Staging suite ran end-to-end against staging (8501, stub mode): 9/10 PASS,
exit 1. Failure is B6 — staging project registry not isolated (sees prod
ET/ORCH, sandbox absent), violating the INFRA isolation invariant. Gate is
authoritative and red → staging_status: FAILED (rollback to development).
Note: this is a staging .env/ORCH_PROJECTS_JSON misconfig, not an ORCH-046
code regression (same B6 as ORCH-047).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>