fix: address review findings for Render deployment

- Switch agent from langgraph dev to production Docker image (langchain/langgraph-api)
- Add health check endpoint (/ok) for agent private service
- Add turbo.json to frontend buildFilter to prevent stale builds
- Add Dockerfile.agent for production agent builds
- Revert serverId to example_mcp_app for traceability

Author: GeneralJerel

apps/app/src/app/api/copilotkit/route.ts

@@ -62,7 +62,7 @@ export const POST = async (req: NextRequest) => {
           servers: [{
             type: "http",
             url: process.env.MCP_SERVER_URL,
-            serverId: "mcp_app",
+            serverId: "example_mcp_app",
           }],
         },
       }),

docker/Dockerfile.agent

@@ -0,0 +1,18 @@
+FROM langchain/langgraph-api:3.12
+
+ADD apps/agent /deps/agent
+
+RUN for dep in /deps/*; do \
+        echo "Installing $dep"; \
+        if [ -d "$dep" ]; then \
+            (cd "$dep" && PYTHONDONTWRITEBYTECODE=1 uv pip install --system --no-cache-dir -c /api/constraints.txt -e .); \
+        fi; \
+    done
+
+ENV LANGSERVE_GRAPHS='{"sample_agent": "/deps/agent/main.py:graph"}'
+
+RUN mkdir -p /api/langgraph_api /api/langgraph_runtime /api/langgraph_license \
+    && touch /api/langgraph_api/__init__.py /api/langgraph_runtime/__init__.py /api/langgraph_license/__init__.py
+RUN PYTHONDONTWRITEBYTECODE=1 uv pip install --system --no-cache-dir --no-deps -e /api
+
+WORKDIR /deps/agent

render.yaml

@@ -2,21 +2,19 @@ services:
   # ── Agent (LangGraph Python) — private, not exposed to internet ──
   - type: pserv
     name: open-generative-ui-agent
-    runtime: python
+    runtime: docker
     plan: starter
-    rootDir: apps/agent
-    buildCommand: "pip install uv && uv sync --frozen"
-    startCommand: "uv run langgraph dev --host 0.0.0.0 --port $PORT --no-browser --no-reload"
+    dockerfilePath: docker/Dockerfile.agent
+    healthCheckPath: /ok
     envVars:
-      - key: PYTHON_VERSION
-        value: "3.12"
       - key: OPENAI_API_KEY
         sync: false
       - key: LANGSMITH_API_KEY
         sync: false
     buildFilter:
       paths:
         - apps/agent/**
+        - docker/Dockerfile.agent
 
   # ── Frontend (Next.js) — public web service ──
   - type: web
@@ -37,4 +35,5 @@ services:
         - apps/app/**
         - package.json
         - pnpm-lock.yaml
+        - turbo.json
         - docker/Dockerfile.app