Moves approve, reject, cancel, and request vacation business logic
out of the tRPC procedure layer into packages/application, matching
the pattern used by allocation use-cases.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- applyProjectScenario: wrap assignment loop in db.$transaction to prevent partial updates
- vacation approve/reject: fix TOCTOU race via updateMany with status-guard in WHERE + CONFLICT on count=0
- vacation cancel: wrap vacation.update + entitlement.updateMany in $transaction
- batchApprove: collect mutations, wrap in $transaction, dispatch SSE/notifications after commit
- Fix dead-code bug in createHappyPathDb where $transaction was assigned after return
- Add atomicity and concurrency tests
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Hartmut