Session checkpoint
This is the clearer public alias for session-save. Existing names remain supported.
Resolve this skill directory as SKILL_DIR. Read CLIENT.md beside this file, then read and follow ../session-save/SKILL.md completely as the canonical checkpoint procedure. Use this alias's scripts/session_save.py launcher when that procedure refers to the kernel.
Do not close the session, infer a project, or create behavior beyond the canonical session-save contract.