Wrap parsePatch calls in try-catch blocks to gracefully handle malformed
diffs that can occur when undoing after tool_use/tool_result errors or
cancelled prompts. Prevents TUI from crashing with 'Added line count did not
match for hunk' error.
Fixes#3700
- Add /rename command to autocomplete when a session is active
- Add rename dialog component for changing session names
- Add rename option to session list dialog with 'r' keybind
- Add session rename command to command registry