fix(mobile): add NetInfo mock + fix ErrorBoundary test logic bugs

- Add __mocks__/@react-native-community/netinfo.js and moduleNameMapper
  to fix 3 test suites crashing on missing native module
- ErrorBoundary: use getAllByText when error.stack duplicates message
- ErrorBoundary: move stop-booming button outside boundary so it stays
  mounted when Bomb throws

All 19 suites pass (176/176 tests) with 0 tsc errors.

Author: scarface-dev1

mobile/__mocks__/@react-native-community/netinfo.js

@@ -0,0 +1,22 @@
+const NetInfo = {
+  fetch: jest.fn(() =>
+    Promise.resolve({
+      isConnected: true,
+      isInternetReachable: true,
+      type: "wifi",
+      details: { isConnectionExpensive: false },
+    }),
+  ),
+  addEventListener: jest.fn(() => ({
+    remove: jest.fn(),
+  })),
+  useNetInfo: jest.fn(() => ({
+    isConnected: true,
+    isInternetReachable: true,
+    type: "wifi",
+    details: null,
+  })),
+  configure: jest.fn(),
+};
+
+module.exports = NetInfo;

mobile/components/__tests__/ErrorBoundary.test.tsx

@@ -78,7 +78,8 @@ describe("ErrorBoundary", () => {
     const alert = screen.getByRole("alert");
     expect(alert).toBeTruthy();
     expect(alert.props.accessibilityLiveRegion).toBe("assertive");
-    expect(screen.getByText(/intentional render error/i)).toBeTruthy();
+    const matches = screen.getAllByText(/intentional render error/i);
+    expect(matches.length).toBeGreaterThan(0);
     expect(screen.getByRole("button", { name: /retry/i })).toBeTruthy();
 
     spy.mockRestore();
@@ -149,12 +150,14 @@ describe("ErrorBoundary", () => {
     function ToggleHarness() {
       const [boom, setBoom] = React.useState(true);
       return (
-        <ErrorBoundary>
+        <>
           <Pressable testID="stop-booming" onPress={() => setBoom(false)}>
             <Text>stop</Text>
           </Pressable>
-          <Bomb shouldThrow={boom} />
-        </ErrorBoundary>
+          <ErrorBoundary>
+            <Bomb shouldThrow={boom} />
+          </ErrorBoundary>
+        </>
       );
     }
     render(<ToggleHarness />);

mobile/package.json

@@ -63,6 +63,7 @@
       "^expo-local-authentication$": "<rootDir>/__mocks__/expo-local-authentication.js",
       "^expo-secure-store$": "<rootDir>/__mocks__/expo-secure-store.js",
       "^expo-notifications$": "<rootDir>/__mocks__/expo-notifications.js",
+      "^@react-native-community/netinfo$": "<rootDir>/__mocks__/@react-native-community/netinfo.js",
       "^react-native/Libraries/BatchedBridge/NativeModules$": "<rootDir>/__mocks__/NativeModules.js"
     }
   }