app-server-protocol: TurnStartParams JSON schema drifts from generated TypeScript

Summary

The pinned app-server protocol artifacts currently disagree for TurnStartParams.

At ref dbfe855f4fd0f5dcdf079882652a8efe622b0595:

• the JSON schema for v2/TurnStartParams does not include collaborationMode
• the generated TypeScript for v2/TurnStartParams does include collaborationMode?: CollaborationMode | null

This breaks downstream consumers that generate runtime schemas from the published JSON schema assets rather than from the TypeScript output.

Repro

JSON schema asset:

• codex-rs/app-server-protocol/schema/json/v2/TurnStartParams.json
• https://raw.githubusercontent.com/openai/codex/dbfe855f4fd0f5dcdf079882652a8efe622b0595/codex-rs/app-server-protocol/schema/json/v2/TurnStartParams.json

Generated TypeScript asset:

• codex-rs/app-server-protocol/schema/typescript/v2/TurnStartParams.ts
• https://raw.githubusercontent.com/openai/codex/dbfe855f4fd0f5dcdf079882652a8efe622b0595/codex-rs/app-server-protocol/schema/typescript/v2/TurnStartParams.ts

Observed mismatch:

• JSON schema top-level properties contains:
• approvalPolicy
• approvalsReviewer
• cwd
• effort
• input
• model
• outputSchema
• personality
• sandboxPolicy
• serviceTier
• summary
• threadId
• but it is missing collaborationMode

Meanwhile the generated TypeScript includes:

collaborationMode?: CollaborationMode | null

Additional note

The same JSON schema file does contain a local CollaborationMode definition, so this looks like a top-level property omission rather than the type being absent entirely.

Also, outputSchema is effectively untyped in the JSON schema asset, while the TypeScript output uses JsonValue | null, so there may be a broader drift between the JSON and TS artifact generation paths.

Impact

Schema-first clients that consume the JSON schema assets generate an incomplete runtime schema for turn/start, and end up having to patch collaborationMode manually.

Expected

The published JSON schema and generated TypeScript artifacts should describe the same TurnStartParams shape.