AI Implementation feature(893): Admin Area General Settings and Categories 1.11 (#33)

docs/architecture/key-files.md

@@ -2,8 +2,8 @@
 type: architecture
 title: Key Files Index
 description: One-line responsibility for important source and contract-test files, including strict event-window validation and the public bootstrap SSE listener.
-tags: [architecture, key-files, event-window, validation, default-challenge-ip, sse, bootstrap]
-timestamp: 2026-07-22T16:15:00Z
+tags: [architecture, key-files, event-window, validation, default-challenge-ip, sse, bootstrap, migrations]
+timestamp: 2026-07-22T16:44:54Z
 ---
 
 # Backend
@@ -13,7 +13,8 @@ timestamp: 2026-07-22T16:15:00Z
 | `backend/src/main.ts` | Bootstraps Nest, middleware, OpenAPI, static assets, and SPA fallback. |
 | `backend/src/app.module.ts` | Wires feature modules and global providers. |
 | `backend/src/database/database.module.ts` | Configures TypeORM with SQLite. |
-| `backend/src/database/database-init.service.ts` | Initializes the database and runs migrations. |
+| `backend/src/database/database-init.service.ts` | Initializes the database and runs migrations; `verifySeed()` also asserts the canonical six system-category keys and reports missing/duplicate rows. |
+| `backend/src/database/migrations/1700000000400-RepairCategorySchemaAndSystemCategories.ts` | Forward-only repair migration: adds `created_at`/`updated_at` to legacy six-column `category` tables, deletes obsolete `FOR`/`OSI` system rows, rewrites canonical row metadata, inserts any missing canonical key, and re-asserts unique indexes. Exports `CANONICAL_SYSTEM_CATEGORIES`. |
 | `backend/src/common/guards/jwt-auth.guard.ts` | Global JWT authorization guard. |
 | `backend/src/common/middleware/csrf.middleware.ts` | Double-submit CSRF protection. |
 | `backend/src/common/services/event-status.service.ts` | Computes the event-window state machine. |