fix: stabilize native window layout transitions

Checks/app-startup.py

@@ -36,6 +36,22 @@ class StartupStreamingServer(StreamingServer):
         super()._get(request)
 
 
+def check_window_layout(root, app, fixtures):
+    result_path = root / "window-layout.json"
+    diagnostics = root / "window-layout.log"
+    result = subprocess.run(
+        ["open", "-g", "-n", "-W", "--stderr", str(diagnostics), "-a", str(app),
+         str(fixtures / "cache.mp4"), "--args", "--no-config", "--check-window-layout", str(result_path)],
+        capture_output=True, text=True, timeout=40,
+    )
+    log = diagnostics.read_text(errors="replace") if diagnostics.exists() else ""
+    report = json.loads(result_path.read_text()) if result_path.exists() else {}
+    if result.returncode != 0 or not report.get("passed") or report.get("steps") != 32:
+        raise RuntimeError(f"native window layout failed: {report}; {result.stdout}{result.stderr}{log}")
+    print("PASS native SwiftUI window layout: repeated compact/normal transitions with queue open/closed, "
+          "rapid intent changes, original window and exact normal geometry restored")
+
+
 def check_cli_instances(root, app, fixtures):
     cli = root / "terebi"
     cli.symlink_to(app / "Contents/MacOS/terebi-cli")
@@ -635,7 +651,9 @@ with tempfile.TemporaryDirectory(prefix="terebi-startup-") as directory:
         if launch.returncode != 0 or not result["passed"] or result["bundleIdentifier"] != identifier:
             raise RuntimeError(f"packaged startup failed: {result}; {stdout}{stderr}")
         print("PASS packaged bootstrap: registered app PID/identity, in-process player load, actual playback and Now Playing")
-        check_cli_instances(root, app, fixtures)
+        check_window_layout(root, app, fixtures)
+        if os.environ.get("TEREBI_CHECK_LAYOUT_ONLY") != "1":
+            check_cli_instances(root, app, fixtures)
     finally:
         os.close(descriptor)
         subprocess.run(