Fix Docker build: install build tools globally and skip onnxruntime-node

Dockerfile

@@ -15,8 +15,13 @@ WORKDIR /app
 # Copy entire trigo-web project
 COPY trigo-web/ ./
 
-# Install all dependencies (root, app, backend)
-RUN npm install && \
+# Install build tools globally
+RUN npm install -g tsx jison typescript
+
+# Install dependencies
+# Root: production only (skip onnxruntime-node which requires native compilation)
+# App & Backend: all deps needed for build
+RUN npm install --omit=dev && \
     cd app && npm install && \
     cd ../backend && npm install && \
     cd ..