# Goal Refactor the oversized Rust modules in this repository into smaller, focused directory modules without changing runtime behavior, controller flow, or persisted controller file formats. Prioritize `src/ui/mod.rs`, `src/model.rs`, `src/process.rs`, `src/storage/toon.rs`, `src/app/workspace_input.rs`, and `src/app/runtime.rs`. End with thin `mod.rs` facades, clear ownership boundaries, stable public APIs or `pub use` reexports where they reduce churn, colocated tests for the moved logic, and a green Rust verification pass.