Add pytest suite, unlimited daily cap, and vocal batch generator.

Tests cover curation, Lyria, queue, and API routes. Setting max_new_songs_per_day to 0 disables the limit; generate-batch runs 20 curated multilingual vocal directions.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/test_queue.py

@@ -0,0 +1,58 @@
+from __future__ import annotations
+
+from pathlib import Path
+
+from ozan_radio.dj import TrackPlan
+from ozan_radio.lyria import GeneratedTrack
+from ozan_radio.queue import RadioQueue
+
+
+def _track(tmp_path: Path, track_id: str, title: str) -> GeneratedTrack:
+    safe = title.replace(" ", "_")
+    path = tmp_path / f"{track_id}_{safe}.mp3"
+    path.write_bytes(b"ID3")
+    plan = TrackPlan(
+        id=track_id,
+        title=title,
+        mood="test",
+        dj_line="on air",
+        lyria_prompt="test prompt",
+    )
+    return GeneratedTrack(plan=plan, audio_path=path, lyrics="")
+
+
+def test_queue_add_and_advance(tmp_path: Path):
+    q = RadioQueue(tmp_path)
+    q.add(_track(tmp_path, "aaaa1111", "One"))
+    q.add(_track(tmp_path, "bbbb2222", "Two"))
+    assert q.length == 2
+    assert q.current().plan.title == "One"
+    q.advance()
+    assert q.current().plan.title == "Two"
+
+
+def test_queue_prunes_stale_manifest_entries(tmp_path: Path):
+    q = RadioQueue(tmp_path)
+    q.add(_track(tmp_path, "aaaa1111", "Only"))
+    manifest = tmp_path / "manifest.json"
+    import json
+
+    data = json.loads(manifest.read_text(encoding="utf-8"))
+    data["tracks"].append(
+        {
+            "id": "ghost",
+            "title": "Ghost",
+            "mood": "",
+            "dj_line": "",
+            "lyria_prompt": "",
+            "lyrics": "",
+            "file": "ghost_Ghost.mp3",
+        }
+    )
+    manifest.write_text(json.dumps(data), encoding="utf-8")
+
+    q2 = RadioQueue(tmp_path)
+    assert q2.length == 1
+    cleaned = json.loads(manifest.read_text(encoding="utf-8"))
+    assert cleaned["count"] == 1
+    assert all(t["id"] != "ghost" for t in cleaned["tracks"])