T19 Git: diffs unified and split with word marks and folds, three-way merge and conflict resolver, changes list and commit input, commit graph and list, branch selector, branch, tag and stash lists, blame with annotation, file history, pull request card, review thread, diff stat and status badge

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tasks/ch11-20.md

@@ -358,24 +358,24 @@
 
 ## T19 Git — `src/git`
 
-- [ ] DiffViewer — split, unified
-- [ ] InlineDiff → `editor::InlineDiff`
-- [ ] ThreeWayMerge
-- [ ] ConflictResolver
-- [ ] ChangesList
-- [ ] CommitInput
-- [ ] CommitGraph
-- [ ] CommitList / CommitItem
-- [ ] BranchSelector
-- [ ] BranchList
-- [ ] TagList
-- [ ] StashList
-- [ ] BlameView / GitBlameAnnotation
-- [ ] FileHistory
-- [ ] PullRequestCard
-- [ ] ReviewComment
-- [ ] DiffStat
-- [ ] GitStatusBadge
+- [x] DiffViewer — split, unified
+- [x] InlineDiff → `editor::CodeEditor::set_diff`
+- [x] ThreeWayMerge
+- [x] ConflictResolver
+- [x] ChangesList
+- [x] CommitInput
+- [x] CommitGraph → `git::CommitList::graph`
+- [x] CommitList / CommitItem
+- [x] BranchSelector
+- [x] BranchList
+- [x] TagList
+- [x] StashList
+- [x] BlameView / GitBlameAnnotation
+- [x] FileHistory
+- [x] PullRequestCard
+- [x] ReviewComment
+- [x] DiffStat
+- [x] GitStatusBadge
 
 ## T20 Debug — `src/debug`