feat: SMS OTP auth, phone verification gate, admin comments/edit/status pages

Backend:
- Add SmsService + SmsModule: send OTP via u-site.app provider, 5-min TTL
- Auth endpoints: POST /auth/send-otp, POST /auth/phone (login by phone+code),
  POST /auth/verify-phone (link), PATCH /auth/change-password
- is_phone_verified included in JWT token response
- GET /comments (admin, JWT-protected) with author/destination names

Admin:
- Users list: link to detail page per row
- User detail: inline edit form (name, city, phone) with PATCH /users/:id
- Services list: link to detail page per row
- Service detail: status change dropdown (PATCH /services/:id/status)
- New Comments page: summary stats + full table with star ratings
- New SMS settings page: configure API key + send test SMS
- Sidebar: added Comments and SMS entries

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

admin/src/components/sidebar.tsx

@@ -11,6 +11,8 @@ import {
   MapPin,
   Wrench,
   Settings,
+  MessageSquare,
+  Star,
   LogOut,
   ChevronLeft,
   Menu,
@@ -27,6 +29,8 @@ const menu = [
   { href: '/services', label: 'Servicios', icon: ClipboardList },
   { href: '/cities', label: 'Ciudades', icon: MapPin },
   { href: '/professions', label: 'Profesiones', icon: Wrench },
+  { href: '/comments', label: 'Comentarios', icon: Star },
+  { href: '/sms', label: 'SMS', icon: MessageSquare },
   { href: '/settings', label: 'Configuración', icon: Settings },
 ];