fix: rename git branch during workspace rename, handle creating status

Two fixes:

1. WorktreeRuntime.renameWorkspace now renames the git branch via
   `git branch -m` after moving the worktree directory. Previously
   only the directory was moved, leaving the branch with the old name.

2. ReviewPanel shows a loading state when workspace status is 'creating'.
   This prevents errors when the panel tries to run git commands on a
   workspace that doesn't exist on disk yet.

Props added: AIView.status, RightSidebar.isCreating, ReviewPanel.isCreating

Author: ibetitsmike

src/browser/App.tsx

@@ -589,6 +589,7 @@ function AppInner() {
                       namedWorkspacePath={selectedWorkspace.namedWorkspacePath ?? ""}
                       runtimeConfig={currentMetadata?.runtimeConfig}
                       incompatibleRuntime={currentMetadata?.incompatibleRuntime}
+                      status={currentMetadata?.status}
                     />
                   </ErrorBoundary>
                 );

src/browser/components/AIView.tsx

@@ -55,6 +55,8 @@ interface AIViewProps {
   className?: string;
   /** If set, workspace is incompatible (from newer mux version) and this error should be displayed */
   incompatibleRuntime?: string;
+  /** If 'creating', workspace is still being set up (git operations in progress) */
+  status?: "creating";
 }
 
 const AIViewInner: React.FC<AIViewProps> = ({
@@ -65,6 +67,7 @@ const AIViewInner: React.FC<AIViewProps> = ({
   namedWorkspacePath,
   runtimeConfig,
   className,
+  status,
 }) => {
   const { api } = useAPI();
   const chatAreaRef = useRef<HTMLDivElement>(null);
@@ -637,6 +640,7 @@ const AIViewInner: React.FC<AIViewProps> = ({
         onStartResize={isReviewTabActive ? startResize : undefined} // Pass resize handler when Review active
         isResizing={isResizing} // Pass resizing state
         onReviewNote={handleReviewNote} // Pass review note handler to append to chat
+        isCreating={status === "creating"} // Workspace still being set up
       />
     </div>
   );

src/browser/components/RightSidebar.tsx

@@ -84,6 +84,8 @@ interface RightSidebarProps {
   isResizing?: boolean;
   /** Callback when user adds a review note from Code Review tab */
   onReviewNote?: (note: string) => void;
+  /** Workspace is still being created (git operations in progress) */
+  isCreating?: boolean;
 }
 
 const RightSidebarComponent: React.FC<RightSidebarProps> = ({
@@ -95,6 +97,7 @@ const RightSidebarComponent: React.FC<RightSidebarProps> = ({
   onStartResize,
   isResizing = false,
   onReviewNote,
+  isCreating = false,
 }) => {
   // Global tab preference (not per-workspace)
   const [selectedTab, setSelectedTab] = usePersistedState<TabType>("right-sidebar-tab", "costs");
@@ -298,6 +301,7 @@ const RightSidebarComponent: React.FC<RightSidebarProps> = ({
                   workspacePath={workspacePath}
                   onReviewNote={onReviewNote}
                   focusTrigger={focusTrigger}
+                  isCreating={isCreating}
                 />
               </div>
             )}

src/browser/components/RightSidebar/CodeReview/ReviewPanel.tsx

@@ -45,6 +45,8 @@ interface ReviewPanelProps {
   onReviewNote?: (note: string) => void;
   /** Trigger to focus panel (increment to trigger) */
   focusTrigger?: number;
+  /** Workspace is still being created (git operations in progress) */
+  isCreating?: boolean;
 }
 
 interface ReviewSearchState {
@@ -120,6 +122,7 @@ export const ReviewPanel: React.FC<ReviewPanelProps> = ({
   workspacePath,
   onReviewNote,
   focusTrigger,
+  isCreating = false,
 }) => {
   const { api } = useAPI();
   const panelRef = useRef<HTMLDivElement>(null);
@@ -618,6 +621,17 @@ export const ReviewPanel: React.FC<ReviewPanelProps> = ({
     return () => window.removeEventListener("keydown", handleKeyDown);
   }, []);
 
+  // Show loading state while workspace is being created
+  if (isCreating) {
+    return (
+      <div className="flex h-full flex-col items-center justify-center p-8 text-center">
+        <div className="mb-4 text-2xl">⏳</div>
+        <p className="text-secondary text-sm">Setting up workspace...</p>
+        <p className="text-secondary mt-1 text-xs">Review will be available once ready</p>
+      </div>
+    );
+  }
+
   return (
     <div
       ref={panelRef}

src/node/runtime/WorktreeRuntime.ts

@@ -177,14 +177,18 @@ export class WorktreeRuntime extends LocalBaseRuntime {
     const newPath = this.getWorkspacePath(projectPath, newName);
 
     try {
-      // Use git worktree move to rename the worktree directory
-      // This updates git's internal worktree metadata correctly
-      using proc = execAsync(`git -C "${projectPath}" worktree move "${oldPath}" "${newPath}"`);
-      await proc.result;
+      // Move the worktree directory (updates git's internal worktree metadata)
+      using moveProc = execAsync(`git -C "${projectPath}" worktree move "${oldPath}" "${newPath}"`);
+      await moveProc.result;
+
+      // Rename the git branch to match the new workspace name
+      // Run from the new worktree path since that's where the branch is checked out
+      using branchProc = execAsync(`git -C "${newPath}" branch -m "${oldName}" "${newName}"`);
+      await branchProc.result;
 
       return { success: true, oldPath, newPath };
     } catch (error) {
-      return { success: false, error: `Failed to move worktree: ${getErrorMessage(error)}` };
+      return { success: false, error: `Failed to rename workspace: ${getErrorMessage(error)}` };
     }
   }