docs: clarify that this is a bundled MCP server + plugin + skill

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: RandomSynergy17

README.md

@@ -30,7 +30,13 @@
 
 ## What is this?
 
-Arcane MCP Server connects your AI assistant to your [Arcane](https://github.com/getarcaneapp/arcane) Docker management platform. Instead of clicking through dashboards and running CLI commands, you just *talk* to your infrastructure:
+Arcane MCP Server is a complete AI-powered Docker management bundle — an **MCP server**, a **Claude Code plugin**, and a **companion skill**, all in one package.
+
+- The **MCP server** gives your AI assistant 180 tools to control your [Arcane](https://github.com/getarcaneapp/arcane) Docker platform — containers, images, stacks, Swarm clusters, security scans, and more.
+- The **plugin** wraps everything into a single install with guided configuration — no manual env vars or config files.
+- The **companion skill** teaches your AI *how* to use those tools — safe deployment workflows, troubleshooting patterns, and guardrails so it doesn't accidentally nuke your volumes.
+
+Instead of clicking through dashboards and running CLI commands, you just *talk* to your infrastructure:
 
 > "What's running on production?"
 >