fix: GitHub Actions workflow - correct workspace commands

The workflow was using npm workspace commands (-w web) but the repository
doesn't have a root package.json configured for workspaces. Updated to use
working-directory instead to properly execute commands in the web directory.

Changes:
- Install dependencies: npm ci in web directory
- Run linter: npm run lint in web directory
- Run tests: npm run test in web directory
- Build project: npm run build in web directory

This fixes the "No workspaces found" error that was causing the workflow to fail.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

.github/workflows/quality-gate.yml

@@ -33,20 +33,20 @@ jobs:
             ${{ runner.os }}-node-
 
       - name: Install dependencies
-        # Use workspace root package-lock.json
+        working-directory: ./web
         run: npm ci
 
       - name: Run Linter
-        # Use web workspace for linting
-        run: npm run lint -w web
+        working-directory: ./web
+        run: npm run lint
 
       - name: Run Tests
-        # Use web workspace for testing
-        run: npm run test -w web -- --run
+        working-directory: ./web
+        run: npm run test
 
       - name: Build Project
-        # Use web workspace for building
-        run: npm run build -w web
+        working-directory: ./web
+        run: npm run build
 
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