M4 epic: production hardening + E2E + load testing#97

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jean-neiverth wants to merge 42 commits into

Commits on Jun 30, 2026

refactor(modules): consume shepherd-sdk helpers (BLEU-843)

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chore: rust-idiomatic compliance pass across M3 + M2 modules

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refactor(twap-monitor): port to Host trait + MockHost tests (BLEU-854)

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refactor(ethflow-watcher): port to Host trait + MockHost tests (BLEU-855)

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feat(sdk): mark HostErrorKind + LogLevel #[non_exhaustive] (COW-1029)

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test(resource-limits): 2 evil fixtures + 3 trap-isolation tests (COW-1036)

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feat(logging): JSON formatter + structured dispatch fields (COW-1035)

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feat(metrics): Prometheus /metrics endpoint + 4 recording sites (COW-1034)

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feat(supervisor): exponential-backoff restart with component reinstantiation (COW-1033)

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feat(event-loop): WS reconnect with exponential backoff per stream (COW-1071)

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feat(supervisor): poison-pill detection + quarantine (COW-1032)

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feat(event-loop+supervisor): graceful shutdown + last-block persistence (COW-1072)

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test(supervisor): multi-chain isolation regression tests (COW-1073)

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feat(ops): E2E testnet integration scaffold (COW-1064)

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docs(ops): production deployment guide (COW-1030)

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ops(e2e): pin module configs + run-prep punch list for 2026-06-18 COW-1064 dry run

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ops(e2e): automation scripts for COW-1064 run (.env-file pattern)

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fix(scripts): match JSON-shape supervisor-ready log line (COW-1064)

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fix(scripts): macOS bash 3.2 compatibility (COW-1064)

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fix(scripts): idempotent on-chain submission + python deps pre-flight (COW-1064)

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fix(scripts): EthFlow quote uses WETH not native-ETH sentinel (COW-1064)

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fix(scripts): report-gen handles flat JSON + per-module marker patterns (COW-1064)

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feat(sdk + twap-monitor): resolve non-empty app_data via orderbook lookup (COW-1074)

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fix(ethflow-watcher): apply resolve_app_data to submit_placement (COW-1074)

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ops(e2e): COW-1064 run report 2026-06-18

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fix(cow-api): forward orderbook ApiError envelope to HostError.data (COW-1075)

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feat(ethflow-watcher): downgrade ExcessiveValidTo drops to Info (COW-1076)

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fix(scripts): derive TWAP calldata with t0=now-60 (COW-1077)

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chore(sdk + twap-monitor): hex helpers via alloy_primitives::hex::encode

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feat(load-test): Anvil fork + mock orderbook + load-gen (COW-1079)

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ops(load): baseline 5x5 report - engine clean, load-gen needs calibration (COW-1079)

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fix(scripts): load-run.sh REPORTS_DIR set after lib.sh source (COW-1079)

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fix(load-gen): explicit nonce + unique EthFlow sellAmount (COW-1080)

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ops(load): medium + saturation reports - engine clean at 300 watches (COW-1079)

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feat(load-gen): --parallel mode + aggressive saturation report (COW-1079)

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chore(rust-idiomatic): M4 compliance pass (blockers + majors) (#66)

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fix(shepherd-sdk): add cow_api_request to chainlink StubHost + appData doc link

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refactor(sdk): replace [u8; 32] with B256 across resolve_app_data surface

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refactor(cow-orderbook): extract DEFAULT_CHAINS const

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chore(engine.e2e.toml): replace em-dash with ASCII hyphen

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fix(supervisor): align M4 commits with M3-rebase structural changes
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fix: restore deps and impls lost during M3→M4 rebase
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