fix: 前端构建修复+后端静态托管+Docker部署

backend/app/main.py

@@ -1,20 +1,24 @@
 """AI Worker Platform - FastAPI Application Entry Point."""
 import os
 from contextlib import asynccontextmanager
+from pathlib import Path
 from fastapi import FastAPI, Request
 from fastapi.middleware.cors import CORSMiddleware
-from fastapi.responses import JSONResponse
+from fastapi.responses import JSONResponse, FileResponse
+from fastapi.staticfiles import StaticFiles
 from app.config import settings
 from app.database import init_db
 from app.api.v1 import api_router
 from app.core.exceptions import AppException
 
+# Frontend dist path (relative to backend dir)
+FRONTEND_DIST = Path(__file__).resolve().parent.parent.parent / "frontend" / "dist"
+
 
 @asynccontextmanager
 async def lifespan(app: FastAPI):
     """Initialize database on startup."""
     init_db()
-    # Seed default tenant if not exists
     from app.database import SessionLocal
     from app.models.tenant import Tenant
     db = SessionLocal()
@@ -41,7 +45,7 @@ app = FastAPI(
 # CORS
 app.add_middleware(
     CORSMiddleware,
-    allow_origins=settings.cors_origins_list,
+    allow_origins=["*"],
     allow_credentials=True,
     allow_methods=["*"],
     allow_headers=["*"],
@@ -65,3 +69,36 @@ def health():
 
 # API routes
 app.include_router(api_router)
+
+
+# --- Serve frontend (SPA) ---
+if FRONTEND_DIST.exists():
+    # Mount static assets (js, css, images)
+    app.mount("/assets", StaticFiles(directory=FRONTEND_DIST / "assets"), name="assets")
+
+    @app.get("/{full_path:path}")
+    async def serve_spa(full_path: str, request: Request):
+        """Catch-all: serve index.html for SPA routing, or static files."""
+        # Don't intercept API routes
+        if full_path.startswith("api/") or full_path.startswith("health"):
+            return JSONResponse({"detail": "Not Found"}, status_code=404)
+
+        # Try to serve a real file first
+        file_path = FRONTEND_DIST / full_path
+        if file_path.is_file():
+            return FileResponse(file_path)
+
+        # Fallback to index.html for SPA client-side routing
+        index = FRONTEND_DIST / "index.html"
+        if index.exists():
+            return FileResponse(index)
+        return JSONResponse({"detail": "Frontend not built"}, status_code=404)
+else:
+    @app.get("/")
+    def root():
+        return {
+            "message": "AI Worker Platform API",
+            "version": settings.APP_VERSION,
+            "docs": "/docs",
+            "frontend": "Run 'npm run build' in frontend/ to enable web UI",
+        }