Add Rate Monitor app — Booking.com + direct booking engine competitor rates

Combines Booking.com Playwright scraper (from forecasting), direct booking
engine scraper (ported from laptop-archive/guestline-monitor), and Newbook
own-hotel rates into one focused tool. Four views: Bookability, Market View
(with price index badges + direct rate sub-rows), Direct Rates (per-competitor
room breakdown, min-stay flags, hotel config/discovery), Rate Analysis
(advance purchase curve, DOW chart, rate timeline, comparison table).

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

frontend/src/types.ts

@@ -0,0 +1,114 @@
+export interface User {
+  email: string
+  name: string
+  is_admin: boolean
+  caps: string[]
+}
+
+export function can(user: User | null, cap: string): boolean {
+  if (!user) return false
+  return user.is_admin || user.caps.includes(cap)
+}
+
+export interface Hotel {
+  id: number
+  name: string
+  tier: 'own' | 'competitor' | 'market'
+  star_rating: number | null
+  review_score: number | null
+  booking_com_url: string | null
+  booking_com_id: string | null
+  display_order: number
+  notes: string | null
+  is_active: boolean
+  scraped_dates?: number
+  last_scraped?: string | null
+}
+
+export interface RateMatrixEntry {
+  hotel_id: number
+  hotel_name: string
+  tier: string
+  rate_date: string
+  rate_gross: number | null
+  availability_status: string
+  rooms_left: number | null
+  scraped_at: string | null
+}
+
+export interface ScraperStatus {
+  enabled: boolean
+  paused: boolean
+  pause_until: string | null
+  backend: string
+  daily_time: string
+  last_batch: {
+    batch_id: string
+    started_at: string
+    status: string
+    rates_scraped: number
+    dates_completed: number
+  } | null
+}
+
+export interface BookabilityCategory {
+  category_id: string
+  category_name: string
+  room_count: number
+  display_order: number
+  dates: BookabilityDate[]
+}
+
+export interface BookabilityDate {
+  date: string
+  gross_rate: number | null
+  tariffs: TariffSummary[]
+  occupancy_pct: number | null
+  available_rooms: number | null
+  is_bookable: boolean
+}
+
+export interface TariffSummary {
+  tariff_name: string
+  rate: number | null
+  min_stay: number | null
+  advance_max: number | null
+  is_available: boolean
+}
+
+export interface AdvancePurchaseCurvePoint {
+  lead_bucket: string
+  avg_rate: number
+  sample_count: number
+}
+
+export interface DowAnalysisPoint {
+  dow: number
+  dow_label: string
+  avg_rate: number
+  date_count: number
+}
+
+export interface StrategySummary {
+  advance_discount_pct: number | null
+  weekend_premium_pct: number | null
+  avg_sold_out_rate_pct: number | null
+  strategy_label: string
+}
+
+export interface HotelAnalysis {
+  hotel: Hotel
+  date_range: { from: string; to: string }
+  advance_purchase_curve: AdvancePurchaseCurvePoint[]
+  dow_analysis: DowAnalysisPoint[]
+  sold_out_pattern: Array<{ dow: number; dow_label: string; total_dates: number; sold_out_dates: number }>
+  strategy_summary: StrategySummary
+}
+
+export interface RateTimelinePoint {
+  scraped_at: string
+  rate_gross: number | null
+  availability_status: string
+  rooms_left: number | null
+  days_out: number
+}