Session diffs now use a compact patch field instead of storing full
before/after content. Added parsePatchToBeforeAfter utility to extract
before/after from unified diff format, and updated MonacoDiffViewer to
accept patch prop as alternative to before/after strings.
## Summary
- Adds file writing capability to Monaco editor in the file viewer
- Implements writeFile API on the server for workspace files
- Integrates save functionality into the file viewer UI with proper
state management
## Bug Fixes (Review Feedback)
- Fixed failed save discarding edits when switching files - now checks
save result and only proceeds if successful
- Fixed refresh overwriting dirty editor state - now prompts for
confirmation before discarding edits
- Fixed save button unable to save empty files - changed check from `if
(content)` to `if (content !== undefined && content !== null)`
- Added agent edit conflict detection - when agent edits file while user
has unsaved changes, shows conflict dialog with Overwrite/Cancel options
- Fixed dialog appearing behind unpinned sidebar - increased alert
dialog z-index to z-100
## Related Issues
- Closes#251
---------
Co-authored-by: Jess Chadwick <jchadwick@gmail.com>
- Set diffAlgorithm to 'legacy' for Monaco DiffEditor
- Add maxComputationTime of 10s to avoid UI freeze on huge files
This addresses the issue where sessions with large JSON files (50k-100k+ lines)
would cause the UI to freeze. The 'legacy' algorithm is faster than 'advanced'
for large files, similar to VSCode's workaround for the same issue.
See: https://github.com/microsoft/vscode/issues/184037
Replace split/unified and context controls with icon toggles, add a word-wrap toggle (default on), and move the toolbar into the tab header to free vertical space.
Use OpenCode v2 file APIs for browsing and Monaco DiffEditor for session snapshot diffs, with local baseline language metadata and optional CDN language loading.
