diff --git a/docs/work-items/ORCH-105/15-staging-log.md b/docs/work-items/ORCH-105/15-staging-log.md
new file mode 100644
index 0000000..2612628
--- /dev/null
+++ b/docs/work-items/ORCH-105/15-staging-log.md
@@ -0,0 +1,43 @@
+---
+staging_status: SUCCESS
+work_item: ORCH-105
+stage: deploy-staging
+author_agent: deployer
+status: success
+created_at: 2026-06-12
+model_used: claude-opus-4-8
+timestamp: 2026-06-12T05:18:22Z
+base_url: http://localhost:8501
+---
+
+# Staging Gate Log
+
+Staging test suite completed against the live `orchestrator-staging` instance (port 8501),
+run canonically inside the container (`docker exec orchestrator-staging python3
+/repos/orchestrator/scripts/staging_check.py --base-url http://localhost:8501 --mode stub`).
+
+**Result: 8/10 checks PASS — exit code 0 → SUCCESS.**
+
+All REAL checks green; the two failures are known sandbox-infra checks (C9a/C9b), waived
+under ORCH-061 (`staging_infra_tolerance_enabled=True`). They depend on SANDBOX bot accounts
+being project members, not on the pipeline.
+
+INFRA-WAIVED: C9a Branch appears in orchestrator-sandbox, C9b Analyst job enqueued in staging queue (known sandbox-infra; real checks green)
+VERDICT: SUCCESS (exit 0) — SUCCESS (infra-waived): ['C9a Branch appears in orchestrator-sandbox', 'C9b Analyst job enqueued in staging queue'] are known sandbox-infra checks; all real checks green
+
+## Check breakdown
+
+| Block | Check | Result |
+|-------|-------|--------|
+| A SMOKE  | A1 GET /health → 200 status=ok | ✓ PASS |
+| A SMOKE  | A2 GET /queue → 200 with counts/max_concurrency/resilience | ✓ PASS |
+| A SMOKE  | A3 ORCH_STAGING=true (not prod) | ✓ PASS |
+| B ACCESS | B4 Plane: sandbox project accessible | ✓ PASS |
+| B ACCESS | B5 Gitea: orchestrator-sandbox accessible, push=true | ✓ PASS |
+| B ACCESS | B6 Registry: sandbox present, prod ET/ORCH absent | ✓ PASS |
+| C E2E    | C7 Create issue in Plane SANDBOX | ✓ PASS |
+| C E2E    | C8 Trigger pipeline via /webhook/plane | ✓ PASS |
+| C E2E    | C9a Branch appears in orchestrator-sandbox | ✗ FAIL (INFRA-WAIVED) |
+| C E2E    | C9b Analyst job enqueued in staging queue | ✗ FAIL (INFRA-WAIVED) |
+
+Staging gate passed → pipeline may advance to `deploy`.