Best possible solution:

Land a keyword-scoped canonicalizer with clean generator-backed Codex protocol drift proof, keeping generated JSON aligned with upstream semantics.

Do we have a high-confidence way to reproduce the issue?

Not applicable; this is an internal generated-asset and script canonicalization PR, not a bug report with a runtime reproduction path. The relevant checks are source review, upstream Codex contract inspection, and generator drift proof.

Is this the best way to solve the issue?

No; sharing one helper between sync and check is the right owner boundary, but array sorting should be constrained to order-insensitive schema contexts before the helper writes runtime validator assets.

Full review comments:

• [P2] Restrict schema array canonicalization by keyword — scripts/lib/codex-app-server-protocol-source.ts:390
  This now runs for every array before writing generated runtime schemas, but it sorts any plain-object items that expose a top-level type regardless of the JSON Schema keyword. Order is significant for schema arrays such as prefixItems, so a future Codex schema with typed tuple positions would be rewritten and then hidden by the same normalization in the drift check; pass parent-key context or restrict sorting to the order-insensitive union keywords this PR proves safe.
  Confidence: 0.82

Overall correctness: patch is incorrect
Overall confidence: 0.78

AGENTS.md: found and applied where relevant.

Codex review notes: model gpt-5.5, reasoning high; reviewed against 79c6136a9e17.

Label changes:

• add rating: 🦐 gold shrimp: Overall readiness is 🦐 gold shrimp; proof is 🌊 off-meta tidepool and patch quality is 🦐 gold shrimp.
• add status: ⏳ waiting on author: ClawSweeper has contributor-facing work open and is waiting for author action. Not applicable: Not applicable: this is a member/maintainer internal tooling and generated-asset PR, so the contributor real-behavior proof gate does not apply; generator drift proof remains a maintainer merge check.
• remove rating: 🐚 platinum hermit: Current PR rating is rating: 🦐 gold shrimp, so this older rating label is no longer current.
• remove status: 👀 ready for maintainer look: Current PR status label is status: ⏳ waiting on author.

Label justifications:

• P3: This is an internal scripts/generated-asset cleanup with limited immediate user-facing blast radius.
• merge-risk: 🚨 compatibility: The changed generated Codex protocol schemas feed runtime validators, and an over-broad canonicalizer or unproved generator drift can break protocol compatibility on future syncs.
• rating: 🦐 gold shrimp: Overall readiness is 🦐 gold shrimp; proof is 🌊 off-meta tidepool and patch quality is 🦐 gold shrimp.
• status: ⏳ waiting on author: ClawSweeper has contributor-facing work open and is waiting for author action. Not applicable: Not applicable: this is a member/maintainer internal tooling and generated-asset PR, so the contributor real-behavior proof gate does not apply; generator drift proof remains a maintainer merge check.

PR surface:

Source 0, Tests +77, Other +82. Total +159 across 9 files.

What I checked:

• Repository policy read: Read the full root policy plus scoped scripts, extensions, and test guides; the relevant guidance requires direct Codex source inspection and aligned generated-artifact sync/check behavior for this PR. (AGENTS.md:8, 79c6136a9e17)
• Current main does not already contain the change: Current main still normalizes generated Codex JSON by plain JSON parse/stringify in the checker and writer; the PR is not obsolete on main. (scripts/check-codex-app-server-protocol.ts:144, 79c6136a9e17)
• PR canonicalizer scope: The PR canonicalizes every array through sortCodexProtocolJsonArrayByType, so array sorting is not currently limited by the parent JSON Schema keyword. (scripts/lib/codex-app-server-protocol-source.ts:390, 001f6bbc2641)
• PR sync/check consumers: The PR uses the same canonicalizer in both the drift checker and the sync writer, so the helper defines both comparison policy and the runtime schema asset output. (scripts/sync-codex-app-server-protocol.ts:31, 001f6bbc2641)
• Generated JSON feeds runtime validation: Current main imports the generated Codex JSON schemas and compiles them with TypeBox validators, making schema-output semantics compatibility-sensitive rather than cosmetic-only. (extensions/codex/src/app-server/protocol-validators.ts:6, 79c6136a9e17)
• Codex exporter contract inspected: At Codex rust-v0.137.0, the export binary calls generate_ts_with_options and generate_json_with_experimental; OpenClaw-side ordering canonicalization is outside the upstream export entrypoint. (../codex/codex-rs/app-server-protocol/src/bin/export.rs:23, cfa0e4c8a658)

Likely related people:

• RomneyDa: Authored the merged Codex app-server 0.137 refresh that updated the same generated protocol assets and check assumptions, and this PR builds directly on that surface. (role: recent area contributor; confidence: high; commits: 112e98faa274; files: extensions/codex/src/app-server/protocol-generated/json/v2/ThreadStartResponse.json, scripts/check-codex-app-server-protocol.ts)
• vincentkoc: Recent API history shows script hardening and Windows protocol formatting work on the Codex protocol generation helpers that this PR changes. (role: script surface contributor; confidence: medium; commits: e0ab71d3dcf1, ce48e4c197e5; files: scripts/lib/codex-app-server-protocol-source.ts, scripts/check-codex-app-server-protocol.ts)
• steipete: Recent history shows validator documentation and the TypeBox validator migration for the runtime surface that consumes these generated schemas. (role: adjacent validator owner; confidence: medium; commits: ff867fcb7fbc, 3548cff14b9c; files: extensions/codex/src/app-server/protocol-validators.ts)

• 🦀 challenger crab: rare, exceptional readiness with strong proof, clean implementation, and convincing validation.
• 🦞 diamond lobster: very strong readiness with only minor maintainer review expected.
• 🐚 platinum hermit: good normal PR, likely mergeable with ordinary maintainer review.
• 🦐 gold shrimp: useful signal, but proof or patch confidence is still limited.
• 🦪 silver shellfish: thin signal; proof, validation, or implementation needs work.
• 🧂 unranked krab: not merge-ready because proof is missing/unusable or there are serious correctness or safety concerns.
• 🌊 off-meta tidepool: rating does not apply to this item.

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