Initial commit for Greenlens

services/authService.ts

@@ -118,4 +118,20 @@ export const AuthService = {
       return 'unreachable';
     }
   },
+
+  async checkIfFirstRun(): Promise<boolean> {
+    const flag = await SecureStore.getItemAsync('greenlens_first_run_complete');
+    return flag !== 'true';
+  },
+
+  async markFirstRunComplete(): Promise<void> {
+    await SecureStore.setItemAsync('greenlens_first_run_complete', 'true');
+  },
+
+  async clearAllData(): Promise<void> {
+    await clearStoredSession();
+    await SecureStore.deleteItemAsync('greenlens_first_run_complete');
+    // Note: SQLite tables aren't cleared here to avoid destroying user data 
+    // without explicit consent, but session tokens are wiped.
+  },
 };