Rental: connect to API, improve cell UI; remove price from room labels

Backend:
- Migration 015_rental.sql: rental_objects + rental_bookings tables, seed demo data
- New routes: GET/POST/PATCH/DELETE rental-objects and rental-bookings per hotel
- Register rentalRoutes in app.ts

Frontend:
- api.ts: add rental.listObjects, listBookings, createBooking, updateBooking, deleteBooking
- CalendarPage: fetch rental objects + bookings from API instead of mock data
- BookingCalendar: rental cell UI redesigned — colored squares + working hours + time slots (matches design spec)
- BookingCalendar: remove base rate price from desktop room label column (irrelevant with dynamic pricing)

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

src/pages/CalendarPage.tsx

@@ -1,9 +1,9 @@
 import { useState, useEffect, useCallback, useRef } from 'react'
 import { BookingCalendar } from '../components/calendar/BookingCalendar'
-import { RENTAL_OBJECTS, MOCK_RENTAL_BOOKINGS } from '../data/rentalData'
 import { useModules } from '../contexts/ModulesContext'
 import { useAuth } from '../contexts/AuthContext'
 import { api } from '../lib/api'
+import type { RentalObjectApi, RentalBookingApi } from '../lib/api'
 import { useHotelSocket } from '../hooks/useHotelSocket'
 import type { WsMessage } from '../hooks/useHotelSocket'
 import type { Room, Booking } from '../types'
@@ -20,19 +20,29 @@ export function CalendarPage() {
   const [rooms, setRooms] = useState<Room[]>([])
   const [bookings, setBookings] = useState<Booking[]>([])
   const [fadingBookings, setFadingBookings] = useState<Set<string>>(new Set())
-  const [rentalBookings, setRentalBookings] = useState<RentalBooking[]>(MOCK_RENTAL_BOOKINGS)
+  const [rentalObjects, setRentalObjects] = useState<RentalObjectApi[]>([])
+  const [rentalBookings, setRentalBookings] = useState<RentalBookingApi[]>([])
   const [locks, setLocks] = useState<Map<string, BookingLock>>(new Map())
 
   useEffect(() => {
     if (!slug) return
-    Promise.all([
+    const fetches: Promise<unknown>[] = [
       api.rooms.list(slug),
       api.bookings.list(slug),
-    ]).then(([r, b]) => {
-      setRooms(r)
-      setBookings(b)
+    ]
+    if (isRentalActive) {
+      fetches.push(api.rental.listObjects(slug))
+      fetches.push(api.rental.listBookings(slug))
+    }
+    Promise.all(fetches).then(([r, b, ro, rb]) => {
+      setRooms(r as Room[])
+      setBookings(b as Booking[])
+      if (isRentalActive) {
+        setRentalObjects(ro as RentalObjectApi[])
+        setRentalBookings(rb as RentalBookingApi[])
+      }
     }).catch(console.error)
-  }, [slug])
+  }, [slug, isRentalActive])
 
   const handleWsMessage = useCallback((msg: WsMessage) => {
     if (msg.type === 'lock') {
@@ -130,6 +140,28 @@ export function CalendarPage() {
     send({ type: 'unlock', roomId })
   }, [send])
 
+  const handleRentalBookingCreate = useCallback(async (b: RentalBooking) => {
+    try {
+      const created = await api.rental.createBooking(slug, {
+        object_id: b.objectId,
+        date: b.date,
+        is_full_day: b.isFullDay,
+        start_hour: b.startHour,
+        end_hour: b.endHour,
+        guest_name: b.guestName,
+        guest_phone: b.guestPhone ?? '',
+        linked_room_id: b.linkedRoomId,
+        total_amount: b.totalAmount,
+        paid_amount: b.paidAmount ?? 0,
+        status: b.status,
+        notes: b.notes,
+      })
+      setRentalBookings(prev => [...prev, created])
+    } catch (err) {
+      console.error('Failed to create rental booking:', err)
+    }
+  }, [slug])
+
   return (
     <div className="flex flex-col h-full">
       <div className="flex-1 overflow-hidden">
@@ -141,9 +173,9 @@ export function CalendarPage() {
           onBookingUpdate={handleUpdate}
           onBookingBulkUpdate={handleBulkUpdate}
           fadingBookingIds={fadingBookings}
-          rentalObjects={isRentalActive ? RENTAL_OBJECTS : undefined}
-          rentalBookings={isRentalActive ? rentalBookings : undefined}
-          onRentalBookingCreate={isRentalActive ? (b: RentalBooking) => setRentalBookings(prev => [...prev, b]) : undefined}
+          rentalObjects={isRentalActive ? rentalObjects as unknown as import('../data/rentalData').RentalObject[] : undefined}
+          rentalBookings={isRentalActive ? rentalBookings as unknown as RentalBooking[] : undefined}
+          onRentalBookingCreate={isRentalActive ? handleRentalBookingCreate : undefined}
           locks={locks}
           onDraftStart={handleDraftStart}
           onDraftCancel={handleDraftCancel}