Moves all payment-related logic (manual payments, Stripe sync, webhook
handling) from the booking service into a dedicated payment service
(`internal/service/payment`). Updates server, cron, and handler wiring
to
inject and use the new payment service. Adjusts tests, routes, and
documentation to reflect the new separation of concerns.
This improves cohesion, clarifies responsibilities, and prepares for
future payment features. No database schema changes are introduced.
Introduce slog-based structured logging throughout the booking service
and
server handlers. Add configurable log level via LOG_LEVEL environment
variable. Replace legacy log usage with slog and propagate logger to
booking service for improved observability.
* refactor return error when building booking service
* fix the description
* set taxable item by amount
* auto create tax items if the item is taxable
* fix linter
* remove legacy tax entry
* display multiple items
* use the price from the form
* improve item sorting
* lintfix
