diff --git a/.gitea/workflows/build.yml b/.gitea/workflows/build.yml
index 3c2930c..730c581 100644
--- a/.gitea/workflows/build.yml
+++ b/.gitea/workflows/build.yml
@@ -49,42 +49,37 @@ jobs:
           cd ..
           ls -la iOS-hello_world.ipa
 
-      - name: Generate source.json
+      - name: Generate app metadata
         run: |
           VERSION="1.0"
           SIZE=$(stat -f%z iOS-hello_world.ipa)
           DATE=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
-          cat > source.json <<EOF
+          # Per-app metadata file. The perlis aggregator folds this into the
+          # root source.json at https://apps.bueso.eu/source.json.
+          cat > iOS-hello_world.json <<EOF
           {
             "name": "Hello World",
-            "identifier": "com.example.helloworld.source",
-            "sourceURL": "https://apps.bueso.eu/ios-hello_world/source.json",
-            "apps": [
-              {
-                "name": "Hello World",
-                "bundleIdentifier": "com.example.helloworld",
-                "developerName": "Luis",
-                "localizedDescription": "Hello World iOS app built via Gitea Actions.",
-                "iconURL": "https://apps.bueso.eu/ios-hello_world/icon.png",
-                "downloadURL": "https://apps.bueso.eu/ios-hello_world/iOS-hello_world.ipa",
-                "version": "$VERSION",
-                "versionDate": "$DATE",
-                "size": $SIZE,
-                "permissions": []
-              }
-            ]
+            "bundleIdentifier": "com.example.helloworld",
+            "developerName": "Luis",
+            "localizedDescription": "Hello World iOS app built via Gitea Actions.",
+            "iconURL": "https://apps.bueso.eu/ios-hello_world/icon.png",
+            "downloadURL": "https://apps.bueso.eu/ios-hello_world/iOS-hello_world.ipa",
+            "version": "$VERSION",
+            "versionDate": "$DATE",
+            "size": $SIZE,
+            "permissions": []
           }
           EOF
-          cat source.json
+          cat iOS-hello_world.json
 
       - name: Upload to source host (perlis)
         run: |
-          # Upload .ipa + source.json to perlis via SSH.
+          # Upload .ipa + per-app metadata to perlis via SSH.
           # PERLIS_SSH_HOST is the Tailscale MagicDNS name (perlis.bueso.loc),
           # reachable from the iMac runner over the Tailscale mesh.
           ssh -o StrictHostKeyChecking=no \
             "${{ secrets.PERLIS_SSH_USER }}@${{ secrets.PERLIS_SSH_HOST }}" \
             "mkdir -p /mnt/appdata/ios-apps/ios-hello_world"
           scp -o StrictHostKeyChecking=no \
-            iOS-hello_world.ipa source.json \
+            iOS-hello_world.ipa iOS-hello_world.json \
             "${{ secrets.PERLIS_SSH_USER }}@${{ secrets.PERLIS_SSH_HOST }}:/mnt/appdata/ios-apps/ios-hello_world/"