QueuedInput

What a queued run does to its thread (design 4.55), in the JSON form the entry stores. The queue runs Agents and TypedAgent[I, O]s, the two entry points whose inputs have codecs; a raw CompiledGraph is not queued.

• Start: a new turn with input - an AgentInput for an Agent (QueuedInput.query), an I for a TypedAgent[I, O] (QueuedInput.typed).
• Resume: answers to the thread's pending interrupts, as Agent.resume takes them.
• Recover: continue the thread's failed or interrupted run, as Agent.recover does. A queued recover is the thread owner's explicit transfer of the thread's recovery to the queue: its first attempt recovers the thread whatever ran on it before (rule 4 otherwise forbids a worker from adopting a run started outside the queue).

The input is the caller's to store: the queue keeps it in its entry until the entry is reclaimed, but no metric, trace attribute or log line carries it (Stage 5 rule 10).