Release v1.23.1

[neubig]

Release v1.23.1

This PR prepares the TypeScript client for the OpenHands Software Agent SDK / agent-server v1.23.1 release.

Included client update

• Add optional user_id to conversation creation request types.
• Thread ergonomic userId options through RemoteConversation.start, RemoteConversationOptions, and ConversationManager helpers.
• Add unit coverage for regular and ACP conversation creation payloads.

Release note

After this PR merges, create/push tag v1.23.1 on main to trigger the TypeScript client Release workflow and publish @openhands/typescript-client@1.23.1.

Testing

• npm test
• npm run build
• npm run format:check
• npm run lint (existing warnings only)
• git diff --check

[all-hands-bot]

🟢 Good taste - Clean, simple addition of observability user ID support.

The implementation correctly threads userId through the conversation creation flow, following the existing pattern for optional configuration (e.g., hookConfig). The fallback logic (options.userId ?? this.userId ?? undefined) is consistent and well-tested.

[RISK ASSESSMENT]

• [Overall PR] ⚠️ Risk Assessment: 🟢 LOW
• Additive change only (optional field)
• Well-tested with unit tests covering both regular and ACP conversation creation
• No breaking changes or security implications
• Aligns with server API v1.23.1

VERDICT:
✅ Worth merging: Solid implementation, ready to ship.

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Workflow run: https://github.com/OpenHands/typescript-client/actions/runs/26359090536