Add Availability Calendar, Modules system, and route refactoring

- Add AvailabilityPage with price grid (categories × dates), drag-select,
  channel prices, EditPanel, PeriodModal, and rate periods tab
- Add ModulesContext with localStorage persistence and dynamic sidebar items
- Add ModulesPage with WiFi Auth, Payments, TV Welcome, Smart Locks,
  OLAP Reports, Website Builder, Booking Widget modules
- Add ReportsPage (OLAP analytics with KPI cards, charts, tables)
- Add WebsitePage and BookingWidgetPage placeholders
- Remove hotel slug from URL routing; hotel context from JWT
- Add Доступность nav item in Sidebar under Управление
- Fix LoginPage redirects and HotelSync branding

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

src/data/ratesData.ts

@@ -0,0 +1,117 @@
+import { addDays, format, getDay } from 'date-fns'
+
+export interface RoomCategory {
+  id: string
+  name: string
+  color: string          // tailwind bg class
+  textColor: string      // tailwind text class
+  basePrice: number
+  extraPersonPrice: number
+  maxPersons: number
+}
+
+export interface ChannelRate {
+  channelId: string
+  price: number          // цена для этого канала
+}
+
+export interface PriceCell {
+  price: number
+  extraPerson: number
+  minNights: number
+  channelPrices: Record<string, number> // channelId -> price
+  closed: boolean        // закрыто для продажи
+}
+
+export interface RatePeriod {
+  id: string
+  name: string
+  startDate: string
+  endDate: string
+  notes?: string
+  categoryPrices: Record<string, number>     // categoryId -> price
+  channelMarkup: Record<string, number>      // channelId -> multiplier (1.15 = +15%)
+  extraPersonPrice: number
+  minNights: number
+  daysOfWeek?: number[]  // если задано — применяется только для этих дней (0=вс,1=пн...)
+}
+
+export const RATE_CHANNELS = [
+  { id: 'direct',      name: 'Прямые',      icon: '🏨', color: 'text-brand-600' },
+  { id: 'booking_com', name: 'Booking.com',  icon: '🔵', color: 'text-blue-600'  },
+  { id: 'airbnb',      name: 'Airbnb',       icon: '🔴', color: 'text-rose-600'  },
+  { id: 'expedia',     name: 'Expedia',       icon: '🟡', color: 'text-amber-600' },
+]
+
+export const ROOM_CATEGORIES: RoomCategory[] = [
+  { id: 'standard',     name: 'Стандарт',      color: 'bg-slate-500',   textColor: 'text-slate-600',   basePrice: 3500,  extraPersonPrice: 800,  maxPersons: 2 },
+  { id: 'deluxe',       name: 'Делюкс',        color: 'bg-brand-500',   textColor: 'text-brand-600',   basePrice: 5200,  extraPersonPrice: 1000, maxPersons: 3 },
+  { id: 'suite',        name: 'Сюит',          color: 'bg-violet-500',  textColor: 'text-violet-600',  basePrice: 8900,  extraPersonPrice: 1500, maxPersons: 4 },
+  { id: 'junior_suite', name: 'Джуниор Сюит',  color: 'bg-cyan-500',    textColor: 'text-cyan-600',    basePrice: 6800,  extraPersonPrice: 1200, maxPersons: 4 },
+  { id: 'penthouse',    name: 'Пентхаус',      color: 'bg-amber-500',   textColor: 'text-amber-600',   basePrice: 18000, extraPersonPrice: 2500, maxPersons: 6 },
+]
+
+// Дефолтные мультипликаторы каналов (markup к базовой цене)
+export const DEFAULT_CHANNEL_MARKUP: Record<string, number> = {
+  direct:      1.00,
+  booking_com: 1.00, // net price — Booking забирает свою комиссию сверху
+  airbnb:      1.05,
+  expedia:     1.03,
+}
+
+// Генерируем начальную сетку цен на 60 дней
+export function buildInitialPriceGrid(): Record<string, Record<string, PriceCell>> {
+  const result: Record<string, Record<string, PriceCell>> = {}
+  const today = new Date()
+
+  for (const cat of ROOM_CATEGORIES) {
+    result[cat.id] = {}
+    for (let i = 0; i < 60; i++) {
+      const d = addDays(today, i)
+      const dateStr = format(d, 'yyyy-MM-dd')
+      const dow = getDay(d)
+      const isWeekend = dow === 5 || dow === 6
+
+      const basePrice = Math.round(cat.basePrice * (isWeekend ? 1.25 : 1.0))
+      const channelPrices: Record<string, number> = {}
+      for (const ch of RATE_CHANNELS) {
+        channelPrices[ch.id] = Math.round(basePrice * DEFAULT_CHANNEL_MARKUP[ch.id])
+      }
+
+      result[cat.id][dateStr] = {
+        price: basePrice,
+        extraPerson: cat.extraPersonPrice,
+        minNights: 1,
+        channelPrices,
+        closed: false,
+      }
+    }
+  }
+  return result
+}
+
+// Демо-периоды
+export const DEMO_PERIODS: RatePeriod[] = [
+  {
+    id: 'p1',
+    name: 'Праздники 8 марта',
+    startDate: '2026-03-06',
+    endDate: '2026-03-10',
+    categoryPrices: { standard: 4500, deluxe: 6500, suite: 11000, junior_suite: 8500, penthouse: 22000 },
+    channelMarkup: { direct: 1.0, booking_com: 1.0, airbnb: 1.05, expedia: 1.03 },
+    extraPersonPrice: 1200,
+    minNights: 2,
+    notes: 'Повышенный спрос на праздники',
+  },
+  {
+    id: 'p2',
+    name: 'Майские праздники',
+    startDate: '2026-04-30',
+    endDate: '2026-05-10',
+    categoryPrices: { standard: 5000, deluxe: 7200, suite: 12500, junior_suite: 9800, penthouse: 25000 },
+    channelMarkup: { direct: 1.0, booking_com: 1.0, airbnb: 1.08, expedia: 1.05 },
+    extraPersonPrice: 1500,
+    minNights: 3,
+    notes: 'Минимальный заезд 3 ночи',
+  },
+]