## Summary
- **Fix git window "Not a git repository" error** — The working directory received from Claude Code is a WSL Linux path (e.g. `/home/naomi/...`), but git commands were being run as native Windows processes with `.current_dir()`. Windows can't resolve WSL paths, causing `git rev-parse --git-dir` to fail. Fixed by routing git commands through `wsl -- git -C <path>` when the working directory starts with `/`.
- **Add syntax highlighting and line numbers to diff view** — Replaced the raw `<pre>` block with a proper `DiffViewer` component featuring:
- Old/new line number columns with correct tracking across hunks
- Colour-coded gutter (`+`/`-`) with green/red row backgrounds
- Syntax highlighting via `highlight.js` using the detected file language, respecting all app themes via `--hljs-*` CSS variables
- Styled hunk headers and file headers
## New files
- `src/lib/utils/diffParser.ts` — pure diff parsing logic
- `src/lib/utils/diffParser.test.ts` — 30 tests covering all line types, line number tracking, and language detection
- `src/lib/components/DiffViewer.svelte` — the pretty diff viewer component
✨ This pull request was created with help from Hikari~ 🌸
Reviewed-on: #178
Co-authored-by: Hikari <hikari@nhcarrigan.com>
Co-committed-by: Hikari <hikari@nhcarrigan.com>
