Add vitest.setup.ts to define __DEV__, shim Expo globals, mock
react-native-unistyles/expo-linking, and stub @xterm/addon-ligatures.
Update stale test expectations across combined-model-selector,
use-settings, tool-call-display, sidebar-project-row-model,
sidebar-shortcuts, keyboard-shortcuts, host-runtime,
use-agent-form-state, desktop-permissions, and voice-runtime
to match current source behavior.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
