docs: reconcile canonical memory with merged Go backend

.project-docs/90-maintenance/stale-items.md

@@ -9,7 +9,9 @@ This is the integrated registry of stale or conflicting canonical memory. Update
 
 ## Missing Context
 
-- {missing information that affects future planning}
+- RDS deployment inputs (target version, connection budget, endpoint, TLS/CA bundle, database roles, ACK network policy) — needed before production validation.
+- Go Cookie compatibility decision (no-logout parsing versus forced re-login) and the public `/api/v1` support promise — needed before freezing cutover contracts.
+- Real OSS bucket/credential configuration — needed before horizontal scaling or Go asset validation.
 
 ## Feature Task Routing