Got it! Here's a Notion-style final Dev Checklist—clean, minimal, and readable for tracking your progress. You can copy this into Notion as a toggle list, to-do list, or use it in a web dashboard with minimal HTML.

✅ Final Dev Checklist (Notion Style)

🧩 Dev Task: Interval Update & Card Sync System

🔁 Interval Setup Logic

• [x] Integrate setInterval to auto-refresh API data periodically.
• [x] We need to add the refreh button logic as well. to the code and it working
• [x] Choose appropriate interval time (e.g., 30s, 60s).

🗺 Map Structure for Card Intervals

• [x] Maintain Map<cardId, intervalId> to track intervals.
• [x] On card update:
  • [x] Clear old interval if it exists.
  • [x] Register new interval for updated card.

📥 API Fetching and UI Update

• [x] Fetch latest data inside interval.
• [x] If card DOM element exists:
  • [x] Update its content with new API values.
  • [x] Replace old values without full card re-render.

🔒 Data Accuracy and Clean-Up