Slims the salvaged preview helper (drop the try/except around json.dumps —
default=str cannot raise on tool results) and documents the tool.completed
SSE shape. Adds the control test that the multimodal envelope dict is still
classified as a success, so the dict passthrough only widens the failure
detection to real structured results.
The idea of carrying the tool result on tool.completed for /v1/runs
consumers was first proposed in #22362; that PR's executor half
(result=function_result) is already on main, and its wire half is landed
here in redacted, bounded form instead of the raw payload.
Salvages #111821 (@KoNit-K), part of #111815.
Co-authored-by: kidrauhl123 <105764349+kidrauhl123@users.noreply.github.com>
teknium1
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