Audience: MXC consumers
All public SDK operations and types are available through @microsoft/mxc-sdk/v1.
Filesystem discovery helpers and their result/options types use 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.