chore: add gray-matter dependency for frontmatter parsing

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

package.json

@@ -62,7 +62,8 @@
   "dependencies": {
     "@agentclientprotocol/sdk": "^0.19.0",
     "@claude-code-best/mcp-chrome-bridge": "^2.0.8",
-    "ws": "^8.20.0"
+    "ws": "^8.20.0",
+    "gray-matter": "^4.0.3"
   },
   "devDependencies": {
     "@alcalzone/ansi-tokenize": "^0.3.0",
@@ -199,4 +200,4 @@
     "yaml": "^2.8.3",
     "zod": "^4.3.6"
   }
-}
+}