fix: update discourse-mcp to use Node.js 24 alpine image

- Changed from build context to using node:24-alpine image directly
- Updated discourse-mcp Dockerfile to node:24-alpine
- Changed npm ci to npm install in Dockerfile
- Added note about npx usage due to TypeScript compilation errors in 0.2.4

docker-compose.yml

@@ -221,10 +221,9 @@ services:
   # ==========================================
 
   # Discourse MCP - Forum integration
+  # Note: Using npx directly due to TypeScript compilation errors in 0.2.4
   discourse-mcp:
-    build:
-      context: ./vendor/discourse-mcp
-      dockerfile: Dockerfile
+    image: node:24-alpine
     container_name: KNELDevStack-AIMiddleware-discourse-mcp
     restart: unless-stopped
     environment: