feat: deposit deductions, booking payments persistence, minibar in release form

- Migrations 061 (booking_payments) + 062 (deposit_deduction_presets)
- Backend: booking payments CRUD (GET/POST/DELETE), auto-updates paid_amount on booking
- Backend: deposit deduction presets CRUD (GET/POST/PATCH/DELETE)
- Backend: GET /deposit/minibar endpoint returns minibar consumptions for booking
- Backend: release endpoint accepts items[] for itemized email to guest
- Frontend: payments loaded from API — persist across page reloads
- Frontend: deposit release form redesigned — preset buttons, minibar auto-fill, itemized list
- Frontend: onFocus select on all amount inputs (no more manual "0" removal)

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

backend/src/app.ts

@@ -41,6 +41,7 @@ import ttlockRoutes from './routes/ttlock'
 import checklistsRoutes from './routes/checklists'
 import minibarRoutes from './routes/minibar'
 import depositRoutes from './routes/deposit'
+import paymentsRoutes from './routes/payments'
 import { setupAgentWsRoute } from './agent-ws'
 import { startJobs } from './jobs'
 
@@ -134,6 +135,7 @@ export async function buildApp() {
   await fastify.register(checklistsRoutes)
   await fastify.register(minibarRoutes)
   await fastify.register(depositRoutes)
+  await fastify.register(paymentsRoutes)
   await fastify.register(setupAgentWsRoute)
 
   startJobs()