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/Models/InstanceSettings.php

@@ -45,6 +45,7 @@ class InstanceSettings extends Model
         'is_sponsorship_popup_enabled',
         'dev_helper_version',
         'is_wire_navigate_enabled',
+        'is_mcp_server_enabled',
     ];
 
     protected $casts = [
@@ -67,6 +68,7 @@ class InstanceSettings extends Model
         'update_check_frequency' => 'string',
         'sentinel_token' => 'encrypted',
         'is_wire_navigate_enabled' => 'boolean',
+        'is_mcp_server_enabled' => 'boolean',
     ];
 
     protected static function booted(): void