Architecture guide for the copper-rs robotics runtime/SDK (the `cu29` crates). Use when learning the execution model or reading and designing Copper applications: compile-time task graphs, generated runtimes, component roles, `CuMsg` data flow, resources, missions, unified logging, and deterministic replay. For implementing a source/task/sink/bridge see `copper-component-design`; for changing runtime internals see `copper-core-dev`; for the full RON schema see `copper-ron-config`.
