Add sonatype-guide plugin to marketplace

Co-authored-by: claude <noreply@anthropic.com>

.claude-plugin/marketplace.json

@@ -639,16 +639,6 @@
         "url": "https://github.com/sonatype/sonatype-guide-claude-plugin.git"
       },
       "homepage": "https://github.com/sonatype/sonatype-guide-claude-plugin.git"
-    },
-    {
-      "name": "firecrawl",
-      "description": "Web scraping and crawling powered by Firecrawl. Turn any website into clean, LLM-ready markdown or structured data. Scrape single pages, crawl entire sites, search the web, and extract structured information. Includes an AI agent for autonomous multi-source data gathering - just describe what you need and it finds, navigates, and extracts automatically.",
-      "category": "development",
-      "source": {
-        "source": "url",
-        "url": "https://github.com/firecrawl/firecrawl-claude-plugin.git"
-      },
-      "homepage": "https://github.com/firecrawl/firecrawl-claude-plugin.git"
     }
   ]
 }

external_plugins/slack/.mcp.json

@@ -1,10 +1,6 @@
 {
   "slack": {
-    "type": "http",
-    "url": "https://mcp.slack.com/mcp",
-    "oauth": {
-      "clientId": "1601185624273.8899143856786",
-      "callbackPort": 3118
-    }
+    "type": "sse",
+    "url": "https://mcp.slack.com/sse"
   }
 }