feat: add WiFi authorization module

- Backend: hotel_wifi_settings table (migration 046), CRUD routes
- Public API endpoint /api/wifi-auth/verify for captive portal
- Auth methods: room+lastname, room+birthdate, room+any, room_only
- Frontend: WiFiPage with settings, token management, setup guide
- Guide tabs: MikroTik, UniFi, Universal with copy-paste instructions
- Sidebar: WiFi item in Settings group

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

src/components/layout/Sidebar.tsx

@@ -3,7 +3,7 @@ import { useState, useEffect } from 'react'
 import {
   CalendarDays, BookOpen, BedDouble, Globe, Settings,
   FileText, LayoutDashboard, Building2, Users, X, Hotel, Puzzle, CalendarRange, Map, LayoutGrid, UserCog, UsersRound,
-  TrendingUp, Tag, Award, Wrench, Utensils, CalendarClock, Zap, ChevronRight, Star, CreditCard, Monitor,
+  TrendingUp, Tag, Award, Wrench, Utensils, CalendarClock, Zap, ChevronRight, Star, CreditCard, Monitor, Wifi,
 } from 'lucide-react'
 import { useAuth } from '../../contexts/AuthContext'
 import { useModules } from '../../contexts/ModulesContext'
@@ -185,7 +185,7 @@ export function Sidebar({ open, onClose }: SidebarProps) {
       prices:       ['/tariffs', '/dynamic-pricing', '/discounts', '/rental'],
       service:      ['/housekeeping', '/technical', ...activeModuleItems.map(m => m.sidebarItem!.path)],
       management:   ['/users', '/schedule', '/loyalty', '/maintenance', '/floor-map', '/channels'],
-      settingsGroup:['/modules', '/settings', '/billing', '/equipment'],
+      settingsGroup:['/modules', '/settings', '/billing', '/equipment', '/wifi'],
       devGroup:     ['/api-docs'],
     }
 
@@ -233,6 +233,7 @@ export function Sidebar({ open, onClose }: SidebarProps) {
     { to: '/modules',         icon: Puzzle,         label: 'Модули' },
     { to: '/settings',        icon: Settings,       label: 'Настройки' },
     { to: '/equipment',       icon: Monitor,        label: 'Оборудование' },
+    { to: '/wifi',            icon: Wifi,           label: 'WiFi авторизация' },
     // dev
     { to: '/api-docs',        icon: FileText,       label: 'API & Документация' },
   ]
@@ -415,6 +416,7 @@ export function Sidebar({ open, onClose }: SidebarProps) {
                       <NavItem to="/settings"  icon={Settings}    label="Настройки"       {...navItemProps} />
                       <NavItem to="/billing"   icon={CreditCard}  label="Тарифы и оплата" {...navItemProps} />
                       <NavItem to="/equipment" icon={Monitor}     label="Оборудование"    {...navItemProps} />
+                      <NavItem to="/wifi"      icon={Wifi}        label="WiFi авторизация" {...navItemProps} />
                     </div>
                   )}
                 </>