feat: adds more metrics#14

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stalniy merged 7 commits intomainfrom

feat/more-metrics

Mar 31, 2026

Commits on Mar 30, 2026

feat: add price staleness gauge to metrics
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feat: add error classification for price update failures

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feat: record price staleness and error_code on failures

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test: add staleness verification to failure test

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feat: add INSUFFICIENT_BALANCE_RETRY_DELAY_MS config

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feat: add insufficient balance cooldown with configurable retry delay

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refactor: moves price producer creation into hermes client from update command
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