♻️ Add email attachment processing and change raw column to text type

✨ Add email attachment handling and improve raw column storage 🔧 Extend grace period for new users from 3 to 7 days before reminders 🔨 Refactor entry views by consolidating templates and improving layout 💄 Improve reminder time calculation with timezone support 💄 Change reminder time label to just time in author form 🚚 Move coding guidelines to .windsurf/rules directory