randomayzer/agents/antigravity/done/TASK-2026-08-18-giveaway-detail-capabilities.md

Task Done: Phase 2.3.1.1 — Giveaway Detail Capability Truthfulness

Status: DONE Assigned to: Antigravity (@orchestrator) Date: 2026-08-18 Base Commit: 4e4370d

Summary of Changes

• Implemented getCredentialStatus(userId: string) in TokenRefresher with exact states:
  • AVAILABLE: valid, non-expired USER access token present.
  • REFRESHABLE: expired or unknown expiry, but refresh token is present.
  • REAUTH_REQUIRED: expired or unknown expiry, without refresh token.
  • MISSING: no credentials stored for user.
• Updated GET /api/giveaways/[id] to query defaultTokenRefresher.getCredentialStatus(sessionUser.id) without performing network calls or leaking tokens into response.
• resolveEffectiveCapabilities assigns accessMode: 'ORGANIZER_USER' only when status is AVAILABLE or REFRESHABLE. For MISSING or REAUTH_REQUIRED, it strictly defaults to PUBLIC_SERVICE.
• Expanded tests/effective-capabilities-truthfulness.test.ts to 11 tests covering all credential states, expiration boundaries, refresh token presence, and token secrecy.
• All 273 tests passing across 47 test files (100% green).