fix: Remove workspace config, fix test suite, update snapshots

- Remove root /home/mamostehp/package.json workspace config
- Each project now independent (aligned with CI workflow)
- Add SafeAreaProvider mock to jest setup
- Add __DEV__ global for React Native tests
- Update 4 snapshots for SafeAreaView changes
- All 29 test suites pass (122 tests)

mobile/jest.setup.before.cjs

@@ -1,6 +1,9 @@
 // Setup file that runs BEFORE setupFilesAfterEnv
 // This is needed to mock Expo's winter runtime before it loads
 
+// Define __DEV__ global for React Native
+global.__DEV__ = true;
+
 // Mock the __ExpoImportMetaRegistry getter to prevent winter errors
 Object.defineProperty(global, '__ExpoImportMetaRegistry__', {
   get() {