feat(git): inline file diffs in commit history rows (#1291)

* chore: add .worktrees/ to gitignore for worktree workflow

* feat(git): add getCommitFileDiff service function

* docs(git): document getCommitFileDiff in module docs

* feat(git): add GET /api/git/commit-file-diff route

* feat(git): add CommitFileDiffResponse type and GitAPI method signature

* feat(git): add getCommitFileDiff HTTP client function

* feat(git): add getCommitFileDiff API facade

* feat(git): add getCommitFileDiff stub to VS Code bridge

* feat(git): add getCommitFileDiff to VS Code gitService and bridge handler

* feat(git): add inline file diff to history commit rows

* fix(git): consolidate CommitFileDiffResponse import to gitApi facade

* fix(git): pass directory through history, validate hash, propagate git errors

* fix(git): use exit code check for VS Code getCommitFileDiff error detection

* fix(git): VS Code rename detection, hash validation parity, retry on error

* fix(git): register scroll container as virtualizer root to fix empty space in history diffs

* fix(git): address greptile review — rename key extraction, directory guard, language detection, isBinary cleanup

* fix(git): harden history inline diffs

---------

Co-authored-by: Bohdan Triapitsyn <artmore@protonmail.com>

packages/ui/src/lib/gitApiHttp.ts

@@ -25,6 +25,7 @@ import type {
   GitLogOptions,
   GitLogResponse,
   GitCommitFilesResponse,
+  CommitFileDiffResponse,
   GitIdentityProfile,
   GitIdentitySummary,
   DiscoveredGitCredential,
@@ -681,6 +682,25 @@ export async function getCommitFiles(
   return response.json();
 }
 
+export async function getCommitFileDiff(
+  directory: string,
+  hash: string,
+  filePath: string,
+  isBinary: boolean
+): Promise<CommitFileDiffResponse> {
+  const response = await fetch(
+    buildUrl(`${API_BASE}/commit-file-diff`, directory, {
+      hash,
+      path: filePath,
+      binary: isBinary ? 'true' : undefined,
+    })
+  );
+  if (!response.ok) {
+    throw new Error(`Failed to get commit file diff: ${response.statusText}`);
+  }
+  return response.json();
+}
+
 export async function getGitIdentities(): Promise<GitIdentityProfile[]> {
   const response = await fetch(buildUrl(`${API_BASE}/identities`, undefined));
   if (!response.ok) {