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src/layout/AppMenuFooterPanel.vue

@@ -46,11 +46,24 @@ function isDarkNow() {
     return document.documentElement.classList.contains('app-dark');
 }
 
+async function waitForDarkFlip(before, timeoutMs = 900) {
+    const start = performance.now();
+    while (performance.now() - start < timeoutMs) {
+        await nextTick();
+        await new Promise((r) => requestAnimationFrame(r));
+        const now = isDarkNow();
+        if (now !== before) return now;
+    }
+    return isDarkNow();
+}
+
 async function toggleDarkAndPersist() {
     try {
+        const before = isDarkNow();
         toggleDarkMode();
-        await nextTick();
-        const theme_mode = isDarkNow() ? 'dark' : 'light';
+        const after = await waitForDarkFlip(before);
+        const theme_mode = after ? 'dark' : 'light';
+        try { localStorage.setItem('ui_theme_mode', theme_mode); } catch {}
         await queuePatch({ theme_mode }, { flushNow: true });
     } catch (e) {
         console.error('[FooterPanel][theme] falhou:', e?.message || e);