AGENTS.md git:20260912.78b8c66A

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[Architecture](docs/architecture.md): contracts, ownership, guidance selection. Read [domain guidance](guidance/) for the work; [orchflows](guidance/orchflows.md) for authoring workflows, guidance or libraries. As needed: [home](docs/home.md) for setup, paths and updates; [hosts](docs/hosts.md) for registration and isolation; [history](docs/history.md) for transcripts.