popertotsandSisyphus 0beaa6e117 feat(backend): add referral discount preview and transactional campaign safety ...

Add referral discount to payment preview for users with unused referral discounts.

- Check referral_discounts table for unused discounts in calculateDiscountPreview
- Wrap campaign discount application in a proper database transaction
- Apply eligibility guard for 2nd+ payments to prevent duplicate discount application

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

2026-06-20 16:58:46 +01:00

..

auth

refactor(backend): migrate from sql.ErrNoRows to pgx.ErrNoRows

2026-06-20 16:58:08 +01:00

db

refactor(backend): migrate test infrastructure to isolated databases

2026-06-20 16:56:57 +01:00

handlers

feat(backend): add referral discount preview and transactional campaign safety

2026-06-20 16:58:46 +01:00

internal

feat(backend): add name history tracking, booking pagination, and CardDAV improvements

2026-06-20 16:58:29 +01:00

mw

feat(backend): update rate limiting middleware

2026-06-18 16:26:06 +01:00

testutils

refactor(backend): migrate test infrastructure to isolated databases

2026-06-20 16:56:57 +01:00

Dockerfile

Initial commit. Working login, example UI with prototype and demo, connections to DB and DAV, local and prod setups.

2025-10-12 22:13:19 +01:00

go.mod

deps(backend): update Go module dependencies

2026-06-18 16:25:47 +01:00

go.sum

deps(backend): update Go module dependencies

2026-06-18 16:25:47 +01:00

main_test.go

refactor(backend): migrate test infrastructure to isolated databases

2026-06-20 16:56:57 +01:00

main.go

refactor(backend): migrate test infrastructure to isolated databases

2026-06-20 16:56:57 +01:00

testmain_test.go

refactor(backend): migrate test infrastructure to isolated databases

2026-06-20 16:56:57 +01:00