feat(renderer): GitStatusPanel sidebar tab + git.refresh event

src/renderer/components/sidebar/Sidebar.tsx

@@ -5,6 +5,7 @@ import { ScrollArea } from '@/components/ui/scroll-area';
 import { useFileStore } from '@/stores/file-store';
 import { FileTree } from './FileTree';
 import { Outline } from './Outline';
+import { GitStatusPanel } from './GitStatusPanel';
 
 export function Sidebar() {
   const tree = useFileStore((s) => s.tree);
@@ -49,6 +50,21 @@ export function Sidebar() {
           </ScrollArea>
         </CollapsibleContent>
       </Collapsible>
+
+      {/* Git section */}
+      <Collapsible defaultOpen>
+        <CollapsibleTrigger asChild>
+          <button className="flex w-full items-center gap-1.5 px-1 py-1.5 text-xs font-medium hover:bg-accent rounded">
+            <ChevronRight size={12} className="rotate-90" />
+            Git
+          </button>
+        </CollapsibleTrigger>
+        <CollapsibleContent>
+          <ScrollArea className="h-[calc(100vh-240px)]">
+            <GitStatusPanel />
+          </ScrollArea>
+        </CollapsibleContent>
+      </Collapsible>
     </div>
   );
 }