<!-- task=m-node-provider-execution-liveness-recovery/03+02_health_probe_contract plan=3 tag=REVIEW_API milestone-task=health-classification -->

# Complete - m-node-provider-execution-liveness-recovery/03+02_health_probe_contract

## Completion Date

2026-08-04

## Summary

Completed the independent health-probe ceiling follow-up after four plan generations, one failed official review, and a final PASS.

## Loop History

| Plan | Review | Verdict | Notes |
|------|--------|---------|-------|
| `plan_cloud_G08_0.log` | `code_review_cloud_G08_0.log` | N/A | Initial health-classification pair was superseded before an official verdict. |
| `plan_cloud_G08_1.log` | `code_review_cloud_G08_1.log` | N/A | Revised health-classification pair was superseded before an official verdict. |
| `plan_local_G07_2.log` | `code_review_cloud_G07_2.log` | FAIL | Identified that a non-returning prober could hold the coordinator past its independent deadline. |
| `plan_cloud_G05_3.log` | `code_review_cloud_G05_3.log` | PASS | Bounded coordinator return with a buffered result/deadline selection and deterministic blocked-hook evidence. |

## Implementation and Cleanup

- Moved provider hook execution behind an unexported context-taking coordinator that selects a buffered result against the independent probe context.
- Preserved the exact-target identity/status population, post-result deadline recheck, stable fail-closed normalization, and public `ProbeHealth` signature.
- Added a channel-controlled regression that cancels the probe context while the hook remains blocked, observes `health_unknown` / `probe timed out`, and releases the hook afterward.

## Final Verification

- `go version && go env GOMOD` - PASS; Go 1.26.2 on linux/arm64 and `/config/workspace/iop-s1/go.mod` were reported.
- `go test -count=20 ./apps/node/internal/node -run '^TestProbeHealth(ReturnsWhenBlockedHookOutlivesContext|RechecksDeadlineWhenProbeIgnoresContext|ReceivesIndependentBoundedContext|RootsFromBackground)$'` - PASS; all 20 focused iterations completed.
- `go test -count=1 ./packages/go/execution ./apps/node/...` - PASS; shared execution and all Node packages completed.
- `go test -race -count=3 ./packages/go/execution ./apps/node/internal/node` - PASS; no race report.
- `go vet ./packages/go/execution ./apps/node/internal/node` - PASS; no diagnostics.
- `go test -count=1 ./...` - PASS; the complete Go repository suite completed.
- `./scripts/e2e-smoke.sh` - PASS; provider-only Node and Edge dispatch/tunnel/queue/reconnect smoke completed.
- `IOP_DEV_RECONNECT_BIND_TIMEOUT=60 IOP_NODE_WAIT_TIMEOUT=60 TMPDIR=/config/tmp IOP_NODE_BIN=/config/tmp/iop-node ./scripts/dev/edge-node-reconnect-diagnostic.sh` - PASS; registration, ordered payloads, terminal ordering, command responses, and reconnect completed. The exact planned command's 30-second inherited Node preflight timed out before this host's Edge startup, as recorded in the archived review.
- `make readability-audit` - EXPECTED OUT-OF-SCOPE RATCHET FAIL; the reported increases did not name `health_probe.go`, `health_probe_test.go`, or this task slice.
- `test -z "$(gofmt -l apps/node/internal/node/health_probe.go apps/node/internal/node/health_probe_test.go)" && git diff --check -- apps/node/internal/node/health_probe.go apps/node/internal/node/health_probe_test.go agent-task/m-node-provider-execution-liveness-recovery/03+02_health_probe_contract/CODE_REVIEW-cloud-G05.md` - PASS; no formatting or whitespace diagnostics before archive.

## Remaining Nits

- None.

## Follow-up Work

- None.
