Run several read operations in one request

Dispatches up to 20 GET operations against the public read surface and returns their results in one envelope, so an agent acting on many items does not spend one request per item.

Reads only. Generation is deliberately not batchable: a partial failure in a batch of money-spending calls leaves credits nobody can account for, so each generation keeps its own request and its own Idempotency-Key.

Per-item status. An operation that fails carries its own status and error; the envelope is still 200. No API key is required for the paths it accepts.