perf: optimize command palette search workflow

[ash1shkumar]

📝 Description

This PR improves command palette responsiveness by introducing a reusable command search preparation layer and optimizing command lookup operations.

Previously, command filtering performed normalization and lookup processing directly during interactive search operations. As the number of available commands grows, repeated traversal and string transformation operations can introduce unnecessary client-side computation during active typing.

Changes Implemented

• Introduced reusable command search preparation helper
• Added precomputed searchable command registry
• Centralized command lookup preprocessing
• Reduced repeated string normalization during search operations
• Improved separation between search preparation and search execution
• Enhanced maintainability of command palette filtering workflows

Benefits

• Improved command search responsiveness
• Reduced repeated filtering overhead
• Lower client-side processing during typing
• Better scalability for larger command registries
• Cleaner search architecture
• Improved maintainability and extensibility

🎯 Type of Change

• Refactoring
• Performance Improvement
• Code Quality Improvement

✅ Testing

• Verified command palette opens and closes correctly
• Verified keyboard shortcut behavior remains unchanged
• Verified command search results remain accurate
• Verified command navigation using arrow keys remains functional
• Verified Enter key command execution remains functional
• Verified recent commands functionality remains intact
• Verified command filtering behavior remains unchanged
• Verified search performance optimization introduces no UI regressions

Fixes #210

Expected Labels

level3 NSoC'26

[vercel]

@ash1shkumar is attempting to deploy a commit to the shreemp194-gmailcom's projects Team on Vercel.

A member of the Team first needs to authorize it.

[github-actions]

👋 Thank you for opening this pull request! I will review your changes and assist you soon.