Cancellation inside `send_all()` can publish a partial frame. Closing the actor-wide stream preserved framing but destroyed every context on the channel and replaced primary errors with `TransportClosed`. Deats, - shield complete frame publication, then deliver pending cancellation - keep the shared channel reusable after context-local cancellation - absorb transport closure while reporting an unshippable overrun - cover mid-frame cancellation and failed overrun error shipment This deliberately defers cancellation until the current frame write resolves; channel teardown remains the fallback for broken peers. Prompt-IO: ai/prompt-io/opencode/20260819T234824Z_557065d8_prompt_io.md (this patch was generated in some part by `opencode` using `gpt-5.6-sol` (`openai`)) |
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