Add the Moon Jelly companion

registry/companions/community.moon-jelly/LICENSE

@@ -0,0 +1,19 @@
+SPDX-License-Identifier: CC-BY-4.0
+
+Moon Jelly companion artwork
+Copyright (c) 2026 Agent Notifier
+
+Original artwork, generated procedurally by tools/artwork/lib/jelly.mjs in this
+repository. No third-party intellectual property is used or depicted.
+
+Licensed under the Creative Commons Attribution 4.0 International License.
+You may share and adapt this artwork for any purpose, including commercially,
+provided you give appropriate credit.
+
+Full licence text: https://creativecommons.org/licenses/by/4.0/legalcode
+
+The first line of this file is machine-readable and is what the build gate
+reads to populate the licence shown on the companion's page. Every companion in
+this registry must carry one, because PRODUCT-SPEC E-3 requires a developer at a
+company to be able to see what they are allowed to use, and section 9 makes a
+100% licence-clean catalogue a launch metric.

registry/companions/community.moon-jelly/manifest.json

@@ -0,0 +1,17 @@
+{
+  "version": 2,
+  "id": "community.moon-jelly",
+  "displayName": "Moon Jelly",
+  "author": "Agent Notifier",
+  "summary": "A moon jellyfish that drifts above your workspace, bell pulsing and tentacles trailing behind it",
+  "symbolName": "drop.fill",
+  "movementStyle": "airborne",
+  "renderer": "sprite",
+  "animation": {
+    "fps": 12,
+    "frameCount": 24,
+    "width": 256,
+    "height": 256,
+    "loop": "forward"
+  }
+}