Initial commit: HotelSync PMS v0.1.0

- React 18 + TypeScript + Vite + Tailwind CSS
- Шахматка бронирований (drag-to-book)
- Страницы: Calendar, Bookings, Rooms, Housekeeping, Channels, API Docs, Settings
- Роли: super_admin, hotel_manager, housekeeper
- Светлая/тёмная тема
- Docker + Nginx конфигурация
- Лендинг hotelsync.ru

src/contexts/AuthContext.tsx

@@ -0,0 +1,47 @@
+import { createContext, useContext, useState } from 'react'
+import type { User, AuthSession } from '../types'
+import { MOCK_USERS } from '../data/mockData'
+
+interface AuthContextValue {
+  session: AuthSession | null
+  user: User | null
+  login: (email: string, password: string) => Promise<boolean>
+  logout: () => void
+}
+
+const AuthContext = createContext<AuthContextValue | null>(null)
+
+export function AuthProvider({ children }: { children: React.ReactNode }) {
+  const [session, setSession] = useState<AuthSession | null>(() => {
+    const stored = sessionStorage.getItem('hotelsync-session')
+    return stored ? JSON.parse(stored) : null
+  })
+
+  const login = async (email: string, _password: string): Promise<boolean> => {
+    // Mock authentication — in production, call POST /auth/login
+    await new Promise(r => setTimeout(r, 800))
+    const user = MOCK_USERS.find(u => u.email.toLowerCase() === email.toLowerCase())
+    if (!user) return false
+    const s: AuthSession = { user, token: 'mock-jwt-token-' + user.id }
+    setSession(s)
+    sessionStorage.setItem('hotelsync-session', JSON.stringify(s))
+    return true
+  }
+
+  const logout = () => {
+    setSession(null)
+    sessionStorage.removeItem('hotelsync-session')
+  }
+
+  return (
+    <AuthContext.Provider value={{ session, user: session?.user ?? null, login, logout }}>
+      {children}
+    </AuthContext.Provider>
+  )
+}
+
+export function useAuth() {
+  const ctx = useContext(AuthContext)
+  if (!ctx) throw new Error('useAuth must be used within AuthProvider')
+  return ctx
+}