Updates
- Viewport-limited highlighting. The highlight and indent queries now run only against the visible row window instead of walking the whole syntax tree every frame. Editing or scrolling one frame of a 100k-line file drops from ~14.8 ms to ~62 µs in release builds.
- Memoized redraws. Captures are cached per document version and visible range, so pure redraws — cursor moves, mode changes, toast expiry — skip the highlight query entirely (~1.2 µs). Injected sub-language blocks (for example, fenced code in Markdown) are cached by region content instead of being re-parsed each frame.
- Off-thread git baseline. The
HEADblob lookup that powers the gutter diff moved off the file-open path onto a worker thread, so opening a file no longer blocks the first paint on git subprocesses — the diff markers fill in a frame later.