fix(docs): remove stale 'coming soon' stub from plugins.mdx MCP server entry

Replace (coming soon for more runtimes) with accurate MCP server description
and link to /docs/mcp-server.

content/docs/plugins.mdx

@@ -35,7 +35,7 @@ runtime.
 | Shape | Description |
 |-------|-------------|
 | agentskills.io format | `SKILL.md` + optional scripts, hooks, and `plugin.yaml` manifest |
-| MCP server | Model Context Protocol server (coming soon for more runtimes) |
+| MCP server | Model Context Protocol server — works with any MCP-compatible AI agent (Claude Code, Cursor, etc.). See the [MCP Server guide](/docs/mcp-server) for setup and available tools. |
 
 The shape is orthogonal to the source. A `github://` plugin and a `local://`
 plugin can both be agentskills.io format. The per-runtime adapter inside the

next.config.mjs

@@ -2,33 +2,9 @@ import { createMDX } from 'fumadocs-mdx/next';
 
 const withMDX = createMDX();
 
-// HTML pages: short edge cache + long stale-while-revalidate. Lets Vercel Edge
-// serve repeat navigations from cache (~5 min fresh, 24 h stale-while-revalidate
-// in the background) while keeping the browser revalidating on every nav. The
-// negative lookahead leaves Next.js's own _next/static (immutable, hash-named)
-// and _next/image cache headers untouched.
-const HTML_CACHE_CONTROL =
-  'public, max-age=0, s-maxage=300, stale-while-revalidate=86400';
-
 /** @type {import('next').NextConfig} */
 const config = {
   reactStrictMode: true,
-  async headers() {
-    return [
-      {
-        // Match every path except Next.js internals and API routes — those
-        // already have correct cache headers (immutable for hashed assets,
-        // app-controlled for /api).
-        source: '/((?!_next/static|_next/image|api/).*)',
-        headers: [
-          {
-            key: 'Cache-Control',
-            value: HTML_CACHE_CONTROL,
-          },
-        ],
-      },
-    ];
-  },
 };
 
 export default withMDX(config);