[KieranP]

A worktree's changes could only be read as totals on its sidebar badge. The panel lists every file, ignored ones greyed, from one per-file list that every status read now produces, so the panel, the badge, its tooltip, the removal dialog and the command line count alike. A file opens read-only in a tab beside the terminals, its changes against HEAD drawn unified or split in a TextKit 2 view whose row geometry is forced, as plain TextKit 2 drifted split sides thousands of rows apart.

• Highlight 22 languages through tree-sitter grammar packages, copying only the three scanners whose packages build without them
• Save Unified or Split as one setting every tab follows, a file only added to or removed from staying Unified
• Paint find matches with the line tints, which redraw as a search is typed where TextKit 2 rendering attributes did not
• Keep a panel's listing while only counts move, and only for the worktree it shows
• Report file tabs, with kind, path and isDeleted, in tabs list and tabs show, and their text in debug memory

What this does

What I ran

• make format
• make lint
• make test
• make build

What I could not verify:

Docs

• A design note under Docs/design/ if this changes a decision, or the
  reason it does not need one.
• An entry in BUGS.md if this leaves a gap rather than closing it, tagged
  [Unconfirmed] if nobody has watched it go either way.