Initial commit: clean project structure

- Backend: FastAPI + SQLAlchemy + Celery (Python 3.11+)
- Frontend: Vue 3 + TypeScript + Pinia + Tailwind
- Admin Frontend: separate Vue 3 app for management
- Docker Compose: 9 services orchestration
- Specs: design prototypes, memory system PRD, product roadmap

Cleanup performed:
- Removed temporary debug scripts from backend root
- Removed deprecated admin_app.py (embedded UI)
- Removed duplicate docs from admin-frontend
- Updated .gitignore for Vite cache and egg-info

backend/docs/code_review_report.md

@@ -0,0 +1,14 @@
+# Code Review Report (2nd follow-up)
+
+## What¡¯s fixed
+- Provider cache now loads on startup via lifespan (`app/main.py`), so DB providers are honored without manual reload.
+- Providers support DB-stored `api_key` precedence (`provider_router.py:77-104`) and Provider model added `api_key` column (`db/admin_models.py:25`).
+- Frontend uses `/api/generate/full` and propagates image-failure warning to detail via query flag; StoryDetail displays banner when image generation failed.
+- Tests added for full generation, provider failover, config-from-DB, and startup cache load.
+
+## Remaining issue
+1) **Missing DB migration for new Provider.api_key column**
+   - Files updated model (`backend/app/db/admin_models.py:25`) but `backend/alembic/versions/0001_init_providers_and_story_mode.py` lacks this column. Existing databases will not have `api_key`, causing runtime errors when accessing or inserting. Add an Alembic migration to add/drop `api_key` to `providers` table and update sample data if needed.
+
+## Suggested action
+- Create and apply an Alembic migration adding `api_key` (String, nullable) to `providers`. After migration, verify admin CRUD works with the new field.