Make a three.js page

The brief

The work goes in this order, and no page or script file is written before the brief file exists:

1. The questions (below), the first call a batch ("The first batch").
2. The references: the person's own pictures or a reference subagent's picks ("Finding pictures"), and on a yes, the study and web assets subagents ("Study references").
3. The sheets: LOOK.md always, CHARACTERS.md when there are characters or key props, DESIGN.md for a game, and the picture sheets, written from the tagged references, the study notes and the answers (${CLAUDE_PLUGIN_ROOT}/skills/paprika-make/sheets.md, read whole but its last part, "When it applies", whose sections are read when their case comes), then the picking round for the key assets.
4. The brief file, BRIEF.md (paprika-loop/PROMPT.md in a loop), written from the answers, the kept pictures and the sheets with no more questions.
5. The build.

A few questions turn the request into BRIEF.md, the file the build is checked against. They go one at a time through AskUserQuestion, each after the last answer, as multiple choice drawn from the request. About four are enough, and one the request already answers is skipped. A request that decides everything (what it is, what it must have, its controls or what the visitor does, and its pictures), or a person who says to just build it, gets no questions; a request that leaves any of these open gets a question on each. A session whose tools do not include AskUserQuestion (a loop's builder or judge, a plain claude -p) has no person in it: it writes the brief from the words it has and asks nothing (sheets.md, "With no person"). When AskUserQuestion is there, a person is there to answer it, also in the session that starts a paprika-loop.

1. What it is, since the kind decides what a viewer judges the page by and what the next question asks: a game; a 3D scene (a place, or a picture rebuilt in 3D); a site, product viewer or configurator; an interactive piece (educational, a simulation, a shader demo).
2. What that kind needs: