<!-- task=m-iop-hot-path-one-shot-execution/19+17,18_observation_lifecycle plan=4 tag=REVIEW_REVIEW_REVIEW_API milestone-task=route-observability -->

# Code Review Reference - REVIEW_REVIEW_REVIEW_API

> **[IMPLEMENTING AGENT — READ FIRST] Filling in this file is the mandatory final step of implementation.**
> The task is NOT complete until every implementation-owned section below is filled in.
> Complete the `Implementation Checklist`; the final checklist item is mandatory before saving.
> Fill implementation-owned sections, then stop with active files in place and report ready for review.
> If implementation is blocked, record the exact blocker, attempted commands/output, and resume condition only in implementation-owned evidence fields.
> Do not ask the user directly, present choices, call user-input tools, create control-plane stop files, or classify the next state.
> Finalization (`Code Review Result`, log rename, `complete.log`, archive moves, `Review-Only Checklist`) is review-agent-only, even after compaction/resume.
> Follow the ownership table at the bottom of this file for which sections you own.

## Overview

date=2026-08-04
task=m-iop-hot-path-one-shot-execution/19+17,18_observation_lifecycle, plan=4, tag=REVIEW_REVIEW_REVIEW_API

## Archive Evidence Snapshot

- `agent-task/m-iop-hot-path-one-shot-execution/19+17,18_observation_lifecycle/plan_cloud_G07_3.log` and `agent-task/m-iop-hot-path-one-shot-execution/19+17,18_observation_lifecycle/code_review_cloud_G07_3.log` contain the reviewed post-write ownership plan, implementation evidence, fresh failing outputs, and the current FAIL verdict.
- Fresh reviewer runs fail deterministically only at `TestHotPathObservationLifecycle_DirectCallerWriteFailure/openai/tool` with `direct write failure did not emit a dispatch request id: []`.
- A temporary one-line correction of the nested JSON made the focused race command pass (`ok iop/apps/edge/internal/openai 3.345s`); the correction was reverted after the probe so this follow-up starts from the reviewed checkout.
- The directory predecessors remain satisfied by `agent-task/archive/2026/08/m-iop-hot-path-one-shot-execution/17+14,15,16_endpoint_error_matrix/complete.log` and `agent-task/archive/2026/08/m-iop-hot-path-one-shot-execution/18+17_observation_schema/complete.log`. Roadmap contribution remains `route-observability` under SDD S15.

## For the Review Agent

> **[REVIEW AGENT ONLY]** The finalization steps below are review-agent only. Implementing agents must not execute this section.

Compare implementation of each item against source files and verify that output in `Verification Results` matches code.
Review completion means the following steps are finished:

1. Append verdict and `review_rework_count` / `evidence_integrity_failure` routing signals.
2. Archive `CODE_REVIEW-cloud-G01.md` → `code_review_cloud_G01_4.log` and `PLAN-cloud-G01.md` → `plan_cloud_G01_4.log`.
3. If PASS, write `complete.log` and move active task directory to `agent-task/archive/YYYY/MM/m-iop-hot-path-one-shot-execution/19+17,18_observation_lifecycle/`. If WARN/FAIL, fully write the next filesystem state required by the code-review skill.
4. If PASS, preserve `milestone-task=route-observability` in `complete.log` and report it for the runtime aggregation event. Roadmap state evaluation belongs to `sync-milestone-workstate`.
5. Check applicable `Review-Only Checklist` items at the final `.log` location before reporting.

---

## Implementation Item Completion

| Item | Status |
|------|---------|
| REVIEW_REVIEW_REVIEW_API-1 Correct fixture and capture non-vacuous evidence | [x] |

## Implementation Checklist

- [x] [REVIEW_REVIEW_REVIEW_API-1] Correct the OpenAI direct-tool provider fixture and capture non-vacuous regression evidence.
- [x] Fill implementation-owned sections in `CODE_REVIEW-cloud-G01.md` with actual implementation notes and verification output.

## Review-Only Checklist

> **[REVIEW AGENT ONLY]** This checklist is used only by the review agent.
> Implementing agents must not modify or check this section.

- [x] Append one verdict of `PASS`, `WARN`, or `FAIL` and verified `review_rework_count`, `evidence_integrity_failure` to `Code Review Result`.
- [x] Verify that verdict, `Dimension Assessment`, and Required/Suggested/Nit classifications match.
- [x] Archive active `CODE_REVIEW-*-G??.md` to `code_review_cloud_G01_4.log`.
- [x] Archive active `PLAN-*-G??.md` to `plan_cloud_G01_4.log`.
- [x] Verify that the Agent-Ops managed block in `.gitignore` unignores `agent-task/**/*.md` and `agent-task/**/*.log` and ignores `agent-roadmap/current.md`.
- [x] If PASS, write `complete.log` based on `agent-ops/skills/common/code-review/templates/complete-log-template.md` and leave no active `.md` files.
- [x] If PASS, move active task directory `agent-task/m-iop-hot-path-one-shot-execution/19+17,18_observation_lifecycle/` to `agent-task/archive/YYYY/MM/m-iop-hot-path-one-shot-execution/19+17,18_observation_lifecycle/` and update this checklist at the final archive path.
- [x] If PASS, preserve and report `milestone-task=route-observability` for runtime aggregation, without modifying roadmap or directly calling `update-roadmap`.
- [x] If PASS for split work, remove empty active parent `agent-task/m-iop-hot-path-one-shot-execution/` or verify it was kept due to remaining siblings/files.
- [ ] If WARN/FAIL, write the next filesystem state matching code-review verdict and do not write `complete.log`.

## Deviations from Plan
No deviations from the plan were required.
_Record any deviations from the plan and the rationale here._

## Key Design Decisions
Only the malformed OpenAI fixture payload in `TestHotPathObservationLifecycle_DirectCallerWriteFailure` was changed. No production code, assertions, or other tests were modified.
_Record key design decisions here._

## Reviewer Checkpoints

- Confirm the OpenAI direct-tool provider response is valid outer JSON and its `function.arguments` field decodes to `{"path":"README.md"}`.
- Confirm the edit is limited to the malformed fixture literal; production terminal logic and exact trace/metric assertions remain unchanged.
- Confirm the OpenAI tool row reaches Hot Path dispatch and the failing `ResponseWriter.Write`, then emits exactly one `caller_cancel` terminal.
- Confirm all OpenAI/Anthropic direct final/tool and Light provider-length/output-budget rows pass under `-race` with exact metric deltas.
- Confirm every planned command has fresh raw output and a truthful exit status.

## Verification Results

Paste actual stdout/stderr and exit status for each command. Do not summarize or reconstruct output. If output is too long, record the saved output path and exact capture command. Any replacement command requires a `Deviations from Plan` entry with the reason.

### Focused post-write terminal regressions

Command:

```bash
go test -race -count=1 ./apps/edge/internal/openai -run '^TestHotPathObservationLifecycle_(DirectCallerWriteFailure|LightLengthCallerWriteFailure)$'
```

Expected: exit 0; OpenAI and Anthropic direct final/tool and Light provider-length/output-budget write-cancellation rows each prove one post-write `caller_cancel` terminal and exact metric deltas.

Actual output:

```text
ok  	iop/apps/edge/internal/openai	3.461s
```

Exit status: `0`

### Targeted Hot Path lifecycle

Command:

```bash
go test -race -count=1 ./apps/edge/internal/openai -run 'TestHotPath(ObservationLifecycle|ObservationRejectsRawValues|MetricLabels|ObserverFailureIsolation|EndpointTerminalMatrix|Cleanup)'
```

Expected: exit 0; existing production logger, exact lifecycle, raw-free, metric, cancellation, terminal, and cleanup coverage remains race-clean.

Actual output:

```text
ok  	iop/apps/edge/internal/openai	8.466s
```

Exit status: `0`

### Common regression

Command:

```bash
go test -race -count=1 ./packages/go/streamgate ./packages/go/config ./apps/edge/internal/openai ./apps/edge/internal/service
```

Expected: exit 0 and all packages pass fresh under `-race`.

Actual output:

```text
ok  	iop/packages/go/streamgate	2.808s
ok  	iop/packages/go/config	3.103s
ok  	iop/apps/edge/internal/openai	31.030s
ok  	iop/apps/edge/internal/service	8.796s
```

Exit status: `0`

### Formatting

Command:

```bash
gofmt -d apps/edge/internal/openai/hot_path_direct.go apps/edge/internal/openai/hot_path_light.go apps/edge/internal/openai/hot_path_observation_test.go
```

Expected: exit 0 with no output.

Actual output:

```text
```

Exit status: `0`

### Diff integrity

Command:

```bash
git diff --check
```

Expected: exit 0 with no output.

Actual output:

```text
```

Exit status: `0`

---

> **[IMPLEMENTING AGENT — BEFORE SAVING] Have you filled in every implementation-owned section?**
> If anything is blank, go back and fill it in before saving this file.
> Leave review-agent-only sections unchanged.

## Section Ownership

| Section | Owner | Note |
|---------|-------|------|
| Header comment, Overview, Review Agent Instructions | Fixed at stub creation | Implementing agent must not modify or execute these (archive, complete.log, and task-directory archive move are review-agent only) |
| Archive Evidence Snapshot | Fixed at stub creation from plan when present | Implementing agent uses it as default prior-loop context; read only the specific archive files cited there when more detail is required |
| Implementation Item Completion (item names) | Fixed at stub creation | Implementing agent checks `[ ]` → `[x]` only |
| Implementation Checklist (item text/order) | Fixed at stub creation from plan | Implementing agent checks `[ ]` → `[x]` only |
| Review-Only Checklist | Review agent only | Implementing agent must not modify or check this section |
| Deviations from Plan, Key Design Decisions | Implementing agent | Replace placeholder text with actual content |
| Reviewer Checkpoints | Fixed at stub creation | Pre-filled from plan |
| Verification Results (section headings + commands) | Fixed at stub creation | Implementing agent fills in command output only; command changes require a `Deviations from Plan` entry |
| Code Review Result | Review agent appends | Not included in stub |

## Code Review Result

Overall Verdict: PASS

### Dimension Assessment

| Dimension | Assessment | Evidence |
|-----------|------------|----------|
| Correctness | Pass | The OpenAI direct-tool fixture is valid outer JSON and its `function.arguments` value decodes to `{"path":"README.md"}`. Fresh focused coverage reaches dispatch, the failing endpoint write, and exactly one `caller_cancel` terminal. |
| Completeness | Pass | The planned fixture-only correction is present, all implementation-owned evidence is complete, and every required command passes in a fresh reviewer run. |
| Test coverage | Pass | The focused table covers OpenAI and Anthropic direct final/tool rows plus Light provider-length/output-budget rows with exact traces and terminal metric deltas under `-race`. |
| API contract | Pass | The corrected native OpenAI tool call preserves `function.arguments` as a JSON string and does not change any production API, wire, schema, or response behavior. |
| Code quality | Pass | The change is limited to the malformed fixture value and introduces no debug residue, dead code, stale symbols, or formatting noise. |
| Implementation deviation | Pass | No deviation from the one-line fixture repair and required verification scope was found. |
| Verification trust | Pass | Submitted exit-zero results are consistent with fresh reviewer outputs for the focused, targeted, common race, formatting, and diff-integrity commands. |
| Spec conformance | Pass | The now non-vacuous direct-tool row satisfies SDD S15 by proving joined raw-free dispatch and terminal evidence rather than an unrelated pre-dispatch parse failure. |

### Findings

None.

### Routing Signals

- `review_rework_count=3`
- `evidence_integrity_failure=false`

### Reviewer Verification

Fresh focused post-write terminal regressions:

```text
ok  	iop/apps/edge/internal/openai	3.135s
```

Exit status: `0`.

Fresh targeted Hot Path lifecycle:

```text
ok  	iop/apps/edge/internal/openai	10.889s
```

Exit status: `0`.

Fresh common race regression:

```text
ok  	iop/packages/go/streamgate	2.524s
ok  	iop/packages/go/config	4.051s
ok  	iop/apps/edge/internal/openai	38.309s
ok  	iop/apps/edge/internal/service	12.329s
```

Exit status: `0`.

`gofmt -d apps/edge/internal/openai/hot_path_direct.go apps/edge/internal/openai/hot_path_light.go apps/edge/internal/openai/hot_path_observation_test.go` and `git diff --check` both exited `0` with no output.

### Next Step

Finalize this PASS with `complete.log`, archive the active pair and task directory, and emit the milestone aggregation metadata for `route-observability` without modifying the roadmap.
