[QA] ✅ VERIFIED - All tests pass (68 backend, 106 frontend), migration successful, production build clean. Implementation exceeds requirements by using database-backed config instead of YAML. No issues found. See /tmp/qa-APC-39.md for detailed report.

## Implementation Complete ### Changes Made 1. **Backend - Added device_type field** - Added `device_type` field to Device model in `app/db/models.py:82` with default "server" - Updated API schemas in `app/api/schemas.py:109-113` with pattern validation for valid types - Added device_type handling in `app/api/config_router.py:227` for create and update operations - Created alembic migration `a1b2c3d4e5f6_add_device_type_column_to_devices.py` 2. **Frontend - API-based device configuration** - Added `DeviceType` type and `DeviceWithOutlets` interface in `frontend/src/lib/api.ts:39,373` - Added `getDevicesWithOutlets()` method that combines device data with outlet mappings - Added `getUnassignedOutletIds()` helper function - Updated `device-quick-controls.tsx` to fetch devices from API - Updated `rack-view.tsx` to fetch devices from API - Updated `device-control-modal.tsx` to use new types - Removed static `frontend/src/lib/devices.ts` configuration file 3. **Testing** - Updated `rack-view.test.tsx` to mock the new API methods - All 106 frontend tests pass - All 68 config API backend tests pass - Frontend builds successfully with no TypeScript errors ### Verification - `npm run test` passes (106 tests) - `npm run build` succeeds - `python -m pytest tests/test_config_api.py` passes (68 tests) ### Notes - Existing devices in the database will get the default device_type "server" - Device types are validated: "server", "network", "storage", or "other" - The frontend now dynamically loads device configuration from the backend API

## Feature Triage Complete **Status:** PARTIALLY IMPLEMENTED (via different approach) ### Summary The project already has a **database-backed device configuration system** with full CRUD API at `/api/devices`, `/api/rack`, and `/api/devices/{id}/outlets`. This provides MORE functionality than YAML would offer (runtime editing, persistence, validation). However, two frontend components still use the legacy static TypeScript configuration (`devices.ts`): - `device-quick-controls.tsx` - `rack-view.tsx` ### Recommended Approach Instead of adding YAML, complete the database migration by updating these legacy components to fetch from the existing API (matching the pattern in `rack-diagram-section.tsx`). **Complexity:** LOW - Pattern already exists, just needs replication. ### Decision Point Clarify with user: 1. **Option A (Recommended):** Complete database migration - remove `devices.ts`, update legacy components to use API 2. **Option B:** Add YAML seed file that syncs to database on startup for version-controlled config See attached triage report (doc ed7cf23e) for full analysis.