Fix backend test mocks for subprocess timeout kwarg

backend/tests/test_server.py

@@ -21,7 +21,7 @@ def test_validate_output_format_rejects_unknown() -> None:
 
 
 def test_transcriptions_returns_generated_artifact(monkeypatch, tmp_path: Path) -> None:
-    def fake_run(command: list[str], check: bool, capture_output: bool, text: bool):
+    def fake_run(command: list[str], check: bool, capture_output: bool, text: bool, timeout: int):
         output_dir = Path(command[command.index("--output_dir") + 1])
         (output_dir / "clip.txt").write_text("hello world", encoding="utf-8")
 
@@ -46,7 +46,7 @@ def test_transcriptions_returns_generated_artifact(monkeypatch, tmp_path: Path)
 
 
 def test_transcriptions_maps_subprocess_failure(monkeypatch) -> None:
-    def fake_run(command: list[str], check: bool, capture_output: bool, text: bool):
+    def fake_run(command: list[str], check: bool, capture_output: bool, text: bool, timeout: int):
         class Result:
             returncode = 1
             stdout = ""