Audience: MXC consumers
All public SDK operations and types are available through mxc_sdk::v1.
Filesystem discovery helpers and their result/options types use v1::policy::filesystem.
Discovery, probes, telemetry, and policy helpers use the same versioned boundary.
Request data and operation controls are separate. Initial PTY size belongs to the corresponding PTY options; runtime resize remains a process-handle operation. Backend policy enforcement and support checks remain native.