chore: apply oxlint fix-suggestions (unused imports + useless fragments)

Scoped to only `no-unused-vars` and `react/jsx-no-useless-fragment` —
the safe subset of --fix-suggestions. Primary changes:

- Remove unused named imports from statements
- Remove unused default/type imports entirely
- Collapse `<><Single/></>` fragments to `<Single/>`

Verified clean: typecheck + format + lint all green.

packages/app/src/screens/workspace/workspace-screen.tsx

@@ -21,7 +21,6 @@ import {
   X,
 } from "lucide-react-native";
 import { GestureDetector } from "react-native-gesture-handler";
-import Animated from "react-native-reanimated";
 import { useSafeAreaInsets } from "react-native-safe-area-context";
 import { StyleSheet, useUnistyles } from "react-native-unistyles";
 import invariant from "tiny-invariant";