more Sparkle tests

scripts/bump_version.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+VERSION_FILE="$ROOT_DIR/version.json"
+
+new_version="$(python3 - "$VERSION_FILE" <<'PY'
+import json, sys, pathlib
+path = pathlib.Path(sys.argv[1])
+data = json.loads(path.read_text())
+current = data.get("marketing_version")
+if not current:
+    raise SystemExit("marketing_version missing in version.json")
+parts = current.split(".")
+if len(parts) != 3 or not all(part.isdigit() for part in parts):
+    raise SystemExit(f"Invalid marketing_version format: {current}")
+parts[-1] = str(int(parts[-1]) + 1)
+data["marketing_version"] = ".".join(parts)
+path.write_text(json.dumps(data, indent=2) + "\n")
+print(data["marketing_version"])
+PY
+)"
+
+echo "$new_version"