[Feat] Render 배포 및 PostgreSQL 마이그레이션

.gitignore

@@ -231,3 +231,12 @@ assist-frontend/public/swe-worker-*.js
 assist-frontend/public/workbox-*.js
 assist-frontend/public/workbox-*.js.map
 scripts/eval/results/*.md
+
+# AI Coding Assistants / code-review-graph
+.cursorrules
+.mcp.json
+.opencode.json
+.windsurfrules
+AGENTS.md
+CLAUDE.md
+GEMINI.md

pyproject.toml

@@ -23,6 +23,7 @@ dependencies = [
     "python-jose[cryptography]>=3.3",
     "bcrypt>=4.0",
     "email-validator>=2.0",
+    "psycopg2-binary>=2.9.11",
 ]
 
 [project.optional-dependencies]

render.yaml

@@ -1,3 +1,9 @@
+databases:
+  - name: assist-db
+    plan: free
+    databaseName: assist
+    user: assist
+
 services:
   - type: web
     name: assist-api
@@ -8,6 +14,12 @@ services:
     envVars:
       - key: OPENAI_API_KEY
         sync: false
+      - key: SECRET_KEY
+        sync: false
+      - key: DATABASE_URL
+        fromDatabase:
+          name: assist-db
+          property: connectionString
       - key: CHROMA_DB_PATH
         value: ./data/chroma
       - key: PYTHON_VERSION

src/db/database.py

@@ -7,15 +7,20 @@
 
 from src.core.config import settings
 
-if settings.DATABASE_URL.startswith("sqlite"):
-    db_path = settings.DATABASE_URL.replace("sqlite:///", "")
+database_url = settings.DATABASE_URL
+# Render provides "postgres://" but SQLAlchemy requires "postgresql://"
+if database_url.startswith("postgres://"):
+    database_url = database_url.replace("postgres://", "postgresql://", 1)
+
+if database_url.startswith("sqlite"):
+    db_path = database_url.replace("sqlite:///", "")
     Path(db_path).parent.mkdir(parents=True, exist_ok=True)
 
 engine = create_engine(
-    settings.DATABASE_URL,
+    database_url,
     connect_args=(
         {"check_same_thread": False}
-        if settings.DATABASE_URL.startswith("sqlite")
+        if database_url.startswith("sqlite")
         else {}
     ),
 )

src/main.py

@@ -187,7 +187,10 @@ async def lifespan(app: FastAPI):
 
 app.add_middleware(
     CORSMiddleware,
-    allow_origins=["http://localhost:3000"],
+    allow_origins=[
+        "http://localhost:3000",
+        "https://assist-frontend-plum.vercel.app",
+    ],
     allow_methods=["GET", "POST", "OPTIONS"],
     allow_headers=["*"],
 )