fix: improve CI dependency installation

Author: poad

.github/workflows/ci.yml

@@ -27,7 +27,12 @@ jobs:
       name: Install pnpm
 
     - name: Install dependencies
-      run: pnpm install --recursive
+      run: pnpm install -r --no-frozen-lockfile
+
+    - name: Verify workspace links
+      run: |
+        ls -la node_modules/@llm-ts-example/
+        cat node_modules/@llm-ts-example/common-backend-core/package.json
 
     - name: Build
       run: |