feat: add Penpot MCP to docker-compose.yml

Add penpot-mcp service for design collaboration platform.
Configure PENPOT_URL and PENPOT_TOKEN environment variables.

💘 Generated with Crush

Assisted-by: GLM-4.7 via Crush <crush@charm.land>

docker-compose.yml

@@ -424,3 +424,20 @@ services:
       - "8085:8080"
     profiles:
       - dev
+
+  # ==========================================
+  # Design Tools (Added Later)
+  # ==========================================
+
+  # Penpot MCP - Design collaboration platform
+  penpot-mcp:
+    build:
+      context: ./vendor/penpot-mcp
+      dockerfile: Dockerfile
+    container_name: KNELDevStack-AIMW-penpot-mcp
+    restart: unless-stopped
+    environment:
+      - PENPOT_URL=${PENPOT_URL:-https://design.penpot.app}
+      - PENPOT_TOKEN=${PENPOT_TOKEN}
+    profiles:
+      - dev