- Count additions/deletions per file as lines are parsed.
- Surface load failures and empty-diff states via StatusMessage.
- Pass the worktree base commit so diffs render against the branch
base, not just the working-tree HEAD.
Adds WorktreeModalView/ViewModel showing git status --porcelain as a
recursive file tree with M/A/D/? status badges. Wires the Worktree
button in AgentStripView to OpenWorktreeCommand on DetailsIslandViewModel.
Adds GetStatusPorcelainAsync to GitService.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
