fix: keep native helper bundle generated-only

.gitignore

@@ -167,7 +167,7 @@ test-out-2/mic.wav
 test-out-2/recording.wav
 test-out-2/system.wav
 build_assets/native-capture-helper
-build_assets/ClosedRoomNativeCapture.app/Contents/MacOS/ClosedRoomNativeCapture
+build_assets/ClosedRoomNativeCapture.app/
 update-uv-dependences-llm-local-server
 docs/assets/Screenshot 2026-06-26 alle 16.23.57.heic
 docs/assets/Screenshot 2026-06-26 alle 16.24.33.heic

test/test_build_generated_assets_contract.py

@@ -0,0 +1,57 @@
+from __future__ import annotations
+
+import subprocess
+from pathlib import Path
+import unittest
+
+
+ROOT = Path(__file__).parents[1]
+HELPER_APP = "build_assets/ClosedRoomNativeCapture.app"
+
+
+class GeneratedBuildAssetsContractTests(unittest.TestCase):
+    def test_native_helper_app_is_generated_and_ignored(self) -> None:
+        tracked = subprocess.run(
+            ["git", "ls-files", "--error-unmatch", f"{HELPER_APP}/Contents/Info.plist"],
+            cwd=ROOT,
+            capture_output=True,
+            text=True,
+            check=False,
+        )
+        ignored = subprocess.run(
+            ["git", "check-ignore", "-q", f"{HELPER_APP}/Contents/Info.plist"],
+            cwd=ROOT,
+            check=False,
+        )
+
+        self.assertNotEqual(
+            tracked.returncode,
+            0,
+            "generated native helper Info.plist must not be tracked",
+        )
+        self.assertEqual(
+            ignored.returncode,
+            0,
+            "generated native helper app must remain ignored",
+        )
+
+    def test_build_regenerates_and_embeds_native_helper_app(self) -> None:
+        build_script = (ROOT / "build.sh").read_text(encoding="utf-8")
+
+        self.assertIn(
+            'NATIVE_HELPER_APP="$BUILD_ASSETS/ClosedRoomNativeCapture.app"',
+            build_script,
+        )
+        self.assertIn('rm -rf "$NATIVE_HELPER_APP"', build_script)
+        self.assertIn(
+            'cat > "$NATIVE_HELPER_APP/Contents/Info.plist" <<PLIST',
+            build_script,
+        )
+        self.assertIn(
+            'ditto "$NATIVE_HELPER_APP" "$NATIVE_HELPER_APP_IN_APP"',
+            build_script,
+        )
+
+
+if __name__ == "__main__":
+    unittest.main()