refactor(semantics): migrate legacy @TIER to @COMPLEXITY annotations

- 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

backend/src/scripts/clean_release_cli.py

@@ -1,5 +1,5 @@
 # [DEF:backend.src.scripts.clean_release_cli:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: cli, clean-release, candidate, artifacts, manifest
 # @PURPOSE: Provide headless CLI commands for candidate registration, artifact import and manifest build.
 # @LAYER: Scripts

backend/src/scripts/clean_release_tui.py

@@ -1,5 +1,5 @@
 # [DEF:backend.src.scripts.clean_release_tui:Module]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: clean-release, tui, ncurses, interactive-validator
 # @PURPOSE: Interactive terminal interface for Enterprise Clean Release compliance validation.
 # @LAYER: UI

backend/src/scripts/create_admin.py

@@ -1,6 +1,6 @@
 # [DEF:backend.src.scripts.create_admin:Module]
 #
-# @TIER:      STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: admin, setup, user, auth, cli
 # @PURPOSE:   CLI tool for creating the initial admin user.
 # @LAYER:     Scripts

backend/src/scripts/migrate_sqlite_to_postgres.py

@@ -1,6 +1,6 @@
 # [DEF:backend.src.scripts.migrate_sqlite_to_postgres:Module]
 #
-# @TIER:      STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: migration, sqlite, postgresql, config, task_logs, task_records
 # @PURPOSE:   Migrates legacy config and task history from SQLite/file storage to PostgreSQL.
 # @LAYER:     Scripts
@@ -36,7 +36,7 @@ DEFAULT_TARGET_URL = os.getenv(
 
 
 # [DEF:_json_load_if_needed:Function]
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @PURPOSE: Parses JSON-like values from SQLite TEXT/JSON columns to Python objects.
 # @PRE: value is scalar JSON/text/list/dict or None.
 # @POST: Returns normalized Python object or original scalar value.

backend/src/scripts/seed_superset_load_test.py

@@ -1,6 +1,6 @@
 # [DEF:backend.src.scripts.seed_superset_load_test:Module]
 #
-# @TIER: STANDARD
+# @COMPLEXITY: 3
 # @SEMANTICS: superset, load-test, charts, dashboards, seed, stress
 # @PURPOSE: Creates randomized load-test data in Superset by cloning chart configurations and creating dashboards in target environments.
 # @LAYER: Scripts