ADR-021: third review round — tx-read methods, Job.claimed_at, schedule() queue validation, drop=rollback, receiver arms

docs/architecture/open-questions.md

@@ -1,6 +1,6 @@
 ---
 status: draft
-last_updated: 2026-10-06 (OQ-11 resolved — Phase 1 question set closed)
+last_updated: 2026-10-07 (third review round — findings resolved as ADR-021; question set remains closed)
 ---
 
 # alkstore — Open Questions
@@ -53,7 +53,16 @@ window ends at first release) and
 (`delay`/`run_at` precedence, relative `expires`, scheduler-fired
 jobs' stamp source, the serde_json payload encoding bridge), plus
 mechanical fixes (ADR index staleness in overview/engine-postgres,
-stale wording, framing drift).
+stale wording, framing drift). **Third review round (2026-10-07,
+pre-decomposition):** likewise found no *new* open questions — five
+findings (a factually-incorrect ADR-019 §1 claim about tx-side reads,
+an ADR-010/ADR-019 `Job`-struct disagreement, an unvalidated
+`schedule()` write path into reserved names, the unpinned tx-handle
+drop disposition, unpinned `EventReceiver` error/close arms), all
+decidable from decided material, resolved directly as
+[ADR-021](decisions/021-tx-reads-and-value-shape-fixes.md) (tx-read
+methods on `TxHandle`, `claimed_at` restored, schedule queue-argument
+validation, drop = rollback, receiver arms pinned).
 
 Resolved questions stay listed with their resolution; they are not
 deleted.