Add protocol performance profiles

tests/test_meeting_service.py

@@ -561,3 +561,50 @@ def test_uploaded_source_is_preserved_in_meeting_directory(tmp_path: Path) -> No
     assert destination.parent == tmp_path / "meetings" / "meeting-1" / "uploads"
     assert destination.name.endswith("_unsafe.wav")
     assert destination.read_bytes() == b"source audio"
+
+
+@pytest.mark.parametrize(
+    ("profile", "threads"),
+    [("fast", 16), ("efficient", 10), ("powersave", 4)],
+)
+def test_process_resolves_profile_for_protocol_generation(
+    tmp_path: Path, profile: str, threads: int
+) -> None:
+    service, gateway = make_service(tmp_path)
+    audio = tmp_path / "meeting.wav"
+    audio.write_bytes(b"audio")
+
+    service.process(
+        audio,
+        meeting(),
+        participants(),
+        ProcessingOptions(performance_profile=profile),
+    )
+
+    assert gateway.config_values is not None
+    assert gateway.config_values["protocol_num_thread"] == threads
+
+
+def test_process_defaults_to_backend_thread_selection(tmp_path: Path) -> None:
+    service, gateway = make_service(tmp_path)
+    audio = tmp_path / "meeting.wav"
+    audio.write_bytes(b"audio")
+
+    service.process(audio, meeting(), participants(), ProcessingOptions())
+
+    assert gateway.config_values is not None
+    assert gateway.config_values["protocol_num_thread"] is None
+
+
+def test_protocol_regeneration_propagates_explicit_profile(tmp_path: Path) -> None:
+    service, gateway = make_service(tmp_path)
+    write_speaker_review_artifacts(gateway.run_dir)
+
+    service.regenerate_protocol(
+        gateway.run_dir,
+        {},
+        performance_profile="fast",
+    )
+
+    assert gateway.regeneration is not None
+    assert gateway.regeneration["options"]["protocol_num_thread"] == 16