ios: source.json for 1.0.15

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

ios/source.json

@@ -15,6 +15,15 @@
       "tintColor": "#FA2D48",
       "category": "entertainment",
       "versions": [
+        {
+          "version": "1.0.15",
+          "buildVersion": "16",
+          "date": "2026-10-20T14:22:36-07:00",
+          "localizedDescription": "Mixer faders use the spare height on Now Playing, with more room above the seek bar. Unsigned IPA for Sideloadly, AltStore, SideStore or Feather.",
+          "downloadURL": "https://git.iamchrisama.com/cdnutter/stemify/releases/download/ios-v1.0.15/stemify-1.0.15.ipa",
+          "size": 1626425,
+          "minOSVersion": "17.0"
+        },
         {
           "version": "1.0.14",
           "buildVersion": "15",