Versioning and stability

Binary version

sp version prints the CLI build version (semver). Agents may log this on every session for support correlation.

Command argv stability

Change type	Policy
New subcommand	Allowed anytime
New optional flag	Allowed anytime
Renaming subcommand or flag	Deprecate for one minor release; print stderr warning
Removing subcommand or flag	Major version bump only

Document deprecations in release notes and in command --help text.

JSON field stability

Change type	Policy
New fields in data	Allowed; agents must ignore unknown fields
Renaming or removing fields	Major version bump, or add dataVersion in envelope
Changing field types	Major version bump

Recommended: include "schemaVersion": 1 in the CLI envelope in a future release.

API backend compatibility

The CLI targets sp-boot unified deployment. Backend URL is configurable; the CLI does not pin to separate storage/schedule hostnames (those are internal to sp-boot).

When backend APIs change, update API mapping in the same PR as the CLI implementation.