feat(mcp): add MCP server with read-only tools for Coolify resources

Add Model Context Protocol server exposing Coolify infrastructure data
to AI assistants. Includes tools for listing/fetching servers, projects,
applications, databases, and services, scoped to authenticated team tokens.

- Add CoolifyServer with 10 read-only tools (list/get for all resource types)
- Add BuildsResponse and ResolvesTeam traits for shared tool logic
- Add EnsureMcpEnabled middleware guarding /mcp routes
- Add enable/disable MCP API endpoints (root-only)
- Add is_mcp_server_enabled toggle in instance settings and advanced UI
- Add migration for is_mcp_server_enabled column
- Add feature tests for MCP endpoints and toggle API
- Scrub sensitive keys (passwords, tokens, raw IDs) from all responses

app/Mcp/Concerns/ResolvesTeam.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace App\Mcp\Concerns;
+
+use Laravel\Mcp\Request;
+use Laravel\Mcp\Response;
+
+trait ResolvesTeam
+{
+    protected function ensureAbility(Request $request, string $ability = 'read'): ?Response
+    {
+        $user = $request->user();
+        if (! $user) {
+            return Response::error('Unauthenticated.');
+        }
+
+        $token = $user->currentAccessToken();
+        if (! $token) {
+            return Response::error('Invalid token.');
+        }
+
+        if ($token->can('root') || $token->can($ability)) {
+            return null;
+        }
+
+        return Response::error("Missing required permissions: {$ability}");
+    }
+
+    protected function resolveTeamId(Request $request): ?int
+    {
+        $token = $request->user()?->currentAccessToken();
+
+        return $token?->team_id;
+    }
+}