Add a vault webhook event-replay-from-outbox endpoint scoped by vault id to src/services/outboxRelay.ts

[1nonlypiece]

📌 Description

The transactional outbox in src/services/outboxRelay.ts drains vault
lifecycle events to webhooks and ETL, marking rows processed. When a subscriber
was misconfigured or down, there is a replay-by-time-range admin tool, but no way
to replay all events for a single vault — the common support request when one
integration missed one vault's lifecycle.

This issue adds a per-vault outbox replay that re-dispatches a vault's recorded
lifecycle events to a chosen subscriber without re-emitting to everyone.

🎯 Requirements and Context

• Add POST /api/admin/vaults/:id/replay-events taking an optional subscriber id.
• Must read from the persisted outbox (source of truth), not reconstruct events.
• Must preserve original event ordering and idempotency keys so a subscriber that
  already saw an event de-dupes it.
• Admin-only, audit-logged, and rate-limited.

🛠️ Suggested Execution

1. Fork the repo and create a branch

git checkout -b feature/vault-outbox-replay

2. Implement changes

• Add a replayForVault(vaultId, subscriberId?) to src/services/outboxRelay.ts.
• Add the route to src/routes/adminWebhooks.ts.
• Add src/tests/outboxRelay.vaultReplay.test.ts.
• Document in docs/webhooks.md.

3. Test and commit

• Run: npm test -- src/tests/outboxRelay.vaultReplay.test.ts
• Cover edge cases: vault with no events, ordering preserved, idempotency-key
  reuse, single-subscriber targeting, non-admin forbidden.

Example commit message

feat: per-vault outbox event replay endpoint

✅ Guidelines

• Minimum 95% test coverage on new/changed lines.
• Replays from persisted outbox only; preserves ordering and idempotency keys.
• Timeframe: 96 hours.

🏷️ Labels

type-feature · type-enhancement · area-backend · MAYBE REWARDED · GRANTFOX OSS · OFFICIAL CAMPAIGN

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[AugistineCreates]

@AugistineCreates has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Please assign this issue to me my eta is 4 hours

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Congratulations, @AugistineCreates! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 30, 2026.

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[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox as part of the Official Campaign campaign!

@AugistineCreates's PR #936 was approved and merged by @1nonlypiece.

🏆 @AugistineCreates: You earned 40 FoxPoints for this contribution! Your current tier: Builder (2,321 total points). Track your full progress on GrantFox.

👏 Great work, @AugistineCreates! Keep contributing to Disciplr-Org.

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This issue has been completed by @AugistineCreates as part of the Stellar Wave Program's 6th Wave 🥳

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