Pure-introspection JSON emitter for the /setup-gbrain skill's
start-up branching. Reports: gbrain presence + version on PATH,
~/.gbrain/config.json existence + engine, `gbrain doctor --json`
health (wrapped in timeout 5s to match the /health D6 pattern),
gstack-brain-sync mode via gstack-config, and ~/.gstack/.git
presence for the memory-sync feature.
Never modifies state. Always emits valid JSON even when every check
is false. Handles malformed ~/.gbrain/config.json without crashing
— gbrain_engine is null in that case, not an error.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Garry Tan