feat: scaffold agentic interior design workflow

services/api/app/main.py

@@ -0,0 +1,27 @@
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+
+from app.api.routes import router
+from app.config import get_settings
+
+settings = get_settings()
+
+app = FastAPI(
+    title="AI 空间风格工作台 API",
+    version="0.1.0",
+    description="户型清洗、3D 白模、Style DNA 与多轮编辑的工作流调度接口。",
+)
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=settings.cors_origin_list,
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+app.include_router(router)
+
+
+@app.get("/")
+def root() -> dict[str, str]:
+    return {"service": settings.app_name, "docs": "/docs"}