Module hook 

scone hook <event>: Claude Code hook handlers, all local, all fail-open. The predecessor’s plugin runs Node scripts with 3-second network caps; ours is the engine binary itself on millisecond budgets (design: docs/superpowers/specs/2026-08-28-team-brain-concept.md).

Contract: stdout becomes injected context (SessionStart / UserPromptSubmit); any internal failure exits 0 with empty stdout so a broken store never stalls a session. Errors go to stderr.

Functions

session_end

session_start

user_prompt