feat: implement outbound fiat transfer API

[GiftedGiftB]

closed #483

Pull Request

Summary

Fixed backend test failures and validation bugs across time-off, KYB, 2FA verify, and token refresh flows. Updated request validation and JWT service usage to match expected test behavior.

Type of Change

• Feature
• Bug Fix
• Refactoring
• Documentation
• Tests
• Infrastructure / CI

Linked Issues

Key Changes

• Relaxed employeeId validation in time-off.schema.ts so admin time-off submissions accept non-UUID identifiers.
• Normalized KYB missing-path errors in route.ts to use "Validation failed" for required document validation failures.
• Added missing await calls in route.ts for token generation.
• Updated token-refresh.service.ts to use the correct JWT verification and token issuance helpers.
• Verified targeted suites and type checking:
  • route.test.ts
  • route.test.ts
  • route.test.ts
  • token-refresh.service.spec.ts
  • pnpm exec tsc --noEmit --pretty false

Checklist

• I have performed a self-review of my code.
• I have commented my code, particularly in hard-to-understand areas.
• My changes generate no new linting/type-checking warnings.
• I have added tests that prove my fix is effective or that my feature works.
• I have updated the documentation accordingly.

Screenshots / Recordings

[vercel]

@GiftedGiftB is attempting to deploy a commit to the vestroll's projects Team on Vercel.

A member of the Team first needs to authorize it.

[codeZe-us]

@GiftedGiftB PR should point to dev branch not main branch