Functions become a call graph; a commit marks three of them; a two-way walk proves which endpoints the change can reach — and flags the one it can't.
DEMO 02From console output to a chosen suite: parse real test traffic, compose it with the spec and the test repo, then watch suite shapes and greedy selection play out as circles over the API space.
Both are step-through: ← →, space, or click the stage. Self-contained files — open straight from disk or screen-share fullscreen. A tabbed matrix/greedy variant of demo 02 lives in selection-tabs.html.