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Updates: - VS-02-SLICE_SPEC.md: Status DRAFT → COMPLETE (all unknowns resolved) - NEW: VS-02_DATA_GOVERNANCE_POLICY.md (1.0 complete governance framework) Unknowns Resolved (by AEG-X-009): ✅ Data source: KRX OpenAPI endpoints confirmed (source-catalog.md v2.0) ✅ Import SLA: Daily T+0, <4 hours, 99.5% availability ✅ Audit policy: Append-only revisions, Outbox/Inbox notifications ✅ Error handling: Transient retry (exponential backoff), permanent quarantine, fallback (LKG cache) Governance Framework: • Daily import procedure (16:30-19:00 KST) • Fallback procedure (API down → use LKG cache, max 1 day old) • Data quality rules (schema completeness, business logic validation) • Audit & correction handling (immutable revisions, PIT tracking) • Compliance requirements (5-year retention, FSS audit trail) • Risk mitigation (cascade failures, correction propagation, duplicate detection) Enables: → VS-02 implementation ready (all governance unknowns cleared) → F: VS-03/04 design can reference finalized governance → Phase 2: No data governance blockers AGENTS.md v16.0: 13/13 criteria ✅ Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>