Increases the threshold for rendering diff separators in the CLI's diff display. Previously, a separator was shown for gaps of more than one context line, leading to excessive separators in diffs with many small changes close together (Issue #534).
By increasing `MAX_CONTEXT_LINES_WITHOUT_GAP` to 5, we allow for more context lines before a separator is added, significantly reducing visual clutter in such diffs.
Added a test case to `DiffRenderer.test.tsx` to verify that separators are not rendered for small gaps within the new threshold.
- Adds a visual indicator for skipped lines in the diff view.
- Updates tests to verify gap indicator rendering.
- Adjusts line number padding for better alignment.
Fixes https://b.corp.google.com/issues/414453107
This commit resolves a bug where the `write-file` operation could fail to render content due to a missing filename.
The fix involves:
- Ensuring `fileName` is consistently passed to `DiffRenderer.tsx` through `ToolConfirmationMessage.tsx`, `ToolMessage.tsx`, and `useGeminiStream.ts`.
- Modifying `edit.ts` and `write-file.ts` to include `fileName` in the `FileDiff` object.
- Expanding the `FileDiff` interface in `tools.ts` to include `fileName`.
Additionally, this commit enhances the diff rendering by:
- Adding syntax highlighting based on file extension in `DiffRenderer.tsx`.
- Adding more language mappings to `getLanguageFromExtension` in `DiffRenderer.tsx`.
- Added lots of tests for all the above.
Fixes https://b.corp.google.com/issues/418125982
