fix(tabs): show the in-flight name when an unchanged rename is confirmed

src/web/public/session-ui.js

@@ -2936,6 +2936,7 @@ Object.assign(CodemanApp.prototype, {
     // A rename still in flight is the user's last word, not the name the
     // server has yet to replace: start from it, and compare against it below.
     const shownName = this._inlineRenamePending?.get(sessionId) ?? session.name;
+    const renameInFlight = shownName !== session.name;
     const parsed = parseSessionPrefix(shownName);
     const originalContent = tabName.textContent;
     const originalChildren = [...tabName.childNodes].map((node) => node.cloneNode(true));
@@ -3017,7 +3018,10 @@ Object.assign(CodemanApp.prototype, {
 
       const suffix = input.value.trim();
       const fullName = parsed ? parsed.prefix + (suffix ? ': ' + suffix : '') : suffix;
-      if (fullName === shownName) restoreOriginalChildren();
+      // An unchanged confirm puts the old label back, unless the editor opened
+      // over a rename in flight: that label was repainted from the server's
+      // older name, so show the in-flight name rather than make it look lost.
+      if (fullName === shownName && !renameInFlight) restoreOriginalChildren();
       else tabName.textContent = fullName || originalContent;
 
       // Skip the API call if the session vanished between focus and blur. The

test/inline-rename.test.ts

@@ -828,6 +828,26 @@ describe('Inline rename write ordering', () => {
     ).toBe(false);
   });
 
+  it('shows the in-flight name when a reopened editor is confirmed unchanged, before the PUT lands', async () => {
+    await mount('shown', 'Old');
+    await commit('shown', 'First');
+    // Reopen while the PUT for "First" is held, then confirm it untouched. The
+    // label must read "First" now, not the "Old" the cancelled editor
+    // repainted from app.sessions.
+    await page.evaluate(() =>
+      (window as unknown as { app: { startInlineRename: (id: string) => void } }).app.startInlineRename('shown')
+    );
+    await commit('shown', null);
+    const label = await page.evaluate(
+      () => (document.querySelector('.tab-name[data-session-id="shown"]') as HTMLElement).textContent
+    );
+    expect((await state('shown')).bodies).toEqual(['First']);
+    expect(label).toBe('First');
+    await answer(0, 'First');
+    await restoreFetch();
+    expect(await state('shown')).toEqual({ bodies: ['First'], mapName: 'First', renameActive: false });
+  });
+
   it('reports a failed write even after its editor is gone', async () => {
     await mount('fail-late', 'Old');
     await page.evaluate(() => {