fix(reliability): Address 12 review issues across circuit breaker, DLQ, config merge, and CLI#3
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… review - Add summary table to Nine 3 (matching Nine 1/2/2.5 format) - Add detailed explanations for all Nine 1/2/2.5 features - Extract all human review gates to dedicated HUMAN_REVIEW.md - Restructure roadmap into table + explanations https://claude.ai/code/session_012PTx7bZNNh74rAshCcuSQg
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[WIP] Add four-nines reliability framework with circuit breakers, DLQ, and monitoring
fix(reliability): Address 12 review issues across circuit breaker, DLQ, config merge, and CLI
Mar 11, 2026
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Addresses all items flagged in the PR review of the four-nines reliability module.
Circuit Breaker
half_openstate now enforces a single in-flight probe viaprobeInFlight: booleanonCircuitState— subsequentcanExecute()calls returnfalseuntil the probe resolves or failsDLQ / Recovery
SystemMessageWriter.write()now spreadsextraFrontmatterinto the SQLite queuepayload, sosession-idandresume-meshare readable atnextMsg.payloadwhere the dispatcher expects themdeadLetter()now accepts and forwardsretryCount/maxRetriesfrommachine.currentContextso retry-exhausted entries are correctly classified asmanual(not auto-recoverable)recoverAll()is now gated behindWORKER_AUTO_RECOVER_DLQ=trueenv var; previously ran unconditionally on every dispatcher startConfig & Safe Mode
mergeSectionhelper — partial nested overrides (e.g. onlycircuitBreaker.cooldownMs) no longer silently drop sibling keysevaluateSLI()now uses per-mesh rate (snapshot.byMesh[meshName]?.rate) instead of the global rate to prevent a noisy mesh from escalating safe mode in unrelated mesheslastChange?.reason?.startsWith('auto:') ?? falseinSafeMode.getState()— was crashing when no level change had occurred yetCLI / Docs
tx mesh healthnow shows a warning whentotalEvents === 0rather than reporting a misleading 100% success rate; persisted circuit breaker and DLQ data still renderedparseFlags()uses an indexed loop for--rewind-toso the value arg is consumed correctly and duplicate flags can't cause mis-readsbucketMsfromSLIConfig💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.