[jkyberneees]

Summary

• Changes view (third sidebar tab, ⌘⇧G): every file the branch touched since it left its base branch (working tree included), or only the uncommitted ones, with +/− per file, a one-line summary with a proportional bar and the commit count. Surprises sort first (conflicts, deletions, new files); reviewed rows dim until the file changes again. The scope control appears only when a base branch exists and HEAD has commits on top of it.
• Diff tabs: a virtualized, syntax-highlighted unified diff per file with two line-number columns, collapsed context and expandable gaps; ⌥F5/⌥⇧F5 walk the hunks and move on to the next/previous file; deleted and renamed files open; "Open file" jumps to the live file at its first change. Live: tabs re-diff when the file or the base moves.
• ⌘⇧G and ⌥F5 were advertised in the README and palette but never bound; they are now. The palette's changed-files list is replaced by the view.
• Server: /api/git/changes?scope= (git diff --raw --numstat -z -M, untracked files with streamed line counts, conflicts from ls-files --unmerged, base-branch detection via origin/HEAD → main/master/develop/trunk → upstream, 1,000-file cap) and a validated full-oid rev on /api/git/base.

Design and review

DESIGN.md §15 records the three-panelist design round (interaction, visual, developer-experience) and the adversarial review that followed. Confirmed and fixed, each with a regression test:

• hostile .git/config (diff.orderFile, mailmap.file → /dev/zero) could hang git without bound: -O/dev/null, --no-mailmap, mailmap/bigFileThreshold overrides in HARDEN, 30 s kill timer on every git run
• diff.relative=true blanked the list in a subfolder view: --no-relative
• merge conflicts never appeared (git diff <commit> never emits unmerged entries)
• entries over the cap lost their counts; stale diff-tab status when a file left the list; git rm --cached duplicates; submodules; orphan branch; EOL-only changes
• no coalescing of concurrent changes runs; old blob refetched on every live reload

Test plan

• bun test: 1165 pass (new: servergit.changes, http.changes, client.changes, client.diffview)
• Screenshots of the view, diff tab, hunk stepping across files and light theme via a WebKit snapshot of the running app
• Rebased on 1.6.1; diff tabs get the new dispose() lifecycle

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