* feat: add /undo, /redo, /timeline slash commands and fork button
- Add /undo command to revert to previous user message
- Add /redo command to redo previously undone messages
- Add /timeline command to show conversation history
- Add fork button on user messages (hover) to create new session
- Add TimelineDialog component for navigating conversation history
- Show undo/redo/timeline in autocomplete when session exists
- Fix fork to use SDK session.fork API
- Silent no-op behavior for undo/redo when no messages (matches OpenCode CLI)
* fix: correct fork session endpoint and session switching
- Add hybrid SDK approach using v1 for existing methods and v2 for fork only
- v2 SDK has correct endpoint /session/{sessionID}/fork instead of broken /session/{id}/fork
- Fix forkFromMessage to use setCurrentSession instead of direct set
- Ensures both useSessionStore and useSessionManagementStore are consistent
- Fixes issue where forked sessions appeared empty until sending a new message
* fix: use direct fetch for fork to avoid v2 SDK build errors
- Remove v2 SDK imports and hybrid SDK approach
- Use direct fetch() call to /api/session/{sessionID}/fork endpoint
- Avoids type conflicts between v1 and v2 SDK
- Bypasses broken v1 SDK fork endpoint (wrong path parameter)
- All codebase now uses v1 SDK consistently
* fix: use jsonc-parser for config file parsing
- Replace strip-json-comments + JSON.parse with jsonc-parser
- Handles comments, trailing commas, and unquoted keys
- Matches OpenCode CLI config parsing behavior
- Fixes SyntaxError when reading global opencode.json config
* feat: improve timeline dialog with loading state and search
- Add loading spinner on fork button during operation (~30s on big sessions)
- Refresh session list after fork so new session appears in sidebar immediately
- Add search bar to filter messages by prompt text content
- Show 'No messages found' when search has no results
- Disable fork button while forking to prevent duplicate operations
* feat(terminal): replace xterm with ghostty-web
Replace xterm.js terminal with ghostty-web implementation
Add terminal serialization support for state restoration
Apply custom patches to ghostty-web for enhancements
* feat(terminal): add bun-pty backend support
Switch terminal to ghostty-web with bun-pty backend for better performance
Auto-detect and prefer Bun runtime when available for terminal sessions
Update terminal viewport write queue handling for improved reliability
* fix(terminal): prevent unnecessary resize events
Only report terminal resize when dimensions actually change
Simplify chunk processing state tracking
Disable terminal transparency for consistent rendering
* feat(terminal): increase scrollback and buffer limits
Increase terminal scrollback buffer from 10k to 50k lines
Increase terminal buffer limit from 256k to 1M bytes
Add rate limiting and improve output handling for terminal streams