fix(test): Add .gitignore and update tsconfig after migration

- Add .gitignore to plugins/ui5/ (required by structure tests)
- Update moduleResolution to 'bundler' (modern TypeScript)
- Update package-lock.json with installed dependencies
- All structure tests now pass (14/14)
- Triggering simulation tests: 84.4% (proxy tests, not real Claude behavior)

Author: d3xter666

plugins/ui5/.gitignore

@@ -0,0 +1,20 @@
+# Build output
+dist/
+
+# Dependencies
+node_modules/
+
+# Test output
+.test-output/
+.test-results/
+
+# Environment
+.env
+.env.local
+
+# IDE
+.vscode/
+.idea/
+
+# OS
+.DS_Store