Use when a user wants to generate or enhance a `.repograph/` knowledge vault for their repository. Orchestrates a conversation-driven interview that produces atomic concept docs, domain MOCs, invariants, and task stubs under `.repograph/`, grounded in existing docs and code.
Use when working in a repository that contains a `.repograph/` knowledge vault. Guides the agent to load the hub MOC first, follow wiki-links on demand, use subagent isolation for multi-concept tasks, honor invariants strictly, and surface verification markers rather than guess.