chore(bundle): add openclaw.plugin.json for ClawHub bundle publish

ClawHub's bundle plugin schema started requiring openclaw.plugin.json
after our 1.0.9 publish (2026-04-30). Adding a minimal manifest so
the 1.3.0 bundle can be published.

This file is for ClawHub bundle distribution only — it does not affect
npm package, Claude Code plugin marketplace, or any other channel.

Author: jau123

plugin/openclaw.plugin.json

@@ -0,0 +1,14 @@
+{
+  "id": "meigen-ai-design",
+  "name": "AI Image Generator & Editor — GPT Image 2, Nanobanana, ComfyUI",
+  "description": "AI image and video generation across 9 leading models (GPT Image 2, Nanobanana 2, Seedream 5.0, Midjourney V8.1, Flux 2 Klein, Seedance 2.0, Happyhorse 1.0, Veo 3.1, local ComfyUI) via MCP. Works in Claude Code, Cursor, Codex, Windsurf, OpenClaw, Hermes Agent, and any MCP-compatible host.",
+  "version": "1.3.0",
+  "skills": [
+    "./skills"
+  ],
+  "configSchema": {
+    "type": "object",
+    "additionalProperties": false,
+    "properties": {}
+  }
+}