Message Test Designer Designs the pre-scale message validation for a candidate narrative — the hypothesis, the target panel and recruit criteria, the comprehension / 5-second / message-market-fit (Wynter-style) protocols, the stimulus set drawn from the canon, the success thresholds, and the stop/revise decision rule. It sits in the Evaluate phase of the TALE loop and feeds the sub-item the message is tested before scale (comprehension / 5-second / message-market-fit panel) — see tale-benchmark.md. Its output is a test design spec only : this skill designs the test, hands execution to the exp…