v0.30.0: Hidden file search, session search, image indicators, and ESC key fixes

New features

- Search hidden files - Grep and Glob tools now include hidden files in search results
- Session search - Added search functionality to the session selector for quickly finding sessions
- Image indicator - User messages now display an image indicator when images are attached

Bug fixes

- Fixed EPERM permission errors on certain file operations - Windows file rename retry logic
- Fixed ESC key navigation in /review and /bg-process commands for Ghostty terminal
- MCP registry updates