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_curation.py

@@ -0,0 +1,37 @@
+from __future__ import annotations
+
+from pathlib import Path
+
+from ozan_radio.curation import (
+    curation_summary_for_dj,
+    default_curation_block,
+    list_curated_tracks,
+)
+
+
+def test_default_curation_block_shape():
+    block = default_curation_block()
+    assert block["rating"] == "unrated"
+    assert block["public_playlist"] is True
+    assert block["shuffle_weight"] == 1.0
+
+
+def test_list_curated_tracks_sorts_love_first(songs_dir: Path):
+    tracks = list_curated_tracks(songs_dir)
+    assert len(tracks) == 2
+    assert tracks[0]["title"] == "Sahara Test"
+    assert tracks[0]["curation"]["rating"] == "love"
+
+
+def test_curation_summary_includes_loved_and_avoid(songs_dir: Path):
+    summary = curation_summary_for_dj(songs_dir)
+    assert "Sahara Test [love]" in summary
+    assert "saz" in summary
+    assert "electric guitar" in summary
+    assert "Bad Intro" not in summary  # skip-rated omitted from lines
+
+
+def test_curation_summary_empty_dir(tmp_path: Path):
+    empty = tmp_path / "songs"
+    empty.mkdir()
+    assert curation_summary_for_dj(empty) == "No curated library yet."