Infrastructure Doc Sync

Keep infrastructure documentation aligned after operational changes. Keep AGENTS.md short and task-scoped; move long runbooks to dedicated docs.

When to Use

• Docker service moved between hosts.
• Network mode/port mapping changed.
• Host role changed (core, camera, edge, backup, etc.).
• Any update to an AGENTS.md file that affects infra context.
• Any user-facing shortcut URL changed (Dashy).

Required Update Targets (As Applicable)