🤖 Add Codex marketplace metadata

plugins/g4b_ai/.codex-plugin/plugin.json

@@ -0,0 +1,23 @@
+{
+  "name": "g4b_ai",
+  "version": "0.1.0",
+  "description": "Gabor's personal Codex skills: workpad, research-tree, implementation-orchestration, markdown-embedded-svg.",
+  "author": {
+    "name": "Gabor Korber",
+    "email": "gab@g4b.org"
+  },
+  "skills": "./skills/",
+  "interface": {
+    "displayName": "g4b_ai",
+    "shortDescription": "Personal project workflow skills for Codex.",
+    "longDescription": "Workpad placement, research orchestration, implementation orchestration, and Markdown SVG guidance.",
+    "developerName": "Gabor Korber",
+    "category": "Productivity",
+    "capabilities": ["Skills"],
+    "defaultPrompt": [
+      "Use workpad for this project's planning notes.",
+      "Research this as a dependency tree.",
+      "Plan and execute this implementation."
+    ]
+  }
+}