enhancement: better global search

[ihabadham]

Proposal: Optimization & Advanced Features for Search

(this is only about the search bar in dashboard header, not the other feature-specific ones)

Focusing on transforming our search from just functional to truly exceptional with advanced features and optimizations:

1. Result Caching with React Query

   • Implement React Query for search results caching
   • Add stale-while-revalidate pattern to show cached results immediately
   • Set up intelligent invalidation strategies

2. Advanced Filtering & Sorting

   • Add date range filters ("this week", "this month", etc.)
   • Implement status-based filtering (e.g., only "Todo" tasks)
   • Add sorting options (newest, oldest, relevance)
   • Create visual filter UI with badges/chips

3. Command Palette Mode

   • Add "/" keyboard shortcut to focus search
   • Support command syntax (e.g., "task:", "note:", "due:", "today")
   • Add quick action commands (e.g., "new task", "new note")
   • Implement keyboard-driven interface (Tab to sections, Enter to select)

4. Performance Optimizations

   • Implement cursor-based pagination with "load more" functionality
   • Add search term highlighting in results
   • Use virtualized lists for handling large result sets
   • Implement search analytics to show recent/common searches