# PROVENANCE — shadow_pass_pr132_l1l2_credential_passthrough

- PR #132 / task-2627 (L1+L2 enforcement) · **credential 3-tier doctrine 첫 적용**
- head 25ddbf4e / merge 94540f67 / merged 2026-05-22T09:47:42Z
- 특성: EXISTING_SYSTEM_IDENTIFIER passthrough (정상 라우팅 식별자 — fail 아님)
- credential_tier=EXISTING_SYSTEM_IDENTIFIER → credential_clean=True (PASS 영향 0)
- 기대 routing: WOULD_MERGE (auto_merge_candidate.v1)