The `.toco` directory is used to store agent rules. Only `.md` files are supported. The internal structure is defined as follows:

`global/` Contains general rules applicable to all Agents. These rules take effect globally across the entire system.
`toco/` Contains rules specific to the Toco Agent. These are used for high-level process control. Typically, no new rules need to be added here.
`domain_architect/` Contains rules specific to the Domain Architect Agent, used during the domain modeling phase.
`planner/` Contains rules specific to the Planner Agent, used during the planning and analysis phase.
`designer/` Contains rules specific to the Designer Agent, used for TOCO design work.
`developer/` Contains rules specific to the Developer Agent, used during code implementation.
`tester/` Contains rules specific to the Tester Agent, used during testing and quality assurance.