
-    # @PARAM: env (Environment) - Конфигурация окружения.
+    # @DATA_CONTRACT: Input[Environment] -> self.network[APIClient]
     def __init__(self, env: Environment):
         with belief_scope("__init__"):
             app_logger.info("[SupersetClient.__init__][Enter] Initializing SupersetClient for env %s.", env.name)
@@ -54,18 +59,21 @@ class SupersetClient:
         app_logger.info("[SupersetClient.__init__][Exit] SupersetClient initialized.")
     # [/DEF:__init__:Function]
 
-    # [DEF:authenticate:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.authenticate:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Authenticates the client using the configured credentials.
     # @PRE: self.network must be initialized with valid auth configuration.
     # @POST: Client is authenticated and tokens are stored.
-    # @RETURN: Dict[str, str] - Authentication tokens.
+    # @DATA_CONTRACT: None -> Output[Dict[str, str]]
+    # @RELATION: [CALLS] ->[self.network.authenticate]
     def authenticate(self) -> Dict[str, str]:
         with belief_scope("SupersetClient.authenticate"):
             return self.network.authenticate()
     # [/DEF:authenticate:Function]
 
     @property
-    # [DEF:headers:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.headers:Function]
+    # @COMPLEXITY: 1
     # @PURPOSE: Возвращает базовые HTTP-заголовки, используемые сетевым клиентом.
     # @PRE: APIClient is initialized and authenticated.
     # @POST: Returns a dictionary of HTTP headers.
@@ -76,12 +84,13 @@ class SupersetClient:
 
     # [SECTION: DASHBOARD OPERATIONS]
 
-    # [DEF:get_dashboards:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.get_dashboards:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Получает полный список дашбордов, автоматически обрабатывая пагинацию.
-    # @PARAM: query (Optional[Dict]) - Дополнительные параметры запроса для API.
     # @PRE: Client is authenticated.
     # @POST: Returns a tuple with total count and list of dashboards.
-    # @RETURN: Tuple[int, List[Dict]] - Кортеж (общее количество, список дашбордов).
+    # @DATA_CONTRACT: Input[query: Optional[Dict]] -> Output[Tuple[int, List[Dict]]]
+    # @RELATION: [CALLS] ->[self._fetch_all_pages]
     def get_dashboards(self, query: Optional[Dict] = None) -> Tuple[int, List[Dict]]:
         with belief_scope("get_dashboards"):
             app_logger.info("[get_dashboards][Enter] Fetching dashboards.")
@@ -109,12 +118,13 @@ class SupersetClient:
             return total_count, paginated_data
     # [/DEF:get_dashboards:Function]
 
-    # [DEF:get_dashboards_page:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.get_dashboards_page:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Fetches a single dashboards page from Superset without iterating all pages.
-    # @PARAM: query (Optional[Dict]) - Query with page/page_size and optional columns.
     # @PRE: Client is authenticated.
     # @POST: Returns total count and one page of dashboards.
-    # @RETURN: Tuple[int, List[Dict]]
+    # @DATA_CONTRACT: Input[query: Optional[Dict]] -> Output[Tuple[int, List[Dict]]]
+    # @RELATION: [CALLS] ->[self.network.request]
     def get_dashboards_page(self, query: Optional[Dict] = None) -> Tuple[int, List[Dict]]:
         with belief_scope("get_dashboards_page"):
             validated_query = self._validate_query_params(query or {})
@@ -145,11 +155,13 @@ class SupersetClient:
             return total_count, result
     # [/DEF:get_dashboards_page:Function]
 
-    # [DEF:get_dashboards_summary:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.get_dashboards_summary:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Fetches dashboard metadata optimized for the grid.
     # @PRE: Client is authenticated.
     # @POST: Returns a list of dashboard metadata summaries.
-    # @RETURN: List[Dict]
+    # @DATA_CONTRACT: None -> Output[List[Dict]]
+    # @RELATION: [CALLS] ->[self.get_dashboards]
     def get_dashboards_summary(self, require_slug: bool = False) -> List[Dict]:
         with belief_scope("SupersetClient.get_dashboards_summary"):
             # Rely on list endpoint default projection to stay compatible
@@ -228,13 +240,13 @@ class SupersetClient:
             return result
     # [/DEF:get_dashboards_summary:Function]
 
-    # [DEF:get_dashboards_summary_page:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.get_dashboards_summary_page:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Fetches one page of dashboard metadata optimized for the grid.
-    # @PARAM: page (int) - 1-based page number from API route contract.
-    # @PARAM: page_size (int) - Number of items per page.
     # @PRE: page >= 1 and page_size > 0.
     # @POST: Returns mapped summaries and total dashboard count.
-    # @RETURN: Tuple[int, List[Dict]]
+    # @DATA_CONTRACT: Input[page: int, page_size: int] -> Output[Tuple[int, List[Dict]]]
+    # @RELATION: [CALLS] ->[self.get_dashboards_page]
     def get_dashboards_summary_page(
         self,
         page: int,
@@ -301,11 +313,12 @@ class SupersetClient:
             return total_count, result
     # [/DEF:get_dashboards_summary_page:Function]
 
-    # [DEF:_extract_owner_labels:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient._extract_owner_labels:Function]
+    # @COMPLEXITY: 1
     # @PURPOSE: Normalize dashboard owners payload to stable display labels.
     # @PRE: owners payload can be scalar, object or list.
     # @POST: Returns deduplicated non-empty owner labels preserving order.
-    # @RETURN: List[str]
+    # @DATA_CONTRACT: Input[Any] -> Output[List[str]]
     def _extract_owner_labels(self, owners_payload: Any) -> List[str]:
         if owners_payload is None:
             return []
@@ -328,11 +341,12 @@ class SupersetClient:
         return normalized
     # [/DEF:_extract_owner_labels:Function]
 
-    # [DEF:_extract_user_display:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient._extract_user_display:Function]
+    # @COMPLEXITY: 1
     # @PURPOSE: Normalize user payload to a stable display name.
     # @PRE: user payload can be string, dict or None.
     # @POST: Returns compact non-empty display value or None.
-    # @RETURN: Optional[str]
+    # @DATA_CONTRACT: Input[Optional[str], Optional[Dict]] -> Output[Optional[str]]
     def _extract_user_display(self, preferred_value: Optional[str], user_payload: Optional[Dict]) -> Optional[str]:
         preferred = self._sanitize_user_text(preferred_value)
         if preferred:
@@ -356,11 +370,11 @@ class SupersetClient:
         return None
     # [/DEF:_extract_user_display:Function]
 
-    # [DEF:_sanitize_user_text:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient._sanitize_user_text:Function]
+    # @COMPLEXITY: 1
     # @PURPOSE: Convert scalar value to non-empty user-facing text.
     # @PRE: value can be any scalar type.
     # @POST: Returns trimmed string or None.
-    # @RETURN: Optional[str]
     def _sanitize_user_text(self, value: Optional[Union[str, int]]) -> Optional[str]:
         if value is None:
             return None
@@ -370,33 +384,40 @@ class SupersetClient:
         return normalized
     # [/DEF:_sanitize_user_text:Function]
 
-    # [DEF:get_dashboard:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.get_dashboard:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Fetches a single dashboard by ID.
     # @PRE: Client is authenticated and dashboard_id exists.
     # @POST: Returns dashboard payload from Superset API.
-    # @RETURN: Dict
+    # @DATA_CONTRACT: Input[dashboard_id: int] -> Output[Dict]
+    # @RELATION: [CALLS] ->[self.network.request]
     def get_dashboard(self, dashboard_id: int) -> Dict:
         with belief_scope("SupersetClient.get_dashboard", f"id={dashboard_id}"):
             response = self.network.request(method="GET", endpoint=f"/dashboard/{dashboard_id}")
             return cast(Dict, response)
     # [/DEF:get_dashboard:Function]
 
-    # [DEF:get_chart:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.get_chart:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Fetches a single chart by ID.
     # @PRE: Client is authenticated and chart_id exists.
     # @POST: Returns chart payload from Superset API.
-    # @RETURN: Dict
+    # @DATA_CONTRACT: Input[chart_id: int] -> Output[Dict]
+    # @RELATION: [CALLS] ->[self.network.request]
     def get_chart(self, chart_id: int) -> Dict:
         with belief_scope("SupersetClient.get_chart", f"id={chart_id}"):
             response = self.network.request(method="GET", endpoint=f"/chart/{chart_id}")
             return cast(Dict, response)
     # [/DEF:get_chart:Function]
 
-    # [DEF:get_dashboard_detail:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.get_dashboard_detail:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Fetches detailed dashboard information including related charts and datasets.
     # @PRE: Client is authenticated and dashboard_id exists.
     # @POST: Returns dashboard metadata with charts and datasets lists.
-    # @RETURN: Dict
+    # @DATA_CONTRACT: Input[dashboard_id: int] -> Output[Dict]
+    # @RELATION: [CALLS] ->[self.get_dashboard]
+    # @RELATION: [CALLS] ->[self.get_chart]
     def get_dashboard_detail(self, dashboard_id: int) -> Dict:
         with belief_scope("SupersetClient.get_dashboard_detail", f"id={dashboard_id}"):
             dashboard_response = self.get_dashboard(dashboard_id)
@@ -584,12 +605,13 @@ class SupersetClient:
             }
     # [/DEF:get_dashboard_detail:Function]
 
-    # [DEF:get_charts:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.get_charts:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Fetches all charts with pagination support.
-    # @PARAM: query (Optional[Dict]) - Optional query params/columns/filters.
     # @PRE: Client is authenticated.
     # @POST: Returns total count and charts list.
-    # @RETURN: Tuple[int, List[Dict]]
+    # @DATA_CONTRACT: Input[query: Optional[Dict]] -> Output[Tuple[int, List[Dict]]]
+    # @RELATION: [CALLS] ->[self._fetch_all_pages]
     def get_charts(self, query: Optional[Dict] = None) -> Tuple[int, List[Dict]]:
         with belief_scope("get_charts"):
             validated_query = self._validate_query_params(query or {})
@@ -603,7 +625,8 @@ class SupersetClient:
             return len(paginated_data), paginated_data
     # [/DEF:get_charts:Function]
 
-    # [DEF:_extract_chart_ids_from_layout:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient._extract_chart_ids_from_layout:Function]
+    # @COMPLEXITY: 1
     # @PURPOSE: Traverses dashboard layout metadata and extracts chart IDs from common keys.
     # @PRE: payload can be dict/list/scalar.
     # @POST: Returns a set of chart IDs found in nested structures.
@@ -635,12 +658,14 @@ class SupersetClient:
             return found
     # [/DEF:_extract_chart_ids_from_layout:Function]
 
-    # [DEF:export_dashboard:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.export_dashboard:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Экспортирует дашборд в виде ZIP-архива.
-    # @PARAM: dashboard_id (int) - ID дашборда для экспорта.
     # @PRE: dashboard_id must exist in Superset.
     # @POST: Returns ZIP content and filename.
-    # @RETURN: Tuple[bytes, str] - Бинарное содержимое ZIP-архива и имя файла.
+    # @DATA_CONTRACT: Input[dashboard_id: int] -> Output[Tuple[bytes, str]]
+    # @SIDE_EFFECT: Performs network I/O to download archive.
+    # @RELATION: [CALLS] ->[self.network.request]
     def export_dashboard(self, dashboard_id: int) -> Tuple[bytes, str]:
         with belief_scope("export_dashboard"):
             app_logger.info("[export_dashboard][Enter] Exporting dashboard %s.", dashboard_id)
@@ -658,14 +683,15 @@ class SupersetClient:
             return response.content, filename
     # [/DEF:export_dashboard:Function]
 
-    # [DEF:import_dashboard:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.import_dashboard:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Импортирует дашборд из ZIP-файла.
-    # @PARAM: file_name (Union[str, Path]) - Путь к ZIP-архиву.
-    # @PARAM: dash_id (Optional[int]) - ID дашборда для удаления при сбое.
-    # @PARAM: dash_slug (Optional[str]) - Slug дашборда для поиска ID.
     # @PRE: file_name must be a valid ZIP dashboard export.
     # @POST: Dashboard is imported or re-imported after deletion.
-    # @RETURN: Dict - Ответ API в случае успеха.
+    # @DATA_CONTRACT: Input[file_name: Union[str, Path]] -> Output[Dict]
+    # @SIDE_EFFECT: Performs network I/O to upload archive.
+    # @RELATION: [CALLS] ->[self._do_import]
+    # @RELATION: [CALLS] ->[self.delete_dashboard]
     def import_dashboard(self, file_name: Union[str, Path], dash_id: Optional[int] = None, dash_slug: Optional[str] = None) -> Dict:
         with belief_scope("import_dashboard"):
             if file_name is None:
@@ -689,11 +715,13 @@ class SupersetClient:
                 return self._do_import(file_path)
     # [/DEF:import_dashboard:Function]
 
-    # [DEF:delete_dashboard:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.delete_dashboard:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Удаляет дашборд по его ID или slug.
-    # @PARAM: dashboard_id (Union[int, str]) - ID или slug дашборда.
     # @PRE: dashboard_id must exist.
     # @POST: Dashboard is removed from Superset.
+    # @SIDE_EFFECT: Deletes resource from upstream Superset environment.
+    # @RELATION: [CALLS] ->[self.network.request]
     def delete_dashboard(self, dashboard_id: Union[int, str]) -> None:
         with belief_scope("delete_dashboard"):
             app_logger.info("[delete_dashboard][Enter] Deleting dashboard %s.", dashboard_id)
@@ -709,12 +737,13 @@ class SupersetClient:
 
     # [SECTION: DATASET OPERATIONS]
 
-    # [DEF:get_datasets:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.get_datasets:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Получает полный список датасетов, автоматически обрабатывая пагинацию.
-    # @PARAM: query (Optional[Dict]) - Дополнительные параметры запроса.
     # @PRE: Client is authenticated.
     # @POST: Returns total count and list of datasets.
-    # @RETURN: Tuple[int, List[Dict]] - Кортеж (общее количество, список датасетов).
+    # @DATA_CONTRACT: Input[query: Optional[Dict]] -> Output[Tuple[int, List[Dict]]]
+    # @RELATION: [CALLS] ->[self._fetch_all_pages]
     def get_datasets(self, query: Optional[Dict] = None) -> Tuple[int, List[Dict]]:
         with belief_scope("get_datasets"):
             app_logger.info("[get_datasets][Enter] Fetching datasets.")
@@ -729,7 +758,8 @@ class SupersetClient:
             return total_count, paginated_data
     # [/DEF:get_datasets:Function]
 
-    # [DEF:get_datasets_summary:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.get_datasets_summary:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Fetches dataset metadata optimized for the Dataset Hub grid.
     # @PRE: Client is authenticated.
     # @POST: Returns a list of dataset metadata summaries.
@@ -753,7 +783,8 @@ class SupersetClient:
             return result
     # [/DEF:get_datasets_summary:Function]
 
-    # [DEF:get_dataset_detail:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.get_dataset_detail:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Fetches detailed dataset information including columns and linked dashboards
     # @PRE: Client is authenticated and dataset_id exists.
     # @POST: Returns detailed dataset info with columns and linked dashboards.
@@ -865,12 +896,13 @@ class SupersetClient:
             return result
     # [/DEF:get_dataset_detail:Function]
 
-    # [DEF:get_dataset:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.get_dataset:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Получает информацию о конкретном датасете по его ID.
-    # @PARAM: dataset_id (int) - ID датасета.
     # @PRE: dataset_id must exist.
     # @POST: Returns dataset details.
-    # @RETURN: Dict - Информация о датасете.
+    # @DATA_CONTRACT: Input[dataset_id: int] -> Output[Dict]
+    # @RELATION: [CALLS] ->[self.network.request]
     def get_dataset(self, dataset_id: int) -> Dict:
         with belief_scope("SupersetClient.get_dataset", f"id={dataset_id}"):
             app_logger.info("[get_dataset][Enter] Fetching dataset %s.", dataset_id)
@@ -880,13 +912,14 @@ class SupersetClient:
             return response
     # [/DEF:get_dataset:Function]
 
-    # [DEF:update_dataset:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.update_dataset:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Обновляет данные датасета по его ID.
-    # @PARAM: dataset_id (int) - ID датасета.
-    # @PARAM: data (Dict) - Данные для обновления.
     # @PRE: dataset_id must exist.
     # @POST: Dataset is updated in Superset.
-    # @RETURN: Dict - Ответ API.
+    # @DATA_CONTRACT: Input[dataset_id: int, data: Dict] -> Output[Dict]
+    # @SIDE_EFFECT: Modifies resource in upstream Superset environment.
+    # @RELATION: [CALLS] ->[self.network.request]
     def update_dataset(self, dataset_id: int, data: Dict) -> Dict:
         with belief_scope("SupersetClient.update_dataset", f"id={dataset_id}"):
             app_logger.info("[update_dataset][Enter] Updating dataset %s.", dataset_id)
@@ -905,12 +938,13 @@ class SupersetClient:
 
     # [SECTION: DATABASE OPERATIONS]
 
-    # [DEF:get_databases:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.get_databases:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Получает полный список баз данных.
-    # @PARAM: query (Optional[Dict]) - Дополнительные параметры запроса.
     # @PRE: Client is authenticated.
     # @POST: Returns total count and list of databases.
-    # @RETURN: Tuple[int, List[Dict]] - Кортеж (общее количество, список баз данных).
+    # @DATA_CONTRACT: Input[query: Optional[Dict]] -> Output[Tuple[int, List[Dict]]]
+    # @RELATION: [CALLS] ->[self._fetch_all_pages]
     def get_databases(self, query: Optional[Dict] = None) -> Tuple[int, List[Dict]]:
         with belief_scope("get_databases"):
             app_logger.info("[get_databases][Enter] Fetching databases.")
@@ -927,12 +961,13 @@ class SupersetClient:
             return total_count, paginated_data
     # [/DEF:get_databases:Function]
 
-    # [DEF:get_database:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.get_database:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Получает информацию о конкретной базе данных по её ID.
-    # @PARAM: database_id (int) - ID базы данных.
     # @PRE: database_id must exist.
     # @POST: Returns database details.
-    # @RETURN: Dict - Информация о базе данных.
+    # @DATA_CONTRACT: Input[database_id: int] -> Output[Dict]
+    # @RELATION: [CALLS] ->[self.network.request]
     def get_database(self, database_id: int) -> Dict:
         with belief_scope("get_database"):
             app_logger.info("[get_database][Enter] Fetching database %s.", database_id)
@@ -942,11 +977,13 @@ class SupersetClient:
             return response
     # [/DEF:get_database:Function]
 
-    # [DEF:get_databases_summary:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.get_databases_summary:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Fetch a summary of databases including uuid, name, and engine.
     # @PRE: Client is authenticated.
     # @POST: Returns list of database summaries.
-    # @RETURN: List[Dict] - Summary of databases.
+    # @DATA_CONTRACT: None -> Output[List[Dict]]
+    # @RELATION: [CALLS] ->[self.get_databases]
     def get_databases_summary(self) -> List[Dict]:
         with belief_scope("SupersetClient.get_databases_summary"):
             query = {
@@ -961,12 +998,13 @@ class SupersetClient:
             return databases
     # [/DEF:get_databases_summary:Function]
 
-    # [DEF:get_database_by_uuid:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.get_database_by_uuid:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Find a database by its UUID.
-    # @PARAM: db_uuid (str) - The UUID of the database.
     # @PRE: db_uuid must be a valid UUID string.
     # @POST: Returns database info or None.
-    # @RETURN: Optional[Dict] - Database info if found, else None.
+    # @DATA_CONTRACT: Input[db_uuid: str] -> Output[Optional[Dict]]
+    # @RELATION: [CALLS] ->[self.get_databases]
     def get_database_by_uuid(self, db_uuid: str) -> Optional[Dict]:
         with belief_scope("SupersetClient.get_database_by_uuid", f"uuid={db_uuid}"):
             query = {
@@ -980,10 +1018,12 @@ class SupersetClient:
 
     # [SECTION: HELPERS]
 
-    # [DEF:_resolve_target_id_for_delete:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient._resolve_target_id_for_delete:Function]
+    # @COMPLEXITY: 1
     # @PURPOSE: Resolves a dashboard ID from either an ID or a slug.
     # @PRE: Either dash_id or dash_slug should be provided.
     # @POST: Returns the resolved ID or None.
+    # @RELATION: [CALLS] ->[self.get_dashboards]
     def _resolve_target_id_for_delete(self, dash_id: Optional[int], dash_slug: Optional[str]) -> Optional[int]:
         with belief_scope("_resolve_target_id_for_delete"):
             if dash_id is not None:
@@ -1001,10 +1041,12 @@ class SupersetClient:
             return None
     # [/DEF:_resolve_target_id_for_delete:Function]
 
-    # [DEF:_do_import:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient._do_import:Function]
+    # @COMPLEXITY: 1
     # @PURPOSE: Performs the actual multipart upload for import.
     # @PRE: file_name must be a path to an existing ZIP file.
     # @POST: Returns the API response from the upload.
+    # @RELATION: [CALLS] ->[self.network.upload_file]
     def _do_import(self, file_name: Union[str, Path]) -> Dict:
         with belief_scope("_do_import"):
             app_logger.debug(f"[_do_import][State] Uploading file: {file_name}")
@@ -1021,7 +1063,8 @@ class SupersetClient:
             )
     # [/DEF:_do_import:Function]
 
-    # [DEF:_validate_export_response:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient._validate_export_response:Function]
+    # @COMPLEXITY: 1
     # @PURPOSE: Validates that the export response is a non-empty ZIP archive.
     # @PRE: response must be a valid requests.Response object.
     # @POST: Raises SupersetAPIError if validation fails.
@@ -1034,7 +1077,8 @@ class SupersetClient:
                 raise SupersetAPIError("Получены пустые данные при экспорте")
     # [/DEF:_validate_export_response:Function]
 
-    # [DEF:_resolve_export_filename:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient._resolve_export_filename:Function]
+    # @COMPLEXITY: 1
     # @PURPOSE: Determines the filename for an exported dashboard.
     # @PRE: response must contain Content-Disposition header or dashboard_id must be provided.
     # @POST: Returns a sanitized filename string.
@@ -1049,7 +1093,8 @@ class SupersetClient:
             return filename
     # [/DEF:_resolve_export_filename:Function]
 
-    # [DEF:_validate_query_params:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient._validate_query_params:Function]
+    # @COMPLEXITY: 1
     # @PURPOSE: Ensures query parameters have default page and page_size.
     # @PRE: query can be None or a dictionary.
     # @POST: Returns a dictionary with at least page and page_size.
@@ -1061,10 +1106,12 @@ class SupersetClient:
             return {**base_query, **(query or {})}
     # [/DEF:_validate_query_params:Function]
 
-    # [DEF:_fetch_total_object_count:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient._fetch_total_object_count:Function]
+    # @COMPLEXITY: 1
     # @PURPOSE: Fetches the total number of items for a given endpoint.
     # @PRE: endpoint must be a valid Superset API path.
     # @POST: Returns the total count as an integer.
+    # @RELATION: [CALLS] ->[self.network.fetch_paginated_count]
     def _fetch_total_object_count(self, endpoint: str) -> int:
         with belief_scope("_fetch_total_object_count"):
             return self.network.fetch_paginated_count(
@@ -1074,7 +1121,8 @@ class SupersetClient:
             )
     # [/DEF:_fetch_total_object_count:Function]
 
-    # [DEF:_fetch_all_pages:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient._fetch_all_pages:Function]
+    # @COMPLEXITY: 1
     # @PURPOSE: Iterates through all pages to collect all data items.
     # @PRE: pagination_options must contain base_query, total_count, and results_field.
     # @POST: Returns a combined list of all items.
@@ -1083,7 +1131,8 @@ class SupersetClient:
             return self.network.fetch_paginated_data(endpoint=endpoint, pagination_options=pagination_options)
     # [/DEF:_fetch_all_pages:Function]
 
-    # [DEF:_validate_import_file:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient._validate_import_file:Function]
+    # @COMPLEXITY: 1
     # @PURPOSE: Validates that the file to be imported is a valid ZIP with metadata.yaml.
     # @PRE: zip_path must be a path to a file.
     # @POST: Raises error if file is missing, not a ZIP, or missing metadata.
@@ -1099,7 +1148,8 @@ class SupersetClient:
                     raise SupersetAPIError(f"Архив {zip_path} не содержит 'metadata.yaml'")
     # [/DEF:_validate_import_file:Function]
 
-    # [DEF:get_all_resources:Function]
+    # [DEF:backend.src.core.superset_client.SupersetClient.get_all_resources:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Fetches all resources of a given type with id, uuid, and name columns.
     # @PARAM: resource_type (str) - One of "chart", "dataset", "dashboard".
     # @PRE: Client is authenticated. resource_type is valid.
@@ -1148,6 +1198,6 @@ class SupersetClient:
 
     # [/SECTION]
 
-# [/DEF:SupersetClient:Class]
+# [/DEF:backend.src.core.superset_client.SupersetClient:Class]
 
 # [/DEF:backend.src.core.superset_client:Module]

backend/src/core/superset_profile_lookup.py

@@ -1,6 +1,6 @@
 # [DEF:backend.src.core.superset_profile_lookup:Module]
 #
-# @TIER:      STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: superset, users, lookup, profile, pagination, normalization
 # @PURPOSE:   Provides environment-scoped Superset account lookup adapter with stable normalized output.
 # @LAYER:     Core
@@ -19,7 +19,7 @@ from .utils.network import APIClient, AuthenticationError, SupersetAPIError
 
 
 # [DEF:SupersetAccountLookupAdapter:Class]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @PURPOSE: Lookup Superset users and normalize candidates for profile binding.
 class SupersetAccountLookupAdapter:
     # [DEF:__init__:Function]

backend/src/core/task_manager/__init__.py

@@ -1,9 +1,12 @@
 # [DEF:TaskManagerPackage:Module]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @SEMANTICS: task, manager, package, exports
 # @PURPOSE: Exports the public API of the task manager package.
 # @LAYER: Core
-# @RELATION: Aggregates models and manager.
+# @RELATION: DEPENDS_ON ->[TaskManagerModels]
+# @RELATION: DEPENDS_ON ->[TaskManagerModule]
+# @RELATION: DEPENDS_ON ->[backend.src.core.task_manager.manager.TaskManager]
+# @INVARIANT: Package exports stay aligned with manager and models contracts.
 
 from .models import Task, TaskStatus, LogEntry
 from .manager import TaskManager

backend/src/core/task_manager/__tests__/test_context.py

@@ -0,0 +1,29 @@
+# [DEF:backend.src.core.task_manager.__tests__.test_context:Module]
+# @COMPLEXITY: 3
+# @SEMANTICS: tests, task-context, background-tasks, sub-context
+# @PURPOSE: Verify TaskContext preserves optional background task scheduler across sub-context creation.
+
+from unittest.mock import MagicMock
+
+from src.core.task_manager.context import TaskContext
+
+
+# [DEF:test_task_context_preserves_background_tasks_across_sub_context:Function]
+# @PURPOSE: Plugins must be able to access background_tasks from both root and sub-context loggers.
+# @PRE: TaskContext is initialized with a BackgroundTasks-like object.
+# @POST: background_tasks remains available on root and derived sub-contexts.
+def test_task_context_preserves_background_tasks_across_sub_context():
+    background_tasks = MagicMock()
+    context = TaskContext(
+        task_id="task-1",
+        add_log_fn=lambda **_kwargs: None,
+        params={"x": 1},
+        background_tasks=background_tasks,
+    )
+
+    sub_context = context.create_sub_context("llm")
+
+    assert context.background_tasks is background_tasks
+    assert sub_context.background_tasks is background_tasks
+# [/DEF:test_task_context_preserves_background_tasks_across_sub_context:Function]
+# [/DEF:backend.src.core.task_manager.__tests__.test_context:Module]

backend/src/core/task_manager/cleanup.py

@@ -1,5 +1,5 @@
 # [DEF:TaskCleanupModule:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: task, cleanup, retention, logs
 # @PURPOSE: Implements task cleanup and retention policies, including associated logs.
 # @LAYER: Core
@@ -12,7 +12,7 @@ from ..config_manager import ConfigManager
 
 # [DEF:TaskCleanupService:Class]
 # @PURPOSE: Provides methods to clean up old task records and their associated logs.
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 class TaskCleanupService:
     # [DEF:__init__:Function]
     # @PURPOSE: Initializes the cleanup service with dependencies.

backend/src/core/task_manager/context.py

@@ -3,12 +3,12 @@
 # @PURPOSE: Provides execution context passed to plugins during task execution.
 # @LAYER: Core
 # @RELATION: DEPENDS_ON -> TaskLogger, USED_BY -> plugins
-# @TIER: CRITICAL
+# @COMPLEXITY: 5
 # @INVARIANT: Each TaskContext is bound to a single task execution.
 
 # [SECTION: IMPORTS]
 # [SECTION: IMPORTS]
-from typing import Dict, Any, Callable
+from typing import Dict, Any, Callable, Optional
 from .task_logger import TaskLogger
 from ..logger import belief_scope
 # [/SECTION]
@@ -16,7 +16,7 @@ from ..logger import belief_scope
 # [DEF:TaskContext:Class]
 # @SEMANTICS: context, task, execution, plugin
 # @PURPOSE: A container passed to plugin.execute() providing the logger and other task-specific utilities.
-# @TIER: CRITICAL
+# @COMPLEXITY: 5
 # @INVARIANT: logger is always a valid TaskLogger instance.
 # @UX_STATE: Idle -> Active -> Complete
 #
@@ -58,11 +58,13 @@ class TaskContext:
         task_id: str,
         add_log_fn: Callable,
         params: Dict[str, Any],
-        default_source: str = "plugin"
+        default_source: str = "plugin",
+        background_tasks: Optional[Any] = None,
     ):
         with belief_scope("__init__"):
             self._task_id = task_id
             self._params = params
+            self._background_tasks = background_tasks
             self._logger = TaskLogger(
                 task_id=task_id,
                 add_log_fn=add_log_fn,
@@ -102,6 +104,16 @@ class TaskContext:
         with belief_scope("params"):
             return self._params
     # [/DEF:params:Function]
+
+    # [DEF:background_tasks:Function]
+    # @PURPOSE: Expose optional background task scheduler for plugins that dispatch deferred side effects.
+    # @PRE: TaskContext must be initialized.
+    # @POST: Returns BackgroundTasks-like object or None.
+    @property
+    def background_tasks(self) -> Optional[Any]:
+        with belief_scope("background_tasks"):
+            return self._background_tasks
+    # [/DEF:background_tasks:Function]
     
     # [DEF:get_param:Function]
     # @PURPOSE: Get a specific parameter value with optional default.
@@ -128,7 +140,8 @@ class TaskContext:
                 task_id=self._task_id,
                 add_log_fn=self._logger._add_log,
                 params=self._params,
-                default_source=source
+                default_source=source,
+                background_tasks=self._background_tasks,
             )
     # [/DEF:create_sub_context:Function]
 

backend/src/core/task_manager/manager.py

@@ -1,9 +1,15 @@
-# [DEF:TaskManagerModule:Module]
+# [DEF:TaskManager:Module]
 # @TIER: CRITICAL
+# @COMPLEXITY: 5
 # @SEMANTICS: task, manager, lifecycle, execution, state
 # @PURPOSE: Manages the lifecycle of tasks, including their creation, execution, and state tracking. It uses a thread pool to run plugins asynchronously.
 # @LAYER: Core
-# @RELATION: Depends on PluginLoader to get plugin instances. It is used by the API layer to create and query tasks.
+# @PRE: Plugin loader and database sessions are initialized.
+# @POST: Orchestrates task execution and persistence.
+# @SIDE_EFFECT: Spawns worker threads and flushes logs to DB.
+# @DATA_CONTRACT: Input[plugin_id, params] -> Model[Task, LogEntry]
+# @RELATION: [DEPENDS_ON] ->[PluginLoader:Class]
+# @RELATION: [DEPENDS_ON] ->[TaskPersistenceModule:Module]
 # @INVARIANT: Task IDs are unique.
 # @CONSTRAINT: Must use belief_scope for logging.
 # @TEST_CONTRACT: TaskManagerModule -> {
@@ -33,26 +39,19 @@ from ..logger import logger, belief_scope, should_log_task_level
 # [/SECTION]
 
 # [DEF:TaskManager:Class]
+# @TIER: CRITICAL
+# @COMPLEXITY: 5
 # @SEMANTICS: task, manager, lifecycle, execution, state
 # @PURPOSE: Manages the lifecycle of tasks, including their creation, execution, and state tracking.
-# @TIER: CRITICAL
+# @LAYER: Core
+# @RELATION: [DEPENDS_ON] ->[TaskPersistenceService:Class]
+# @RELATION: [DEPENDS_ON] ->[TaskLogPersistenceService:Class]
+# @RELATION: [DEPENDS_ON] ->[PluginLoader:Class]
 # @INVARIANT: Task IDs are unique within the registry.
 # @INVARIANT: Each task has exactly one status at any time.
 # @INVARIANT: Log entries are never deleted after being added to a task.
-#
-# @TEST_CONTRACT: TaskManagerModel ->
-# {
-#   required_fields: {plugin_loader: PluginLoader},
-#   invariants: [
-#       "Tasks are persisted immediately upon creation",
-#       "Running tasks use a thread pool or asyncio event loop based on executor type",
-#       "Log flushing runs on a background thread"
-#   ]
-# }
-# @TEST_FIXTURE: valid_manager -> {"plugin_loader": "MockPluginLoader()"}
-# @TEST_EDGE: create_task_invalid_plugin -> raises ValueError
-# @TEST_EDGE: create_task_invalid_params -> raises ValueError
-# @TEST_INVARIANT: lifecycle_management -> verifies: [valid_manager]
+# @SIDE_EFFECT: Spawns worker threads, flushes logs to database, and mutates task states.
+# @DATA_CONTRACT: Input[plugin_id, params] -> Output[Task]
 class TaskManager:
     """
     Manages the lifecycle of tasks, including their creation, execution, and state tracking.
@@ -62,6 +61,7 @@ class TaskManager:
     LOG_FLUSH_INTERVAL = 2.0
     
     # [DEF:__init__:Function]
+    # @COMPLEXITY: 5
     # @PURPOSE: Initialize the TaskManager with dependencies.
     # @PRE:     plugin_loader is initialized.
     # @POST:    TaskManager is ready to accept tasks.
@@ -93,8 +93,9 @@ class TaskManager:
             # Load persisted tasks on startup
             self.load_persisted_tasks()
     # [/DEF:__init__:Function]
-    
+
     # [DEF:_flusher_loop:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Background thread that periodically flushes log buffer to database.
     # @PRE: TaskManager is initialized.
     # @POST: Logs are batch-written to database every LOG_FLUSH_INTERVAL seconds.
@@ -104,8 +105,9 @@ class TaskManager:
             self._flush_logs()
             self._flusher_stop_event.wait(self.LOG_FLUSH_INTERVAL)
     # [/DEF:_flusher_loop:Function]
-    
+
     # [DEF:_flush_logs:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Flush all buffered logs to the database.
     # @PRE: None.
     # @POST: All buffered logs are written to task_logs table.
@@ -130,8 +132,9 @@ class TaskManager:
                             self._log_buffer[task_id] = []
                         self._log_buffer[task_id].extend(logs)
     # [/DEF:_flush_logs:Function]
-    
+
     # [DEF:_flush_task_logs:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Flush logs for a specific task immediately.
     # @PRE: task_id exists.
     # @POST: Task's buffered logs are written to database.
@@ -150,6 +153,7 @@ class TaskManager:
     # [/DEF:_flush_task_logs:Function]
 
     # [DEF:create_task:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Creates and queues a new task for execution.
     # @PRE:     Plugin with plugin_id exists. Params are valid.
     # @POST:    Task is created, added to registry, and scheduled for execution.
@@ -179,6 +183,7 @@ class TaskManager:
     # [/DEF:create_task:Function]
 
     # [DEF:_run_task:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Internal method to execute a task with TaskContext support.
     # @PRE:     Task exists in registry.
     # @POST:    Task is executed, status updated to SUCCESS or FAILED.
@@ -208,7 +213,8 @@ class TaskManager:
                         task_id=task_id,
                         add_log_fn=self._add_log,
                         params=params,
-                        default_source="plugin"
+                        default_source="plugin",
+                        background_tasks=None,
                     )
                     
                     if asyncio.iscoroutinefunction(plugin.execute):
@@ -245,6 +251,7 @@ class TaskManager:
     # [/DEF:_run_task:Function]
 
     # [DEF:resolve_task:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Resumes a task that is awaiting mapping.
     # @PRE:     Task exists and is in AWAITING_MAPPING state.
     # @POST:    Task status updated to RUNNING, params updated, execution resumed.
@@ -269,6 +276,7 @@ class TaskManager:
     # [/DEF:resolve_task:Function]
 
     # [DEF:wait_for_resolution:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Pauses execution and waits for a resolution signal.
     # @PRE:     Task exists.
     # @POST:    Execution pauses until future is set.
@@ -291,6 +299,7 @@ class TaskManager:
     # [/DEF:wait_for_resolution:Function]
 
     # [DEF:wait_for_input:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Pauses execution and waits for user input.
     # @PRE:     Task exists.
     # @POST:    Execution pauses until future is set via resume_task_with_password.
@@ -312,6 +321,7 @@ class TaskManager:
     # [/DEF:wait_for_input:Function]
 
     # [DEF:get_task:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Retrieves a task by its ID.
     # @PRE:     task_id is a string.
     # @POST:    Returns Task object or None.
@@ -323,6 +333,7 @@ class TaskManager:
     # [/DEF:get_task:Function]
 
     # [DEF:get_all_tasks:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Retrieves all registered tasks.
     # @PRE:     None.
     # @POST:    Returns list of all Task objects.
@@ -333,6 +344,7 @@ class TaskManager:
     # [/DEF:get_all_tasks:Function]
 
     # [DEF:get_tasks:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Retrieves tasks with pagination and optional status filter.
     # @PRE:     limit and offset are non-negative integers.
     # @POST:    Returns a list of tasks sorted by start_time descending.
@@ -373,6 +385,7 @@ class TaskManager:
     # [/DEF:get_tasks:Function]
 
     # [DEF:get_task_logs:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Retrieves logs for a specific task (from memory for running, persistence for completed).
     # @PRE:     task_id is a string.
     # @POST:    Returns list of LogEntry or TaskLog objects.
@@ -405,6 +418,7 @@ class TaskManager:
     # [/DEF:get_task_logs:Function]
     
     # [DEF:get_task_log_stats:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Get statistics about logs for a task.
     # @PRE: task_id is a valid task ID.
     # @POST: Returns LogStats with counts by level and source.
@@ -416,6 +430,7 @@ class TaskManager:
     # [/DEF:get_task_log_stats:Function]
     
     # [DEF:get_task_log_sources:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Get unique sources for a task's logs.
     # @PRE: task_id is a valid task ID.
     # @POST: Returns list of unique source strings.
@@ -427,6 +442,7 @@ class TaskManager:
     # [/DEF:get_task_log_sources:Function]
 
     # [DEF:_add_log:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Adds a log entry to a task buffer and notifies subscribers.
     # @PRE:     Task exists.
     # @POST:    Log added to buffer and pushed to queues (if level meets task_log_level filter).
@@ -479,6 +495,7 @@ class TaskManager:
     # [/DEF:_add_log:Function]
 
     # [DEF:subscribe_logs:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Subscribes to real-time logs for a task.
     # @PRE:     task_id is a string.
     # @POST:    Returns an asyncio.Queue for log entries.
@@ -494,6 +511,7 @@ class TaskManager:
     # [/DEF:subscribe_logs:Function]
 
     # [DEF:unsubscribe_logs:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Unsubscribes from real-time logs for a task.
     # @PRE:     task_id is a string, queue is asyncio.Queue.
     # @POST:    Queue removed from subscribers.
@@ -509,6 +527,7 @@ class TaskManager:
     # [/DEF:unsubscribe_logs:Function]
 
     # [DEF:load_persisted_tasks:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Load persisted tasks using persistence service.
     # @PRE:     None.
     # @POST:    Persisted tasks loaded into self.tasks.
@@ -521,6 +540,7 @@ class TaskManager:
     # [/DEF:load_persisted_tasks:Function]
 
     # [DEF:await_input:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Transition a task to AWAITING_INPUT state with input request.
     # @PRE:     Task exists and is in RUNNING state.
     # @POST:    Task status changed to AWAITING_INPUT, input_request set, persisted.
@@ -543,6 +563,7 @@ class TaskManager:
     # [/DEF:await_input:Function]
 
     # [DEF:resume_task_with_password:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Resume a task that is awaiting input with provided passwords.
     # @PRE:     Task exists and is in AWAITING_INPUT state.
     # @POST:    Task status changed to RUNNING, passwords injected, task resumed.
@@ -572,6 +593,7 @@ class TaskManager:
     # [/DEF:resume_task_with_password:Function]
 
     # [DEF:clear_tasks:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Clears tasks based on status filter (also deletes associated logs).
     # @PRE:     status is Optional[TaskStatus].
     # @POST:    Tasks matching filter (or all non-active) cleared from registry and database.
@@ -616,6 +638,5 @@ class TaskManager:
             logger.info(f"Cleared {len(tasks_to_remove)} tasks.")
             return len(tasks_to_remove)
     # [/DEF:clear_tasks:Function]
-
 # [/DEF:TaskManager:Class]
-# [/DEF:TaskManagerModule:Module]
+# [/DEF:TaskManager:Module]

backend/src/core/task_manager/models.py

@@ -1,5 +1,5 @@
 # [DEF:TaskManagerModels:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: task, models, pydantic, enum, state
 # @PURPOSE: Defines the data models and enumerations used by the Task Manager.
 # @LAYER: Core
@@ -17,7 +17,7 @@ from pydantic import BaseModel, Field
 # [/SECTION]
 
 # [DEF:TaskStatus:Enum]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @SEMANTICS: task, status, state, enum
 # @PURPOSE: Defines the possible states a task can be in during its lifecycle.
 class TaskStatus(str, Enum):
@@ -32,7 +32,7 @@ class TaskStatus(str, Enum):
 # [DEF:LogLevel:Enum]
 # @SEMANTICS: log, level, severity, enum
 # @PURPOSE: Defines the possible log levels for task logging.
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 class LogLevel(str, Enum):
     DEBUG = "DEBUG"
     INFO = "INFO"
@@ -43,7 +43,7 @@ class LogLevel(str, Enum):
 # [DEF:LogEntry:Class]
 # @SEMANTICS: log, entry, record, pydantic
 # @PURPOSE: A Pydantic model representing a single, structured log entry associated with a task.
-# @TIER: CRITICAL
+# @COMPLEXITY: 5
 # @INVARIANT: Each log entry has a unique timestamp and source.
 #
 # @TEST_CONTRACT: LogEntryModel ->
@@ -65,7 +65,7 @@ class LogEntry(BaseModel):
 # [DEF:TaskLog:Class]
 # @SEMANTICS: task, log, persistent, pydantic
 # @PURPOSE: A Pydantic model representing a persisted log entry from the database.
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @RELATION: MAPS_TO -> TaskLogRecord
 class TaskLog(BaseModel):
     id: int
@@ -83,7 +83,7 @@ class TaskLog(BaseModel):
 # [DEF:LogFilter:Class]
 # @SEMANTICS: log, filter, query, pydantic
 # @PURPOSE: Filter parameters for querying task logs.
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 class LogFilter(BaseModel):
     level: Optional[str] = None  # Filter by log level
     source: Optional[str] = None  # Filter by source component
@@ -95,7 +95,7 @@ class LogFilter(BaseModel):
 # [DEF:LogStats:Class]
 # @SEMANTICS: log, stats, aggregation, pydantic
 # @PURPOSE: Statistics about log entries for a task.
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 class LogStats(BaseModel):
     total_count: int
     by_level: Dict[str, int]  # {"INFO": 10, "ERROR": 2}
@@ -103,7 +103,7 @@ class LogStats(BaseModel):
 # [/DEF:LogStats:Class]
 
 # [DEF:Task:Class]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: task, job, execution, state, pydantic
 # @PURPOSE: A Pydantic model representing a single execution instance of a plugin, including its status, parameters, and logs.
 class Task(BaseModel):

backend/src/core/task_manager/persistence.py

@@ -1,9 +1,14 @@
 # [DEF:TaskPersistenceModule:Module]
-# @TIER: CRITICAL
+# @COMPLEXITY: 5
 # @SEMANTICS: persistence, sqlite, sqlalchemy, task, storage
 # @PURPOSE: Handles the persistence of tasks using SQLAlchemy and the tasks.db database.
 # @LAYER: Core
-# @RELATION: Used by TaskManager to save and load tasks.
+# @PRE: Tasks database must be initialized with TaskRecord and TaskLogRecord schemas.
+# @POST: Provides reliable storage and retrieval for task metadata and logs.
+# @SIDE_EFFECT: Performs database I/O on tasks.db.
+# @DATA_CONTRACT: Input[Task, LogEntry] -> Model[TaskRecord, TaskLogRecord]
+# @RELATION: [USED_BY] ->[backend.src.core.task_manager.manager.TaskManager]
+# @RELATION: [DEPENDS_ON] ->[TasksSessionLocal]
 # @INVARIANT: Database schema must match the TaskRecord model structure.
 
 # [SECTION: IMPORTS]
@@ -21,9 +26,17 @@ from ..logger import logger, belief_scope
 # [/SECTION]
 
 # [DEF:TaskPersistenceService:Class]
-# @TIER: CRITICAL
+# @COMPLEXITY: 5
 # @SEMANTICS: persistence, service, database, sqlalchemy
-# @PURPOSE: Provides methods to save and load tasks from the tasks.db database using SQLAlchemy.
+# @PURPOSE: Provides methods to save, load, and delete task records in tasks.db using SQLAlchemy models.
+# @PRE: TasksSessionLocal must provide an active SQLAlchemy session, Task inputs must expose id/plugin_id/status/params/result/logs fields, and TaskRecord plus Environment schemas must be available.
+# @POST: Persist operations leave matching TaskRecord rows committed or rolled back without leaking sessions, load operations return reconstructed Task objects from stored TaskRecord rows, and delete operations remove only the addressed task rows.
+# @SIDE_EFFECT: Opens SQLAlchemy sessions, reads and writes task_records rows, resolves environment foreign keys against environments, commits or rolls back transactions, and emits error logs on persistence failures.
+# @DATA_CONTRACT: Input[Task | List[Task] | List[str] | Query(limit:int,status:Optional[TaskStatus])] -> Model[TaskRecord, Environment] -> Output[None | List[Task]]
+# @RELATION: [DEPENDS_ON] ->[TasksSessionLocal]
+# @RELATION: [DEPENDS_ON] ->[TaskRecord]
+# @RELATION: [DEPENDS_ON] ->[Environment]
+# @RELATION: [USED_BY] ->[backend.src.core.task_manager.manager.TaskManager]
 # @INVARIANT: Persistence must handle potentially missing task fields natively.
 #
 # @TEST_CONTRACT: TaskPersistenceService ->
@@ -41,6 +54,7 @@ from ..logger import logger, belief_scope
 # @TEST_INVARIANT: accurate_round_trip -> verifies: [valid_task_persistence, load_corrupt_json_params]
 class TaskPersistenceService:
     # [DEF:_json_load_if_needed:Function]
+    # @COMPLEXITY: 1
     # @PURPOSE: Safely load JSON strings from DB if necessary
     # @PRE: value is an arbitrary database value
     # @POST: Returns parsed JSON object, list, string, or primitive
@@ -63,6 +77,7 @@ class TaskPersistenceService:
     # [/DEF:_json_load_if_needed:Function]
 
     # [DEF:_parse_datetime:Function]
+    # @COMPLEXITY: 1
     # @PURPOSE: Safely parse a datetime string from the database
     # @PRE: value is an ISO string or datetime object
     # @POST: Returns datetime object or None
@@ -80,10 +95,11 @@ class TaskPersistenceService:
     # [/DEF:_parse_datetime:Function]
 
     # [DEF:_resolve_environment_id:Function]
-    # @TIER: STANDARD
+    # @COMPLEXITY: 3
     # @PURPOSE: Resolve environment id into existing environments.id value to satisfy FK constraints.
     # @PRE: Session is active
     # @POST: Returns existing environments.id or None when unresolved.
+    # @DATA_CONTRACT: Input[env_id: Optional[str]] -> Output[Optional[str]]
     @staticmethod
     def _resolve_environment_id(session: Session, env_id: Optional[str]) -> Optional[str]:
         with belief_scope("_resolve_environment_id"):
@@ -118,6 +134,7 @@ class TaskPersistenceService:
     # [/DEF:_resolve_environment_id:Function]
 
     # [DEF:__init__:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Initializes the persistence service.
     # @PRE:     None.
     # @POST:    Service is ready.
@@ -128,11 +145,14 @@ class TaskPersistenceService:
     # [/DEF:__init__:Function]
 
     # [DEF:persist_task:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Persists or updates a single task in the database.
     # @PRE:     isinstance(task, Task)
     # @POST:    Task record created or updated in database.
     # @PARAM:   task (Task) - The task object to persist.
     # @SIDE_EFFECT: Writes to task_records table in tasks.db
+    # @DATA_CONTRACT: Input[Task] -> Model[TaskRecord]
+    # @RELATION: [CALLS] ->[_resolve_environment_id]
     def persist_task(self, task: Task) -> None:
         with belief_scope("TaskPersistenceService.persist_task", f"task_id={task.id}"):
             session: Session = TasksSessionLocal()
@@ -190,10 +210,12 @@ class TaskPersistenceService:
     # [/DEF:persist_task:Function]
 
     # [DEF:persist_tasks:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Persists multiple tasks.
     # @PRE:     isinstance(tasks, list)
     # @POST:    All tasks in list are persisted.
     # @PARAM:   tasks (List[Task]) - The list of tasks to persist.
+    # @RELATION: [CALLS] ->[persist_task]
     def persist_tasks(self, tasks: List[Task]) -> None:
         with belief_scope("TaskPersistenceService.persist_tasks"):
             for task in tasks:
@@ -201,12 +223,16 @@ class TaskPersistenceService:
     # [/DEF:persist_tasks:Function]
 
     # [DEF:load_tasks:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Loads tasks from the database.
     # @PRE:     limit is an integer.
     # @POST:    Returns list of Task objects.
     # @PARAM:   limit (int) - Max tasks to load.
     # @PARAM:   status (Optional[TaskStatus]) - Filter by status.
     # @RETURN:  List[Task] - The loaded tasks.
+    # @DATA_CONTRACT: Model[TaskRecord] -> Output[List[Task]]
+    # @RELATION: [CALLS] ->[_json_load_if_needed]
+    # @RELATION: [CALLS] ->[_parse_datetime]
     def load_tasks(self, limit: int = 100, status: Optional[TaskStatus] = None) -> List[Task]:
         with belief_scope("TaskPersistenceService.load_tasks"):
             session: Session = TasksSessionLocal()
@@ -255,10 +281,12 @@ class TaskPersistenceService:
     # [/DEF:load_tasks:Function]
 
     # [DEF:delete_tasks:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Deletes specific tasks from the database.
     # @PRE:     task_ids is a list of strings.
     # @POST:    Specified task records deleted from database.
     # @PARAM:   task_ids (List[str]) - List of task IDs to delete.
+    # @SIDE_EFFECT: Deletes rows from task_records table.
     def delete_tasks(self, task_ids: List[str]) -> None:
         if not task_ids:
             return
@@ -273,14 +301,19 @@ class TaskPersistenceService:
             finally:
                 session.close()
     # [/DEF:delete_tasks:Function]
-
 # [/DEF:TaskPersistenceService:Class]
 
 # [DEF:TaskLogPersistenceService:Class]
+# @COMPLEXITY: 5
 # @SEMANTICS: persistence, service, database, log, sqlalchemy
-# @PURPOSE: Provides methods to save and query task logs from the task_logs table.
-# @TIER: CRITICAL
-# @RELATION: DEPENDS_ON -> TaskLogRecord
+# @PURPOSE: Provides methods to store, query, summarize, and delete task log rows in the task_logs table.
+# @PRE: TasksSessionLocal must provide an active SQLAlchemy session, task_id inputs must identify task log rows, LogEntry batches must expose timestamp/level/source/message/metadata fields, and LogFilter inputs must provide pagination and filter attributes used by queries.
+# @POST: add_logs commits all provided log entries or rolls back on failure, query methods return TaskLog or LogStats views reconstructed from TaskLogRecord rows, and delete methods remove only log rows matching the supplied task identifiers.
+# @SIDE_EFFECT: Opens SQLAlchemy sessions, inserts, reads, aggregates, and deletes task_logs rows, serializes log metadata to JSON, commits or rolls back transactions, and emits error logs on persistence failures.
+# @DATA_CONTRACT: Input[task_id:str, logs:List[LogEntry], log_filter:LogFilter, task_ids:List[str]] -> Model[TaskLogRecord] -> Output[None | List[TaskLog] | LogStats | List[str]]
+# @RELATION: [DEPENDS_ON] ->[TaskLogRecord]
+# @RELATION: [DEPENDS_ON] ->[TasksSessionLocal]
+# @RELATION: [USED_BY] ->[backend.src.core.task_manager.manager.TaskManager]
 # @INVARIANT: Log entries are batch-inserted for performance.
 #
 # @TEST_CONTRACT: TaskLogPersistenceService ->
@@ -302,7 +335,7 @@ class TaskLogPersistenceService:
     """
     
     # [DEF:__init__:Function]
-    # @TIER: STANDARD
+    # @COMPLEXITY: 3
     # @PURPOSE: Initializes the TaskLogPersistenceService
     # @PRE: config is provided or defaults are used
     # @POST: Service is ready for log persistence
@@ -311,12 +344,14 @@ class TaskLogPersistenceService:
     # [/DEF:__init__:Function]
     
     # [DEF:add_logs:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Batch insert log entries for a task.
     # @PRE: logs is a list of LogEntry objects.
     # @POST: All logs inserted into task_logs table.
     # @PARAM: task_id (str) - The task ID.
     # @PARAM: logs (List[LogEntry]) - Log entries to insert.
     # @SIDE_EFFECT: Writes to task_logs table.
+    # @DATA_CONTRACT: Input[List[LogEntry]] -> Model[TaskLogRecord]
     def add_logs(self, task_id: str, logs: List[LogEntry]) -> None:
         if not logs:
             return
@@ -342,12 +377,14 @@ class TaskLogPersistenceService:
     # [/DEF:add_logs:Function]
     
     # [DEF:get_logs:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Query logs for a task with filtering and pagination.
     # @PRE: task_id is a valid task ID.
     # @POST: Returns list of TaskLog objects matching filters.
     # @PARAM: task_id (str) - The task ID.
     # @PARAM: log_filter (LogFilter) - Filter parameters.
     # @RETURN: List[TaskLog] - Filtered log entries.
+    # @DATA_CONTRACT: Model[TaskLogRecord] -> Output[List[TaskLog]]
     def get_logs(self, task_id: str, log_filter: LogFilter) -> List[TaskLog]:
         with belief_scope("TaskLogPersistenceService.get_logs", f"task_id={task_id}"):
             session: Session = TasksSessionLocal()
@@ -394,11 +431,13 @@ class TaskLogPersistenceService:
     # [/DEF:get_logs:Function]
     
     # [DEF:get_log_stats:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Get statistics about logs for a task.
     # @PRE: task_id is a valid task ID.
     # @POST: Returns LogStats with counts by level and source.
     # @PARAM: task_id (str) - The task ID.
     # @RETURN: LogStats - Statistics about task logs.
+    # @DATA_CONTRACT: Model[TaskLogRecord] -> Output[LogStats]
     def get_log_stats(self, task_id: str) -> LogStats:
         with belief_scope("TaskLogPersistenceService.get_log_stats", f"task_id={task_id}"):
             session: Session = TasksSessionLocal()
@@ -439,11 +478,13 @@ class TaskLogPersistenceService:
     # [/DEF:get_log_stats:Function]
     
     # [DEF:get_sources:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Get unique sources for a task's logs.
     # @PRE: task_id is a valid task ID.
     # @POST: Returns list of unique source strings.
     # @PARAM: task_id (str) - The task ID.
     # @RETURN: List[str] - Unique source names.
+    # @DATA_CONTRACT: Model[TaskLogRecord] -> Output[List[str]]
     def get_sources(self, task_id: str) -> List[str]:
         with belief_scope("TaskLogPersistenceService.get_sources", f"task_id={task_id}"):
             session: Session = TasksSessionLocal()
@@ -458,6 +499,7 @@ class TaskLogPersistenceService:
     # [/DEF:get_sources:Function]
     
     # [DEF:delete_logs_for_task:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Delete all logs for a specific task.
     # @PRE: task_id is a valid task ID.
     # @POST: All logs for the task are deleted.
@@ -479,10 +521,12 @@ class TaskLogPersistenceService:
     # [/DEF:delete_logs_for_task:Function]
     
     # [DEF:delete_logs_for_tasks:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Delete all logs for multiple tasks.
     # @PRE: task_ids is a list of task IDs.
     # @POST: All logs for the tasks are deleted.
     # @PARAM: task_ids (List[str]) - List of task IDs.
+    # @SIDE_EFFECT: Deletes rows from task_logs table.
     def delete_logs_for_tasks(self, task_ids: List[str]) -> None:
         if not task_ids:
             return
@@ -499,6 +543,5 @@ class TaskLogPersistenceService:
             finally:
                 session.close()
     # [/DEF:delete_logs_for_tasks:Function]
-
 # [/DEF:TaskLogPersistenceService:Class]
 # [/DEF:TaskPersistenceModule:Module]

backend/src/core/task_manager/task_logger.py

@@ -3,7 +3,7 @@
 # @PURPOSE: Provides a dedicated logger for tasks with automatic source attribution.
 # @LAYER: Core
 # @RELATION: DEPENDS_ON -> TaskManager, CALLS -> TaskManager._add_log
-# @TIER: CRITICAL
+# @COMPLEXITY: 5
 # @INVARIANT: Each TaskLogger instance is bound to a specific task_id and default source.
 
 # [SECTION: IMPORTS]
@@ -13,7 +13,7 @@ from typing import Dict, Any, Optional, Callable
 # [DEF:TaskLogger:Class]
 # @SEMANTICS: logger, task, source, attribution
 # @PURPOSE: A wrapper around TaskManager._add_log that carries task_id and source context.
-# @TIER: CRITICAL
+# @COMPLEXITY: 5
 # @INVARIANT: All log calls include the task_id and source.
 # @UX_STATE: Idle -> Logging -> (system records log)
 #

backend/src/core/utils/async_network.py

@@ -1,9 +1,13 @@
 # [DEF:backend.src.core.utils.async_network:Module]
 #
-# @TIER: CRITICAL
+# @COMPLEXITY: 5
 # @SEMANTICS: network, httpx, async, superset, authentication, cache
 # @PURPOSE: Provides async Superset API client with shared auth-token cache to avoid per-request re-login.
 # @LAYER: Infra
+# @PRE: Config payloads contain a Superset base URL and authentication fields needed for login.
+# @POST: Async network clients reuse cached auth tokens and expose stable async request/error translation flow.
+# @SIDE_EFFECT: Performs upstream HTTP I/O and mutates process-local auth cache entries.
+# @DATA_CONTRACT: Input[config: Dict[str, Any]] -> Output[authenticated async Superset HTTP interactions]
 # @RELATION: DEPENDS_ON -> backend.src.core.utils.network.SupersetAuthCache
 # @INVARIANT: Async client reuses cached auth tokens per environment credentials and invalidates on 401.
 
@@ -25,16 +29,22 @@ from .network import (
 # [/SECTION]
 
 
-# [DEF:AsyncAPIClient:Class]
+# [DEF:backend.src.core.utils.async_network.AsyncAPIClient:Class]
+# @COMPLEXITY: 3
 # @PURPOSE: Async Superset API client backed by httpx.AsyncClient with shared auth cache.
+# @RELATION: [DEPENDS_ON] ->[backend.src.core.utils.network.SupersetAuthCache]
+# @RELATION: [CALLS] ->[backend.src.core.utils.network.SupersetAuthCache.get]
+# @RELATION: [CALLS] ->[backend.src.core.utils.network.SupersetAuthCache.set]
 class AsyncAPIClient:
     DEFAULT_TIMEOUT = 30
     _auth_locks: Dict[tuple[str, str, bool], asyncio.Lock] = {}
 
-    # [DEF:__init__:Function]
+    # [DEF:backend.src.core.utils.async_network.AsyncAPIClient.__init__:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Initialize async API client for one environment.
     # @PRE: config contains base_url and auth payload.
     # @POST: Client is ready for async request/authentication flow.
+    # @DATA_CONTRACT: Input[config: Dict[str, Any]] -> self._auth_cache_key[str]
     def __init__(self, config: Dict[str, Any], verify_ssl: bool = True, timeout: int = DEFAULT_TIMEOUT):
         self.base_url: str = self._normalize_base_url(config.get("base_url", ""))
         self.api_base_url: str = f"{self.base_url}/api/v1"
@@ -55,7 +65,8 @@ class AsyncAPIClient:
 
     # [/DEF:__init__:Function]
 
-    # [DEF:_normalize_base_url:Function]
+    # [DEF:backend.src.core.utils.async_network.AsyncAPIClient._normalize_base_url:Function]
+    # @COMPLEXITY: 1
     # @PURPOSE: Normalize base URL for Superset API root construction.
     # @POST: Returns canonical base URL without trailing slash and duplicate /api/v1 suffix.
     def _normalize_base_url(self, raw_url: str) -> str:
@@ -66,6 +77,7 @@ class AsyncAPIClient:
     # [/DEF:_normalize_base_url:Function]
 
     # [DEF:_build_api_url:Function]
+    # @COMPLEXITY: 1
     # @PURPOSE: Build full API URL from relative Superset endpoint.
     # @POST: Returns absolute URL for upstream request.
     def _build_api_url(self, endpoint: str) -> str:
@@ -80,6 +92,7 @@ class AsyncAPIClient:
     # [/DEF:_build_api_url:Function]
 
     # [DEF:_get_auth_lock:Function]
+    # @COMPLEXITY: 1
     # @PURPOSE: Return per-cache-key async lock to serialize fresh login attempts.
     # @POST: Returns stable asyncio.Lock instance.
     @classmethod
@@ -93,8 +106,11 @@ class AsyncAPIClient:
     # [/DEF:_get_auth_lock:Function]
 
     # [DEF:authenticate:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Authenticate against Superset and cache access/csrf tokens.
     # @POST: Client tokens are populated and reusable across requests.
+    # @SIDE_EFFECT: Performs network requests to Superset authentication endpoints.
+    # @DATA_CONTRACT: None -> Output[Dict[str, str]]
     async def authenticate(self) -> Dict[str, str]:
         cached_tokens = SupersetAuthCache.get(self._auth_cache_key)
         if cached_tokens and cached_tokens.get("access_token") and cached_tokens.get("csrf_token"):
@@ -150,8 +166,10 @@ class AsyncAPIClient:
     # [/DEF:authenticate:Function]
 
     # [DEF:get_headers:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Return authenticated Superset headers for async requests.
     # @POST: Headers include Authorization and CSRF tokens.
+    # @RELATION: CALLS -> self.authenticate
     async def get_headers(self) -> Dict[str, str]:
         if not self._authenticated:
             await self.authenticate()
@@ -164,8 +182,13 @@ class AsyncAPIClient:
     # [/DEF:get_headers:Function]
 
     # [DEF:request:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Perform one authenticated async Superset API request.
     # @POST: Returns JSON payload or raw httpx.Response when raw_response=true.
+    # @SIDE_EFFECT: Performs network I/O.
+    # @RELATION: [CALLS] ->[self.get_headers]
+    # @RELATION: [CALLS] ->[self._handle_http_error]
+    # @RELATION: [CALLS] ->[self._handle_network_error]
     async def request(
         self,
         method: str,
@@ -196,8 +219,10 @@ class AsyncAPIClient:
     # [/DEF:request:Function]
 
     # [DEF:_handle_http_error:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Translate upstream HTTP errors into stable domain exceptions.
     # @POST: Raises domain-specific exception for caller flow control.
+    # @DATA_CONTRACT: Input[httpx.HTTPStatusError] -> Exception
     def _handle_http_error(self, exc: httpx.HTTPStatusError, endpoint: str) -> None:
         with belief_scope("AsyncAPIClient._handle_http_error"):
             status_code = exc.response.status_code
@@ -213,8 +238,10 @@ class AsyncAPIClient:
     # [/DEF:_handle_http_error:Function]
 
     # [DEF:_handle_network_error:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Translate generic httpx errors into NetworkError.
     # @POST: Raises NetworkError with URL context.
+    # @DATA_CONTRACT: Input[httpx.HTTPError] -> NetworkError
     def _handle_network_error(self, exc: httpx.HTTPError, url: str) -> None:
         with belief_scope("AsyncAPIClient._handle_network_error"):
             if isinstance(exc, httpx.TimeoutException):
@@ -227,8 +254,10 @@ class AsyncAPIClient:
     # [/DEF:_handle_network_error:Function]
 
     # [DEF:aclose:Function]
+    # @COMPLEXITY: 3
     # @PURPOSE: Close underlying httpx client.
     # @POST: Client resources are released.
+    # @SIDE_EFFECT: Closes network connections.
     async def aclose(self) -> None:
         await self._client.aclose()
     # [/DEF:aclose:Function]

backend/src/core/utils/fileio.py

@@ -1,5 +1,6 @@
-# [DEF:backend.core.utils.fileio:Module]
+# [DEF:FileIO:Module]
 #
+# @TIER: STANDARD
 # @SEMANTICS: file, io, zip, yaml, temp, archive, utility
 # @PURPOSE: Предоставляет набор утилит для управления файловыми операциями, включая работу с временными файлами, архивами ZIP, файлами YAML и очистку директорий.
 # @LAYER: Infra
@@ -484,4 +485,4 @@ def consolidate_archive_folders(root_directory: Path) -> None:
                     app_logger.error("[consolidate_archive_folders][Failure] Failed to remove source directory %s: %s", source_dir, e)  
 # [/DEF:consolidate_archive_folders:Function]
 
-# [/DEF:backend.core.utils.fileio:Module]
+# [/DEF:FileIO:Module]

backend/src/core/utils/network.py

@@ -1,5 +1,6 @@
-# [DEF:backend.core.utils.network:Module]
+# [DEF:network:Module]
 #
+# @COMPLEXITY: 3
 # @SEMANTICS: network, http, client, api, requests, session, authentication
 # @PURPOSE: Инкапсулирует низкоуровневую HTTP-логику для взаимодействия с Superset API, включая аутентификацию, управление сессией, retry-логику и обработку ошибок.
 # @LAYER: Infra
@@ -22,9 +23,11 @@ from ..logger import logger as app_logger, belief_scope
 # [/SECTION]
 
 # [DEF:SupersetAPIError:Class]
+# @COMPLEXITY: 1
 # @PURPOSE: Base exception for all Superset API related errors.
 class SupersetAPIError(Exception):
     # [DEF:__init__:Function]
+    # @COMPLEXITY: 1
     # @PURPOSE: Initializes the exception with a message and context.
     # @PRE: message is a string, context is a dict.
     # @POST: Exception is initialized with context.
@@ -36,9 +39,11 @@ class SupersetAPIError(Exception):
 # [/DEF:SupersetAPIError:Class]
 
 # [DEF:AuthenticationError:Class]
+# @COMPLEXITY: 1
 # @PURPOSE: Exception raised when authentication fails.
 class AuthenticationError(SupersetAPIError):
     # [DEF:__init__:Function]
+    # @COMPLEXITY: 1
     # @PURPOSE: Initializes the authentication error.
     # @PRE: message is a string, context is a dict.
     # @POST: AuthenticationError is initialized.
@@ -77,7 +82,7 @@ class DashboardNotFoundError(SupersetAPIError):
 # [DEF:NetworkError:Class]
 # @PURPOSE: Exception raised when a network level error occurs.
 class NetworkError(Exception):
-    # [DEF:__init__:Function]
+    # [DEF:network.APIClient.__init__:Function]
     # @PURPOSE: Initializes the network error.
     # @PRE: message is a string.
     # @POST: NetworkError is initialized.
@@ -89,7 +94,7 @@ class NetworkError(Exception):
 # [/DEF:NetworkError:Class]
 
 
-# [DEF:SupersetAuthCache:Class]
+# [DEF:network.SupersetAuthCache:Class]
 # @PURPOSE: Process-local cache for Superset access/csrf tokens keyed by environment credentials.
 # @PRE: base_url and username are stable strings.
 # @POST: Cached entries expire automatically by TTL and can be reused across requests.
@@ -145,7 +150,10 @@ class SupersetAuthCache:
 # [/DEF:SupersetAuthCache:Class]
 
 # [DEF:APIClient:Class]
-# @PURPOSE: Инкапсулирует HTTP-логику для работы с API, включая сессии, аутентификацию, и обработку запросов.
+# @COMPLEXITY: 3
+# @PURPOSE: Synchronous Superset API client with process-local auth token caching.
+# @RELATION: DEPENDS_ON -> network.SupersetAuthCache
+# @RELATION: DEPENDS_ON -> logger
 class APIClient:
     DEFAULT_TIMEOUT = 30
 

backend/src/dependencies.py

@@ -1,225 +1,237 @@
-# [DEF:Dependencies:Module]
-# @SEMANTICS: dependency, injection, singleton, factory, auth, jwt
-# @PURPOSE: Manages creation and provision of shared application dependencies, such as PluginLoader and TaskManager, to avoid circular imports.
-# @LAYER: Core
-# @RELATION: Used by main app and API routers to get access to shared instances.
-
-from pathlib import Path
-from fastapi import Depends, HTTPException, status
-from fastapi.security import OAuth2PasswordBearer
-from jose import JWTError
-from .core.plugin_loader import PluginLoader
-from .core.task_manager import TaskManager
-from .core.config_manager import ConfigManager
-from .core.scheduler import SchedulerService
-from .services.resource_service import ResourceService
-from .services.mapping_service import MappingService
-from .services.clean_release.repositories import (
-    CandidateRepository, ArtifactRepository, ManifestRepository,
-    PolicyRepository, ComplianceRepository, ReportRepository,
-    ApprovalRepository, PublicationRepository, AuditRepository,
-    CleanReleaseAuditLog
-)
-from .services.clean_release.repository import CleanReleaseRepository
-from .services.clean_release.facade import CleanReleaseFacade
-from .services.reports.report_service import ReportsService
-from .core.database import init_db, get_auth_db, get_db
-from .core.logger import logger
-from .core.auth.jwt import decode_token
-from .core.auth.repository import AuthRepository
-from .models.auth import User
-
-# Initialize singletons
-# Use absolute path relative to this file to ensure plugins are found regardless of CWD
-project_root = Path(__file__).parent.parent.parent
-config_path = project_root / "config.json"
-
-# Initialize database before services that use persisted configuration.
-init_db()
-config_manager = ConfigManager(config_path=str(config_path))
-
-# [DEF:get_config_manager:Function]
-# @PURPOSE: Dependency injector for ConfigManager.
-# @PRE: Global config_manager must be initialized.
-# @POST: Returns shared ConfigManager instance.
-# @RETURN: ConfigManager - The shared config manager instance.
-def get_config_manager() -> ConfigManager:
-    """Dependency injector for ConfigManager."""
-    return config_manager
-# [/DEF:get_config_manager:Function]
-
-plugin_dir = Path(__file__).parent / "plugins"
-
-plugin_loader = PluginLoader(plugin_dir=str(plugin_dir))
-logger.info(f"PluginLoader initialized with directory: {plugin_dir}")
-logger.info(f"Available plugins: {[config.name for config in plugin_loader.get_all_plugin_configs()]}")
-
-task_manager = TaskManager(plugin_loader)
-logger.info("TaskManager initialized")
-
-scheduler_service = SchedulerService(task_manager, config_manager)
-logger.info("SchedulerService initialized")
-
-resource_service = ResourceService()
-logger.info("ResourceService initialized")
-
-# Clean Release Redesign Singletons
-# Note: These use get_db() which is a generator, so we need a way to provide a session.
-# For singletons in dependencies.py, we might need a different approach or
-# initialize them inside the dependency functions.
-
-# [DEF:get_plugin_loader:Function]
-# @PURPOSE: Dependency injector for PluginLoader.
-# @PRE: Global plugin_loader must be initialized.
-# @POST: Returns shared PluginLoader instance.
-# @RETURN: PluginLoader - The shared plugin loader instance.
-def get_plugin_loader() -> PluginLoader:
-    """Dependency injector for PluginLoader."""
-    return plugin_loader
-# [/DEF:get_plugin_loader:Function]
-
-# [DEF:get_task_manager:Function]
-# @PURPOSE: Dependency injector for TaskManager.
-# @PRE: Global task_manager must be initialized.
-# @POST: Returns shared TaskManager instance.
-# @RETURN: TaskManager - The shared task manager instance.
-def get_task_manager() -> TaskManager:
-    """Dependency injector for TaskManager."""
-    return task_manager
-# [/DEF:get_task_manager:Function]
-
-# [DEF:get_scheduler_service:Function]
-# @PURPOSE: Dependency injector for SchedulerService.
-# @PRE: Global scheduler_service must be initialized.
-# @POST: Returns shared SchedulerService instance.
-# @RETURN: SchedulerService - The shared scheduler service instance.
-def get_scheduler_service() -> SchedulerService:
-    """Dependency injector for SchedulerService."""
-    return scheduler_service
-# [/DEF:get_scheduler_service:Function]
-
-# [DEF:get_resource_service:Function]
-# @PURPOSE: Dependency injector for ResourceService.
-# @PRE: Global resource_service must be initialized.
-# @POST: Returns shared ResourceService instance.
-# @RETURN: ResourceService - The shared resource service instance.
-def get_resource_service() -> ResourceService:
-    """Dependency injector for ResourceService."""
-    return resource_service
-# [/DEF:get_resource_service:Function]
-
-# [DEF:get_mapping_service:Function]
-# @PURPOSE: Dependency injector for MappingService.
-# @PRE: Global config_manager must be initialized.
-# @POST: Returns new MappingService instance.
-# @RETURN: MappingService - A new mapping service instance.
-def get_mapping_service() -> MappingService:
-    """Dependency injector for MappingService."""
-    return MappingService(config_manager)
-# [/DEF:get_mapping_service:Function]
-
-
-_clean_release_repository = CleanReleaseRepository()
-
-# [DEF:get_clean_release_repository:Function]
-# @PURPOSE: Legacy compatibility shim for CleanReleaseRepository.
-# @POST: Returns a shared CleanReleaseRepository instance.
-def get_clean_release_repository() -> CleanReleaseRepository:
-    """Legacy compatibility shim for CleanReleaseRepository."""
-    return _clean_release_repository
-# [/DEF:get_clean_release_repository:Function]
-
-
-# [DEF:get_clean_release_facade:Function]
-# @PURPOSE: Dependency injector for CleanReleaseFacade.
-# @POST: Returns a facade instance with a fresh DB session.
-def get_clean_release_facade(db = Depends(get_db)) -> CleanReleaseFacade:
-    candidate_repo = CandidateRepository(db)
-    artifact_repo = ArtifactRepository(db)
-    manifest_repo = ManifestRepository(db)
-    policy_repo = PolicyRepository(db)
-    compliance_repo = ComplianceRepository(db)
-    report_repo = ReportRepository(db)
-    approval_repo = ApprovalRepository(db)
-    publication_repo = PublicationRepository(db)
-    audit_repo = AuditRepository(db)
-    
-    return CleanReleaseFacade(
-        candidate_repo=candidate_repo,
-        artifact_repo=artifact_repo,
-        manifest_repo=manifest_repo,
-        policy_repo=policy_repo,
-        compliance_repo=compliance_repo,
-        report_repo=report_repo,
-        approval_repo=approval_repo,
-        publication_repo=publication_repo,
-        audit_repo=audit_repo,
-        config_manager=config_manager
-    )
-# [/DEF:get_clean_release_facade:Function]
-
-# [DEF:oauth2_scheme:Variable]
-# @PURPOSE: OAuth2 password bearer scheme for token extraction.
-oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/auth/login")
-# [/DEF:oauth2_scheme:Variable]
-
-# [DEF:get_current_user:Function]
-# @PURPOSE: Dependency for retrieving currently authenticated user from a JWT.
-# @PRE:     JWT token provided in Authorization header.
-# @POST:    Returns User object if token is valid.
-# @THROW:   HTTPException 401 if token is invalid or user not found.
-# @PARAM:   token (str) - Extracted JWT token.
-# @PARAM:   db (Session) - Auth database session.
-# @RETURN:  User - The authenticated user.
-def get_current_user(token: str = Depends(oauth2_scheme), db = Depends(get_auth_db)):
-    credentials_exception = HTTPException(
-        status_code=status.HTTP_401_UNAUTHORIZED,
-        detail="Could not validate credentials",
-        headers={"WWW-Authenticate": "Bearer"},
-    )
-    try:
-        payload = decode_token(token)
-        username: str = payload.get("sub")
-        if username is None:
-            raise credentials_exception
-    except JWTError:
-        raise credentials_exception
-        
-    repo = AuthRepository(db)
-    user = repo.get_user_by_username(username)
-    if user is None:
-        raise credentials_exception
-    return user
-# [/DEF:get_current_user:Function]
-
-# [DEF:has_permission:Function]
-# @PURPOSE: Dependency for checking if the current user has a specific permission.
-# @PRE:     User is authenticated.
-# @POST:    Returns True if user has permission.
-# @THROW:   HTTPException 403 if permission is denied.
-# @PARAM:   resource (str) - The resource identifier.
-# @PARAM:   action (str) - The action identifier (READ, EXECUTE, WRITE).
-# @RETURN:  User - The authenticated user if permission granted.
-def has_permission(resource: str, action: str):
-    def permission_checker(current_user: User = Depends(get_current_user)):
-        # Union of all permissions across all roles
-        for role in current_user.roles:
-            for perm in role.permissions:
-                if perm.resource == resource and perm.action == action:
-                    return current_user
-        
-        # Special case for Admin role (full access)
-        if any(role.name == "Admin" for role in current_user.roles):
-            return current_user
-        
-        from .core.auth.logger import log_security_event
-        log_security_event("PERMISSION_DENIED", current_user.username, {"resource": resource, "action": action})
-            
-        raise HTTPException(
-            status_code=status.HTTP_403_FORBIDDEN,
-            detail=f"Permission denied for {resource}:{action}"
-        )
-    return permission_checker
-# [/DEF:has_permission:Function]
-
-# [/DEF:Dependencies:Module]
+# [DEF:backend.src.dependencies:Module]
+# @COMPLEXITY: 3
+# @SEMANTICS: dependency, injection, singleton, factory, auth, jwt
+# @PURPOSE: Manages creation and provision of shared application dependencies, such as PluginLoader and TaskManager, to avoid circular imports.
+# @LAYER: Core
+# @RELATION: Used by main app and API routers to get access to shared instances.
+
+from pathlib import Path
+from fastapi import Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordBearer
+from jose import JWTError
+from .core.plugin_loader import PluginLoader
+from .core.task_manager import TaskManager
+from .core.config_manager import ConfigManager
+from .core.scheduler import SchedulerService
+from .services.resource_service import ResourceService
+from .services.mapping_service import MappingService
+from .services.clean_release.repositories import (
+    CandidateRepository, ArtifactRepository, ManifestRepository,
+    PolicyRepository, ComplianceRepository, ReportRepository,
+    ApprovalRepository, PublicationRepository, AuditRepository,
+    CleanReleaseAuditLog
+)
+from .services.clean_release.repository import CleanReleaseRepository
+from .services.clean_release.facade import CleanReleaseFacade
+from .services.reports.report_service import ReportsService
+from .core.database import init_db, get_auth_db, get_db
+from .core.logger import logger
+from .core.auth.jwt import decode_token
+from .core.auth.repository import AuthRepository
+from .models.auth import User
+
+# Initialize singletons
+# Use absolute path relative to this file to ensure plugins are found regardless of CWD
+project_root = Path(__file__).parent.parent.parent
+config_path = project_root / "config.json"
+
+# Initialize database before services that use persisted configuration.
+init_db()
+config_manager = ConfigManager(config_path=str(config_path))
+
+# [DEF:get_config_manager:Function]
+# @COMPLEXITY: 1
+# @PURPOSE: Dependency injector for ConfigManager.
+# @PRE: Global config_manager must be initialized.
+# @POST: Returns shared ConfigManager instance.
+# @RETURN: ConfigManager - The shared config manager instance.
+def get_config_manager() -> ConfigManager:
+    """Dependency injector for ConfigManager."""
+    return config_manager
+# [/DEF:get_config_manager:Function]
+
+plugin_dir = Path(__file__).parent / "plugins"
+
+plugin_loader = PluginLoader(plugin_dir=str(plugin_dir))
+logger.info(f"PluginLoader initialized with directory: {plugin_dir}")
+logger.info(f"Available plugins: {[config.name for config in plugin_loader.get_all_plugin_configs()]}")
+
+task_manager = TaskManager(plugin_loader)
+logger.info("TaskManager initialized")
+
+scheduler_service = SchedulerService(task_manager, config_manager)
+logger.info("SchedulerService initialized")
+
+resource_service = ResourceService()
+logger.info("ResourceService initialized")
+
+# Clean Release Redesign Singletons
+# Note: These use get_db() which is a generator, so we need a way to provide a session.
+# For singletons in dependencies.py, we might need a different approach or
+# initialize them inside the dependency functions.
+
+# [DEF:get_plugin_loader:Function]
+# @COMPLEXITY: 1
+# @PURPOSE: Dependency injector for PluginLoader.
+# @PRE: Global plugin_loader must be initialized.
+# @POST: Returns shared PluginLoader instance.
+# @RETURN: PluginLoader - The shared plugin loader instance.
+def get_plugin_loader() -> PluginLoader:
+    """Dependency injector for PluginLoader."""
+    return plugin_loader
+# [/DEF:get_plugin_loader:Function]
+
+# [DEF:get_task_manager:Function]
+# @COMPLEXITY: 1
+# @PURPOSE: Dependency injector for TaskManager.
+# @PRE: Global task_manager must be initialized.
+# @POST: Returns shared TaskManager instance.
+# @RETURN: TaskManager - The shared task manager instance.
+def get_task_manager() -> TaskManager:
+    """Dependency injector for TaskManager."""
+    return task_manager
+# [/DEF:get_task_manager:Function]
+
+# [DEF:get_scheduler_service:Function]
+# @COMPLEXITY: 1
+# @PURPOSE: Dependency injector for SchedulerService.
+# @PRE: Global scheduler_service must be initialized.
+# @POST: Returns shared SchedulerService instance.
+# @RETURN: SchedulerService - The shared scheduler service instance.
+def get_scheduler_service() -> SchedulerService:
+    """Dependency injector for SchedulerService."""
+    return scheduler_service
+# [/DEF:get_scheduler_service:Function]
+
+# [DEF:get_resource_service:Function]
+# @COMPLEXITY: 1
+# @PURPOSE: Dependency injector for ResourceService.
+# @PRE: Global resource_service must be initialized.
+# @POST: Returns shared ResourceService instance.
+# @RETURN: ResourceService - The shared resource service instance.
+def get_resource_service() -> ResourceService:
+    """Dependency injector for ResourceService."""
+    return resource_service
+# [/DEF:get_resource_service:Function]
+
+# [DEF:get_mapping_service:Function]
+# @COMPLEXITY: 1
+# @PURPOSE: Dependency injector for MappingService.
+# @PRE: Global config_manager must be initialized.
+# @POST: Returns new MappingService instance.
+# @RETURN: MappingService - A new mapping service instance.
+def get_mapping_service() -> MappingService:
+    """Dependency injector for MappingService."""
+    return MappingService(config_manager)
+# [/DEF:get_mapping_service:Function]
+
+
+_clean_release_repository = CleanReleaseRepository()
+
+# [DEF:get_clean_release_repository:Function]
+# @COMPLEXITY: 1
+# @PURPOSE: Legacy compatibility shim for CleanReleaseRepository.
+# @POST: Returns a shared CleanReleaseRepository instance.
+def get_clean_release_repository() -> CleanReleaseRepository:
+    """Legacy compatibility shim for CleanReleaseRepository."""
+    return _clean_release_repository
+# [/DEF:get_clean_release_repository:Function]
+
+
+# [DEF:get_clean_release_facade:Function]
+# @COMPLEXITY: 1
+# @PURPOSE: Dependency injector for CleanReleaseFacade.
+# @POST: Returns a facade instance with a fresh DB session.
+def get_clean_release_facade(db = Depends(get_db)) -> CleanReleaseFacade:
+    candidate_repo = CandidateRepository(db)
+    artifact_repo = ArtifactRepository(db)
+    manifest_repo = ManifestRepository(db)
+    policy_repo = PolicyRepository(db)
+    compliance_repo = ComplianceRepository(db)
+    report_repo = ReportRepository(db)
+    approval_repo = ApprovalRepository(db)
+    publication_repo = PublicationRepository(db)
+    audit_repo = AuditRepository(db)
+    
+    return CleanReleaseFacade(
+        candidate_repo=candidate_repo,
+        artifact_repo=artifact_repo,
+        manifest_repo=manifest_repo,
+        policy_repo=policy_repo,
+        compliance_repo=compliance_repo,
+        report_repo=report_repo,
+        approval_repo=approval_repo,
+        publication_repo=publication_repo,
+        audit_repo=audit_repo,
+        config_manager=config_manager
+    )
+# [/DEF:get_clean_release_facade:Function]
+
+# [DEF:oauth2_scheme:Variable]
+# @COMPLEXITY: 1
+# @PURPOSE: OAuth2 password bearer scheme for token extraction.
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/auth/login")
+# [/DEF:oauth2_scheme:Variable]
+
+# [DEF:get_current_user:Function]
+# @COMPLEXITY: 3
+# @PURPOSE: Dependency for retrieving currently authenticated user from a JWT.
+# @PRE:     JWT token provided in Authorization header.
+# @POST:    Returns User object if token is valid.
+# @THROW:   HTTPException 401 if token is invalid or user not found.
+# @PARAM:   token (str) - Extracted JWT token.
+# @PARAM:   db (Session) - Auth database session.
+# @RETURN:  User - The authenticated user.
+def get_current_user(token: str = Depends(oauth2_scheme), db = Depends(get_auth_db)):
+    credentials_exception = HTTPException(
+        status_code=status.HTTP_401_UNAUTHORIZED,
+        detail="Could not validate credentials",
+        headers={"WWW-Authenticate": "Bearer"},
+    )
+    try:
+        payload = decode_token(token)
+        username: str = payload.get("sub")
+        if username is None:
+            raise credentials_exception
+    except JWTError:
+        raise credentials_exception
+        
+    repo = AuthRepository(db)
+    user = repo.get_user_by_username(username)
+    if user is None:
+        raise credentials_exception
+    return user
+# [/DEF:get_current_user:Function]
+
+# [DEF:has_permission:Function]
+# @COMPLEXITY: 3
+# @PURPOSE: Dependency for checking if the current user has a specific permission.
+# @PRE:     User is authenticated.
+# @POST:    Returns True if user has permission.
+# @THROW:   HTTPException 403 if permission is denied.
+# @PARAM:   resource (str) - The resource identifier.
+# @PARAM:   action (str) - The action identifier (READ, EXECUTE, WRITE).
+# @RETURN:  User - The authenticated user if permission granted.
+def has_permission(resource: str, action: str):
+    def permission_checker(current_user: User = Depends(get_current_user)):
+        # Union of all permissions across all roles
+        for role in current_user.roles:
+            for perm in role.permissions:
+                if perm.resource == resource and perm.action == action:
+                    return current_user
+        
+        # Special case for Admin role (full access)
+        if any(role.name == "Admin" for role in current_user.roles):
+            return current_user
+        
+        from .core.auth.logger import log_security_event
+        log_security_event("PERMISSION_DENIED", current_user.username, {"resource": resource, "action": action})
+            
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail=f"Permission denied for {resource}:{action}"
+        )
+    return permission_checker
+# [/DEF:has_permission:Function]
+
+# [/DEF:backend.src.dependencies:Module]

backend/src/models/__tests__/test_models.py

@@ -1,5 +1,5 @@
 # [DEF:test_models:Module]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Unit tests for data models
 # @LAYER: Domain
 # @RELATION: VERIFIES -> src.models

backend/src/models/__tests__/test_report_models.py

@@ -1,5 +1,5 @@
 # [DEF:test_report_models:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @PURPOSE: Unit tests for report Pydantic models and their validators
 # @LAYER: Domain
 # @RELATION: TESTS -> backend.src.models.report

backend/src/models/assistant.py

@@ -1,5 +1,5 @@
 # [DEF:backend.src.models.assistant:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: assistant, audit, confirmation, chat
 # @PURPOSE: SQLAlchemy models for assistant audit trail and confirmation tokens.
 # @LAYER: Domain
@@ -14,7 +14,7 @@ from .mapping import Base
 
 
 # [DEF:AssistantAuditRecord:Class]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @PURPOSE: Store audit decisions and outcomes produced by assistant command handling.
 # @PRE: user_id must identify the actor for every record.
 # @POST: Audit payload remains available for compliance and debugging.
@@ -33,7 +33,7 @@ class AssistantAuditRecord(Base):
 
 
 # [DEF:AssistantMessageRecord:Class]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @PURPOSE: Persist chat history entries for assistant conversations.
 # @PRE: user_id, conversation_id, role and text must be present.
 # @POST: Message row can be queried in chronological order.
@@ -54,7 +54,7 @@ class AssistantMessageRecord(Base):
 
 
 # [DEF:AssistantConfirmationRecord:Class]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @PURPOSE: Persist risky operation confirmation tokens with lifecycle state.
 # @PRE: intent/dispatch and expiry timestamp must be provided.
 # @POST: State transitions can be tracked and audited.

backend/src/models/auth.py

@@ -1,10 +1,11 @@
-# [DEF:backend.src.models.auth:Module]
+# [DEF:AuthModels:Module]
 #
-# @TIER:      STANDARD
+# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: auth, models, user, role, permission, sqlalchemy
 # @PURPOSE:   SQLAlchemy models for multi-user authentication and authorization.
 # @LAYER:     Domain
-# @RELATION:  INHERITS_FROM -> backend.src.models.mapping.Base
+# @RELATION:  INHERITS_FROM -> [Base]
 #
 # @INVARIANT: Usernames and emails must be unique.
 
@@ -102,4 +103,4 @@ class ADGroupMapping(Base):
     role = relationship("Role")
 # [/DEF:ADGroupMapping:Class]
 
-# [/DEF:backend.src.models.auth:Module]
+# [/DEF:AuthModels:Module]

backend/src/models/clean_release.py

@@ -1,8 +1,12 @@
 # [DEF:backend.src.models.clean_release:Module]
-# @TIER: CRITICAL
+# @COMPLEXITY: 5
 # @SEMANTICS: clean-release, models, lifecycle, compliance, evidence, immutability
 # @PURPOSE: Define canonical clean release domain entities and lifecycle guards.
 # @LAYER: Domain
+# @PRE: Base mapping model and release enums are available.
+# @POST: Provides SQLAlchemy and dataclass definitions for governance domain.
+# @SIDE_EFFECT: None (schema definition).
+# @DATA_CONTRACT: Model[ReleaseCandidate, CandidateArtifact, DistributionManifest, ComplianceRun, ComplianceReport]
 # @INVARIANT: Immutable snapshots are never mutated; forbidden lifecycle transitions are rejected.
 
 from datetime import datetime

backend/src/models/config.py

@@ -1,6 +1,6 @@
 # [DEF:backend.src.models.config:Module]
 #
-# @TIER: CRITICAL
+# @COMPLEXITY: 5
 # @SEMANTICS: database, config, settings, sqlalchemy, notification
 # @PURPOSE: Defines SQLAlchemy persistence models for application and notification configuration records.
 # @LAYER: Domain

backend/src/models/connection.py

@@ -1,6 +1,6 @@
 # [DEF:backend.src.models.connection:Module]
 #
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @SEMANTICS: database, connection, configuration, sqlalchemy, sqlite
 # @PURPOSE:   Defines the database schema for external database connection configurations.
 # @LAYER:     Domain
@@ -16,7 +16,7 @@ import uuid
 # [/SECTION]
 
 # [DEF:ConnectionConfig:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Stores credentials for external databases used for column mapping.
 class ConnectionConfig(Base):
     __tablename__ = "connection_configs"

backend/src/models/dashboard.py

@@ -1,5 +1,5 @@
 # [DEF:backend.src.models.dashboard:Module]
-# @TIER:      STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: dashboard, model, metadata, migration
 # @PURPOSE:   Defines data models for dashboard metadata and selection.
 # @LAYER:     Model
@@ -9,7 +9,7 @@ from pydantic import BaseModel
 from typing import List
 
 # [DEF:DashboardMetadata:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Represents a dashboard available for migration.
 class DashboardMetadata(BaseModel):
     id: int
@@ -19,7 +19,7 @@ class DashboardMetadata(BaseModel):
 # [/DEF:DashboardMetadata:Class]
 
 # [DEF:DashboardSelection:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Represents the user's selection of dashboards to migrate.
 class DashboardSelection(BaseModel):
     selected_ids: List[int]

backend/src/models/git.py

@@ -1,5 +1,5 @@
 # [DEF:GitModels:Module]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @SEMANTICS: git, models, sqlalchemy, database, schema
 # @PURPOSE: Git-specific SQLAlchemy models for configuration and repository tracking.
 # @LAYER: Model
@@ -27,7 +27,7 @@ class SyncStatus(str, enum.Enum):
     CONFLICT = "CONFLICT"
 
 # [DEF:GitServerConfig:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Configuration for a Git server connection.
 class GitServerConfig(Base):
     __tablename__ = "git_server_configs"
@@ -44,7 +44,7 @@ class GitServerConfig(Base):
 # [/DEF:GitServerConfig:Class]
 
 # [DEF:GitRepository:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Tracking for a local Git repository linked to a dashboard.
 class GitRepository(Base):
     __tablename__ = "git_repositories"
@@ -59,7 +59,7 @@ class GitRepository(Base):
 # [/DEF:GitRepository:Class]
 
 # [DEF:DeploymentEnvironment:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Target Superset environments for dashboard deployment.
 class DeploymentEnvironment(Base):
     __tablename__ = "deployment_environments"