[Build] feat: implement real-time polling system with loading animation

## GitHub Update **Repository:** [MKWcorp/hrisnextgen](https://github.com/MKWcorp/hrisnextgen) **Author:** multimediadrw **Date:** 10/25/2025, 1:11:58 PM **Commit:** [`b79f382`](https://github.com/MKWcorp/hrisnextgen/commit/b79f382ad26687ec603dca6b645466c75f72d09f) ### Commit Message feat: implement real-time polling system with loading animation - Add status check endpoint (/api/check-status/[batch_id]) - Implement polling logic in goals dashboard (every 3 seconds, max 60 attempts) - Add beautiful loading animation with progress bar and counter - Update N8N_WORKFLOW_SETUP.md with polling system documentation - Create POLLING_SYSTEM.md with comprehensive architecture guide - Create POLLING_IMPLEMENTATION_SUMMARY.md for quick reference - Update goals/analyze route to generate and track batch_id - Fix TypeScript errors in goals/analyze (use goal.users instead of goal.created_by_user) - Add timeout handling (3 minutes) with user-friendly message - Auto-refresh page when analysis completes --- _This story was imported from historical commits._