Fix generation JSON/Lyria errors, add Winamp player, and ship Echoes of the Sahel.

Harden DeepSeek JSON parsing with retry, pre-sanitize Lyria prompts, and instrumental fallback. Add pure HTML Winamp skin at /winamp with playlist export support.

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

tests/test_lyria.py

@@ -79,10 +79,32 @@ def test_build_lyria_prompt_hindi_language(sample_plan):
 def test_sanitize_for_retry_softens_griot():
     raw = "West African griot vocal sample over dub"
     soft = _sanitize_for_retry(raw)
-    assert "griot" not in soft.lower() or "Sahel" in soft
+    assert "griot" not in soft.lower()
     assert soft != raw
 
 
+def test_sanitize_for_retry_softens_throat_singing():
+    raw = "Mongolian overtone throat singing over dub bass"
+    soft = _sanitize_for_retry(raw)
+    assert "throat singing" not in soft.lower()
+    assert "wordless" in soft.lower()
+
+
+def test_sanitize_for_retry_softens_anatolian():
+    raw = "Anatolian saz and ney with dub delay"
+    soft = _sanitize_for_retry(raw)
+    assert "anatolian" not in soft.lower()
+
+
+def test_instrumental_fallback_strips_vocals():
+    from ozan_radio.lyria import _instrumental_fallback
+
+    raw = "88 BPM dub.\nWordless male baritone hum layer.\nSub bass pulse."
+    out = _instrumental_fallback(raw)
+    assert "baritone" not in out.lower()
+    assert "Instrumental only" in out
+
+
 def test_response_parts_from_candidates():
     part = SimpleNamespace(text=None, inline_data=SimpleNamespace(data=b"audio"))
     content = SimpleNamespace(parts=[part])