What problem does it solve? Code search indexes drift out of date as a repository changes, causing semantic search tools like gbrain to return stale or missing results. This Skill re-indexes the repo against gbrain and updates the agent-facing search guidance in CLAUDE.md so AI coding agents can reliably find code. ## Core Features & Use Cases - Repo re-indexing: Wraps the gstack-gbrain-sync orchestrator to probe, register native code surfaces, run capability checks, and emit a verdict block. - Idempotent and re-runnable: Safe to run repeatedly; maintains state so repeated syncs do not corrupt the index. - CLAUDE.md guidance refresh: Updates the "GBrain Search Guidance" section so agents know when to prefer gbrain search over Grep. - Use Case: After a large refactor, an agent's semantic code search stops finding new symbols. Run this Skill to re-index the repo and restore accurate gbrain search results. ## Quick Start Ask the agent to sync gbrain and re-index this repository so code search finds the latest changes.