fix: clarify sync button and result toasts

Show sync label when no remote changes are known
Report pulled file counts in sync success toasts
Count pulled files correctly in VS Code sync

packages/vscode/src/gitService.ts

@@ -2380,6 +2380,7 @@ export async function gitPull(
   }
 
   // Fallback to raw git
+  const beforeHead = await execGit(['rev-parse', 'HEAD'], directory);
   const args = ['pull'];
   if (options?.rebase === true) args.push('--rebase');
   if (options?.remote) args.push(options.remote);
@@ -2389,11 +2390,20 @@ export async function gitPull(
   if (result.exitCode !== 0) {
     throw new Error(result.stderr.trim() || result.stdout.trim() || 'Failed to pull from remote');
   }
-  
+  const afterHead = await execGit(['rev-parse', 'HEAD'], directory);
+  const before = beforeHead.exitCode === 0 ? beforeHead.stdout.trim() : '';
+  const after = afterHead.exitCode === 0 ? afterHead.stdout.trim() : '';
+  const changedFiles = before && after && before !== after
+    ? await execGit(['diff', '--name-only', before, after], directory)
+    : { stdout: '', stderr: '', exitCode: 0 };
+  const files = changedFiles.exitCode === 0
+    ? changedFiles.stdout.split('\n').map((line) => line.trim()).filter(Boolean)
+    : [];
+   
   return {
     success: result.exitCode === 0,
-    summary: { changes: 0, insertions: 0, deletions: 0 },
-    files: [],
+    summary: { changes: files.length, insertions: 0, deletions: 0 },
+    files,
     insertions: 0,
     deletions: 0,
   };