Run an exploratory quality pass over a change that has ALREADY merged in constructorfabric/insight — research the diff, smoke it on a stand carrying that exact build, then execute a test plan across the five quality vectors (Efficiency, Reliability, Performance, Security, Versatility) and hand each surviving finding to file-bug-insight. Use for "test what just merged", "exploratory pass on #N", "check this change across the quality vectors", "we shipped X, go break it", or a QA sweep of a release candidate's new feature. NOT for planning tests before implementation (scope-feature-tests), NOT for binding tests to a FEATURE's Definitions of Done (quality-vector-tests), NOT for validating a whole stand (insight-stand-validate), and NOT for confirming a known defect is fixed (verify-fix).