fix(ui): hold the changed-files gate until post-bootstrap status lands

Refresh hints fired while setup commands run can cache a mid-creation
dirty snapshot; lifting the gate the moment bootstrap settles flashed
that stale snapshot until the forced fetch resolved. The gate now stays
down until the post-bootstrap status fetch completes.

packages/ui/src/components/chat/work-status/WorkStatusPrimaryGroup.tsx

@@ -70,32 +70,38 @@ export const WorkStatusPrimaryGroup: React.FC<Props> = ({ sessionId, directory,
 
   // A worktree that is still being created transiently looks dirty until its
   // setup commands and initial git reset finish. Those files are not changes
-  // on the branch, so status is neither fetched nor displayed until the
-  // bootstrap settles.
+  // on the branch, so the changed-files readout stays hidden while the
+  // bootstrap runs — and stays hidden until one fresh status fetch completes
+  // afterwards, because the shared cache may still hold a snapshot captured
+  // mid-creation (refresh hints fire while setup commands touch files) and
+  // lifting the gate onto it would flash the transient state.
   const worktreeCreationPending = useWorktreeBootstrapPending(gitDirectory);
-  const awaitingPostBootstrapStatusRef = React.useRef<string | null>(null);
+  const [postBootstrapRefreshDirectory, setPostBootstrapRefreshDirectory] = React.useState<string | null>(null);
+  const awaitingPostBootstrapStatus = postBootstrapRefreshDirectory !== null
+    && postBootstrapRefreshDirectory === gitDirectory;
 
   // Warm the shared git cache through the background-network gate so the panel
   // never competes with the chat's own bootstrap traffic for sockets.
   React.useEffect(() => {
     if (!showRepository || !gitDirectory || !git) return;
     if (worktreeCreationPending) {
-      awaitingPostBootstrapStatusRef.current = gitDirectory;
+      setPostBootstrapRefreshDirectory(gitDirectory);
       return;
     }
-    // Right after bootstrap the cache may still hold a status captured
-    // mid-creation; force one fetch so the lifted gate reveals the real
-    // (reset) working tree instead of the transient one.
-    const finishedBootstrap = awaitingPostBootstrapStatusRef.current === gitDirectory;
-    awaitingPostBootstrapStatusRef.current = null;
-    void runBackgroundNetworkTask(async () => {
-      if (finishedBootstrap) {
-        await fetchStatus(gitDirectory, git, { silent: true });
-      } else {
-        await ensureStatus(gitDirectory, git);
-      }
-    });
-  }, [gitDirectory, git, ensureStatus, fetchStatus, showRepository, worktreeCreationPending]);
+    if (awaitingPostBootstrapStatus) {
+      let cancelled = false;
+      void runBackgroundNetworkTask(() => fetchStatus(gitDirectory, git, { silent: true }))
+        .finally(() => {
+          if (!cancelled) {
+            setPostBootstrapRefreshDirectory((current) => (current === gitDirectory ? null : current));
+          }
+        });
+      return () => {
+        cancelled = true;
+      };
+    }
+    void runBackgroundNetworkTask(() => ensureStatus(gitDirectory, git));
+  }, [gitDirectory, git, ensureStatus, fetchStatus, showRepository, worktreeCreationPending, awaitingPostBootstrapStatus]);
 
   // Own the live invalidation for the repository readout. The desktop
   // composer's changed-files row no longer renders, so this panel must not
@@ -198,7 +204,7 @@ export const WorkStatusPrimaryGroup: React.FC<Props> = ({ sessionId, directory,
   // event is reset to an empty array too, and carries real content only on
   // revert. Git status is the one authoritative, already-cached answer.
   const changed = React.useMemo(() => {
-    if (worktreeCreationPending) return null;
+    if (worktreeCreationPending || awaitingPostBootstrapStatus) return null;
     const files = gitStatus?.files ?? [];
     if (files.length === 0) return null;
     const stats = gitStatus?.diffStats;
@@ -211,7 +217,7 @@ export const WorkStatusPrimaryGroup: React.FC<Props> = ({ sessionId, directory,
       }
     }
     return { files: files.length, additions, deletions, hasStats: Boolean(stats) };
-  }, [gitStatus?.files, gitStatus?.diffStats, worktreeCreationPending]);
+  }, [gitStatus?.files, gitStatus?.diffStats, worktreeCreationPending, awaitingPostBootstrapStatus]);
 
   const attentionReason = gitStatus?.attentionReason
     ?? (gitStatus?.rebaseInProgress ? 'rebase' : null)