test: patrol flows for fetch cancel, rotation and unchanged-key refresh

pubspec.yaml

@@ -41,6 +41,9 @@ patrol:
   app_name: kirakira
   flavor: integration
   test_directory: integration_test
+  # A failing device test leaves the phone in an unknown state; the screenshot
+  # is the only way to see it from the host.
+  screenshot_on_failure: true
   android:
     package_name: com.app.smol_mail.integration