Explore repo (readonly)

When to use

• Subagent or parent turn: "Explore premflow / elomaxz and report …"
• Before CMake + MVU refactor when structure is unknown
• User wants report only, not implementation yet

Return format

1. Layout — key dirs (src/, cmake/, models, tests)
2. Build — how to configure and build today
3. MVU / model hooks — where state and update live (file:line references)
4. Gaps — what the plan must add vs what exists
5. Risks — ColumnLimit, single-file god modules, missing tests

Procedure

UpdateCurrentStep → Glob → Grep → Read — no Write unless user escalates to implement.