Feature request: authenticated cross-engine permanent-session delivery and receipts

Request

Is there an existing supported integration for authenticated, bidirectional delivery between registered permanent Codex and Claude workbench sessions?

If not, please consider a documented desktop/agent integration that provides:

1. Resolve a registered permanent session by engine and stable identity.
2. Send a compact assignment to one exact recipient using an idempotency key.
3. Reconcile an assignment by that key and return the provider attempt/message identity.
4. Read one bound recipient event/turn receipt so the sender can distinguish delivery, acceptance, and execution.
5. Document per-call and end-to-end timeout/cancellation behavior.
6. Enforce sender/recipient/lane authorization so capability does not become arbitrary messaging.

Why this matters

Today, the exposed Codex thread tools can message Codex tasks, but we do not see an equivalent supported Claude session resolver, sender, or receipt-readback interface. The Claude CLI resume flow is not an acceptable substitute because it can copy a running session and does not provide authenticated recipient or execution evidence.

We need to know whether a supported integration already exists before building anything. This request contains no customer data, credentials, local paths, transcripts, or internal session identifiers.

The payload names no files or tests. Start by reviewing the exposed Codex thread tools and the Claude CLI resume flow described in the request. Compare them with the requested resolver, delivery, reconciliation, receipt, timeout, cancellation, and authorization behavior; done means establishing whether a supported integration exists or documenting the required integration scope.