refactor(qa): split Matrix QA into optional plugin (#66723)

Merged via squash.

Prepared head SHA: 27241bd089
Co-authored-by: gumadeiras <5599352+gumadeiras@users.noreply.github.com>
Co-authored-by: gumadeiras <5599352+gumadeiras@users.noreply.github.com>
Reviewed-by: @gumadeiras

extensions/qa-matrix/package.json

@@ -0,0 +1,34 @@
+{
+  "name": "@openclaw/qa-matrix",
+  "version": "2026.4.12",
+  "description": "OpenClaw Matrix QA runner plugin",
+  "type": "module",
+  "devDependencies": {
+    "@openclaw/plugin-sdk": "workspace:*",
+    "openclaw": "workspace:*"
+  },
+  "peerDependencies": {
+    "openclaw": ">=2026.4.12"
+  },
+  "peerDependenciesMeta": {
+    "openclaw": {
+      "optional": true
+    }
+  },
+  "openclaw": {
+    "extensions": [
+      "./index.ts"
+    ],
+    "install": {
+      "npmSpec": "@openclaw/qa-matrix",
+      "defaultChoice": "npm",
+      "minHostVersion": ">=2026.4.12"
+    },
+    "compat": {
+      "pluginApi": ">=2026.4.12"
+    },
+    "build": {
+      "openclawVersion": "2026.4.12"
+    }
+  }
+}