Complete training workflow and acceptance hardening

backend/tests/test_sip_recording_cleanup.py

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+import subprocess
+import sys
+from pathlib import Path
+
+SCRIPTS = Path(__file__).resolve().parents[2] / "scripts"
+sys.path.insert(0, str(SCRIPTS))
+
+from sip_recording_cleanup import remove_smoke_recordings  # noqa: E402
+
+
+def test_cleanup_removes_only_new_wav_basenames_from_compose_volume(tmp_path):
+    calls = []
+
+    def run(command, **kwargs):
+        calls.append((command, kwargs))
+        return subprocess.CompletedProcess(command, 0, stdout="")
+
+    assert remove_smoke_recordings(
+        tmp_path,
+        {"20260926-120000-6101-6102-abc.wav", "../keep.wav", "old.txt"},
+        runner=run,
+    )
+
+    command, options = calls[0]
+    assert command[-4:] == [
+        "rm", "-f", "--", "/recordings/20260926-120000-6101-6102-abc.wav",
+    ]
+    assert "../keep.wav" not in command
+    assert "old.txt" not in command
+    assert options["cwd"] == tmp_path
+    assert len(calls) == 2
+    assert calls[1][0][-8:] == [
+        "find", "/recordings", "-maxdepth", "1", "-type", "f", "-name", "*.wav",
+    ]
+
+
+def test_cleanup_does_not_run_compose_for_empty_or_unsafe_names(tmp_path):
+    def unexpected_run(*_args, **_kwargs):
+        raise AssertionError("no deletion command should be needed")
+
+    assert remove_smoke_recordings(tmp_path, {"../outside.wav", "not-a-recording.txt"}, runner=unexpected_run)
+
+
+def test_cleanup_reports_compose_failure(tmp_path):
+    def fail(command, **_kwargs):
+        return subprocess.CompletedProcess(command, 1)
+
+    assert not remove_smoke_recordings(tmp_path, {"new.wav"}, runner=fail)
+
+
+def test_cleanup_fails_if_exact_smoke_file_still_exists(tmp_path):
+    calls = []
+
+    def run(command, **_kwargs):
+        calls.append(command)
+        output = "/recordings/new.wav\n" if len(calls) == 2 else ""
+        return subprocess.CompletedProcess(command, 0, stdout=output)
+
+    assert not remove_smoke_recordings(tmp_path, {"new.wav"}, runner=run)