Package BCQuality as an installable plugin (experiment)

Adds a marketplace + plugin manifest and a bridge review skill that drives the existing Entry protocol from a plugin host. No changes to knowledge or routing logic.

.claude-plugin/marketplace.json

@@ -0,0 +1,15 @@
+{
+  "name": "bcquality",
+  "owner": {
+    "name": "microsoft/BCQuality",
+    "url": "https://github.com/microsoft/BCQuality"
+  },
+  "plugins": [
+    {
+      "name": "bcquality",
+      "source": "./",
+      "description": "Business Central AL quality knowledge base and review skills, packaged as an installable plugin. Ships the entire BCQuality tree (skills, knowledge, tools) so the Entry routing protocol runs against the installed clone.",
+      "version": "0.1.0"
+    }
+  ]
+}

.claude-plugin/plugin.json

@@ -0,0 +1,9 @@
+{
+  "name": "bcquality",
+  "description": "Quality skills and knowledge for Business Central development. Exposes a review bridge skill that drives the BCQuality Entry protocol over the installed knowledge base.",
+  "version": "0.1.0",
+  "author": {
+    "name": "microsoft/BCQuality",
+    "url": "https://github.com/microsoft/BCQuality"
+  }
+}