Clean release snapshot

scripts/split_stems.py

@@ -0,0 +1,24 @@
+#!/usr/bin/env python3
+"""Stub: the standalone sloppak stem-splitting tool has been removed.
+
+This script previously split a sloppak's full-mix stem into per-instrument
+stems via Demucs. Its implementation lived in the removed `sloppak_convert`
+module. Use the in-app stem separation (Studio / stem-mixer) instead.
+"""
+
+from __future__ import annotations
+
+import sys
+
+
+def main() -> int:
+    print(
+        "split_stems.py: the stem-splitting tool is no longer available.\n"
+        "Use the in-app stem separation (Studio / stem-mixer) instead.",
+        file=sys.stderr,
+    )
+    return 2
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())