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feat: preserve publication outcome across doorbell failure - #2
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sanchuanhehe wants to merge 2 commits into
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sanchuanhehe wants to merge 2 commits into
sanchuanhehe wants to merge 2 commits into
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A doorbell operation can fail after a message has already been published. Expose a publish-then-notify helper that distinguishes notification failure from publication failure, so callers do not blindly resend a published frame.
The platform still owns notification resources, cache ordering, peer ACK/drain/recheck, and recovery of indeterminate publication; a successful or pending doorbell does not prove peer delivery. No ISR or async implementation is claimed.
Validation: 32 host tests including a synthetic SDK SPSC peer and indeterminate publication; host and RISC-V Clippy. Real firmware, QEMU doorbell integration, and silicon behavior remain unqualified.