Entry point and router for the Agentic Engineering suite. Use when starting work in a project that uses (or should use) the documentation chain, when unsure which chain document or skill comes next, or when asked where the project stands. Triggers on "use agentic engineering", "using-agentic-engineering", "where does this project stand in the chain", "what's the next step", "assess the chain", "how do I start with this suite", or a request naming a chain step whose prerequisites aren't in place yet.