Add demo script for printSalesForecasts (Split Loop with Lambda)

Demo on the messier sibling of the exercise method: three unwanted
dependencies in one loop (Scorer incl. static field write, System.out,
clock — clock stripped in 2-min prep). Same six mechanics with SVGs in
the storyboard style, ends green via overload + pure-lambda approval
test. Pointer added to the learning hour's demo section.

ideas/split-loop-with-lambda/split-loop-with-lambda-learning-hour.md

@@ -84,6 +84,9 @@ If there is time, show one slide: the slice graphic from the
 
 ## Demo - The weather slice (10 min)
 
+Full script for the *complex* variant of this demo — on `DailyForecasts.printSalesForecasts()`,
+with SVGs and narration beats — is in [`storyboard/daily-forecasts-demo.md`](storyboard/daily-forecasts-demo.md).
+
 Do the six mechanics on a whiteboard-projection slice of
 `LongRangeForecast` — only the `DATES` loop: