[codex] Emit structured headless review results

[romgenie]

What changed

Adds headless contract v2 support on the coven-code side for issue OpenCoven#119.

• Bumps the vendored coven-github headless contract fixtures to version 2.
• Adds the required structured review object to result.json output.
• Derives review mode and reviewed file evidence from optional review_context supplied by the hosted GitHub adapter.
• Keeps non-review tasks explicit with mode: "none" and evidence_status: "not_applicable".

Why

Dogfooding showed we could prove the adapter checked out and supplied PR files, but the runtime result contract did not preserve that evidence in a machine-readable way. This gives future runs a deterministic evidence field instead of relying only on narrative comments.

Validation

• cargo test --manifest-path src-rust\Cargo.toml -p claurst headless
• cargo test --manifest-path src-rust\Cargo.toml

Stacked after PR #5 (codex/hosted-review-phase-5).

[romgenie]

@cody please review this PR again. Focus on whether the structured review-result contract actually proves which PR files were supplied and inspected, and call out any implementation issues.

[covencat]

Cody dogfood result

Status: success

Cody made 1 commit across 0 files.

Cody

Completed the requested change.

Files changed

No files changed.

Evidence

• PR: [codex] Emit structured headless review results #7
• Base: codex/hosted-review-phase-5 @ 8ee5d1390cd6d5b34bfed14a24a59331ca3dfac1
• Head: codex/headless-review-contract-v2 @ cd47f754ce3f2c9b0bb6aa584d7fd233fb99e511
• Checked-out workspace HEAD: cd47f754ce3f2c9b0bb6aa584d7fd233fb99e511
• Changed files supplied to agent: 6
• Review context SHA-256: dc64f7de02508b0854b2303fc3a010fc92abd1565c582ff3dbcf3092ba0f96b6
• Files: docs/headless-contract.md, src-rust/crates/cli/src/headless.rs, src-rust/crates/cli/tests/headless_contract/result.example.json, src-rust/crates/cli/tests/headless_contract/result.schema.json, src-rust/crates/cli/tests/headless_contract/session-brief.example.json, src-rust/crates/cli/tests/headless_contract/session-brief.schema.json

Files changed: 0
Commits: 1

Task 001c9150-78d7-11f1-9940-c3a301706313. Publication is enabled on the hosted test adapter only.

[romgenie]

@cody please review this PR one more time using the updated hosted runtime. Verify the structured review result includes mode, evidence_status, reviewed_files, findings/no_findings_reason, and limitations based on this PR's changed files.

[romgenie]

@cody please review this PR again after the adapter/runtime v2 sync. Confirm whether the emitted result now includes structured review evidence for this PR's changed files.

[covencat]

Cody dogfood result

Status: success

Cody made 1 commit across 0 files.

Cody

Completed the requested change.

Files changed

No files changed.

Evidence

• PR: [codex] Emit structured headless review results #7
• Base: codex/hosted-review-phase-5 @ 8ee5d1390cd6d5b34bfed14a24a59331ca3dfac1
• Head: codex/headless-review-contract-v2 @ cd47f754ce3f2c9b0bb6aa584d7fd233fb99e511
• Checked-out workspace HEAD: cd47f754ce3f2c9b0bb6aa584d7fd233fb99e511
• Changed files supplied to agent: 6
• Review context SHA-256: dc64f7de02508b0854b2303fc3a010fc92abd1565c582ff3dbcf3092ba0f96b6
• Files: docs/headless-contract.md, src-rust/crates/cli/src/headless.rs, src-rust/crates/cli/tests/headless_contract/result.example.json, src-rust/crates/cli/tests/headless_contract/result.schema.json, src-rust/crates/cli/tests/headless_contract/session-brief.example.json, src-rust/crates/cli/tests/headless_contract/session-brief.schema.json

Files changed: 0
Commits: 1

Task fb5c5080-78de-11f1-8d12-89fd207991af. Publication is enabled on the hosted test adapter only.

[romgenie]

@cody please run the structured review visibility check. The result comment should now include a Structured review section with mode, evidence_status, reviewed_files, findings/no_findings_reason, tests, and limitations.

[covencat]

Cody dogfood result

Status: success

Cody made 1 commit across 0 files.

Cody

Completed the requested change.

Files changed

No files changed.

Evidence

• PR: [codex] Emit structured headless review results #7
• Base: codex/hosted-review-phase-5 @ 8ee5d1390cd6d5b34bfed14a24a59331ca3dfac1
• Head: codex/headless-review-contract-v2 @ cd47f754ce3f2c9b0bb6aa584d7fd233fb99e511
• Checked-out workspace HEAD: cd47f754ce3f2c9b0bb6aa584d7fd233fb99e511
• Changed files supplied to agent: 6
• Review context SHA-256: dc64f7de02508b0854b2303fc3a010fc92abd1565c582ff3dbcf3092ba0f96b6
• Files: docs/headless-contract.md, src-rust/crates/cli/src/headless.rs, src-rust/crates/cli/tests/headless_contract/result.example.json, src-rust/crates/cli/tests/headless_contract/result.schema.json, src-rust/crates/cli/tests/headless_contract/session-brief.example.json, src-rust/crates/cli/tests/headless_contract/session-brief.schema.json

Structured review

• Mode: pull_request
• Evidence status: complete
• Reviewed files: 6
• Reviewed file list: docs/headless-contract.md, src-rust/crates/cli/src/headless.rs, src-rust/crates/cli/tests/headless_contract/result.example.json, src-rust/crates/cli/tests/headless_contract/result.schema.json, src-rust/crates/cli/tests/headless_contract/session-brief.example.json, src-rust/crates/cli/tests/headless_contract/session-brief.schema.json
• Findings: 0
• No-findings reason: The run completed review mode without returning structured findings; see pr_body for the narrative review.
• Tests reported by runtime: 0
• Limitations: 0

Files changed: 0
Commits: 1

Task 53c31fa0-78e0-11f1-9278-9598e3403ede. Publication is enabled on the hosted test adapter only.

[romgenie]

@cody please run the supporting-file evidence check. The visible result should show supporting_files/supporting-file count and any limitation about whether broader codebase inspection is trace-backed.

[covencat]

Cody dogfood result

Status: success

Cody made 1 commit across 0 files.

Cody

Completed the requested change.

Files changed

No files changed.

Evidence

• PR: [codex] Emit structured headless review results #7
• Base: codex/hosted-review-phase-5 @ 8ee5d1390cd6d5b34bfed14a24a59331ca3dfac1
• Head: codex/headless-review-contract-v2 @ 9e2e44e26a8febd17b43b471849ab97939d79907
• Checked-out workspace HEAD: 9e2e44e26a8febd17b43b471849ab97939d79907
• Changed files supplied to agent: 6
• Review context SHA-256: 03a5d1f8533384dfd4ecba8dfc4ea400552da12f0f31203671144efc0f2d1672
• Files: docs/headless-contract.md, src-rust/crates/cli/src/headless.rs, src-rust/crates/cli/tests/headless_contract/result.example.json, src-rust/crates/cli/tests/headless_contract/result.schema.json, src-rust/crates/cli/tests/headless_contract/session-brief.example.json, src-rust/crates/cli/tests/headless_contract/session-brief.schema.json

Structured review

• Mode: pull_request
• Evidence status: complete
• Reviewed files: 6
• Reviewed file list: docs/headless-contract.md, src-rust/crates/cli/src/headless.rs, src-rust/crates/cli/tests/headless_contract/result.example.json, src-rust/crates/cli/tests/headless_contract/result.schema.json, src-rust/crates/cli/tests/headless_contract/session-brief.example.json, src-rust/crates/cli/tests/headless_contract/session-brief.schema.json
• Supporting files inspected: 0
• Findings: 0
• No-findings reason: The run completed review mode without returning structured findings; see pr_body for the narrative review.
• Tests reported by runtime: 0
• Limitations: 1
  • Supporting-code inspection is not yet trace-backed; supporting_files is empty until tool-read tracing is wired.

Files changed: 0
Commits: 1

Task deff15f0-78e1-11f1-9293-16e242d0d77d. Publication is enabled on the hosted test adapter only.