feat(ui): add favorite-model cycling shortcuts (#592)

* feat(ui): add Alt+F / Alt+Shift+F keyboard shortcuts to cycle favorite models

Allows cycling forward/backward through starred models without opening
the model picker. Mirrors the cycle_thinking_variant pattern. Silent
no-op when no models are favorited.

* fix(ui): remap favorite model cycling to ctrl brackets

* chore(ui): update favorite-cycle shortcut comment

packages/ui/src/hooks/useKeyboardShortcuts.ts

@@ -290,6 +290,49 @@ export const useKeyboardShortcuts = () => {
         return;
       }
 
+      // Ctrl+] / Ctrl+[: Cycle through starred models (same gating as Shift+M)
+      if (
+        eventMatchesShortcut(e, combo('cycle_favorite_model_forward')) ||
+        eventMatchesShortcut(e, combo('cycle_favorite_model_backward'))
+      ) {
+        const {
+          isSettingsDialogOpen,
+          isCommandPaletteOpen,
+          isHelpDialogOpen,
+          isSessionSwitcherOpen,
+          isAboutDialogOpen,
+          activeMainTab,
+          favoriteModels,
+          addRecentModel,
+        } = useUIStore.getState();
+
+        if (isSettingsDialogOpen) {
+          return;
+        }
+
+        const hasOverlay = isCommandPaletteOpen || isHelpDialogOpen || isSessionSwitcherOpen || isAboutDialogOpen;
+        const isChatActive = activeMainTab === 'chat';
+
+        if (hasOverlay || !isChatActive || favoriteModels.length === 0) {
+          return;
+        }
+
+        e.preventDefault();
+
+        const { currentProviderId, currentModelId, setProvider, setModel } = useConfigStore.getState();
+        const len = favoriteModels.length;
+        const currentIdx = favoriteModels.findIndex(
+          (f) => f.providerID === currentProviderId && f.modelID === currentModelId,
+        );
+        const delta = eventMatchesShortcut(e, combo('cycle_favorite_model_forward')) ? 1 : -1;
+        const next = favoriteModels[(currentIdx + delta + len) % len];
+
+        setProvider(next.providerID);
+        setModel(next.modelID);
+        addRecentModel(next.providerID, next.modelID);
+        return;
+      }
+
       if (eventMatchesShortcut(e, combo('expand_input'))) {
         if (isMobile) {
           return;

packages/ui/src/lib/shortcuts.ts

@@ -291,6 +291,20 @@ const SHORTCUT_ACTIONS: ReadonlyArray<ShortcutAction> = [
     label: 'Cycle thinking variant',
     description: 'Cycle thinking variant while in chat',
   },
+  {
+    id: 'cycle_favorite_model_forward',
+    defaultCombo: 'ctrl+]',
+    label: 'Cycle favorite model forward',
+    description: 'Cycle forward through starred models without opening the picker',
+    customizable: true,
+  },
+  {
+    id: 'cycle_favorite_model_backward',
+    defaultCombo: 'ctrl+[',
+    label: 'Cycle favorite model backward',
+    description: 'Cycle backward through starred models without opening the picker',
+    customizable: true,
+  },
   {
     id: 'expand_input',
     defaultCombo: 'mod+shift+e',