<!-- task=m-node-provider-execution-liveness-recovery/07+06_reception_fence plan=5 tag=REVIEW_REFACTOR milestone-task=failure-handoff -->

# Complete - m-node-provider-execution-liveness-recovery/07+06_reception_fence

## Completed At

2026-08-05

## Summary

Completed the authoritative reception-owner fence after three reception-fence packets, one required rework, and a final PASS.

## Loop History

| Plan | Review | Verdict | Notes |
|------|--------|---------|-------|
| `plan_local_G08_3.log` | `code_review_cloud_G08_3.log` | Not reviewed | Refined the larger health-overlay packet into this independent reception-fence producer. |
| `plan_local_G08_4.log` | `code_review_cloud_G08_4.log` | FAIL | Required R1 found ambiguous authority when one client registered multiple node ids. |
| `plan_local_G07_5.log` | `code_review_cloud_G07_5.log` | PASS | Enforced singular client ownership and defensive fail-closed lookup. |

## Implementation / Cleanup

- Reject a non-nil `TcpClient` that is already registered under another node id while holding the registry lock.
- Return no reception authority when client ownership is nil, absent, stale, or ambiguous, cloning only an exactly singular current owner.
- Preserve the first owner and generation on rejected rebinding, document the one-connection/one-node registration invariant, and add deterministic regression coverage.

## Final Verification

- `go test -count=1 -v ./apps/edge/internal/node -run '^(TestRegistryRegisterIfAbsentRejectsClientRebinding|TestCurrentOwnerForClientFailsClosedForAmbiguousClient|TestCurrentOwnerForClient)$'` - PASS; all three named fixtures executed.
- `go test -count=1 ./apps/edge/internal/node ./apps/edge/internal/transport ./apps/edge/internal/bootstrap` - PASS.
- `go test -race -count=3 ./apps/edge/internal/node ./apps/edge/internal/transport ./apps/edge/internal/bootstrap` - PASS on the exact isolated reviewer rerun; an earlier parallel reviewer invocation hit a transient unrelated bootstrap request timeout.
- `go vet ./apps/edge/internal/node ./apps/edge/internal/transport ./apps/edge/internal/bootstrap` - PASS with no diagnostics.
- `./scripts/e2e-smoke.sh` - PASS; provider-only Node and Edge/transport package smoke completed.
- `IOP_DEV_RECONNECT_BIND_TIMEOUT=45 ./scripts/dev/edge-node-reconnect-diagnostic.sh` - PASS; three runs, command responses, disconnect, reconnect, and post-reconnect dispatch were verified.
- `git diff --check` - PASS with no whitespace errors.

## Remaining Nits

- None.

## Follow-up Work

- Runtime health overlay, recovery transitions, and release-once consumption remain in dependent sibling tasks for `milestone-task=failure-handoff`.
