Add audit logging for CRUD operations

- Extend audit.service.js with logging functions for projects, todos, companies, time tracking, and auth
- Create audit.controller.js for fetching recent audit logs with user info
- Create audit.routes.js with GET /api/audit-logs endpoint
- Add audit logging to project, todo, company, time-tracking, and auth controllers
- Log create/delete operations for projects, todos, companies
- Log timer start/stop for time tracking
- Log login/logout events

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

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

src/routes/audit.routes.js

@@ -0,0 +1,9 @@
+import { Router } from 'express';
+import { getRecentAuditLogs } from '../controllers/audit.controller.js';
+import { authenticate } from '../middlewares/auth/authMiddleware.js';
+
+const router = Router();
+
+router.get('/', authenticate, getRecentAuditLogs);
+
+export default router;