Tauri desktop app, CLI, and any future frontend. Thin wrappers that compose platform/ capabilities for a specific delivery form.

Invariants: no business logic, no algorithms. Wiring, config loading, user-facing error rendering. Changes here never touch core/ or platform/ as a side effect — if an app needs a new capability, the capability lands in platform/ first.

Crates/dirs that land here during Fase 2: tauri/, cli/. See docs/architecture/phase1/MIGRATION_PLAN.md.