<!-- task=m-iop-owned-single-request-agent-execution/02+01_preset_binding plan=4 tag=REVIEW_REVIEW_API milestone-task=preset-binding -->

# Code Review Reference - 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.
> Execute the plan's selected root cause, scope, files, and dependency decisions as written. Do not choose another owner, narrow/expand the write boundary, or replace a fix with another verification attempt.
> 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=2026-08-06
task=m-iop-owned-single-request-agent-execution/02+01_preset_binding, plan=4, tag=REVIEW_REVIEW_API

## Archive Evidence Snapshot

- Superseded pair: `plan_cloud_G07_3.log`, `code_review_cloud_G07_3.log`.
- Archived verdict: FAIL with Required R2 and no Suggested or Nit findings. R2 covers extra route keys admitted by the fixed-light validator and duplicate stage-role orderings misclassified as generic inconsistency.
- Every planned dependency, formatting, focused, package, race, vet, full Edge, and diff-hygiene command passed freshly. Focused reviewer reproducers still proved that a valid light route plus an extra route compiles and that `work,work,review` / `plan,review,review` do not return the typed duplicate error.
- Split predecessor 01 remains satisfied by `agent-task/archive/2026/08/m-iop-owned-single-request-agent-execution/01_preset_config/complete.log`.

## 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-G05.md` → `code_review_cloud_G05_4.log` and `PLAN-cloud-G05.md` → `plan_cloud_G05_4.log`.
3. If PASS, write `complete.log` and move active task directory to `agent-task/archive/YYYY/MM/m-iop-owned-single-request-agent-execution/02+01_preset_binding/`. If WARN/FAIL, fully write the next filesystem state required by the code-review skill.
4. If PASS, preserve `milestone-task=preset-binding` in `complete.log` and report it for runtime aggregation. 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_API-1 Close the exact fixed-light shape boundary | [x] |

## Implementation Checklist

- [x] Reject every extra route key and classify every duplicate fixed-stage role with `errSingleRequestBindingDuplicate` before positional validation.
- [x] Add focused typed-error and managed resolver/model-list regression cases for the extra-route and duplicate-role variants.
- [x] Run the dependency, formatting, focused, package, race, vet, full Edge regression, and diff-hygiene verification commands exactly as written.
- [x] Fill implementation-owned sections in CODE_REVIEW-*-G??.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_G05_4.log`.
- [x] Archive active `PLAN-*-G??.md` to `plan_cloud_G05_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-owned-single-request-agent-execution/02+01_preset_binding/` to `agent-task/archive/YYYY/MM/m-iop-owned-single-request-agent-execution/02+01_preset_binding/` and update this checklist at the final archive path.
- [x] If PASS, preserve and report `milestone-task=preset-binding` 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-owned-single-request-agent-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

None.

## Key Design Decisions

Enforced exact single light route cardinality (`len(preset.Routes) == 1`) in `validateFixedSingleRequestShape`. Pre-scanned all stages in the route for duplicate stage roles before performing positional stage/role/model/options matching so that any duplicate stage role consistently returns `errSingleRequestBindingDuplicate` regardless of its relative position.

## Reviewer Checkpoints

- The unique packet 01 predecessor evidence still satisfies the split dependency.
- A marked preset with any route key beyond `light` fails before a binding can be returned or advertised.
- Duplicate plan, work, or review roles return `errSingleRequestBindingDuplicate` regardless of the first positional mismatch.
- Managed model discovery and resolution reject the residual invalid shapes without fallback.
- Valid fixed-light admission, option preservation, unmarked legacy behavior, and nested-copy isolation remain unchanged.

## Verification Results

Paste actual stdout/stderr under every command. If a command changes, record the replacement and reason under `Deviations from Plan`.

### Dependency

Command: `test -f agent-task/m-iop-owned-single-request-agent-execution/01_preset_config/complete.log || test "$(compgen -G 'agent-task/archive/*/*/m-iop-owned-single-request-agent-execution/01_preset_config/complete.log' | wc -l)" -eq 1`

Exit status: 0 (no output)

### Formatting

Command: `test -z "$(gofmt -l apps/edge/internal/openai/single_request_preset_binding.go apps/edge/internal/openai/single_request_preset_binding_test.go apps/edge/internal/openai/principal_routes_test.go)"`

Exit status: 0 (no output)

### Focused Fixed-Shape Regression

Command: `go test ./apps/edge/internal/openai -run 'Test(SingleRequestPresetBindingRejectsInvalidDefenseInDepth|ManagedSingleRequestPresetFailsClosed)' -count=1`

```
ok  	iop/apps/edge/internal/openai	0.061s
```

### Package Regression

Command: `go test ./apps/edge/internal/service ./apps/edge/internal/openai -count=1`

```
ok  	iop/apps/edge/internal/service	0.016s
ok  	iop/apps/edge/internal/openai	0.061s
```

### Race Regression

Command: `go test -race -count=1 ./apps/edge/internal/openai ./apps/edge/internal/service`

```
ok  	iop/apps/edge/internal/openai	0.751s
ok  	iop/apps/edge/internal/service	0.187s
```

### Edge Vet

Command: `go vet ./apps/edge/...`

Exit status: 0 (no diagnostics output)

### Full Edge Regression

Command: `go test ./apps/edge/... -count=1`

```
?   	iop/apps/edge/cmd/edge	[no test files]
ok  	iop/apps/edge/internal/authprojection	0.039s
ok  	iop/apps/edge/internal/bootstrap	0.443s
ok  	iop/apps/edge/internal/configrefresh	0.101s
ok  	iop/apps/edge/internal/controlplane	6.618s
ok  	iop/apps/edge/internal/edgecmd	0.093s
ok  	iop/apps/edge/internal/edgevalidate	0.060s
ok  	iop/apps/edge/internal/events	0.041s
ok  	iop/apps/edge/internal/input	0.095s
ok  	iop/apps/edge/internal/input/a2a	0.069s
ok  	iop/apps/edge/internal/node	0.069s
ok  	iop/apps/edge/internal/openai	8.036s
ok  	iop/apps/edge/internal/opsconsole	0.070s
ok  	iop/apps/edge/internal/service	5.948s
ok  	iop/apps/edge/internal/transport	4.786s
```

### Diff Hygiene

Command: `git diff --check`

Exit status: 0 (no whitespace errors output)

---

> **[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 fixed-shape admission rejects every extra route key and scans all stage roles for duplicates before positional role/model/options validation. |
| Completeness | Pass | REVIEW_REVIEW_API-1 is implemented in the validator and covered through both typed unit errors and managed production resolution/model discovery. |
| Test coverage | Pass | Focused tests cover duplicate plan/work/review orderings, valid-light-plus-extra-route rejection, and managed resolver/model-list fail-closed behavior. |
| API contract | Pass | Marked presets with inconsistent or duplicate fixed-light shapes fail closed without fallback, preserving the Anthropic virtual-preset admission contract. |
| Code quality | Pass | The change is localized, formatted, free of debug code, and preserves the existing typed error boundary. |
| Implementation deviation | Pass | The implementation matches the planned exact-route cardinality and duplicate-first validation sequence with no scope deviation. |
| Verification trust | Pass | Fresh reviewer runs passed the dependency, formatting, focused, package, race, vet, full Edge, and diff-hygiene checks. |
| Spec conformance | Pass | The result satisfies SDD S02 and the `preset-binding` Evidence Map requirement for immutable fixed-light fail-closed admission. |

### Findings

None.

### Routing Signals

- `review_rework_count=2`
- `evidence_integrity_failure=false`

### Next Step

- Archive the completed pair, write `complete.log`, and emit the `preset-binding` milestone completion metadata for runtime aggregation.
