Add transactional outbox table for vault lifecycle events in db/migrations and src/services/eventProcessor.ts

[1nonlypiece]

Add transactional outbox table for vault lifecycle events in db/migrations and src/services/eventProcessor.ts

Description

src/services/eventProcessor.ts writes vault state and triggers notifications in the same flow, which loses notifications if the process crashes between the DB commit and the queue push. Add a transactional outbox: write events to a vault_outbox table within the same Prisma transaction, and let a separate worker dispatch them at-least-once.

Requirements and context

• Must be secure, tested, and documented
• Should be efficient and easy to review
• New Knex migration creating vault_outbox(id, type, payload_json, created_at, dispatched_at)
• Add OutboxDispatcher worker in src/jobs/handlers.ts
• Add src/tests/outboxDispatcher.test.ts
• Update docs/event-processing.md
• Reuse retry strategy from src/utils/retry.ts

Suggested execution

• Fork the repo and create a branch
• git checkout -b feat/vault-outbox
• Implement changes
  • Add migration and Prisma model
  • Update event processor
  • Add tests and docs
• Test and commit
  • Run npm run migrate:latest && npm test
  • Include test output and notes

Example commit message

feat: transactional outbox for vault lifecycle events

Guidelines

• Minimum 95 percent test coverage
• Clear documentation
• Timeframe: 96 hours

[fathiaoyinloye]

@fathiaoyinloye has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

I'm a software engineer and I'd love to work on this issue. Could you assign it to me?

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