fix(ui): Add phaseModels to localStorage persistence

phaseModels was missing from the partialize() function, causing
it to reset to defaults on app restart. Now properly persisted
alongside other settings like enhancementModel and validationModel.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/ui/src/store/app-store.ts

@@ -2780,6 +2780,7 @@ export const useAppStore = create<AppState & AppActions>()(
           muteDoneSound: state.muteDoneSound,
           enhancementModel: state.enhancementModel,
           validationModel: state.validationModel,
+          phaseModels: state.phaseModels,
           enabledCursorModels: state.enabledCursorModels,
           cursorDefaultModel: state.cursorDefaultModel,
           autoLoadClaudeMd: state.autoLoadClaudeMd,