companion script fails with 'unknown variant thread/name/set' on Codex CLI 0.118.0

[NicoValentine7]

Description

The codex-companion.mjs script fails when used with Codex CLI v0.118.0 (installed via brew install --cask codex).

The companion script sends a thread/name/set JSON-RPC method that is not recognized by the CLI.

Error

[codex] Starting Codex task thread.
Invalid request: unknown variant `thread/name/set`, expected one of `initialize`, `thread/start`, `thread/resume`, ...

Environment

• Codex CLI: v0.118.0 (brew cask)
• codex-plugin-cc: v1.0.2 (commit 8e403f9)
• Node.js: v25.5.0
• OS: macOS (Apple Silicon)

Steps to Reproduce

1. Install Codex CLI v0.118.0 via brew install --cask codex
2. Install codex-plugin-cc via /plugin marketplace add openai/codex-plugin-cc
3. Run /codex:rescue or any task command
4. Observe the thread/name/set error

Expected Behavior

The companion script should use the supported API methods for the current Codex CLI version.

Workaround

Using the Codex CLI directly from the terminal works fine. Only the plugin integration is affected.

[tmchow]

Implemented in #126 - wraps the thread/name/set call in try/catch so it fails silently on older CLI versions.