feat: add marketplace.json for claudemarketplaces.com discovery

Author: LuciferDono

.claude-plugin/marketplace.json

@@ -0,0 +1,50 @@
+{
+  "name": "contribute-marketplace",
+  "owner": {
+    "name": "LuciferDono",
+    "email": "pranavj821@gmail.com"
+  },
+  "metadata": {
+    "description": "Full-lifecycle open-source contribution workflow plugin for Claude Code. 12 phases: discover, analyze, work, test, submit, review, debug, pr-review, triage, sync, release, cleanup.",
+    "version": "1.0.0"
+  },
+  "plugins": [
+    {
+      "name": "contribute",
+      "source": {
+        "source": "github",
+        "repo": "LuciferDono/contribute"
+      },
+      "description": "Full-lifecycle open-source contribution workflow: discover issues, analyze repos, write code, test with 85% quality gate, submit PRs, debug CI failures, and respond to review feedback. 12 phases, 3 operating modes, 6 safety rules.",
+      "version": "1.0.0",
+      "author": {
+        "name": "LuciferDono"
+      },
+      "homepage": "https://github.com/LuciferDono/contribute",
+      "repository": "https://github.com/LuciferDono/contribute",
+      "license": "MIT",
+      "keywords": [
+        "open-source",
+        "contribution",
+        "github",
+        "pull-request",
+        "code-review",
+        "testing",
+        "workflow",
+        "debugging",
+        "triage",
+        "release"
+      ],
+      "category": "productivity",
+      "tags": [
+        "open-source",
+        "github",
+        "contribution-workflow",
+        "code-review",
+        "testing",
+        "pull-request",
+        "ci-debugging"
+      ]
+    }
+  ]
+}