Claude Code Opus 4.5: added types to all service methods, first pass

Completed Changes

Service files - Added entity types and raw DB row types:

• customers.ts - Added Customer type, CustomerInput type
• transactions.ts - Added Transaction, TransactionRow types
• events.ts - Added Event, EventRow types (with numeric field conversion)
• guests.ts - Added Guest, GuestInput, GuestQueryOptions types
• tickets.ts - Added Ticket, CustomerTicket, CustomerAccommodation, TicketInspection types
• orders.ts - Added Order, OrderRow, OrderWithItems, OrderRowWithItems types
• products.ts - Added Product, ProductRow types with convertPriceToNumber
• promos.ts - Added PromoRow type with convertPriceAndDiscountsToNumbers
• email.ts - Added parameter types to all functions

Route files - Added isRecordLike guards:

• guests.ts, customers.ts, products.ts, promos.ts, events.ts, orders.ts, sites.ts

Remaining TypeScript Errors (Pre-existing)

The ~170 remaining errors are not caused by these changes but rather:

1. Missing type declarations for braintree, mailgun-js, qrcode modules
2. unknown type in catch blocks - TypeScript strict mode requires typed error handling
3. Router middleware types - Koa Router types don't match AppContext types
4. Null/undefined safety - Many possibly undefined warnings on existing code

These pre-existing issues were previously masked by implicit any types. Fixing them would require:

• Installing @types/braintree, @types/mailgun-js
• Adding error type guards in catch blocks
• Properly typing the Koa Router instances
• Adding null checks where values may be undefined