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/gitApi.ts

@@ -36,6 +36,7 @@ export type {
   GitMergeResult,
   GitRebaseResult,
   MergeConflictDetails,
+  CommitFileDiffResponse,
 } from './api/types';
 
 declare global {
@@ -642,6 +643,17 @@ export async function getCommitFiles(
   return gitHttp.getCommitFiles(directory, hash);
 }
 
+export async function getCommitFileDiff(
+  directory: string,
+  hash: string,
+  filePath: string,
+  isBinary: boolean
+): Promise<import('./api/types').CommitFileDiffResponse> {
+  const runtime = getRuntimeGit();
+  if (runtime?.getCommitFileDiff) return runtime.getCommitFileDiff(directory, hash, filePath, isBinary);
+  return gitHttp.getCommitFileDiff(directory, hash, filePath, isBinary);
+}
+
 export async function getGitIdentities(): Promise<import('./api/types').GitIdentityProfile[]> {
   const runtime = getRuntimeGit();
   if (runtime) return runtime.getGitIdentities();