9ba9f906c5
- Implement `createContextInjectorMessagesTransformHook` for messages transform hook - Refactor existing `chat.message` handler to be a no-op (context injection moved to transform) - Add comprehensive test suite for the new hook (4 test cases) - Update exports to expose new hook function 🤖 GENERATED WITH ASSISTANCE OF [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)