feat: add signet-host-rpc crate with RpcHostNotifier#107

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prestwich merged 10 commits intodevelopfrom

Mar 20, 2026

Commits on Mar 19, 2026

feat: add signet-host-rpc crate with RpcHostNotifier

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refactor(host-rpc): rewrite notifier with hash-based chain walking

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Commits on Mar 20, 2026

chore(host-rpc): add metrics dependency

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feat(host-rpc): add centralized metrics module with OnceLock descriptions

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feat(host-rpc): instrument fetch methods and maybe_refresh_tags

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feat(host-rpc): instrument walk_chain with timing and exhaustion metrics

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feat(host-rpc): instrument handle_new_head with events and metrics

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feat(host-rpc): instrument drain_backfill with dynamic fields and metrics

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fix(host-rpc): record metrics on drain_backfill error paths

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fix(host-rpc): address review feedback

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