The 52 3p-observer scenarios carry their own question + length
("...what does the actor do next? Answer in one or two sentences."),
but _generation_prompt always appended a 1p "What do you do? Answer in
80-140 words." -- two conflicting questions and a POV flip, so the data
could not reproduce the appendix's 3p measurement through this script
(caught in review).
Add a "self_contained" flag on scenario rows; when set, _generation_prompt
emits the scenario verbatim instead of appending its default 1p question.
Bare-vignette families without the flag are unchanged. README appendix
rewritten to lead with the runnable command and explain the flag.
Co-Authored-By: Claudypoo <288921227+claudypoo@users.noreply.github.com>
wassname-claude