vdsl-sync — N-location file synchronization engine.

Topology-centric model: TopologyFile (identity) + LocationFile (per-location state)

• RouteGraph (DAG) による分散ファイルストレージの同期エンジン。

Architecture

• Domain — core entities ([TopologyFile], [LocationFile], [Transfer], [LocationId])
• Application — use-case orchestration ([SdkImpl], [TopologyStore], [TopologyScanner])
• Infrastructure — persistence and transfer ([TransferStore], [StorageBackend])