Merge pull request 'docs(ORCH-069): staging gate log — SUCCESS (8/10, C9a/C9b infra-waived)' (#75) from docs/ORCH-069-staging-log into main

docs/work-items/ORCH-069/15-staging-log.md

@@ -0,0 +1,25 @@
+---
+staging_status: SUCCESS
+timestamp: 2026-06-08T11:20:02+00:00
+base_url: http://localhost:8501
+---
+
+# Staging Gate Log
+
+Staging test suite completed via `docker exec orchestrator-staging python3 /repos/orchestrator/scripts/staging_check.py --base-url http://localhost:8501 --mode stub` (run through the Docker Engine API since the `docker` CLI is not installed on the host; equivalent in-container execution per ORCH-048/ADR-001).
+
+**Result: 8/10 checks PASS — exit code 0 → SUCCESS.**
+
+All REAL (pipeline) checks are green. The two failing checks are the known SANDBOX_INFRA checks (C9a/C9b), waived per ORCH-061 because every REAL check passed.
+
+```
+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
+```
+
+## Block results
+- **[Block A] SMOKE** — A1 /health 200 ok ✓ · A2 /queue 200 with counts ✓ · A3 ORCH_STAGING=true ✓
+- **[Block B] ACCESS** — B4 Plane sandbox accessible ✓ · B5 Gitea orchestrator-sandbox push=true ✓ · B6 Registry isolation (sandbox present, prod ET/ORCH absent) ✓
+- **[Block C] E2E (stub)** — C7 Create issue in Plane SANDBOX ✓ · C8 Trigger pipeline via /webhook/plane ✓ · C9a Branch appears in orchestrator-sandbox ✗ (SANDBOX_INFRA, waived) · C9b Analyst job enqueued ✗ (SANDBOX_INFRA, waived)
+
+REAL failed: none. SANDBOX_INFRA failed: C9a, C9b (waived). tolerance: staging_infra_tolerance_enabled=True.