# Implementation Plan: [FEATURE]

**Branch**: `[###-feature-name]` | **Date**: [DATE] | **Spec**: [link]
**Input**: Feature specification from `/specs/[###-feature-name]/spec.md`

**Note**: This template is filled in by the `/speckit.plan` command. See `.specify/templates/plan-template.md` for the execution workflow.

## Summary

[Extract from feature spec: primary requirement + technical approach from research]

## Technical Context

<!--
  ACTION REQUIRED: Replace the content in this section with the technical details
  for the project. The structure here is presented in advisory capacity to guide
  the iteration process.
-->

**Language/Version**: Python 3.13+ (backend), JavaScript/TypeScript (frontend Svelte 5)  
**Primary Dependencies**: FastAPI, SQLAlchemy, APScheduler (backend); SvelteKit, Vite, Tailwind CSS (frontend)  
**Storage**: PostgreSQL 16  
**Testing**: pytest (backend), vitest + @testing-library/svelte (frontend)  
**Target Platform**: Linux server (Docker), modern browsers  
**Project Type**: web application (FastAPI REST + WebSocket backend, SvelteKit SPA frontend)  
**Performance Goals**: [domain-specific, e.g., <200ms p95 API latency, 60fps UI]  
**Constraints**: [domain-specific, e.g., <100MB memory per container, RBAC enforcement, offline-capable Docker bundle]  
**Scale/Scope**: [domain-specific, e.g., 50 concurrent users, 1000 dashboards, 10 plugins]

## Constitution Check

*GATE: Must pass before Phase 0 research. Re-check after Phase 1 design.*

[Evaluate against constitution.md and semantics.md. Explicitly confirm semantic protocol compliance, complexity-driven contract coverage, UX-state compatibility (Svelte 5 runes), async boundaries (FastAPI), API-wrapper rules, RBAC/security constraints (local auth + ADFS SSO), plugin lifecycle rules, and any required belief-state/logging constraints for Complexity 4/5 Python modules.]

## Project Structure

### Documentation (this feature)

```text
specs/[###-feature]/
├── plan.md              # This file (/speckit.plan command output)
├── research.md          # Phase 0 output (/speckit.plan command)
├── data-model.md        # Phase 1 output (/speckit.plan command)
├── quickstart.md        # Phase 1 output (/speckit.plan command)
├── contracts/           # Phase 1 output (/speckit.plan command)
└── tasks.md             # Phase 2 output (/speckit.tasks command - NOT created by /speckit.plan)
```

### Source Code (repository root)

```text
# Web application (default for this repository)
backend/
├── src/
│   ├── api/               # FastAPI routes
│   ├── core/              # Core services (task_manager, auth, migration, plugins)
│   ├── models/            # SQLAlchemy ORM models
│   ├── services/          # Business logic
│   └── schemas/           # Pydantic schemas
└── tests/                 # pytest tests

frontend/
├── src/
│   ├── routes/            # SvelteKit pages
│   ├── lib/
│   │   ├── components/    # Reusable Svelte 5 components
│   │   ├── stores/        # Svelte rune stores ($state, $derived)
│   │   └── api/           # API client modules
│   └── i18n/              # Internationalization
└── tests/                 # vitest tests

docker/                     # Docker configurations
```

**Structure Decision**: This is a web application with separate `backend/` (Python/FastAPI) and `frontend/` (SvelteKit) directories. Docker Compose orchestrates both services plus PostgreSQL.

## Semantic Contract Guidance

> Use this section to drive Phase 1 artifacts, especially `contracts/modules.md`.

- Classify each planned module/component with `@COMPLEXITY: 1..5`.
- Use comment-anchor syntax appropriate for each context:
  - Python: `# [DEF:id:Type]`
  - Svelte markup: `<!-- [DEF:id:Type] -->`
  - Svelte script: `// [DEF:id:Type]`
- Match contract density to complexity:
  - Complexity 1: anchors only (DTOs, simple constants)
  - Complexity 2: `@PURPOSE` (utility functions, pure helpers)
  - Complexity 3: `@PURPOSE`, `@RELATION`; Svelte components also `@UX_STATE`
  - Complexity 4: `@PURPOSE`, `@RELATION`, `@PRE`, `@POST`, `@SIDE_EFFECT`; Python also `belief_scope`/`reason`/`reflect` markers; Svelte also `@UX_FEEDBACK`, `@UX_RECOVERY`, `@UX_REACTIVITY`
  - Complexity 5: level 4 + `@DATA_CONTRACT`, `@INVARIANT` + `@RATIONALE`/`@REJECTED` decision memory
- Write relations only in canonical form: `@RELATION PREDICATE -> TARGET_ID`
- If any relation target, DTO, or contract dependency is unknown, emit `[NEED_CONTEXT: target]` instead of inventing placeholders.

## Complexity Tracking

> **Fill ONLY if Constitution Check has violations that must be justified**

| Violation | Why Needed | Simpler Alternative Rejected Because |
|-----------|------------|-------------------------------------|
| [e.g., 4th plugin] | [current need] | [why 3 plugins insufficient] |
| [e.g., Service layer pattern] | [specific problem] | [why direct ORM access insufficient] |