Once `pformat_caller_frame()` renders successfully, the default `_mk_send_mte()` path still fails while formatting the valid IPC msg spec and then constructs its error message as a one-element tuple. Pass `MsgCodec` to `pformat_msgspec()`, keep the assembled message a string and exercise the complete path through a printable `MsgTypeError` regression. Prompt-IO: ai/prompt-io/opencode/20260820T150250Z_9afda1c6_prompt_io.md (this patch was generated in some part by `opencode` using `gpt-5.6-sol` (`openai`)) |
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