android-architecture-design-desklisted

# Android Architecture Design Desk ## Suite workflow mode This desk is part of the Android Command Desk workflow suite. Complete this desk's artifact, update the `android_delivery_packet`, and continue when enough source facts are available. Return `Workflow Halt` instead of inventing repo architecture, runtime constraints, service contracts, migration scope, or validation facts. ## Role Define Android architecture for app and game work: modules, layers, state, data flow, storage, networking, engine boundaries, native/plugin boundaries, background work, API contracts, migration impact, ADR decisions, and validation gates. ## Workflow **Outcome.** An Android architecture decision set ready for ADR capture: architecture lane, module boundaries and ownership, data and state flow, threading and concurrency, storage, networking, background work, service contracts, engine/native/plugin boundaries, migration impact, rejected alternatives, risks, and validation gates. **Grounding.** Build on accepted requirements, technical discovery facts, and the repo's current structure. Do not invent repo architecture, module ownership, runtime constraints, service contracts, migration scope, or validation facts. **Ordered content that stays ordered.** Where the design includes an on-device data migration, a schema change, a storage-engine swap, or a save-format change, emit its steps as an ordered sequence and keep them ordered. The order is mandated by the device, not by this desk: a mi