diffhub@0.2.0

Minor Changes

• 975bef7: Migrate the diff viewer to the virtualization-first CodeView component from
  @pierre/diffs (upgraded to 1.2.4). The entire change set now renders in a
  single virtualized surface that scales to thousands of files, replacing the
  per-file PatchDiff loop and the hand-rolled scale layer (scroll anchoring,
  min-height pinning, IntersectionObserver activation, and deferred-render
  placeholders) — all of which CodeView now owns natively. Comments, split/
  unified layout, theming, collapse/expand, and sidebar navigation are preserved.

• 43a7524: Migrate the file-tree sidebar to the virtualization-first FileTree from
  @pierre/trees, replacing the hand-rolled tree (manual tree-building, folder
  compaction, and per-row rendering) with a single virtualized surface that scales
  to thousands of files. Git-status colouring, VS Code-style folder compaction,
  comment-count badges, filter search, and scroll-driven active-file sync are
  preserved and mapped onto the package's native model API.

  The sidebar is rebuilt to full "Diffs and Trees" parity: a toolbar (file
  tree / comments-only / search), collapsible Diff Stats (F2) and System
  Monitor (F3) panels driven by the existing diff stats and file-watcher status,
  and a "Powered by Diffs and Trees" footer.

Patch Changes

• 1f65c95: Refine the diff toolbar: merge the "Live" status pill and refresh button into a
  single status dot that doubles as force-refresh (showing a spinner while
  updating), use action-convention icons for the collapse/expand and split/unified
  toggles so each icon matches its tooltip, and default the sidebar to expanded on
  launch.