fix: improve cross-device evidence, request diagnostics and prompt efficiency

tests/unit/test_plugin_evidence.py

@@ -324,8 +324,8 @@ async def test_v2_observation_without_task_context_never_starts_recording(monkey
     [
         ("computer", False, True),
         ("computer", True, False),
-        ("android", False, False),
-        ("mixed", False, False),
+        ("android", False, True),
+        ("mixed", False, True),
     ],
 )
 async def test_pro_cross_window_evidence_does_not_reuse_another_source_before_image(