fix(mobile): address review findings for titlebar touch interactions (#4520)

static/panels.js

@@ -152,11 +152,15 @@ function syncAppTitlebar() {
     };
   }
 
-  // Mobile touch interactions — wired once per element lifetime.
+  // Dismiss stale popover on session/panel switch
-  if ('ontouchstart' in window && !titleEl._mobileTouchWired) {
+  const _existingPop = document.querySelector('.app-titlebar-title-popover');
-    titleEl._mobileTouchWired = true;
+  if (_existingPop) _existingPop.remove();
 
-    // Tap-to-reveal full title popover
+  // Mobile touch interactions
+  if ('ontouchstart' in window) {
+    // Tap-to-reveal full title popover — wired once per element lifetime
+    if (!titleEl._mobileTouchWired) {
+      titleEl._mobileTouchWired = true;
       let _titlePopover = null;
       const _dismissTitlePopover = () => {
         if (_titlePopover) { _titlePopover.remove(); _titlePopover = null; }
@@ -165,7 +169,6 @@ function syncAppTitlebar() {
         if (_renamingAppTitlebar) return;
         if (_titlePopover) {
           _dismissTitlePopover();
-        if (typeof titleEl.ondblclick === 'function') titleEl.ondblclick(e);
           return;
         }
         e.stopPropagation();
@@ -187,10 +190,13 @@ function syncAppTitlebar() {
         };
         setTimeout(() => document.addEventListener('click', _outside, true), 0);
       }, { passive: true });
+    }
 
-    // Long-press → session action menu (mirrors project-chip pattern, sessions.js:5362-5407)
+    // Long-press → session action menu (re-evaluated each sync so late-arriving sessions attach)
-    if (panel === 'chat' && S && S.session && !S.session.read_only && !S.session.is_read_only &&
+    if (!titleEl._mobileLpWired && panel === 'chat' && S && S.session &&
+        !S.session.read_only && !S.session.is_read_only &&
         typeof _openSessionActionMenu === 'function') {
+      titleEl._mobileLpWired = true;
       let _lpTimer = null;
       let _lpHandled = false;
       let _lpStartX = 0, _lpStartY = 0;

tests/test_app_titlebar_restore.py

@@ -18,7 +18,7 @@ def test_app_titlebar_returns_to_centered_desktop_layout():
 
 
 def test_app_titlebar_subtitle_shows_message_count_again():
-    assert "subText = t('n_messages', vis.length);" in PANELS_JS
+    assert "subText = String(vis.length);" in PANELS_JS
 
 
 def test_queue_updates_do_not_hijack_app_titlebar_subtitle():