Storyboard recipe — plan a video as stills the person approves

Use it whenever a run makes or changes a storyboard: when the person asks for one, or when you want their go on the shots before animating. This file owns how to make the board; storyboard-format.md owns the STORYBOARD.md file the tools parse.

A film's shots are planned in the SHOTS line of SPEC.md (spec.md); a storyboard turns those shots into stills when the person wants to approve them first, one frame per shot, carrying its reads and sound (storyboard-format.md).

The person sees the plan as stills on the board, comments or draws on a frame, and says go. The board is boards/storyboard.html, and tools that show it find its frames by the classes in § 2; boxes marked any other way (cell boxes, id="frame-NN" markers) are not found. HyperFrames Desktop and the Studio of npx hyperframes preview show the board in a Storyboard tab beside the preview and bring it to the front when it is written, so hand it over as that tab: with no preview running, start one and give its link, never the file's path. In that Studio, Approve copies "The storyboard is approved. Build the video from it." for the person to paste to you: that is their go.

1. The run

1. Pose each shot in the composition the project renders, the root index.html, at its key moment: real words, real fonts, real colors, the focal point big enough to read on a phone. A shot posed in its own file (compositions/frames/NN-*.html) shows only once it is mounted in index.html (data-composition-src) at its planned start; snapshot renders index.html and nothing else. Before the first pose, copy index.html to boards/.film.html: until the go, the preview plays that film, never the stills (step 4).
2. Snapshot every still in one run with your host's snapshot tool when one is offered (each shot's seconds, out boards/stills); otherwise npx hyperframes snapshot --at <every shot's seconds, in film order> --no-end -o boards/stills. Each still is named frame-NN-at-<seconds>s.png, NN its place in the film. Every snapshot run clears its -o folder and numbers from 00, so never snapshot a single moment into boards/stills/ itself (step 5). Look at every still yourself; fix and snapshot again until each one holds.
3. **Write boards/storyboard.html** (§ 2), styled as a finished board: Inter or the system sans-serif, a light page, each frame a rounded card with its still above its words, even gaps.
4. Put the film back. Copy the posed index.html to boards/.posed.html, then boards/.film.html back over index.html. The board stays on its own page: held stills in the preview read as a slideshow.
5. Stop. Hand the person the board and wait for their go. Notes on frames change only those frames. For each one: copy boards/.posed.html over index.html, re-pose it, snapshot just its moment into boards/stills/redo/ (--at <its seconds>), move that one file over the frame's old still under the old name (its new time in the name if the time changed, and the page's src with it), then put the film back (step 4), rewrite the page and stop again. The other stills stay as approved.
6. Once they say go, copy boards/.posed.html over index.html and animate from the approved stills.

2. The page

One class="frame" box per still, in film order, holding its image, a class="title" line "<two-digit number>: <name>" and a class="time" range in seconds. Optional: a class="words" line under it, and a class="act" heading before the first frame of each act.

<section class="act">Act 1: The hook</section>
<div class="frame">
  <img src="stills/frame-00-at-1.5s.png" alt="" />
  <div class="title">01: The hook</div>
  <div class="time">0.0 to 3.0s</div>
  <p class="words">The cursor drops the photo on the timeline; the title lands on the drop.</p>
</div>

Stills are written next to the page (boards/stills/), so src is relative to boards/ and names the file snapshot wrote for that shot. A still written after the page shows by itself; never reopen or rename the page for it.

3. The plan beside it

STORYBOARD.md at the project root (format: storyboard-format.md) names the same frames in the same order, and its words win over the page's: one heading per frame like ## Frame 1: The hook (0-3s), a - act: bullet for its act, and - status: outline until its still is posed.