feat: Integrate Staticcheck Pre-Commit Hook and Update QA Report

- Updated current specification to reflect the integration of Staticcheck into pre-commit hooks.
- Added problem statement, success criteria, and implementation plan for Staticcheck integration.
- Enhanced QA validation report to confirm successful implementation of Staticcheck pre-commit blocking.
- Created new Playwright configuration and example test cases for frontend testing.
- Updated package.json and package-lock.json to include Playwright and related dependencies.
- Archived previous QA report for CI workflow documentation updates.

README.md

@@ -183,6 +183,11 @@ docker run -d \
 
 > **Note:** If you encounter errors after upgrading, try a hard refresh (`Ctrl+Shift+R`) or clearing your browser cache. See [Troubleshooting Guide](docs/troubleshooting/react-production-errors.md) for details.
 
+### Development Setup
+
+**Install golangci-lint** (for contributors): `go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest`
+See [CONTRIBUTING.md](CONTRIBUTING.md) for complete development environment setup.
+
 ### Upgrading? Run Migrations
 
 If you're upgrading from a previous version with persistent data: