fixed omnibus for audio books

tests/test_audible_convert.py

@@ -190,6 +190,14 @@ def test_write_agent_log_serializes_metadata_as_json_object(tmp_path) -> None:
     assert record["path"] == str(tmp_path)
 
 
+def test_system_prompt_instructs_agent_to_detect_omnibuses() -> None:
+    prompt = metadata_agent.system_prompt()
+
+    assert "Detect omnibus or box-set editions" in prompt
+    assert "books-1-3" in prompt
+    assert "Keep series_index as the" in prompt
+
+
 def test_standard_book_metadata_accepts_valid_tool_output(tmp_path, monkeypatch, audiobook_engine) -> None:
     install_fake_ollama(
         monkeypatch,
@@ -928,7 +936,16 @@ def test_main_dry_run_prints_outputs_without_converting(tmp_path, monkeypatch, c
 
     assert calls == []
     assert capsys.readouterr().out == (
-        f"{source} -> "
+        f"{source} -> {output_directory / 'charles_lamb-alice_01-alice' / 'charles_lamb-alice_01-alice.m4b'}\n"
+    )
+    dry_run_file = (
+        output_directory
+        / ".audible_convert"
+        / "dry-run"
+        / "charles_lamb-alice_01-alice"
+        / "charles_lamb-alice_01-alice.m4b"
+    )
+    assert dry_run_file.read_text(encoding="utf-8") == (
         f"{output_directory / 'charles_lamb-alice_01-alice' / 'charles_lamb-alice_01-alice.m4b'}\n"
     )
     assert (output_directory / ".audible_convert" / "logs").is_dir()