This change simplifies the patch mechanism by replacing the unified diff format with a straightforward find-and-replace approach. The PatchVaultFile function now accepts oldContent and newContent parameters instead of a diff patch string, making it more intuitive and reliable for AI agents to use.
Key changes:
- Update PatchVaultFile function signature and documentation
- Replace diff.applyPatch() with String.replace()
- Simplify error handling for content matching
- Update all tests to reflect new API
- Remove unused applyPatch method from DiffService
- Fix diff container height calculation in CSS
- Fix error notification logic in ChatService
- Fix conversation deletion order in TopBar component
Implements unified diff patching as an alternative to WriteVaultFile for making targeted changes without replacing entire files. Includes new PatchVaultFile AI function, DiffService.applyPatch method, and comprehensive test coverage.
