live-system-verification

Verify features against the live running system — real user flows, real API and model calls, and durable backend state — before calling them done. Covers scratch-datastore isolation, evidence engineering with greppable markers, round-trip persistence checks, and the change classes that only break live. Use when asked to "verify it actually works", "test end to end", "confirm this works in the real app", or before declaring a feature complete on the strength of a green test suite.