todoapp-app

The use-case layer of tda: async orchestration on top of todoapp-core. This is where decide/apply calls get sequenced into full operations (create, move, claim, link, query, …) against whatever store adapter is wired in.

• Repository ports are async traits (async-trait, ?Send); use cases here are async too — the only place in the workspace where the async boundary is crossed above the core. See tda-spec.md §5.
• Graph-aware operations (move/reparent, cycle checks, subtree walks) live here rather than in core, since they need the store port to traverse.
• Depends only on todoapp-core for production code; store adapters are dev-dependencies used in this crate's own tests.

See the root README and tda-spec.md for the full picture.