misc: upgrade to Expo SDK 58

Move the app from SDK 55 onto React Native 0.88 so later widget and auth work can use the SDK 58 packages.

Co-authored-by: Cursor <cursoragent@cursor.com>

hooks/use-theme-color.ts

@@ -1,21 +0,0 @@
-/**
- * Learn more about light and dark modes:
- * https://docs.expo.dev/guides/color-schemes/
- */
-
-import { Colors } from '@/constants/theme';
-import { useColorScheme } from '@/hooks/use-color-scheme';
-
-export function useThemeColor(
-  props: { light?: string; dark?: string },
-  colorName: keyof typeof Colors.light & keyof typeof Colors.dark
-) {
-  const theme = useColorScheme() ?? 'light';
-  const colorFromProps = props[theme];
-
-  if (colorFromProps) {
-    return colorFromProps;
-  } else {
-    return Colors[theme][colorName];
-  }
-}