yumoqing d2210a2996 refactor: use RefreshWidget for stat cards + fix .dspy import violations
Architecture:
- index.ui: title + RefreshWidget(cards) + ChartBar with refresh_period
- RefreshWidget wraps dashboard_cards.dspy → returns full card widget tree
  with live data (cnt, amount, total_users, concurrent_users)
- ChartBar handles its own auto-refresh via refresh_period: 10
- No more JS polling file needed

.dspy import fixes:
- get_today_usage.dspy: remove import json, from datetime import date
- get_user_stats.dspy: remove from datetime import datetime, timedelta
- get_top_models.dspy: remove from datetime import date
- All use pre-loaded datetime module (datetime.date.today(), etc.)
- dashboard_cards.dspy: same pattern, no imports

Permission:
- load_path.py: add dashboard_cards.dspy logined
2026-05-24 16:45:45 +08:00
..