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/app/admin_main.py

@@ -0,0 +1,61 @@
+from contextlib import asynccontextmanager
+
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+
+from app.api import admin_providers, admin_reload
+from app.core.config import settings
+from app.core.logging import get_logger, setup_logging
+from app.db.database import init_db
+
+setup_logging()
+logger = get_logger(__name__)
+
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    """Admin App lifespan manager."""
+    logger.info("admin_app_starting")
+    await init_db()
+
+    # 可以在这里加载特定的 Admin 缓存或预热
+
+    yield
+    logger.info("admin_app_shutdown")
+
+
+app = FastAPI(
+    title=f"{settings.app_name} Admin Console",
+    description="Administrative Control Plane for DreamWeaver.",
+    version="0.1.0",
+    lifespan=lifespan,
+)
+
+# Admin 后台通常允许更宽松的 CORS，或者特定的管理域名
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=settings.cors_origins, # 或者专门的 ADMIN_CORS_ORIGINS
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+# 根据配置开关挂载路由
+if settings.enable_admin_console:
+    app.include_router(admin_providers.router, prefix="/admin", tags=["admin-providers"])
+    app.include_router(admin_reload.router, prefix="/admin", tags=["admin-reload"])
+else:
+    @app.get("/admin/{path:path}")
+    @app.post("/admin/{path:path}")
+    @app.put("/admin/{path:path}")
+    @app.delete("/admin/{path:path}")
+    async def admin_disabled(path: str):
+        from fastapi import HTTPException
+        raise HTTPException(
+            status_code=403,
+            detail="Admin console is disabled in environment configuration."
+        )
+
+@app.get("/health")
+async def health_check():
+    return {"status": "ok", "service": "admin-backend"}