- Add Language Rule (MANDATORY) section in OmO Delegation_Rules - Clarify that subagent prompts must always be in English - Update background-task tool documentation with English requirement - Update call-omo-agent tool documentation with English language rule - LLMs perform significantly better with English prompts - Improves consistency and performance across all agent-to-subagent communication 🤖 GENERATED WITH ASSISTANCE OF [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)