feat(mcp): add per-team server toggle

app/Http/Middleware/EnsureTeamMcpEnabled.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+use Symfony\Component\HttpFoundation\Response;
+
+class EnsureTeamMcpEnabled
+{
+    public function handle(Request $request, Closure $next): Response
+    {
+        $user = $request->user();
+        $teamId = $user?->currentAccessToken()?->team_id;
+
+        $team = $user?->teams()
+            ->where('teams.id', $teamId)
+            ->first();
+
+        if (! $team?->is_mcp_server_enabled) {
+            return response()->json(['message' => 'MCP server is disabled for this team.'], 403);
+        }
+
+        return $next($request);
+    }
+}