fuzz: cover deferred writing in chanmon_consistency#4465

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joostjager wants to merge 7 commits intolightningdevkit:mainfrom

joostjager:chain-mon-internal-deferred-writes-with-fuzz

Commits on Mar 6, 2026

Clarify that each pending monitor update ID must be marked complete

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claude
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Extract shared dummy_monitor helper in channelmonitor.rs
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Extract watch_channel_internal/update_channel_internal from Watch impl

joostjager
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claude
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Add deferred bool to ChainMonitor

joostjager
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claude
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Implement deferred monitor write queueing and flushing

joostjager
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claude
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f: flush in future
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Add deferred monitor write support to chanmon_consistency fuzz target

joostjager
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claude
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