feat: Frontend CSS refactoring and test improvements

Frontend:
- Refactored CSS architecture with new utility classes
- Updated dashboard components styling
- Improved responsive grid system
- Enhanced typography and variables
- Updated E2E and integration tests

Added:
- Claude Code slash commands for validation
- SSH tunnel and start test scripts

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

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

README.md

@@ -107,12 +107,22 @@ This starts SSH tunnel, backend (port 8001), and frontend (port 3000-3005).
 
 **Key Commands**:
 ```bash
-./ssh_tunnel.sh start                              # Start Oracle DB tunnel
+# Production/Development
+./start-dev.sh start                               # Start all services (production SSH tunnel + Backend + Frontend + Telegram Bot)
+./ssh_tunnel.sh start                              # Start Oracle DB tunnel only (production: 10.0.20.36)
+
+# Testing/Validation (uses Oracle TEST server - LXC 10.0.20.121)
+./start-test.sh start                              # Start all testing services (TEST SSH tunnel + Backend + Frontend + Telegram Bot)
+./ssh-tunnel-test.sh start                         # Start Oracle TEST tunnel only (testing: LXC 10.0.20.121)
+
+# Individual Services
 cd reports-app/backend && uvicorn app.main:app --reload  # Backend (port 8001)
 cd reports-app/frontend && npm run dev             # Frontend (port 3000-3005)
 cd reports-app/telegram-bot && python -m app.main  # Telegram Bot (port 8002)
 ```
 
+**Note**: For automated testing and validation (`/validate` command), use `start-test.sh` which starts all services connected to Oracle TEST server (LXC 10.0.20.121) with test credentials.
+
 **API Documentation** (when backend running):
 - Swagger UI: http://localhost:8001/docs
 - ReDoc: http://localhost:8001/redoc