Add remotion-video skill (#1 )

* Add remotion-video skill Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019yhnsd9RDz7jDSUUX7oEcH * Add Phase 2 templates to remotion-video skill Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019yhnsd9RDz7jDSUUX7oEcH * Fix captions template background; document browser flag after test render Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019yhnsd9RDz7jDSUUX7oEcH * Add audio/voiceover template (Phase 3), tested with real render Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019yhnsd9RDz7jDSUUX7oEcH * Document font loading and its network requirement; captions-over-video verified Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019yhnsd9RDz7jDSUUX7oEcH --------- Co-authored-by: Claude <noreply@anthropic.com>
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 ---
 name: remotion-video
 description: Create videos from React code with Remotion. Use when the user asks to make, animate, preview, or render a video, motion graphic, intro, caption, or social clip using code.
 ---
 # Remotion Video
 Remotion makes videos out of React components. Each frame is a web page. Render them in order and you get an MP4.
 ## Core ideas
 - **Composition**: one video. Has `width`, `height`, `fps`, `durationInFrames`.
 - **Frame**: `useCurrentFrame()` returns the current frame number. All animation is a function of the frame.
 - **`interpolate`**: maps a frame range to a value range (fade, slide).
 - **`spring`**: natural bouncy motion.
 - **`Sequence`**: shows children only during a frame range.
 - **`AbsoluteFill`**: full-screen layer; stack them for backgrounds.
 - **`Audio` / `OffthreadVideo` / `Img`**: media. Put files in `public/` and load with `staticFile("name.mp3")`.
 ## Workflow
 1. **Plan first.** Ask or decide: length (seconds), size (1920x1080, or 1080x1920 for vertical), fps (30), and the scenes. Keep scenes to a short list.
 2. **Set up** (skip if the project exists):
   ```
   npx create-video@latest
   cd <project> && npm install
   ```
 3. **Write** compositions in `src/`, register them in `src/Root.tsx`.
 4. **Preview**: `npm run dev` (opens Remotion Studio).
 5. **Render**: `npx remotion render <CompositionId> out/video.mp4`
   Still frame: `npx remotion still <CompositionId> out/frame.png --frame=30`
 6. **Verify**: render one still first, check it looks right, then render the full video.
 ## Starter example
 `src/Root.tsx`
 ```tsx
 import { Composition } from "remotion";
 import { Hello } from "./Hello";
 export const RemotionRoot = () => (
  <Composition
    id="Hello"
    component={Hello}
    durationInFrames={150}
    fps={30}
    width={1920}
    height={1080}
    defaultProps={{ title: "Hello, world" }}
  />
 );
 ```
 `src/Hello.tsx`
 ```tsx
 import { AbsoluteFill, interpolate, spring, useCurrentFrame, useVideoConfig } from "remotion";
 export const Hello = ({ title }: { title: string }) => {
  const frame = useCurrentFrame();
  const { fps } = useVideoConfig();
  const opacity = interpolate(frame, [0, 30], [0, 1], { extrapolateRight: "clamp" });
  const scale = spring({ frame, fps, config: { damping: 12 } });
  return (
    <AbsoluteFill style={{ backgroundColor: "#0b1020", justifyContent: "center", alignItems: "center" }}>
      <h1 style={{ color: "white", fontSize: 120, opacity, transform: `scale(${scale})` }}>{title}</h1>
    </AbsoluteFill>
  );
 };
 ```
 ## Rules of thumb
 - Never animate with CSS transitions, `setTimeout`, or CSS animations. They don't render per frame. Drive everything from `useCurrentFrame()`.
 - Always pass `extrapolateRight: "clamp"` to `interpolate` unless you want values to keep growing.
 - Seconds to frames: `seconds * fps`.
 - Use `<Sequence from={..} durationInFrames={..}>` to order scenes; `<Series>` to chain them.
 - Load fonts with `@remotion/google-fonts` so they are ready before rendering.
 - Keep props in `defaultProps` so the user can edit text in the Studio.
 - Rendering needs Chromium and ffmpeg (Remotion installs/handles these); first render can be slow.
 ## Fonts
 Google Fonts: `npm i @remotion/google-fonts`, then
 ```tsx
 import { loadFont } from "@remotion/google-fonts/Inter";
 const { fontFamily } = loadFont();   // use as style={{ fontFamily }}
 ```
 It downloads the font while rendering, so the machine needs internet access to fonts.googleapis.com. If the render fails with "Failed to load font", the network is blocking it: use a local font file in `public/` with `@remotion/fonts` (`loadFont({ family, url: staticFile("x.woff2") })`) or a system font. (Not verified in the sandbox where this skill was tested, which had no access to Google.)
 ## Common problems
 - **Can't download the browser (no internet / locked-down machine)**: point Remotion at an installed Chromium:
  `npx remotion render <Id> out/video.mp4 --browser-executable=/path/to/chromium --chrome-mode=chrome-for-testing`
 - **Blank/white frames**: an asset path is wrong; use `staticFile()`.
 - **Flicker**: an image or font not loaded; use `<Img>` and `@remotion/google-fonts`.
 - **Slow render**: lower resolution/fps while testing, or use `--concurrency`.
 ## Templates
 Copy-paste starting points. Read the one that fits:
 - `templates/captions.md` - words highlighted in time with speech
 - `templates/charts.md` - animated bar chart
 - `templates/intro-outro.md` - title card + chaining scenes with `Series`
 - `templates/audio-voiceover.md` - background music, voiceover, auto video length
 - `templates/vertical.md` - 1080x1920 clips for Reels/TikTok/Shorts
 ## Docs
 https://www.remotion.dev/docs
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 # Template: Audio, music and voiceover
 Put sound files in `public/` (mp3 or wav). Load them with `staticFile()`.
 `src/Narrated.tsx`
 ```tsx
 import { AbsoluteFill, Audio, Sequence, interpolate, staticFile, useVideoConfig } from "remotion";
 import { getAudioDurationInSeconds } from "@remotion/media-utils";
 import type { CalculateMetadataFunction } from "remotion";
 type Props = { title: string; voice: string; music: string };
 // Make the video exactly as long as the voiceover (+1 second of padding).
 export const calcNarratedMetadata: CalculateMetadataFunction<Props> = async ({ props }) => {
  const seconds = await getAudioDurationInSeconds(staticFile(props.voice));
  return { durationInFrames: Math.ceil((seconds + 1) * 30) };
 };
 export const Narrated = ({ title, voice, music }: Props) => {
  const { fps, durationInFrames } = useVideoConfig();
  return (
    <AbsoluteFill style={{ background: "#0b1020", justifyContent: "center", alignItems: "center" }}>
      <h1 style={{ color: "white", fontSize: 110 }}>{title}</h1>
      {/* Background music: quiet, fades out over the last second. */}
      <Audio
        src={staticFile(music)}
        volume={(f) => interpolate(f, [durationInFrames - fps, durationInFrames], [0.15, 0], { extrapolateLeft: "clamp", extrapolateRight: "clamp" })}
      />
      {/* Voiceover starts half a second in, full volume. */}
      <Sequence from={Math.round(fps * 0.5)}>
        <Audio src={staticFile(voice)} volume={1} />
      </Sequence>
    </AbsoluteFill>
  );
 };
 ```
 Register it (note `calculateMetadata`):
 ```tsx
 <Composition
  id="Narrated"
  component={Narrated}
  calculateMetadata={calcNarratedMetadata}
  durationInFrames={300}   // placeholder, replaced by calculateMetadata
  fps={30} width={1920} height={1080}
  defaultProps={{ title: "My story", voice: "voice.mp3", music: "music.mp3" }}
 />
 ```
 Install: `npm i @remotion/media-utils`
 Getting a voiceover
 - Record yourself, or generate speech with a text-to-speech service, and save as `public/voice.mp3`. Never commit API keys; keep them in environment variables.
 - Pair with `templates/captions.md`: feed it word timings from a transcription of the same file.
 Rules
 - Music volume 0.1-0.2 so the voice stays clear.
 - `<Sequence from={...}>` delays when a sound starts.
 - Audio is only in the final render (mp4). Stills (`remotion still`) have no sound.
 - Check the sound made it in: `ffprobe out/video.mp4` should list an `Audio:` stream.
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 # Template: Captions
 Words appear in time with speech. Give each word a start time in seconds.
 `src/Captions.tsx`
 ```tsx
 import { AbsoluteFill, useCurrentFrame, useVideoConfig } from "remotion";
 type Word = { text: string; start: number; end: number }; // seconds
 export const Captions = ({ words, background = "#111" }: { words: Word[]; background?: string }) => {
  const frame = useCurrentFrame();
  const { fps } = useVideoConfig();
  const t = frame / fps;
  // Show a window of up to 5 words around the current one.
  const current = words.findIndex((w) => t >= w.start && t < w.end);
  const i = current === -1 ? 0 : current;
  const visible = words.slice(Math.floor(i / 5) * 5, Math.floor(i / 5) * 5 + 5);
  return (
    <AbsoluteFill style={{ backgroundColor: background, justifyContent: "flex-end", alignItems: "center", paddingBottom: 200 }}>
      <div style={{ fontSize: 72, fontWeight: 800, color: "white", textShadow: "0 4px 12px black", textAlign: "center", maxWidth: "80%" }}>
        {visible.map((w, k) => (
          <span key={k} style={{ color: t >= w.start && t < w.end ? "#ffd400" : "white", marginRight: 16 }}>
            {w.text}
          </span>
        ))}
      </div>
    </AbsoluteFill>
  );
 };
 ```
 Tips
 - Get word times from a transcription tool (e.g. `@remotion/captions` or Whisper) and save them as JSON in `public/`.
 - `background` is the backdrop when there is no video. Pass `"transparent"` when layering over a video.
 - Layer it over the video: `<AbsoluteFill><OffthreadVideo src={staticFile("clip.mp4")} /><Captions words={words} background="transparent" /></AbsoluteFill>`.
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 # Template: Animated bar chart
 Bars grow one after another.
 `src/BarChart.tsx`
 ```tsx
 import { AbsoluteFill, spring, useCurrentFrame, useVideoConfig } from "remotion";
 type Bar = { label: string; value: number };
 export const BarChart = ({ data, color = "#4f8cff" }: { data: Bar[]; color?: string }) => {
  const frame = useCurrentFrame();
  const { fps } = useVideoConfig();
  const max = Math.max(...data.map((d) => d.value));
  return (
    <AbsoluteFill style={{ backgroundColor: "#0b1020", padding: 120, justifyContent: "flex-end" }}>
      <div style={{ display: "flex", alignItems: "flex-end", gap: 40, height: 700 }}>
        {data.map((d, i) => {
          const grow = spring({ frame: frame - i * 6, fps, config: { damping: 15 } });
          return (
            <div key={d.label} style={{ flex: 1, textAlign: "center", color: "white", fontSize: 36 }}>
              <div style={{ height: (d.value / max) * 600 * grow, background: color, borderRadius: 8 }} />
              <div style={{ marginTop: 16 }}>{d.label}</div>
            </div>
          );
        })}
      </div>
    </AbsoluteFill>
  );
 };
 ```
 Tips
 - Delay each bar with `frame - i * 6` (6 frames apart).
 - For lines, animate `strokeDashoffset` on an SVG path using `interpolate`.
 - Keep numbers readable: show the value as text, rounded.
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 # Template: Title intro / outro card
 A short card (2-3 seconds) with a title and subtitle. Use at the start or end.
 `src/TitleCard.tsx`
 ```tsx
 import { AbsoluteFill, interpolate, spring, useCurrentFrame, useVideoConfig } from "remotion";
 export const TitleCard = ({ title, subtitle }: { title: string; subtitle?: string }) => {
  const frame = useCurrentFrame();
  const { fps, durationInFrames } = useVideoConfig();
  const rise = spring({ frame, fps, config: { damping: 14 } });
  const fadeOut = interpolate(frame, [durationInFrames - 15, durationInFrames], [1, 0], {
    extrapolateLeft: "clamp",
    extrapolateRight: "clamp",
  });
  return (
    <AbsoluteFill style={{ background: "linear-gradient(135deg,#1b2a6b,#0b1020)", justifyContent: "center", alignItems: "center", opacity: fadeOut }}>
      <h1 style={{ color: "white", fontSize: 130, margin: 0, transform: `translateY(${(1 - rise) * 60}px)`, opacity: rise }}>{title}</h1>
      {subtitle && <p style={{ color: "#9fb3ff", fontSize: 48, opacity: rise }}>{subtitle}</p>}
    </AbsoluteFill>
  );
 };
 ```
 Chain with the main video using `<Series>`:
 ```tsx
 <Series>
  <Series.Sequence durationInFrames={90}><TitleCard title="My Video" /></Series.Sequence>
  <Series.Sequence durationInFrames={600}><MainScene /></Series.Sequence>
  <Series.Sequence durationInFrames={90}><TitleCard title="Thanks for watching" /></Series.Sequence>
 </Series>
 ```
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 # Template: Vertical clips (Reels / TikTok / Shorts)
 Same code, different size. Register a vertical composition:
 ```tsx
 <Composition
  id="Vertical"
  component={MyScene}
  width={1080}
  height={1920}
  fps={30}
  durationInFrames={30 * 30} // 30 seconds
 />
 ```
 Render: `npx remotion render Vertical out/vertical.mp4`
 Rules
 - Keep text inside the **safe zone**: about 150px from the top, 350px from the bottom (apps cover those parts with buttons and captions), and 60px from the sides.
 - Use big text (60px+). Phone screens are small.
 - Keep clips under 60 seconds (Shorts limit); 15-30 seconds does best.
 - Use `useVideoConfig()` for width/height instead of hard-coding, so the same scene works wide and tall.
 - Put captions in the lower-middle, above the bottom safe zone (see captions.md).
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 node_modules
 out/
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 # Animating Clawd
 Read this whole file before you draw anything. It covers how to make a short, hand-painted cartoon, starring Clawd or any character you design: the rules and animation principles that make it look good, the workflow that catches mistakes, and the full reference for the character and the engine.
 The person prompting you decides **what** the video is about. This guide decides **how** it's made. If they ask for something the rules below forbid (a caption, a 3D spin), do what they ask.
 **No design here is final.** Clawd, the emotions, the props and the helpers are a starting point, not a limit. Change any of them, Clawd's own design included, and add whatever new characters, props or emotions the idea needs. Paint new things with the same tools and rules, so they belong with the rest.
 Look at the model sheets first:
 - [docs/emotions.jpg](docs/emotions.jpg): all 31 emotions.
 - [docs/views.jpg](docs/views.jpg): the five key views, the motion helpers and the hats.
 ---
 ## The three goals
 Every rule below serves one of three goals.
 - **Handmade.** The video should look like someone painted it by hand, frame by frame. That means brush strokes, ink lines that boil, flat 2D and no lettering.
 - **Alive.** Something is always moving and something is always happening. Faces act instead of snapping, and characters are big enough to feel.
 - **One piece.** It's one short film, not a pile of clips. Plan it before you draw it, and link every scene to the next.
 Underneath all three, the viewer has to be able to follow it. Timing (rule 4) is the rule models get wrong most often.
 ## The rules
 ### 1. The medium is solid: brush strokes, flat 2D, boil
 - **Paint everything with p5.brush through `paint()` and `inkLine()`.** Characters get flat `wash` colour plus an ink outline. Backgrounds get soft watercolour `fill` shapes, usually with no outline or a thin one. Never use plain p5 shapes (`rect`, `ellipse`, `fill()`): they look like 2000s Flash.
 - **The linework boils.** `jit()` and `random()` are reseeded 12 times a second (`BOIL`), so every drawing wobbles slightly, like hand-drawn animation. That's the look; don't fight it. For anything that must stay put from frame to frame (star positions, tuft heights), use `hash(i)`. Give each separate element its own seed with `boilSeed(key)` (see Engine), or one moving thing makes everything drawn after it jitter.
 - **Everything is flat 2D. Never project 3D.** Don't rotate a box in perspective, don't use `rotateY` or WEBGL 3D and don't fake depth with math. Clawd turns through **drawn key views** (front → 3/4 → side → back 3/4 → back), exactly like a cartoon model sheet: see `turn()` and `spinView()`. Depth comes from overlap, scale and colour (farther = smaller, bluer, paler), never from a projection.
 - **Light is the one exception.** p5.brush mixes colour like pigment, so a yellow glow painted over blue turns green, and a thin wash over it turns grey. Use `glow()` for anything that shines: it adds real light, under the paper grain.
 - **Soft palette, no pure black or white.** Use `PAL.ink` for black and `PAL.cream` or `PAL.paper` for white. Keep colours soft and harmonious, and keep Clawd clearly readable against the background.
 ### 2. No text
 - **Show it, don't write it.** Models overuse text. No captions, no titles, no labels on objects, no signs, no speech bubbles with words, no words on screens, no "ZZZ" typed in a font.
 - **Clawd's reactions are painted marks, never letters**: `!`, `?`, zzz, sweat, hearts, a bulb, a rain cloud. Use the emotes (see the reference).
 - **A sign that repeats the story is the classic failure.** If Clawd holds a sign saying "I'm lost", the shot has failed. Show Clawd being lost: looking left, then right, the map upside down, a sweat drop.
 - If the prompt truly needs a word (a name, a shop sign that is the joke), use `letter()`. Paint it into the scene, keep it to one or two words and use it once.
 ### 3. Something happens in every scene
 - **Every shot needs an event:** something changes between its first frame and its last. Clawd wants something, finds something, tries, fails, reacts or gets it. "Clawd stands in a meadow being cute" is not a shot.
 - **One focal action at a time.** Stage it with a clear silhouette and nothing competing for attention, so it reads at a glance.
 - **Cause, then reaction.** When something happens, Clawd reacts to it: a take, an emotion change, a turn toward it. The reaction is often the funniest part, so give it time.
 - **Pay it off.** Whatever you set up in a shot (a door, a sandwich, a strange noise) gets resolved on screen, in that shot or a later one.
 ### 4. Timing: model the viewer
 Timing turns a set of drawings into a story. It's also where generated animation fails most often: everything moves at one brisk speed, events pile on top of each other, and moments are over before anyone understands them.
 You know what happens because you wrote the code. The viewer doesn't: they see it once, at full speed, for the first time. **For every moment, ask what the viewer needs to understand and how long that will take them, and time it for that.**
 - **Write the reads.** For each shot, list in order what the viewer has to understand. Each item is a *read*. Every read needs time for the eye to find it, time to understand it, and a moment to register before the next thing starts. Small, distant, fast or subtle things take longer to find and understand than big, central, obvious ones.
 - **One read at a time.** Don't start a new read while the viewer is still taking in the last one. When two things happen at once, the viewer sees only one of them. Put a cause and its reaction in sequence, not on top of each other.
 - **Fast actions, slow meanings.** A motion can be very quick if it's anticipated, but what it means needs held time. Anticipation tells the viewer where to look before the action, and the hold after it lets them understand it. Move quickly through what doesn't matter to the story, and spend time on what does. That contrast between quick and held is what gives a film rhythm; one constant speed, fast or slow, makes it flat and hard to follow.
 - **Lead the eye.** The viewer looks at whatever moves, is bright, is big or is being looked at. Before an important read, get their eye to the right place (a character looks at it, the camera moves to it, it moves or lights up first), and give the eye time to get there.
 - **Let the reads set the length.** A shot is as long as its reads need. A shot with many reads can't be short, and a shot whose reads have all landed shouldn't be padded. That includes the last shot: its final read needs time to land before the video ends.
 For a worked example, see how the demo times its ending, at the end of this guide.
 ### 5. Alive
 - **Nothing is ever still.** Every emotion has its own idle motion (`feel()`), cameras drift or push, grass sways, stars twinkle and the linework boils. A frozen frame reads as a bug.
 - **Faces act, they never snap.** Change moods with `emotions()`. It does anticipation, a squint, a take and overshoot around every change. Never swap `eyes`/`mouth` by hand between two frames.
 - **Move like a cartoon, not a machine.** Every move follows the animation principles in the next section.
 - **Clawd is big.** In a medium shot, `u` is about 20–28 (Clawd is 10u wide, 8u tall). In a close-up it's 40–70. Tiny Clawds (u < 12) are for wide establishing shots only, and never for the whole video.
 - **Everything moves on a beat.** `PROJECT.bpm` drives every idle, bounce and dance, so the whole film shares one pulse. Put the hits on beats (`pulse()`, `beatN()`), even with no music.
 ### 6. Transitions always
 - **Every seam gets a transition:** into the first shot, between every pair of shots and out of the last one. Never start on a hard frame, and never just stop.
 - **Pick a transition that belongs to the story**, and don't default to the same one every time. Some options:
  - a brush wipe (`brushWipe`)
  - an iris or shaped iris (`iris`, `irisShape`)
  - a whip pan with a smear
  - a match cut (the same shape or motion across the cut)
  - a cut on action (cut mid-move, and finish the move in the next shot)
  - a camera move that carries through into the next shot
  - a fade or push from paper or black
 - A plain cut is fine only when it's on action or a deliberate smash cut.
 - **Changes inside a shot are transitions too:** emotions go through `emotions()` and turns go through `turn()`. Props arrive and leave on arcs, never popping in.
 ### 7. One piece: a vision before any code
 - **Storyboard first**, in writing, before you write any scene code (the workflow below has the format). If you're working with a person, show them the storyboard and let them react before you build.
 - **One world.** Pick a palette and a setting that carries through, with a colour arc across the video (e.g. cold night → warm dawn as Clawd's mood lifts).
 - **One thread.** The story has a beginning, a middle and an end, and Clawd's emotional arc follows it. Plan the emotion keys across the whole video, not per shot.
 - **Rhyme the ending with the opening:** the same place, pose or motif, changed. It makes the film feel whole.
 - **Link scenes:** motion continues across cuts, and screen direction stays consistent (if Clawd travels right, keep travelling right). Props and characters carry over.
 ---
 ## Animation principles
 These are the classic principles of character animation, as they apply here. Most of them fix one problem: motion written as code comes out mechanical, because code moves every part at once, on the same curve, by the same amount.
 - **Anticipation.** Before a big move, make a small move the opposite way: a crouch before a jump, a wind-up before a throw, a squint before a take. It tells the viewer something is coming and where to look. `jump()` and `emotions()` build it in.
 - **Squash and stretch.** Bodies squash on impact and stretch when they move fast, keeping their volume (`sq`).
 - **Slow in, slow out.** Almost nothing moves at a constant speed. Things ease out of one pose and into the next. A plain `lerp` over time looks mechanical, so run its progress through an easing (`ease`, `easeIn`, `easeOut`, `backOut`).
 - **Weight.** How something starts and stops says what it weighs. Heavy things take longer to get going and to stop, and land with little bounce. Light things snap into motion, bounce and flutter to rest.
 - **Arcs.** Living things move on arcs, not straight lines: thrown props, hops, arm swings, head turns (`arcPt`).
 - **Overlapping action and follow-through.** Don't move every part at once. The eyes lead, the body follows, and arms, hats, props and tails drag behind, overshoot and settle last. Offset each part's timing a little from the one it hangs off (`spring`, `ring` and `backOut` for the settle).
 - **Avoid twinning.** Code copies values, so both arms end up at the same angle, both eyes blink together and a crowd bounces in unison. Give one arm the action and the other something smaller, and offset timings, phases and `seed`s between characters.
 - **Exaggeration.** Push poses, takes, squash and leans further than feels natural. In a short cartoon, subtle reads as nothing. If it looks like too much on the sheet, pull it back.
 - **Strong key poses.** Each shot's storytelling poses should read as stills, with a clear silhouette and the body leaning into what it's doing, before any motion goes between them. If the key poses don't read, the motion won't fix it.
 - **Show the thought.** A character notices, thinks, then acts, and the eyes move first. The viewer understands a choice when they see it being made.
 - **Secondary action.** Small actions that support the main one (a hat bobbing, an emote popping, grass stirring) add life, but they never compete with it.
 ---
 ## Workflow
 ### 1. Storyboard
 Write `STORYBOARD.md` before any scene code:
 ```
 Logline: one sentence. Clawd wants ___, but ___, so ___.
 World: setting, a small palette, light, how the colour changes across the video.
 Motif: the thing that recurs and pays off.
 Clawd's arc: the emotion keys across the whole video.
 Shots:
  A  start–end  [transition in: ___]  what's seen · the EVENT · Clawd's reaction · camera
     reads:  start–end  the first thing the viewer must understand
             start–end  the next one (where is the viewer's eye when it starts?)
             ...
  B  start–end  [transition: ___]  ...
  ...
  [transition out: ___]
 ```
 The reads are the timing sheet. Give each one a start and an end, make sure each has time to be found and understood, and make sure no two important reads overlap. If a shot's reads don't fit its length, lengthen the shot or cut a read; don't squeeze them.
 Check the storyboard against the rules:
 - Is there an event in every shot?
 - Does every read have time to land before the next one starts?
 - Is there a transition at every seam?
 - Is there any text anywhere?
 - Does the ending rhyme with the opening?
 ### 2. Build
 - Set `duration` (and `bpm`) in [src/config.js](src/config.js).
 - Put your scene in a new file (e.g. `src/scenes/my_video.js`), wrapped in an IIFE, and end it with `shots([...])`. In [studio.html](studio.html), **replace** the `demo.js` script tag with yours.
 - Build and check one shot at a time, in order.
 - Within a shot, block the key poses first and check them as stills (`--sheet` at the key times). Add the motion between them once they read.
 ```js
 // src/scenes/my_video.js
 (() => {
  function park(t, lt, dur) {                        // t = video time, lt = time in this shot, dur = shot length
    camBegin(960 + 20 * Math.sin(lt * .6), 540, 1 + .02 * lt);   // slow drift and push: the camera is never dead
    paint(rectPts(-200, -200, W + 400, H + 400), { wash: PAL.sky, ink: null });           // background
    paint(ellPts(960, 1150, 1400, 380, 40, 2), { wash: PAL.sap, ink: PAL.ink, sw: 1 });   // ground
    const mood = emotions(lt, [[0, 'bored'], [1.2, 'surprised'], [1.7, 'excited']]);      // acted changes
    const hop = jump(lt, 2.2, 2.7, 3);                                                    // add poses that share fields
    clawd(960, 860, 26, { ...mood, dy: mood.dy + hop.dy, sq: mood.sq + hop.sq });
    const at = toScreen(960, 860 - 4 * 26);          // Clawd's screen position, for the iris
    camEnd();
    if (lt < .45) iris(...at, lerp(0, 1500, easeIn(lt / .45)));            // transition in
    if (lt > dur - .3) brushWipe((lt - (dur - .3)) / .6);                 // transition out (next shot finishes it)
  }
  shots([[0, park] /*, [3.5, nextShot], ... */]);
 })();
 ```
 ### 3. Look at it: the review loop
 You can't see motion by reading code. Render and look at every shot, several times, at three zoom levels:
 ```bash
 # contact sheet: the shape of the whole piece (every shot's first, middle and last frames)
 node render.mjs --sheet=0.1,0.8,1.6,2.4,3.1,3.9 --cols=6 --w=320 --out=out/check/sheet.jpg
 # strip: EVERY frame of a moment (turns, takes, jumps, throws, transitions)
 node render.mjs --strip=2.1:2.6 --cols=6 --w=320 --out=out/check/strip.jpg
 # crop: full-resolution detail (faces, hands, contacts, glows); crop=x,y,w,h in frame pixels
 node render.mjs --sheet=2.3,2.4 --crop=760,420,500,400 --w=500 --out=out/check/face.jpg
 # crop-at: the same, following a WORLD point through each frame's camera (a foot or a prop on a moving shot);
 # x,y in world pixels (or an expression evaluated in the page), w,h in frame pixels
 node render.mjs --strip=2.1:2.6 --crop-at=960,700,500,400 --out=out/check/feet.jpg
 ```
 Open each image and actually look at it. Check:
 - **Read:** is the event of each shot clear from its sheet alone? Is Clawd big enough, and does Clawd separate from the background?
 - **Timing.** You can't judge timing from single frames, so read it like a viewer:
  - Render the shot as a sheet at a fixed step (every 0.1–0.15 s) and read it in order.
  - At each frame ask: where is the viewer looking right now, and do they understand it yet?
  - Count the frames each read gets (24 frames = 1 s). A read that flashes by in a few frames, or shares its frames with another read, will be missed.
  - After each important moment, is there time to take it in before the next thing starts?
 - **Motion:** in strips, does every move have anticipation and follow-through? Are there any pops, jumps or snaps between frames? Do the parts move at different times, or all at once? Is anything moving at a constant speed, or mirrored left and right? Are the poses pushed far enough to read?
 - **Boil:** in a strip, each pair of frames that share a boil drawing should match except where something moves. Anything still that changes every frame needs its own `boilSeed()`.
 - **Contacts:** do feet touch the ground? Do held things touch the arm tips? Do thrown things leave from the hand?
 - **Transitions:** check the first and last 0.5 s of every shot and every seam. Does it open and close with a transition?
 - **Rules:** is there any text? Is there any 3D? Is there any dead stretch where nothing is happening?
 - **Colour:** any muddy glows (use `glow()`), pure black or pure white?
 Fix what you find, then look again. **Budget:** at least one sheet per shot, a strip for every key motion and transition, and a crop for every face that carries the story. Contact sheets run about 0.1–1 s per frame, so this is cheap: don't skip it.
 ### 4. Render
 ```bash
 node render.mjs --clip --out=out/video.mp4                      # the whole video, straight to MP4
 node render.mjs --frames --workers=4                            # or: parallel + resumable JPEG frames into out/frames …
 node render.mjs --encode --out=out/video.mp4                    # … then encode them
 ```
 ---
 ## Engine
 ### Files
 | file | what's in it |
 |---|---|
 | `src/config.js` | `PROJECT = { duration, bpm, offset, audio? }` |
 | `src/core.js` | canvas, palette, timing and motion helpers, `paint()`, camera, full-frame effects, `glow()`, lettering, paper, render hooks |
 | `src/clawd.js` | Clawd: views, emotions, eyes, mouths, hats, emotes, moves |
 | `src/timeline.js` | `shots()`, `LOOPS`, `brushWipe()` |
 | `src/sheets.js` | the model sheets as loops (`?loop=emotions`, `?loop=views`) |
 | `src/scenes/demo.js` | an 11-second example. **Don't copy it** (see the end of this guide) |
 | `studio.html` | open it in Chrome to scrub the video (`?t=2.5` jumps to a time, `?loop=emotions` shows a loop) |
 | `render.mjs` | headless renderer: sheets, strips, crops, stills, PNG loops, MP4 |
 ### Frames are pure functions of time
 - **Frames render in parallel and out of order.** A shot is `fn(t, lt, dur)` and must draw the same frame for the same `t`, every time. No state carried between frames, no counters, no `Math.random()`, no physics that integrates frame by frame. Compute everything from `t`, in closed form (the helpers below do this for you).
 - Randomness: `hash(i)` for stable per-object values, and `jit(a)`/`random()` for boil (they change 12 times a second).
 - **Seed each element with `boilSeed(key)`.** Each boil drawing holds for two frames, so anything that isn't moving must draw the same in both. But a moving thing uses a different amount of randomness each frame, which shifts the stream for everything drawn after it, and all of that re-boils every frame and looks jittery.
  - `boilSeed(key)` restarts the stream from the boil frame and a key that stays the same every frame (any string or number, unique within the frame).
  - Call it before each separate element: each background layer, prop and effect.
  - `clawd()` seeds itself and each of its parts, then reseeds when it's done, so nothing drawn after it depends on its pose. Its key is its call order; set `boilKey` if characters come and go mid-shot.
 - **Each shot paints the whole frame,** background included. The paper texture is under everything and the grain is multiplied over the top, so leaving paper showing is a valid look.
 - **Canvas:** 1920×1080, origin top-left, y down.
 - `LOOPS.name = t => {...}; LOOPS.name.len = 4;` makes a standalone loop (tests, GIFs, sheets), rendered with `--loop=name`.
 ### Painting
 `paint(pts, o)` paints one shape from a point list `[[x, y], ...]`:
 | option | meaning |
 |---|---|
 | `wash, washOp` | flat colour (opacity 0–255, default 255). For characters, props, anything solid. |
 | `fill, fillOp, bleed, tex, border` | watercolour fill with bleeding edges and pigment texture. For skies, hills, shading and shadows. `bleed` ~.05–.3, `tex` ~.3–.9. |
 | `hatch: { d, a, o, b, c, w }` | hatching (distance, angle, `{rand, gradient}`, brush e.g. `'charcoal'`/`'HB'`, colour, weight). Texture, sparingly. |
 | `ink, sw, br` | outline colour (default `PAL.ink`), weight (~.4–2), brush. **`ink: null` means no outline.** |
 | `curv` | 0–1: smooth the outline through the points. |
 - **Lines:** `inkLine(pts, sw, colour, brush = 'ink', curvature)`. The kit's brushes are `'ink'`, `'inkfine'` and `'dry'` (bristly). p5.brush's built-ins also work: `'2B'`, `'HB'`, `'charcoal'`, `'marker'`, `'pen'`, `'cpencil'`, `'rotring'`, `'spray'`.
 - **Shapes:**
  - `rectPts(x, y, w, h, jitter)`
  - `ellPts(cx, cy, rx, ry, n, jitter, rot)`
  - `rrPts(x, y, w, h, r, jitter)`: a rounded rectangle
  - `starPts(cx, cy, r, inner, n, rot)`
  - `heartPts(cx, cy, r)`
  - `through(P)`: a smooth curve through the points
  - `ribbon(P, w0, w1)`: a tapered ribbon along a path, as one outline. Use it for tails, trails, vines and noodly arms.
 - **One shape, one outline.** Build a creature or prop from as few outlines as you can, so it doesn't look like glued-on stickers: a tail is one `ribbon`, not five circles.
 - **Light:** `glow(x, y, r, colour, a)`. It's additive, so it stays warm on dark grounds and barely shows on light ones (as real light would). Draw it before the things that sit in front of the light.
 - **Palette** `PAL`: `paper, ink, clay, clayDk, clayLt, night, indigo, rose, ochre, sap, teal, violet, cream, sky`. `mixCol(a, b, k)` mixes two hex colours in RGB. Any hex colour works: pick a small palette per video.
 - **p5.brush quirks:**
  - Colours mix like pigment: yellow over blue makes green. Layer light colours over dark ones with a full-opacity `wash`, or use `glow()`.
  - `wash` at 255 is exact colour; lower opacities mix.
  - Strokes drawn far from the origin under a zoomed camera collapse: from zoom ~2, an outline or a line at large
    world coordinates leaves only a dot at its first vertex. `paint()` and `inkLine()` draw each shape around its own
    centre, which avoids it. A shape much bigger than the canvas can still lose its outline: draw long edges as
    `inkLine`s no bigger than the canvas.
  - Outline weight is in world units, so it grows with the camera's zoom: a fine outline on a small shape becomes a
    dark blob in a close-up. Scale `sw` down with the zoom for small shapes.
  - A NaN in a point list throws `Failed to construct 'OffscreenCanvas': Value is not of type 'unsigned long'`, with
    a stack pointing at your scene rather than the NaN. Guard geometry that can degenerate (`Math.acos` of a ratio > 1).
  - p5 `push()/pop()/translate()/rotate()/scale()` work with all brush calls.
  - Cost is the number of `fill` shapes and strokes: hundreds are fine, thousands are not. Aim for ≤ 1.5 s per frame. The render log prints ms/frame.
  - Some scenes make p5.brush log five `WebGL: INVALID_OPERATION ... not from the associated program` warnings once per page. They're harmless (frames come out identical). Any other page error is real.
 ### Time and motion (all pure functions of t)
 - **Progress and keys:**
  - `seg(t, a, b)`: 0..1 progress through [a, b]
  - `kf(t, [[t0, v0], [t1, v1], ...], ease)`: keyframes; values may be arrays
  - `lerp`, `clamp`, `frac`, `wob(t, freq, phase)`, `TAU`
 - **Easing:** `ease`, `easeIn`, `easeOut`, `backOut` (overshoot) and `elasticOut`.
 - **Rhythm:** `BEAT` (seconds per beat), `bpOf(t)` (beat position), `beatN(t)` (beat number), and `pulse(t, k)` / `pulse2(t, k)`, which are 1 on each beat (or eighth) and then decay.
 - **Acting:**
  - `jump(t, t0, t1, h)`: crouch, stretch, arc and squash-land. Returns `{dy, sq}`.
  - `take(t, t0, amt)`: a surprise take, returns `{sq, dy}`.
  - `stroll(t, t0, t1, x0, x1, u)`: an eased walk. Returns `{x, walk, view, flip, dy}`.
  - `spring(t, t0, k, w)`: a damped wobble after an event, for settles and follow-through.
  - `ring(t, [t0, t1, ...])`: one `spring` kick per event time.
  - `arcPt(p0, p1, h, k)`: a point on a thrown arc.
  - `onTwos(t)`: holds each drawing for two frames. Wrap a shot's `t` in it for a snappier, hand-drawn feel.
 - **Camera:**
  - `camBegin(cx, cy, zoom, rot)` … `camEnd()`: world point (cx, cy) lands at screen centre. One level only; always pair them.
  - `toScreen(x, y)`: world → screen while a camera is active. Use it to aim an iris at a character.
  - `shakeXY(t, amount)`: [dx, dy] to add to the camera on impacts.
 - **Full-frame effects** (screen space, after `camEnd()`):
  - `brushWipe(p, [c1, c2])`: fat strokes cover the frame (p 0 → .5) and then drag off (.5 → 1). Cut under full cover. Its comment in timeline.js shows the two calls.
  - `iris(cx, cy, r, colour)` and `irisShape(pts, colour)`: shaped reveals.
  - `flash(k, colour)`: a full-frame flash.
 - **Lettering** (only if you must, see "No text"):
  - `letter(txt, x, y, size, colour, {pop, rot, alpha, screen})`
  - `sfx(txt, x, y, size, colour, age)`
  - Both are composited at `flushLetters()`, after the shot. If a wipe or iris must cover them, call it yourself first.
 ---
 ## Clawd
 Clawd is the Claude Code mascot: a terracotta block (`PAL.clay`), 10 units wide and 6 tall, with four stubby legs, two little arm nubs and two tall slit eyes. There's no mouth at rest. It's drawn in flat wash with an ink outline and boils like everything else. That's the default design, not a rule: change it if the idea needs it. Within one video, though, keep every character on model, with the same shape and features in every shot.
 ```js
 clawd(x, y, u, options)   // (x, y) = ground point between the feet; u = size unit
 ```
 **Sizes:** Clawd is 10u × 8u (legs included).
 | shot | u | on screen |
 |---|---|---|
 | wide | 10–16 | small in the landscape |
 | medium | 20–28 | the usual acting size |
 | close-up | 40–70 | face acting |
 | extreme close-up | 90+ | camera pushed in on the eyes |
 ### Options
 | group | options |
 |---|---|
 | pose | `dx`, `dy` (in u; −dy = up), `sq` (squash; negative stretches), `rot` (pivots at the feet), `flip`, `sx`, `sy`, `aL`, `aR` (arm angle: 0 = straight out, + = up, − = down; ±1.5 is vertical), `walk` (leg phase), `noLegs`, `noShadow` |
 | view | `view`: front, q, side, qback, back. `smear` 0..1 + `smearDir` ±1 (0 = both sides) for fast moves |
 | face | `eyes`, `mouth`, `lookX`/`lookY` (−1..1), `squint` 0..1, `blush` 0..1, `gloom` 0..1, `lid` 0..1, `seed` (blink timing) |
 | colour | `tint` (pale, flush, blue, rosy, green, gold, or any hex) + `tintK`, or `col`/`dk`/`lt` directly |
 | extras | `hat`, `emote` + `emoteK` (0..1 pop) + `emoteAge`, `draw(u, sw)`, `armL(u, sw)`, `armR(u, sw)` |
 | boil | `boilKey`: a stable id for its boil seeds (default: call order) |
 Options compose by spreading: `clawd(x, y, u, { ...feel('happy', t), ...turn(t, 1, 1.15, 0, .25), hat: 'party' })`. Later spreads win, so put the emotion first and the pose after it. If both an emotion and a pose move the same field (`dy`, `sq`), add them together rather than letting one silently replace the other.
 ### Views and turns
 These are drawn key views. Every view faces screen-right; add `flip: true` to face left.
 | view | what you see |
 |---|---|
 | `front` | the face, both arms, four legs |
 | `q` | 3/4: the face shifted toward the heading, the side face as a darker strip behind it |
 | `side` | profile: one eye near the leading edge, one arm |
 | `qback` | 3/4 from behind: no face |
 | `back` | no face |
 - **Turn with `turn(t, t0, t1, a0, a1)`.** Headings are in turns: 0 = front, .25 = facing right, .5 = back, −.25 = facing left. It steps through the key views over 0.12–0.25 s with smears, like a drawn turn. For a single heading, use `spinView(a)`.
 - **Walks across the screen** read best in `side` view with `walk` driving the legs. `stroll()` gives `q`; override it with `view: 'side'` for a trot.
 - **Facing right, `aL` is the near arm** (drawn in front of the body), and the far arm is behind and darker.
 ### Emotions
 31 emotions. Each is a face, a colour and a way of moving, all locked to the beat. `feel(name, t, over)` returns all of it at time t:
 ```js
 clawd(x, y, u, feel('happy', t));                                   // one emotion, alive
 clawd(x, y, u, feel('sad', t, { view: 'q', lookX: -1 }));             // with overrides
 clawd(x, y, u, emotions(t, [[0, 'sleepy'], [1.9, 'surprised', { lookX: .8 }], [2.5, 'idea']]));   // acted changes
 ```
 | family | emotions |
 |---|---|
 | joy | happy, excited, laugh, love, proud, starstruck, playful, hopeful, relieved |
 | sly | smug, cool, mischief, suspicious |
 | low | sad, cry, bored, sleepy, ko |
 | hot | angry, furious (the lunchbox lid opens), determined, disgusted |
 | alarm | scared, nervous, surprised, confused, dizzy |
 | mind | neutral, thinking, idea, shy |
 - **`emotions(t, keys)`** is how moods change in a shot. Around each key it squints and squashes just before the change (anticipation), swaps the face under the squint, and fires a take sized to the new emotion. The body then settles into the new motion with overshoot, colour cross-fades and the new emote pops in.
  - `emotions(t, keys, { take: .5 })` scales every take.
  - The third element of a key overrides fields for that stretch (e.g. `{ lookX: .8, emote: 'music' }`).
 - To make a new emotion, add an entry to `EMO` in clawd.js. It needs eyes, mouth, optional tint/blush/gloom/lid/emote, `take` (reaction size) and `body(t)` (its idle motion, locked to the beat through `_b(t)`).
 ### Parts
 - **Eyes:** normal, look, wide, happy, closed, sleepy, wink, narrow, angry, determined, sad, teary, cry, squeeze, shine, scared, blank, spark, red, heart, x, swirl, dot, shades.
  - A pair gives mismatched eyes, e.g. `['narrow', 'wide']`.
  - `lookX`/`lookY` aim the pupils, and `squint` closes the eyes from any shape.
 - **Mouths:** o, O, smile, grin, flat, wobble, cat, frown, smirk, laugh, open, wail, teeth, tongue, pout, yawn. Use `null` for none (Clawd's resting face).
 - **Lunchbox lid:** `lid` 0..1 hinges the top of the body open, with teeth pointing into the mouth. It's for fury, chomping and shouting, in the front view only.
 - **Hats:** party, hard, crown, halo, wizard, hood, top, fedora, band, sweatband, beanie, bow, flower, headphones, cat (ears and whiskers). Face pieces: masq, mask, bowtie.
 - **Emotes** are painted marks that pop in by the head: `!` `?` `!!` `!?` zzz, sweat, spark, heart, hearts, anger, steam, bulb, dots, scribble, music, swirl, stars, cloud.
  - `emoteK` is the 0..1 pop and `emoteAge` drives the looping ones; `emotions()` sets both.
  - `emote(kind, x, y, s, k, age)` draws one anywhere, for example over a prop.
 - **Body colour:**
  - `tint` shifts it with the mood: pale (fear), flush (anger), blue (sadness), rosy (love), green (disgust), gold (pride).
  - `gloom` adds a dark forehead with hanging lines, and `blush` adds cheeks (hatched when above .6).
 ### Hooks: props and accessories
 - **`draw(u, sw)`** paints in body-local space, on top of everything else on the body (face, hat, near arm). It squashes, flips and rotates with Clawd. Front-view coordinates:
  - the body spans x −5u..5u and y −8u..−2u
  - the eyes are at (±2.5u, −6u)
  - the mouth is near (0, −4.3u)
 - **`armL(u, sw)` / `armR(u, sw)`** are called at the arm tip, in arm space (+x runs outward along the arm), so a held prop just draws around (0, 0) and follows the arm automatically:
 ```js
 clawd(x, y, 24, { ...feel('proud', t), aR: 1.2, armR: (u, sw) => paint(starPts(u * .8, 0, u * 1.4, .5, 5), { wash: '#FFE27A', sw }) });
 ```
 - Anything the arms can't carry, like a big object overhead, is drawn separately at a point computed from the same pose. The demo's star does this. Make sure it touches: check it with a crop.
 ### Dances
 `move(style, t, seed)` returns beat-locked pose offsets. The styles are bounce, hop, roof (arms up), sway, spin (a drawn spin through the key views once a bar), wave, walk, run, idle, stomp and shimmy. `mix` changes style every two bars. `dancer(x, y, u, style, t, extra)` is `clawd` + `move`. You can combine a dance with a face: `{ ...move('bounce', t), eyes: 'happy', mouth: 'grin' }`.
 ---
 ## Music (optional)
 The kit doesn't need music, but it's built for it:
 1. Set `bpm` to the song's tempo in [src/config.js](src/config.js), and set `offset` to the time of its first downbeat in seconds. Every idle, dance and `pulse()` then locks to the song.
 2. Put the audio in `assets/` and set `PROJECT.audio` (or pass `--audio=`). `--clip` and `--encode` mux it in.
 3. Land hits, cuts and takes on beats (`beatN`, `pulse`). Cut on bar lines for big changes, and give each musical phrase its own visual.
 4. **Lyrics are not text.** Don't put words on screen. Act the meaning of a line instead.
 ## Common failures
 These are the things that make a Clawd video look generated. Check your storyboard and sheets against them:
 - signs, captions, labels or speech bubbles with words
 - Clawd standing still and smiling while nothing happens
 - everything moving at one brisk speed, with events stacked on top of each other and no holds
 - moments that are over before the viewer understands them
 - a tiny Clawd in a big empty landscape for the whole video
 - faces that snap from one expression to another
 - mechanical motion: linear moves, every part moving at once, both arms or several characters in sync
 - timid poses and takes that barely read
 - jittery linework: still things re-boiling every frame because something moving before them shifted the random stream (`boilSeed`)
 - hard cuts everywhere, or a video that just starts and stops
 - 3D rotation, perspective boxes or projected turns
 - plain p5 shapes, gradients or digital glows mixed into the paint (use `paint`/`inkLine`/`glow`)
 - muddy green-grey glows from painting yellow over blue
 - props floating near a hand instead of touching it
 - every shot a different world with nothing linking them
 ## About the demo
 [src/scenes/demo.js](src/scenes/demo.js) ("The fallen star") exists to show the kit working: an acted emotion timeline, a drawn turn, a trot, a pickup, a throw on an arc, `glow`, a brush wipe and an iris in and out. **It's one idea, not a template.** Don't reuse its story, night sky, hills, star or shot structure. Start from the prompt and your own storyboard, and replace its script tag in `studio.html` with yours.
 ### Worked example: how the demo times its ending
 This shows rule 4 applied to one shot of one video. The reads, the numbers and the way it ends are specific to this story; yours will be different. Read it for the reasoning, not the numbers. It's the demo's last shot, from the throw on, in video time:
 | time | read | why it's timed this way |
 |---|---|---|
 | 6.95–7.1 | wind-up and throw | fast motion; it reads because the wind-up anticipates it |
 | 7.1–7.9 | the star flies home | long enough for the eye to follow it from Clawd to the top of the frame; the camera eases back to give it sky |
 | 7.9–8.35 | it arrives: a flare, a sparkle, the sky twinkles | the payoff. Clawd only watches, so nothing competes with it |
 | 8.35–8.95 | Clawd falls in love | the reaction starts only after the viewer has seen the cause |
 | 8.95–9.4 | Clawd waves goodbye | a new action, on its own |
 | 9.4–9.8 | the star twinkles back | the answer to the wave |
 | 9.8–11.0 | iris to Clawd, hold, shut | the last read gets time to land before the video ends |
 The first version packed all of this into about 1.3 s, and nobody could tell what had happened.
@@ -1,21 +0,0 @@
 MIT License
 Copyright (c) 2026 John Heibel
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:
 The above copyright notice and this permission notice shall be included in all
 copies or substantial portions of the Software.
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
@@ -1,41 +0,0 @@
 # Claude Animation Base
 This is a small starter kit with code, instructions and assets for animating a character in [p5.js](https://p5js.org) and [p5.brush](https://github.com/acamposuribe/p5.brush) with Claude Opus 5.5. It's based on the code from the music video [I'm Upping My P(doom)](https://github.com/JohnHeibel/PDoomVideo) and an analysis of what the model did and didn't do well. I highly recommend playing around with your prompting: make it give you the storyboard before coding, give it very broad instructions, try being very specific, ask for subagents, and try a bunch of other fun ways of testing the model's capabilities. In my testing, it can do a lot with very little, but it's also quite accurate when you give it more requirements. Also try asking the model to swap out the character or make new emotions or costumes, give it your own reference images, and try many other fun things like that. I've found that the reasoning level corresponds to how "extravagant" and detail-oriented the model makes the scene. All test videos were generated with Opus 5.5 on xhigh reasoning in Claude Code.
 ![Clawd's emotions, animated](docs/emotions.webp)
 ## Make a video
 Clone it, open it in Claude Code (or any coding agent) and ask for what you want:
 > Read ANIMATION_GUIDE.md, then make a 15-second video of Clawd trying to catch a butterfly.
 The model storyboards first, builds shot by shot, renders contact sheets to check its own work, and writes `out/video.mp4`. [ANIMATION_GUIDE.md](ANIMATION_GUIDE.md) holds the rules it follows: handmade, alive, one piece, no text, transitions always, something happens in every scene, and a solid medium of brush strokes, flat 2D and boiling linework. It also covers timing for the viewer and the core principles of character animation.
 ## Run it yourself
 You need Node.js, Google Chrome and ffmpeg.
 Without a dedicated GPU, p5.brush's watercolour fills make render times fairly slow, measured in seconds per frame. If you're running on integrated graphics, I recommend asking the model to avoid those fills and replace them with something else appropriate. (I love the look of the watercolours, though.)
 ```bash
 npm install
 node render.mjs --clip --out=out/video.mp4
 ```
 That renders the 11-second demo in [src/scenes/demo.js](src/scenes/demo.js). Open [studio.html](studio.html) in Chrome to scrub through it. Add `?loop=emotions` or `?loop=views` to see the model sheets. If Chrome isn't in a standard location, pass `--chrome=<path>` or set `CHROME_PATH`.
 On Linux, `render.mjs` starts Chrome with `--no-sandbox` (Ubuntu 23.10+ blocks Chrome's sandbox in headless use) and also finds a Chromium installed by Playwright. With no GPU at all, add `--soft-gl` to render WebGL in software: slow on watercolour fills, but it works. On a headless Linux machine with an NVIDIA GPU (a cloud or cluster node), add `--gpu-angle=gl-egl` (or `vulkan`); `node gpu_probe.mjs <chrome path>` shows which renderer each set of flags gets.
 ## What's here
 | path | what it is |
 |---|---|
 | [ANIMATION_GUIDE.md](ANIMATION_GUIDE.md) | The rules, the workflow and the full API. Read it first. |
 | [src/clawd.js](src/clawd.js) | Clawd: views, emotions, eyes, mouths, hats, emotes, dances |
 | [src/core.js](src/core.js) | Painting, timing, motion helpers, camera, light, paper |
 | [src/timeline.js](src/timeline.js) | Shots, loops and the brush-wipe transition |
 | [src/config.js](src/config.js) | Length and tempo |
 | [src/scenes/](src/scenes/) | Your video goes here (the demo is an example) |
 | [render.mjs](render.mjs) | Headless renderer: contact sheets, frame strips, crops, stills, MP4 |
 | [docs/](docs/) | Model sheets: [emotions](docs/emotions.jpg) (also [animated](docs/emotions.webp)) and [views, motion and hats](docs/views.jpg) |
@@ -1,30 +0,0 @@
 // Which GPU does headless Chrome's WebGL land on? Prints the unmasked renderer for each flag set.
 // node gpu_probe.mjs <chrome path>
 import puppeteer from 'puppeteer-core';
 const chrome = process.argv[2];
 const base = ['--no-sandbox', '--ignore-gpu-blocklist', '--enable-gpu-rasterization'];
 const candidates = {
  'angle-vulkan': ['--use-angle=vulkan', '--enable-features=Vulkan'],
  'gl-egl': ['--use-gl=egl'],
  'angle-gl-egl': ['--use-angle=gl-egl'],
  'kit-default': ['--use-gl=angle'],
 };
 for (const [name, flags] of Object.entries(candidates)) {
  let browser;
  try {
    browser = await puppeteer.launch({ executablePath: chrome, headless: true, args: [...base, ...flags] });
    const page = await browser.newPage();
    const info = await page.evaluate(() => {
      const gl = document.createElement('canvas').getContext('webgl2') || document.createElement('canvas').getContext('webgl');
      if (!gl) return 'no WebGL context';
      const ext = gl.getExtension('WEBGL_debug_renderer_info');
      return ext ? gl.getParameter(ext.UNMASKED_RENDERER_WEBGL) : gl.getParameter(gl.RENDERER);
    });
    console.log(`${name.padEnd(13)} ${info}`);
  } catch (e) {
    console.log(`${name.padEnd(13)} FAILED: ${e.message.split('\n')[0]}`);
  } finally {
    await browser?.close();
  }
 }
@@ -1,550 +0,0 @@
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 }
@@ -1,16 +0,0 @@
 {
  "name": "claude-animation-base",
  "version": "1.0.0",
  "private": true,
  "license": "MIT",
  "description": "Clawd, painted in p5.brush: a character kit and guide for making hand-painted Clawd animations",
  "scripts": {
    "sheet": "node render.mjs --sheet=0,1,2,3,4,5 --out=out/sheet.jpg",
    "video": "node render.mjs --clip --out=out/video.mp4"
  },
  "dependencies": {
    "p5": "^2.3.3",
    "p5.brush": "^2.2.3",
    "puppeteer-core": "^25.11.0"
  }
 }
@@ -1,157 +0,0 @@
 // render.mjs: renders studio.html in headless Chrome. Length and fps come from the page (PROJECT in src/config.js).
 //
 //   Look at it (open the images with your image viewer / Read tool):
 //     node render.mjs --sheet=0.5,1,1.5,2 [--cols=4] [--w=480] --out=out/check/a.jpg        contact sheet of chosen times
 //     node render.mjs --strip=2.0:2.5 [--cols=6] [--w=320] --out=out/check/strip.jpg        EVERY frame in a stretch (motion)
 //     node render.mjs --sheet=2.1,2.2 --crop=760,300,400,400 --w=600 --out=out/check/face.jpg full-res crops (details)
 //     node render.mjs --strip=2.0:2.5 --crop-at=960,780,500,400 --out=out/check/feet.jpg       crops that follow a WORLD point
 //         (x,y in world px, may be page expressions like PLK.MX(1.38); w,h in screen px) through each frame's camera
 //     node render.mjs --stills=1.2,3.4 --out=out/stills                                     full-res PNGs
 //   Make the video:
 //     node render.mjs --clip [--range=0:4] --out=out/video.mp4                               straight to MP4 (one worker)
 //     node render.mjs --frames [--range=0:8] --workers=4                                     JPEG frames → out/frames (parallel, resumable)
 //     node render.mjs --encode --out=out/video.mp4                                           out/frames → MP4
 //   Standalone loops (LOOPS in the page): add --loop=<name> to any of the above (times are then loop times), or
 //     node render.mjs --loop=emotions --png --out=out/loop_emotions                          one cycle as PNGs (for GIFs)
 //   Music: --audio=assets/song.mp3 (or PROJECT.audio) is muxed into --clip and --encode. Other flags: --fps=24,
 //   --chrome=<path to Chrome/Chromium>.
 import puppeteer from 'puppeteer-core';
 import { spawn } from 'node:child_process';
 import { mkdirSync, writeFileSync, existsSync, statSync, renameSync, readdirSync } from 'node:fs';
 import { dirname, resolve } from 'node:path';
 import { pathToFileURL } from 'node:url';
 import { homedir } from 'node:os';
 const args = Object.fromEntries(process.argv.slice(2).map(a => { const [k, v] = a.replace(/^--/, '').split('='); return [k, v ?? true]; }));
 const CHROMES = [args.chrome, process.env.CHROME_PATH, 'C:/Program Files/Google/Chrome/Application/chrome.exe', 'C:/Program Files (x86)/Google/Chrome/Application/chrome.exe',
  '/Applications/Google Chrome.app/Contents/MacOS/Google Chrome', '/usr/bin/google-chrome', '/usr/bin/chromium', '/usr/bin/chromium-browser',
  ...playwrightChromes()];
 // Chromium builds Playwright downloaded (~/.cache/ms-playwright/chromium-NNNN), newest first
 function playwrightChromes() {
  const dir = `${homedir()}/.cache/ms-playwright`;
  if (!existsSync(dir)) return [];
  return readdirSync(dir).filter(n => /^chromium-\d+$/.test(n)).sort((a, b) => b.split('-')[1] - a.split('-')[1])
    .map(n => `${dir}/${n}/chrome-linux64/chrome`);
 }
 const CHROME = CHROMES.find(p => p && existsSync(p));
 if (!CHROME) { console.error('Chrome not found: pass --chrome=<path> or set CHROME_PATH'); process.exit(1); }
 const fps = +(args.fps || 24), FRAMES_DIR = 'out/frames';
 const run = (cmd, a) => new Promise((ok, bad) => { const p = spawn(cmd, a, { stdio: 'inherit' }); p.on('close', c => c ? bad(new Error(cmd + ' exited ' + c)) : ok()); });
 const times = s => String(s).split(',').map(Number);
 const span = s => String(s).split(':').map(Number);
 // comma-separated fields, keeping commas inside parentheses ('PLK.MX(1.38),PLK.WL,500,300'); numbers stay numbers
 const fields = s => { const out = []; let d = 0, cur = ''; for (const ch of String(s)) { if (ch === ',' && !d) { out.push(cur); cur = ''; continue; } d += ch === '(' ? 1 : ch === ')' ? -1 : 0; cur += ch; } out.push(cur); return out.map(v => isNaN(+v) ? v : +v); };
 if (args.encode) {
  const out = args.out || 'out/video.mp4', n = readdirSync(FRAMES_DIR).filter(f => f.endsWith('.jpg')).length, audio = args.audio;
  console.log(`encoding ${n} frames → ${out}${audio ? ' with ' + audio : ''}`);
  await run('ffmpeg', ['-y', '-loglevel', 'error', '-stats', '-framerate', String(fps), '-i', `${FRAMES_DIR}/f%05d.jpg`,
    ...(audio ? ['-i', audio, '-map', '0:v', '-map', '1:a', '-c:a', 'aac', '-b:a', '192k', '-shortest'] : []),
    '-c:v', 'libx264', '-preset', 'slow', '-crf', '17', '-pix_fmt', 'yuv420p', '-movflags', '+faststart', out]);
  console.log('wrote ' + out);
  process.exit(0);
 }
 // --soft-gl: no GPU on this machine; render WebGL in software (SwiftShader), which Chrome only allows when asked.
 // --gpu-angle=vulkan|gl-egl: headless Linux on an NVIDIA GPU (e.g. a cloud or cluster node); plain --use-gl=angle gets
 // no WebGL context there. Check which GPU Chrome actually lands on with gpu_probe.mjs.
 const ANGLE = { vulkan: ['--use-angle=vulkan', '--enable-features=Vulkan'], 'gl-egl': ['--use-angle=gl-egl'] };
 if (args['gpu-angle'] && !ANGLE[args['gpu-angle']]) { console.error(`--gpu-angle must be one of ${Object.keys(ANGLE)}`); process.exit(1); }
 const gpu = args['soft-gl'] ? ['--use-angle=swiftshader', '--enable-unsafe-swiftshader']
  : args['gpu-angle'] ? ANGLE[args['gpu-angle']]
  : process.platform === 'win32' ? ['--use-angle=d3d11'] : process.platform === 'darwin' ? ['--use-angle=metal'] : ['--use-gl=angle'];
 // Ubuntu 23.10+ blocks Chrome's user-namespace sandbox; headless rendering of local files doesn't need it.
 const sandbox = process.platform === 'linux' ? ['--no-sandbox'] : [];
 const browser = await puppeteer.launch({
  executablePath: CHROME, headless: true, protocolTimeout: 0,
  args: [...sandbox, '--allow-file-access-from-files', '--ignore-gpu-blocklist', ...gpu, '--enable-gpu-rasterization', '--window-size=1920,1080', '--disable-renderer-backgrounding', '--disable-background-timer-throttling']
 });
 async function openPage(tag = '') {
  const page = await browser.newPage();
  page.on('console', m => { if (['error', 'warn'].includes(m.type())) console.log(`[page${tag}]`, m.text()); });
  page.on('pageerror', e => console.log(`[page error${tag}]`, e.message));
  await page.goto(pathToFileURL(resolve('studio.html')).href + '?render', { waitUntil: 'networkidle0', timeout: 300000 });
  await page.waitForFunction('window.ready === true', { timeout: 600000 });
  if (args.loop) {
    const ok = await page.evaluate(name => { if (!LOOPS[name]) return false; window.LOOP = LOOPS[name]; return true; }, args.loop);
    if (!ok) { console.error(`no loop named "${args.loop}"`); process.exit(1); }
  }
  return page;
 }
 const frameOf = async (page, t, type, q) => {
  const url = await page.evaluate((t, type, q) => window.renderAt(t, type, q), t, type, q);
  return Buffer.from(url.slice(url.indexOf(',') + 1), 'base64');
 };
 // the length of whatever is being rendered: a loop's .len, or the video's duration
 const lengthOf = page => page.evaluate(() => window.LOOP ? window.LOOP.len : DUR);
 if (args.sheet || args.strip) {
  const page = await openPage(), out = args.out || 'out/sheet.jpg'; mkdirSync(dirname(out), { recursive: true });
  let ts;
  if (args.strip) { const [a, b] = span(args.strip); ts = []; for (let i = Math.round(a * fps); i <= Math.round(b * fps); i++) ts.push(i / fps); }
  else ts = times(args.sheet);
  const crop = args.crop ? times(args.crop) : null, at = args['crop-at'] ? fields(args['crop-at']) : null;
  const { url, ms } = await page.evaluate((ts, c, w, crop, at) => window.renderSheet(ts, c, w, crop, at), ts, +(args.cols || (args.strip ? 6 : 3)), +(args.w || (args.strip ? 320 : 640)), crop, at);
  writeFileSync(out, Buffer.from(url.slice(url.indexOf(',') + 1), 'base64'));
  console.log(`${out}  (${ts.length} frames)  ms/frame: ${ms.join(' ')}`);
 } else if (args.stills) {
  const page = await openPage(), out = args.out || 'out/stills'; mkdirSync(out, { recursive: true });
  console.log('GPU:', await page.evaluate(() => window.gpuInfo()));
  for (const s of times(args.stills)) {
    const t0 = Date.now(), buf = await frameOf(page, s, 'image/png');
    const f = `${out}/t${s.toFixed(2).replace('.', '_')}.png`; writeFileSync(f, buf);
    console.log(`${f}  ${Date.now() - t0} ms`);
  }
 } else if (args.png) {
  // PNG sequence (for GIFs): a loop's full cycle (frame n equals frame 0, so it isn't rendered), or --range=a:b.
  const probe = await openPage(), len = await lengthOf(probe); await probe.close();
  const [a, b] = args.range ? span(args.range) : [0, len], n = Math.round((b - a) * fps);
  const out = args.out || `out/${args.loop ? 'loop_' + args.loop : 'png'}`, workers = +(args.workers || 3); mkdirSync(out, { recursive: true });
  let next = 0; const start = Date.now();
  await Promise.all(Array.from({ length: workers }, async (_, w) => {
    const page = await openPage('#' + w);
    while (next < n) { const i = next++; writeFileSync(`${out}/f${String(i).padStart(4, '0')}.png`, await frameOf(page, a + i / fps, 'image/png')); }
  }));
  console.log(`${n} frames → ${out}  (${((Date.now() - start) / n).toFixed(0)} ms/frame)`);
 } else if (args.frames) {
  // Parallel and resumable: each worker pulls the next missing frame; files are written atomically.
  const probe = await openPage(), len = await lengthOf(probe); await probe.close();
  const [a, b] = args.range ? span(args.range) : [0, len], workers = +(args.workers || 4);
  mkdirSync(FRAMES_DIR, { recursive: true });
  const first = Math.round(a * fps), last = Math.min(Math.ceil(len * fps) - 1, Math.round(b * fps) - 1);
  const todo = []; for (let i = first; i <= last; i++) { const f = `${FRAMES_DIR}/f${String(i).padStart(5, '0')}.jpg`; if (!existsSync(f) || statSync(f).size < 1000) todo.push(i); }
  console.log(`${todo.length} frames to render (${last - first + 1 - todo.length} already done), ${workers} workers`);
  let next = 0, done = 0; const start = Date.now();
  await Promise.all(Array.from({ length: workers }, async (_, w) => {
    const page = await openPage('#' + w);
    while (next < todo.length) {
      const i = todo[next++], f = `${FRAMES_DIR}/f${String(i).padStart(5, '0')}.jpg`;
      const buf = await frameOf(page, i / fps, 'image/jpeg', .94);
      writeFileSync(f + '.tmp', buf); renameSync(f + '.tmp', f);
      if (++done % 24 === 0 || done === todo.length) {
        const el = (Date.now() - start) / 1000;
        console.log(`frame ${done}/${todo.length}  ${(el / done * 1000).toFixed(0)} ms/frame effective  eta ${((todo.length - done) * el / done / 60).toFixed(1)} min`);
      }
    }
  }));
 } else if (args.clip) {
  const page = await openPage(), len = await lengthOf(page);
  const [a, b] = args.range ? span(args.range) : typeof args.clip === 'string' ? span(args.clip) : [0, len];
  const audio = args.audio || await page.evaluate(() => PROJECT.audio || '');
  const out = args.out || 'out/clip.mp4'; mkdirSync(dirname(out), { recursive: true });
  const ff = spawn('ffmpeg', ['-y', '-loglevel', 'error', '-f', 'image2pipe', '-framerate', String(fps), '-c:v', 'mjpeg', '-i', '-',
    ...(audio ? ['-ss', String(a), '-t', String(b - a), '-i', audio, '-map', '0:v', '-map', '1:a', '-c:a', 'aac', '-b:a', '192k', '-shortest'] : []),
    '-c:v', 'libx264', '-preset', 'medium', '-crf', '18', '-pix_fmt', 'yuv420p', '-movflags', '+faststart', out],
    { stdio: ['pipe', 'inherit', 'inherit'] });
  const n = Math.round((b - a) * fps), start = Date.now();
  for (let i = 0; i < n; i++) {
    const buf = await frameOf(page, a + i / fps, 'image/jpeg', .93);
    if (!ff.stdin.write(buf)) await new Promise(r => ff.stdin.once('drain', r));
    if (i % 24 === 0 || i === n - 1) console.log(`frame ${i + 1}/${n}  ${((Date.now() - start) / (i + 1)).toFixed(0)} ms/frame`);
  }
  ff.stdin.end(); await new Promise(r => ff.on('close', r));
  console.log(`wrote ${out}`);
 } else {
  console.log('nothing to do: see the usage notes at the top of render.mjs');
 }
 await browser.close();
@@ -1,644 +0,0 @@
 // clawd.js: Clawd, painted in watercolour and ink. The silhouette is blocky: a 10×6 body, four stubby legs, two little
 // arm nubs and two slit eyes. `u` is the body unit (the body is 10u wide and 8u tall with legs). (x, y) is the point on
 // the ground between the feet.
 //
 // Body-local coordinates in the front view, used by the o.draw / o.armL / o.armR hooks:
 //   body x -5u..5u, y -8u..-2u; eye centres (±2.5u, -6u), each 1u wide and 2u tall; mouth near (0, -4.3u); legs reach y 0.
 //   Arms pivot at (±4.9u, -4.5u) and are 2.2u long. o.armL / o.armR are called at the arm TIP in arm space (x runs
 //   outward along the arm), so a held prop just draws around (0, 0).
 //
 // Everything here draws one frame. Motion comes from what you pass in: feel() / emotions() for moods, move() for
 // dances, turn() for turns, and jump() / take() / stroll() / spring() from core.js for acting.
 // ---------- views ----------
 // Turns are drawn KEY VIEWS, like a cartoon model sheet, never a rotated 3D box. Every view faces screen-right;
 // flip: true mirrors it to face left. Numbers are in u.
 //   L, R: silhouette edges.  strip: the darker side face.  seam: the edge between faces.
 //   face: where the features go. A front-view x maps to cx + x·fw; sides = which eyes show; mx = mouth x; bx = cheek x.
 //   legs: [x, far] (far legs are darker).  arms: [pivotX, dir, which, layer] ('L' = o.aL / o.armL; layer 0 = behind the
 //   body, 1 = in front of it, 2 = behind and in shadow).  hat / hw: hat offset and width.
 const VIEWS = {
  front: { L: -5, R: 5, face: { cx: 0, fw: 1, sides: [-1, 1], mx: 0, bx: 3.6 }, hat: 0, hw: 1,
           legs: [[-4, 0], [-2, 0], [1, 0], [3, 0]], arms: [[-4.9, -1, 'L', 0], [4.9, 1, 'R', 0]] },
  q:     { L: -5, R: 5.1, strip: [-5, -2.3], seam: -2.3, face: { cx: 1.5, fw: .74, sides: [-1, 1], mx: .3, bx: 3.6 }, hat: .6, hw: 1,
           legs: [[-4.3, 1], [-1.8, 0], [.8, 0], [3.3, 0]], arms: [[5, 1, 'R', 2], [-4.7, -1, 'L', 1]] },
  side:  { L: -3.1, R: 3.1, face: { cx: 1.35, fw: .55, sides: [1], mx: 1.7, bx: 1 }, hat: .3, hw: .66,
           legs: [[-2.1, 1], [1.3, 1], [-2.6, 0], [.9, 0]], arms: [[1.6, 0, 'L', 1]] },
  qback: { L: -5.1, R: 5, strip: [2.3, 5], seam: 2.3, face: null, hat: -.4, hw: 1,
           legs: [[3.3, 1], [.8, 0], [-1.8, 0], [-4.3, 0]], arms: [[-5, -1, 'R', 2], [4.7, 1, 'L', 1]] },
  back:  { L: -5, R: 5, face: null, hat: 0, hw: 1, back: true,
           legs: [[-4, 0], [-2, 0], [1, 0], [3, 0]], arms: [[-4.9, -1, 'R', 0], [4.9, 1, 'L', 0]] },
 };
 // Key view for a heading in turns: 0 = front, .25 = facing right, .5 = back, .75 (or -.25) = facing left.
 // Snaps to the nearest eighth, which is how a drawn turn works: front → q → side, one drawing per step.
 function spinView(a) {
  const K = [['front', 0], ['q', 0], ['side', 0], ['qback', 0], ['back', 0], ['qback', 1], ['side', 1], ['q', 1]];
  const [view, f] = K[((Math.round(a * 8) % 8) + 8) % 8]; return { view, flip: !!f };
 }
 // A turn from heading a0 to a1 (in turns) between t0 and t1. It steps through the key views and smears the
 // in-between drawings. Spread it into clawd(): clawd(x, y, u, { ...feel('happy', t), ...turn(t, 2, 2.2, 0, .25) }).
 function turn(t, t0, t1, a0, a1) {
  const k = ease(seg(t, t0, t1)), v = spinView(lerp(a0, a1, k));
  return { ...v, smear: t > t0 && t < t1 ? .55 * Math.sin(k * Math.PI) : 0, smearDir: 0 };
 }
 // ---------- colour ----------
 // Tints shift the body colour with the mood. tint: a name here or any hex colour; tintK: 0..1 strength.
 const TINT = { pale: '#F6E6D2', flush: '#E23E36', blue: '#6D86BE', rosy: '#EF8EA8', green: '#98B25E', gold: '#F0BE46' };
 function tintCols(o) {
  const c = { col: o.col || PAL.clay, dk: o.dk || PAL.clayDk, lt: o.lt || '#F5B394' };
  const tc = o.tint && (TINT[o.tint] || o.tint), k = clamp(o.tintK ?? 1);
  if (!tc || k <= 0) return c;
  return { col: mixCol(c.col, tc, .55 * k), dk: mixCol(c.dk, mixCol(tc, PAL.ink, .35), .5 * k), lt: mixCol(c.lt, mixCol(tc, '#FFFFFF', .4), .45 * k) };
 }
 // ---------- Clawd ----------
 // Options (all optional):
 //   pose:   dx, dy (in u; negative dy = up), sq (squash; negative stretches), rot (pivots at the feet), flip, sx, sy,
 //           aL, aR (arm raise angles: 0 = straight out, + = up, - = down), walk (phase; the legs step), noLegs, noShadow
 //   view:   front | q | side | qback | back (see VIEWS). smear 0..1 + smearDir ±1 (0 = both sides) for fast moves
 //   face:   eyes (a name, or [left, right] for mismatched eyes), mouth, lookX / lookY (-1..1), squint 0..1, blush 0..1,
 //           gloom 0..1 (dark forehead with gloom lines), lid 0..1 (lunchbox mouth, front view only), seed (blink timing)
 //   colour: col / dk / lt, or tint + tintK
 //   extras: hat, emote + emoteK (0..1 pop) + emoteAge (s since it appeared), draw(u, sw), armL(u, sw), armR(u, sw)
 //   boil:   boilKey (a stable id for its boil seeds; defaults to call order, so set it if characters come and go mid-shot)
 function clawd(x, y, u, o = {}) {
  // each part boils from its own seed (see boilSeed), so a moving arm never re-boils the body, or the next character
  const id = o.boilKey ?? ++CLAWD_N, rs = part => boilSeed(`clawd ${id} ${part}`);
  x += (o.dx || 0) * u;
  const V = VIEWS[o.view] || VIEWS.front;
  const dy = (o.dy || 0) * u, sq = (o.sq || 0) + (o.take || 0), sm = clamp(o.smear || 0);
  const sw = clamp(u / 15, .45, 2.4) * (o.swMul || 1), J = u * .07;
  const { col, dk, lt } = tintCols(o), far = mixCol(dk, PAL.ink, .22);
  rs('shadow');
  if (!o.noShadow) {
    const f = 1 - Math.min(.5, Math.abs(o.dy || 0) * .06), w = (V.R - V.L) / 10;
    paint(ellPts(x, y + u * .15, u * 5.6 * f * w, u * f, 22), { fill: PAL.ink, fillOp: 90, bleed: .25, tex: .3, border: .1, ink: null });
  }
  if (sm > .05) smearTrail(x, y + dy, u, V, sm, o.smearDir ?? (o.flip ? -1 : 1), col);
  push();
  translate(x, y + dy);
  if (o.rot) rotate(o.rot);
  scale((o.flip ? -1 : 1) * (o.sx ?? 1) * (1 + sq * .6) * (1 + sm * .35), (o.sy ?? 1) * (1 - sq));
  const arm = ([px, dir, which, layer]) => {
    rs('arm' + which);
    const a = which === 'L' ? (o.aL ?? .2) : (o.aR ?? .2), hook = which === 'L' ? o.armL : o.armR;
    // a raised (or dropped) arm slides its root out to the body's edge, so it stands beside the body instead of behind it
    push(); translate((px + dir * .55 * clamp((Math.abs(a) - .7) / .9)) * u, -4.5 * u);
    if (dir === 0) {   // side view: the near arm reaches forward past the front edge; a raises it, a < 0 lowers it
      translate(0, .3 * u); rotate(.7 - a);
      paint(rectPts(-.2 * u, -.45 * u, 2.3 * u, .9 * u, J * .6), { wash: col, washOp: 255, fill: dk, fillOp: 60, tex: .5, ink: PAL.ink, sw: sw * .8 });
      if (hook) { translate(2.1 * u, 0); hook(u, sw); }
    } else {
      rotate(dir < 0 ? a : -a);
      paint(rectPts(dir < 0 ? -2.2 * u : 0, -.5 * u, 2.2 * u, u, J * .6), { wash: layer === 2 ? mixCol(col, dk, .4) : col, washOp: 255, fill: dk, fillOp: 60, tex: .5, ink: PAL.ink, sw: sw * .8 });
      if (hook) { translate(dir * 2.2 * u, 0); if (dir < 0) scale(-1, 1); hook(u, sw); }
    }
    pop();
  };
  // arms behind, then legs (under the body), then the body, then arms in front
  V.arms.filter(a => a[3] !== 1).forEach(arm);
  if (!o.noLegs) V.legs.forEach(([lx, isFar], i) => {
    rs('leg' + i);
    let h = 2.2, sx = 0;
    if (o.walk != null) {
      if (o.view === 'side') {   // profile: diagonal pairs swing together, lifting as they swing forward
        const ph = (o.walk + [0, .5, .5, 0][i]) * TAU;
        sx = Math.sin(ph) * .55; h = 2.2 - Math.max(0, Math.cos(ph)) * .8;
      } else { const ph = Math.sin((o.walk + (i % 2 ? .5 : 0)) * TAU); if (ph > 0) h = 2.2 - ph * .9; }
    }
    paint(rectPts((lx + sx) * u, -2.4 * u, u, h * u, J * .6), { wash: isFar ? far : dk, washOp: 255, ink: PAL.ink, sw: sw * .8 });
  });
  rs('body');
  const lid = V === VIEWS.front ? o.lid || 0 : 0;
  if (lid > .01) lunchbox(u, o, sw, J, lid, col, dk, lt);
  else {
    const L = V.L * u, R = V.R * u, wk = (V.R - V.L) / 10, body = rectPts(L, -8 * u, R - L, 6 * u, J);
    paint(body, { wash: col, washOp: 255, ink: null });
    const px = V.strip ? (V.strip[0] < 0 ? (V.seam + V.R) / 2 - 1.2 : (V.L + V.seam) / 2 - .6) : -1.6 * wk;
    paint(ellPts(px * u, -6.4 * u, 3.4 * u * (V.strip ? .75 : wk), 1.5 * u, 18, J * 2, -.08), { fill: lt, fillOp: V.back ? 80 : 120, bleed: .2, tex: .85, border: .8, ink: null });
    paint(rectPts(L + .2 * u, -3.8 * u, R - L - .4 * u, 1.6 * u, J), { fill: dk, fillOp: 120, bleed: .03, tex: .7, border: .5, ink: null });
    if (V.strip) {
      paint(rectPts(V.strip[0] * u, -8 * u, (V.strip[1] - V.strip[0]) * u, 6 * u, J * .5), { fill: dk, fillOp: 150, bleed: .04, tex: .6, border: .4, ink: null });
      inkLine([[V.seam * u + jit(J), -7.9 * u], [V.seam * u + jit(J), -5 * u], [V.seam * u + jit(J), -2.1 * u]], sw * .55, PAL.ink, 'inkfine', 0);
    }
    paint(body, { ink: PAL.ink, sw });
    if (o.gloom > .02) gloom(u, sw, V, o.gloom);
    if (V.face) {
      const F = V.face;
      push(); translate(F.cx * u, 0); scale(F.fw, 1);
      if (o.blush) blush(u, sw, F, o.blush === true ? 1 : o.blush);
      if (o.hat === 'mask' && F.sides.length > 1) paint([[-5.5 * u, -7.7 * u], [5.5 * u, -7.7 * u], [4.4 * u, -4.7 * u], [.6 * u, -5.4 * u], [-.6 * u, -5.4 * u], [-4.4 * u, -4.7 * u]], { wash: PAL.violet, ink: PAL.ink, sw: sw * .7 });
      rs('eyes'); eyes(u, o, sw, F.sides, sm); rs('mouth');
      push(); translate(F.mx * u, 0); mouth(u, o.mouth, sw); pop();
      if (['cat', 'masq', 'bowtie'].includes(o.hat)) faceHat(u, o.hat, sw, F.sides);
      pop();
    }
    rs('hat'); push(); translate(V.hat * u, 0); scale(V.hw, 1); hat(u, o.hat, sw); pop();
  }
  V.arms.filter(a => a[3] === 1).forEach(arm);
  rs('draw'); if (o.draw) o.draw(u, sw);
  pop();
  rs('emote');
  if (o.emote) {
    const top = EMOTE_TOP.includes(o.emote), dir = o.flip ? -1 : 1;
    const ex = top ? x + dir * V.hat * u : x + dir * (V.R + .4) * u, ey = y + dy + (top ? -10.4 : -8.6) * u * (1 - sq);
    emote(o.emote, ex, ey, u * .9, o.emoteK ?? 1, o.emoteAge ?? T);
  }
  rs('after');   // so whatever is drawn next doesn't depend on this pose
 }
 // The lunchbox mouth: the top 2.9u of the body hinges open at the back-left corner (front view only). The mouth is the
 // dark wedge between jaw and lid; both rows of teeth point INTO it, staggered, and each tooth is sized to the gap at
 // its spot, so they never cross, even when the lid is only open a crack.
 function lunchbox(u, o, sw, J, lid, col, dk, lt) {
  const hy = -5.1 * u, A = lid * 1.25, gap = x => (x + 5 * u) * Math.sin(A);
  const tooth = (tx, dir) => {   // base on the jaw line from tx to tx + 1.3u, tip pointing up (dir -1) or down (dir 1)
    const h = Math.min(.8 * u, .42 * gap(tx + .65 * u)); if (h < .12 * u) return;
    paint([[tx, hy], [tx + 1.3 * u, hy], [tx + .65 * u, hy + dir * h]], { wash: PAL.cream, ink: PAL.ink, sw: sw * .45 });
  };
  // lower jaw
  paint(rectPts(-5 * u, hy, 10 * u, 3.1 * u, J), { wash: col, washOp: 255, ink: null });
  paint(rectPts(-4.8 * u, -3.8 * u, 9.6 * u, 1.6 * u, J), { fill: dk, fillOp: 120, bleed: .03, tex: .7, border: .5, ink: null });
  // the open mouth: a dark wedge from the hinge to the lid's far corner, with the tongue lying in it
  paint([[-5 * u, hy], [5 * u, hy], [-5 * u + 10 * u * Math.cos(A), hy - 10 * u * Math.sin(A)]], { wash: '#4A1F2A', ink: null });
  const th = Math.min(.5 * u, .3 * gap(1.8 * u));
  if (th > .08 * u) paint(ellPts(1.8 * u, hy - th * .7, 2.2 * u, th, 16), { wash: PAL.rose, fill: '#E2476E', fillOp: 60, ink: null });
  for (let i = 0; i < 6; i++) tooth(-4.4 * u + i * 1.6 * u, -1);
  paint(rectPts(-5 * u, hy, 10 * u, 3.1 * u, J), { ink: PAL.ink, sw });
  // lid
  push(); translate(-5 * u, hy); rotate(-A); translate(5 * u, -hy);
  paint(rectPts(-5 * u, -8 * u, 10 * u, 2.9 * u, J), { wash: col, washOp: 255, ink: null });
  paint(ellPts(-1.6 * u, -6.9 * u, 3.2 * u, 1 * u, 16, J), { fill: lt, fillOp: 110, bleed: .15, tex: .8, border: .8, ink: null });
  for (let i = 0; i < 5; i++) tooth(-3.6 * u + i * 1.6 * u, 1);
  paint(rectPts(-5 * u, -8 * u, 10 * u, 2.9 * u, J), { ink: PAL.ink, sw });
  if (o.gloom > .02) gloom(u, sw, VIEWS.front, o.gloom);
  eyes(u, o, sw, [-1, 1], 0);
  hat(u, o.hat, sw);
  pop();
 }
 // A smear drawing: dry-brush streaks and speed lines trailing a fast move (dir ±1), or on both sides for a spin (0).
 function smearTrail(x, y, u, V, k, dir, col) {
  const sides = dir === 0 ? [-1, 1] : [-dir];
  for (const s of sides) for (let i = 0; i < 4; i++) {
    const yy = y - (7.2 - i * 1.5) * u, x0 = x + s * (V.R - .5) * u, len = (3 + 3 * hash(i + 7 * s)) * u * k;
    inkLine([[x0, yy], [x0 + s * len * .5, yy + jit(u * .1)], [x0 + s * len, yy]], 2.2 * k, col, 'dry', .3);
    if (i % 2) inkLine([[x0 + s * len * .3, yy + .5 * u], [x0 + s * len * 1.1, yy + .5 * u]], .6, PAL.ink, 'inkfine', 0);
  }
 }
 // Gloom: a dark wash over the forehead with hanging gloom lines (despair, dread, a guilty conscience).
 function gloom(u, sw, V, g) {
  const L = V.L * u, R = V.R * u;
  paint(rectPts(L + .15 * u, -7.9 * u, R - L - .3 * u, 2.6 * u, u * .05), { fill: PAL.indigo, fillOp: 150 * g, bleed: .08, tex: .5, border: .6, ink: null });
  const n = Math.round((V.R - V.L) * .7);
  for (let i = 0; i < n; i++) { const gx = lerp(L + .7 * u, R - .7 * u, i / Math.max(1, n - 1)); inkLine([[gx, -7.8 * u], [gx + jit(u * .05), (-7.8 + 2.4 * g * (.7 + .3 * hash(i))) * u]], sw * .45, PAL.ink, 'inkfine', 0); }
 }
 function blush(u, sw, F, b) {
  for (const s of F.sides) {
    const bx = s * F.bx * u;
    paint(ellPts(bx, -4.6 * u, u * .85, u * .42, 14), { fill: PAL.rose, fillOp: 170 * clamp(b), bleed: .2, ink: null });
    if (b > .6) for (let k = 0; k < 3; k++) inkLine([[bx - .5 * u + k * .4 * u, -4.35 * u], [bx - .3 * u + k * .4 * u, -4.85 * u]], sw * .4, mixCol(PAL.rose, PAL.ink, .3), 'inkfine', 0);
  }
 }
 // ---------- eyes ----------
 // normal, look, wide, happy, closed, sleepy, wink, narrow, angry, determined, sad, teary, cry, squeeze, shine,
 // scared, blank, spark, red, heart, x, swirl, dot, shades. o.eyes may be a pair: ['narrow', 'wide'].
 function eyes(u, o, sw, sides, smear = 0) {
  const kinds = Array.isArray(o.eyes) ? o.eyes : o.eyes === 'wink' ? ['happy', 'normal'] : [o.eyes || 'normal', o.eyes || 'normal'];
  const sqz = clamp(o.squint || 0);
  if (smear > .5) { for (const s of sides) inkLine([[s * 2.5 * u - .9 * u, -6 * u], [s * 2.5 * u + .9 * u, -6 * u]], sw * 1.4, PAL.ink, 'ink', 0); return; }
  if (sqz > .8) { for (const s of sides) inkLine([[s * 2.5 * u - .8 * u, -5.9 * u], [s * 2.5 * u + .8 * u, -5.9 * u]], sw, PAL.ink, 'ink', 0); return; }
  if (kinds[0] === 'shades') {   // sunglasses: two dark lenses, a bridge, arms running back along the head
    const P = pts => pts.map(([a, b]) => [a * u, b * u]);
    const lens = cx => P([[cx - 1.4, -7.1], [cx + 1.4, -7.1], [cx + 1.3, -6.2], [cx + .8, -5.35], [cx, -5.2], [cx - .8, -5.35], [cx - 1.3, -6.2]]);
    if (sides.length > 1) {
      for (const s of [-1, 1]) inkLine(P([[s * 3.9, -6.85], [s * 5, -6.95]]), sw * .8, PAL.ink, 'ink', 0);
      inkLine(P([[-1.15, -6.75], [0, -7.05], [1.15, -6.75]]), sw * .8, PAL.ink, 'ink', .5);
    } else inkLine(P([[1.1, -6.85], [-5, -6.95]]), sw * .8, PAL.ink, 'ink', 0);   // profile: the arm runs back to the ear
    for (const s of sides) {
      const cx = s * 2.5;
      paint(lens(cx), { wash: '#2A2740', ink: PAL.ink, sw: sw * .9, curv: .3 });
      inkLine(P([[cx - .85, -6.35], [cx - .25, -6.85]]), sw * .45, PAL.cream, 'inkfine', 0);   // glint
      inkLine(P([[cx - .45, -5.85], [cx - .05, -6.2]]), sw * .3, PAL.cream, 'inkfine', 0);
    }
    return;
  }
  if (sqz > 0) { push(); translate(0, -6 * u); scale(1 + sqz * .15, 1 - sqz); translate(0, 6 * u); }
  for (const s of sides) { push(); translate(s * 2.5 * u, -6 * u); eye(kinds[s < 0 ? 0 : 1], s, u, o, sw); pop(); }
  if (sqz > 0) pop();
 }
 // One eye, drawn around its centre. s = -1 for the left eye, 1 for the right.
 function eye(e, s, u, o, sw) {
  const lx = (o.lookX || 0) * u * .5, ly = (o.lookY || 0) * u * .4;
  const slit = (w, h) => {
    paint(rectPts(-w / 2 * u + lx, -h / 2 * u + ly, w * u, h * u, u * .04), { wash: PAL.ink, ink: null });
    if (u > 9) paint(ellPts(lx - w * .18 * u, ly - h * .29 * u, u * .17 * w, u * .24 * w, 10), { wash: PAL.cream, washOp: 230, ink: null });
  };
  const blinkOn = ['normal', 'look', 'wide'].includes(e) && ((T * .9 + (o.seed || 0) * 1.7) % 3.3) < .12;
  if (blinkOn) { inkLine([[-.7 * u, .5 * u], [.7 * u, .5 * u]], sw, PAL.ink, 'ink', 0); return; }
  const lineEye = (pts, w = 1.3, c = .2) => inkLine(pts.map(([a, b]) => [a * u, b * u]), sw * w, PAL.ink, 'ink', c);
  switch (e) {
    case 'normal': case 'look': slit(1, 2); break;
    case 'wide': slit(1.25, 2.7); break;
    case 'happy': lineEye([[-.9, .7], [0, -.5], [.9, .7]]); break;
    case 'closed': lineEye([[-.9, .2], [0, .6], [.9, .2]], 1.2, .4); break;
    case 'sleepy':
      paint(rectPts(-.5 * u + lx, .05 * u, u, .95 * u, u * .03), { wash: PAL.ink, ink: null });
      lineEye([[-.8, .05], [0, -.1], [.8, .1]], 1.1, .4); break;
    case 'narrow': paint(rectPts(-.6 * u + lx, -.1 * u + ly, 1.2 * u, .7 * u, u * .03), { wash: PAL.ink, ink: null }); break;
    case 'angry': case 'determined': {   // top edge slants DOWN toward the middle
      const hi = e === 'angry' ? .75 : .5, top = e === 'angry' ? -.7 : -.55;
      const P = [[-.65, s < 0 ? top : top + hi], [.65, s < 0 ? top + hi : top], [.65, 1], [-.65, 1]];
      paint(P.map(([a, b]) => [a * u + lx, b * u + ly]), { wash: PAL.ink, ink: null });
      if (e === 'determined' && u > 9) paint(ellPts(lx - .2 * u, ly + .25 * u, u * .16, u * .2, 8), { wash: PAL.cream, ink: null });
      break;
    }
    case 'sad': case 'teary': {   // top edge slants UP toward the middle (worried)
      const P = [[-.6, s < 0 ? -.2 : -.85], [.6, s < 0 ? -.85 : -.2], [.6, .9], [-.6, .9]];
      paint(P.map(([a, b]) => [a * u + lx, b * u + ly]), { wash: PAL.ink, ink: null });
      if (u > 9) paint(ellPts(lx - .18 * u, ly + .05 * u, u * .16, u * .22, 8), { wash: PAL.cream, ink: null });
      if (e === 'teary') {
        const w = Math.sin(T * 9 + s) * .06 * u;
        paint(ellPts(0, .95 * u + w, .95 * u, .38 * u, 14), { wash: PAL.sky, washOp: 210, fill: '#FFFFFF', fillOp: 60, ink: PAL.ink, sw: sw * .4 });
        paint(ellPts(-.35 * u, .85 * u + w, .18 * u, .1 * u, 8), { wash: '#FFFFFF', ink: null });
      }
      break;
    }
    case 'cry': {   // squeezed shut, with tear streams running down the body and drops flicking off
      lineEye([[-.9, .45], [-.3, -.05], [.3, .15], [.9, -.2]].map(([a, b]) => [a * -s, b]), 1.3, .3);
      const R = []; for (let k = 0; k <= 5; k++) R.push([(s * .55 + Math.sin(T * 8 + k * 1.3 + s) * .12 * k / 5) * u, (.4 + k * .72) * u]);
      paint(ribbon(R, .45 * u, .8 * u), { wash: PAL.sky, washOp: 230, fill: '#FFFFFF', fillOp: 70, ink: PAL.ink, sw: sw * .45 });
      for (let k = 0; k < 2; k++) {
        const ph = frac(T * 1.8 + k * .5 + (s > 0 ? .25 : 0)), p = arcPt([s * .9 * u, .2 * u], [s * 3.6 * u, 1.8 * u], 1.6 * u, ph);
        paint(ellPts(p[0], p[1], .22 * u * (1 - ph * .5), .3 * u * (1 - ph * .5), 8), { wash: PAL.sky, ink: PAL.ink, sw: sw * .35 });
      }
      break;
    }
    case 'squeeze': lineEye([[-.55 * -s, -.7], [.55 * -s, 0], [-.55 * -s, .7]], 1.3, 0); break;   // > <
    case 'shine':
      paint(ellPts(lx * .6, ly * .6, u * .78, u * 1.12, 16), { wash: PAL.ink, ink: null });
      paint(ellPts(lx * .6 - .25 * u, ly * .6 - .45 * u, u * .3, u * .38, 10), { wash: PAL.cream, ink: null });
      paint(ellPts(lx * .6 + .25 * u, ly * .6 + .45 * u, u * .14, u * .14, 8), { wash: PAL.cream, ink: null });
      break;
    case 'scared':
      paint(ellPts(0, 0, u * .95, u * 1.15, 16), { wash: PAL.cream, ink: PAL.ink, sw: sw * .6 });
      paint(ellPts((o.lookX || 0) * u * .3 + Math.sin(T * 40) * .04 * u, .1 * u, u * .3, u * .4, 10), { wash: PAL.ink, ink: null });
      break;
    case 'blank': paint(ellPts(0, 0, u * .8, u * 1.05, 14), { wash: PAL.cream, ink: PAL.ink, sw: sw * .7 }); break;
    case 'spark':
      paint(ellPts(0, 0, u * 1.5, u * 1.5, 18), { fill: PAL.ochre, fillOp: 90, bleed: .3, ink: null });
      paint(starPts(0, 0, u * 1.35 * (1 + .12 * Math.sin(T * 14))), { wash: PAL.cream, fill: PAL.ochre, fillOp: 80, ink: PAL.ink, sw: sw * .55 });
      break;
    case 'red':
      paint(ellPts(0, 0, u * 1.7, u * 1.7, 18), { fill: '#E0283F', fillOp: 110, bleed: .35, ink: null });
      paint(rectPts(-.6 * u, -u, 1.2 * u, 2 * u, u * .05), { wash: '#FF2F4A', ink: PAL.ink, sw: sw * .5 });
      break;
    case 'heart': paint(heartPts(0, .1 * u, u * .9 * (1 + .1 * pulse(T))), { wash: '#E2476E', ink: PAL.ink, sw: sw * .5 }); break;
    case 'x': lineEye([[-.8, -.8], [.8, .8]], 1, 0); lineEye([[.8, -.8], [-.8, .8]], 1, 0); break;
    case 'swirl': {
      const sp = []; for (let k = 0; k < 16; k++) { const a = k * .7 + T * 6 * s, r = k * .06 * u; sp.push([Math.cos(a) * r, Math.sin(a) * r]); }
      inkLine(sp, sw * .6, PAL.ink, 'inkfine', .6); break;
    }
    case 'dot': paint(ellPts(lx * .5, ly * .5, u * .45, u * .55, 12), { wash: PAL.ink, ink: null }); break;
    default: slit(1, 2);
  }
 }
 // ---------- mouths ----------
 // o, O, smile, grin, flat, wobble, cat, frown, smirk, laugh, open, wail, teeth, tongue, pout, yawn
 function mouth(u, m, sw) {
  if (!m) return;
  const P = pts => pts.map(([a, b]) => [a * u, b * u]), dark = '#4A1F2A';
  const line = (pts, w = .8, c = .6) => inkLine(P(pts), sw * w, PAL.ink, 'ink', c);
  switch (m) {
    case 'o': paint(ellPts(0, -4.3 * u, u * .45, u * .5, 12), { wash: PAL.ink, ink: null }); break;
    case 'O': paint(ellPts(0, -4.1 * u, u * .8, u * .95, 14), { wash: dark, ink: PAL.ink, sw: sw * .6 }); break;
    case 'smile': line([[-.8, -4.6], [0, -4.1], [.8, -4.6]]); break;
    case 'frown': line([[-.8, -4.1], [0, -4.6], [.8, -4.1]]); break;
    case 'grin': paint(P([[-1.3, -4.8], [1.3, -4.8], [.9, -3.9], [-.9, -3.9]]), { wash: dark, ink: PAL.ink, sw: sw * .6, curv: .3 }); break;
    case 'flat': line([[-.7, -4.4], [.7, -4.4]], .8, 0); break;
    case 'wobble': line([[-1, -4.4], [-.5, -4.7], [0, -4.4], [.5, -4.7], [1, -4.4]], .7, .3); break;
    case 'cat': line([[-.9, -4.5], [-.45, -4.1], [0, -4.5], [.45, -4.1], [.9, -4.5]], .7, .5); break;
    case 'smirk': line([[-.8, -4.35], [.2, -4.3], [.9, -4.75]], .8, .5); break;
    case 'laugh':
      paint(P([[-1.4, -4.9], [1.4, -4.9], [1, -4], [0, -3.4], [-1, -4]]), { wash: dark, ink: PAL.ink, sw: sw * .6, curv: .4 });
      paint(ellPts(0, -3.85 * u, .7 * u, .32 * u, 12), { wash: PAL.rose, ink: null }); break;
    case 'open':
      paint(ellPts(0, -4.25 * u, u * .75, u * .6, 14), { wash: dark, ink: PAL.ink, sw: sw * .6 });
      paint(ellPts(0, -3.95 * u, u * .45, u * .2, 10), { wash: PAL.rose, ink: null }); break;
    case 'wail': {
      const w = Math.sin(T * 30) * .06;
      paint(P([[-1.5, -4.5 + w], [-.5, -4.9], [.5, -4.9 - w], [1.5, -4.5], [1.2, -3.3], [-1.2, -3.3]]), { wash: dark, ink: PAL.ink, sw: sw * .6, curv: .3 });
      paint(ellPts(0, -3.6 * u, .8 * u, .25 * u, 12), { wash: PAL.rose, ink: null }); break;
    }
    case 'teeth':
      paint(rectPts(-1.3 * u, -4.85 * u, 2.6 * u, .95 * u, u * .04), { wash: PAL.cream, ink: PAL.ink, sw: sw * .6 });
      line([[-1.25, -4.38], [1.25, -4.38]], .4, 0);
      for (const tx of [-.65, 0, .65]) line([[tx, -4.8], [tx, -3.95]], .35, 0);
      break;
    case 'tongue':
      paint(P([[.05, -4.3], [.75, -4.3], [.72, -3.75], [.4, -3.55], [.08, -3.75]]), { wash: PAL.rose, ink: PAL.ink, sw: sw * .5, curv: .5 });
      line([[-.8, -4.6], [0, -4.2], [.8, -4.5]]); break;
    case 'pout': line([[-.45, -4.2], [0, -4.5], [.45, -4.2]], 1, .6); line([[-.25, -4.0], [0, -3.9], [.25, -4.0]], .6, .6); break;
    case 'yawn':
      paint(ellPts(0, -4.1 * u, u * .6, u * 1.05, 14), { wash: dark, ink: PAL.ink, sw: sw * .6 });
      paint(ellPts(0, -3.45 * u, u * .38, u * .25, 10), { wash: PAL.rose, ink: null }); break;
  }
 }
 // ---------- hats ----------
 // party, hard, crown, halo, wizard, hood, top, fedora, band, sweatband, beanie, bow, flower, headphones, cat (ears; the
 // whiskers show in the front and 3/4 views), plus face pieces for the front and 3/4 views: masq, mask, bowtie
 function hat(u, h, sw) {
  if (!h || h === 'mask' || h === 'masq' || h === 'bowtie') return;
  const P = pts => pts.map(([a, b]) => [a * u, b * u]);
  if (h === 'party') {
    paint(P([[-1.8, -7.9], [0, -12.8], [1.8, -7.9]]), { wash: PAL.rose, fill: PAL.violet, fillOp: 50, ink: PAL.ink, sw: sw * .8 });
    paint(ellPts(0, -12.8 * u, u * .75, u * .75, 12), { wash: PAL.ochre, ink: PAL.ink, sw: sw * .6 });
  } else if (h === 'hard') {
    const d = []; for (let i = 0; i <= 12; i++) { const a = Math.PI + i / 12 * Math.PI; d.push([Math.cos(a) * 3.5 * u, -8 * u + Math.sin(a) * 3.3 * u]); }
    paint(d, { wash: '#F2C53D', ink: PAL.ink, sw: sw * .8 });
    paint(rectPts(-4.9 * u, -8.6 * u, 9.8 * u, .9 * u), { wash: '#F2C53D', ink: PAL.ink, sw: sw * .8 });
  } else if (h === 'crown') {
    paint(P([[-3, -7.9], [-3, -10.8], [-1.5, -9.3], [0, -11.2], [1.5, -9.3], [3, -10.8], [3, -7.9]]), { wash: '#F2C53D', fill: PAL.ochre, fillOp: 90, ink: PAL.ink, sw: sw * .8 });
    for (const gx of [-1.5, 0, 1.5]) paint(ellPts(gx * u, -8.7 * u, u * .3, u * .3, 8), { wash: gx ? PAL.teal : PAL.rose, ink: null });
  } else if (h === 'halo') {
    brush.noFill(); brush.noWash(); brush.noHatch(); brush.set('ink', PAL.ochre, sw * 1.4);
    brush.beginShape(0); for (const p of ellPts(0, -10.4 * u, 3.2 * u, .8 * u, 20)) brush.vertex(p[0], p[1]); brush.endShape(true);
  } else if (h === 'wizard' || h === 'hood') {
    paint(P([[-3.9, -7.9], [.9, -15], [3.9, -7.9]]), { wash: h === 'hood' ? PAL.violet : PAL.indigo, fill: PAL.violet, fillOp: 80, ink: PAL.ink, sw: sw * .8 });
    paint(starPts(.2 * u, -10.6 * u, u * .9, .4, 5), { wash: PAL.ochre, ink: null });
  } else if (h === 'top') {
    paint(rectPts(-2.6 * u, -12.5 * u, 5.2 * u, 4.3 * u), { wash: PAL.ink, ink: null });
    paint(rectPts(-2.6 * u, -9.4 * u, 5.2 * u, .8 * u), { wash: '#C8324A', ink: null });
    paint(rectPts(-3.9 * u, -8.6 * u, 7.8 * u, .8 * u), { wash: PAL.ink, ink: null });
  } else if (h === 'fedora') {
    paint(P([[-2.8, -8.3], [-2.3, -10.8], [0, -10.2], [2.3, -10.8], [2.8, -8.3]]), { wash: '#3B3550', ink: PAL.ink, sw: sw * .8, curv: .3 });
    paint(rectPts(-2.8 * u, -9.2 * u, 5.6 * u, .8 * u), { wash: '#C8324A', ink: null });
    paint(ellPts(0, -8.2 * u, 4.6 * u, .6 * u, 20), { wash: '#3B3550', ink: PAL.ink, sw: sw * .8 });
  } else if (h === 'band' || h === 'sweatband') {
    paint(rectPts(-5.1 * u, -8.2 * u, 10.2 * u, .95 * u), { wash: h === 'band' ? '#D8394E' : PAL.cream, ink: PAL.ink, sw: sw * .5 });
    if (h === 'sweatband') for (let i = 0; i < 4; i++) inkLine([[-4 * u + i * 2.6 * u, -8.1 * u], [-3.6 * u + i * 2.6 * u, -7.4 * u]], sw * .4, '#D8394E', 'inkfine', 0);
  } else if (h === 'beanie') {
    const d = []; for (let i = 0; i <= 12; i++) { const a = Math.PI + i / 12 * Math.PI; d.push([Math.cos(a) * 3.9 * u, -8.4 * u + Math.sin(a) * 2.6 * u]); }
    paint(d, { wash: PAL.teal, fill: PAL.sky, fillOp: 60, ink: PAL.ink, sw: sw * .8 });
    paint(rectPts(-4.2 * u, -8.9 * u, 8.4 * u, 1.1 * u), { wash: mixCol(PAL.teal, PAL.ink, .2), ink: PAL.ink, sw: sw * .7 });
    paint(ellPts(0, -11.2 * u, .8 * u, .8 * u, 12), { wash: PAL.cream, ink: PAL.ink, sw: sw * .6 });
  } else if (h === 'bow') {
    for (const s of [-1, 1]) paint(P([[2.6, -8.1], [2.6 + s * 1.7, -9.3], [2.6 + s * 1.7, -7.1]]), { wash: PAL.rose, fill: '#E2476E', fillOp: 70, ink: PAL.ink, sw: sw * .6, curv: .3 });
    paint(ellPts(2.6 * u, -8.2 * u, .45 * u, .45 * u, 10), { wash: '#E2476E', ink: PAL.ink, sw: sw * .5 });
  } else if (h === 'flower') {
    const fx = -2.6 * u, fy = -8.6 * u;
    inkLine([[fx, fy], [fx + .3 * u, -7.9 * u]], sw * .6, PAL.sap, 'ink', 0);
    for (let i = 0; i < 5; i++) { const a = i / 5 * TAU + .3; paint(ellPts(fx + Math.cos(a) * .7 * u, fy + Math.sin(a) * .7 * u, .55 * u, .55 * u, 10), { wash: PAL.cream, ink: PAL.ink, sw: sw * .4 }); }
    paint(ellPts(fx, fy, .45 * u, .45 * u, 10), { wash: PAL.ochre, ink: PAL.ink, sw: sw * .4 });
  } else if (h === 'headphones') {
    inkLine(P([[-5.1, -5.8], [-4.6, -9.4], [0, -10.6], [4.6, -9.4], [5.1, -5.8]]), sw * 2.4, PAL.ink, 'ink', .6);
    for (const s of [-1, 1]) paint(rrPts((s < 0 ? -6.1 : 4.6) * u, -7.4 * u, 1.5 * u, 2.8 * u, .6 * u), { wash: PAL.violet, fill: PAL.rose, fillOp: 50, ink: PAL.ink, sw: sw * .7 });
  } else if (h === 'cat') {
    for (const s of [-1, 1]) {
      paint([[s * 4.9 * u, -7.9 * u], [s * 4.3 * u, -11 * u], [s * 1.9 * u, -7.9 * u]], { wash: PAL.clay, ink: PAL.ink, sw: sw * .8 });
      paint([[s * 4.2 * u, -8.1 * u], [s * 4 * u, -10 * u], [s * 2.8 * u, -8.1 * u]], { wash: PAL.rose, ink: null });
    }
  }
 }
 function faceHat(u, h, sw, sides) {
  if (h === 'cat') {
    for (const s of sides) for (const k of [-.3, .3]) inkLine([[s * 4 * u, -4.7 * u + k * u], [s * 6.4 * u, -4.9 * u + k * 2 * u]], sw * .4, PAL.ink, 'inkfine', 0);
  } else if (h === 'masq') {
    paint([[-5.2, -7.3], [-2.4, -8], [0, -7.1], [2.4, -8], [5.2, -7.3], [4.2, -5.2], [1.4, -5.3], [0, -6], [-1.4, -5.3], [-4.2, -5.2]].map(([a, b]) => [a * u, b * u]), { wash: PAL.violet, fill: PAL.rose, fillOp: 60, ink: PAL.ink, sw: sw * .7, curv: .3 });
    for (const ex of [-2.5, 2.5]) paint(ellPts(ex * u, -6.4 * u, 1.1 * u, .6 * u, 12), { wash: PAL.ink, ink: null });
  } else if (h === 'bowtie') {
    for (const s of [-1, 1]) paint([[0, -2.9 * u], [s * 1.5 * u, -3.6 * u], [s * 1.5 * u, -2.1 * u]], { wash: PAL.rose, ink: PAL.ink, sw: sw * .5 });
  }
 }
 // ---------- emotes ----------
 // Painted reaction marks, never lettering: ! ? !! !? zzz sweat spark heart hearts anger steam bulb dots scribble
 // music swirl stars cloud. k = 0..1 pop-in progress (with overshoot); age = seconds since it appeared (drives the
 // looping ones). Emotes in EMOTE_TOP sit over the head; the rest sit by its top corner.
 const EMOTE_TOP = ['steam', 'stars', 'cloud', 'bulb', 'scribble'];
 function emote(kind, x, y, s, k = 1, age = T) {
  const p = backOut(k); if (p < .02) return;
  const sw = clamp(s / 15, .4, 2), P = pts => pts.map(([a, b]) => [a * s, b * s]);
  const dot = (dx, col) => paint(ellPts(dx, 1.25 * s, .42 * s, .42 * s, 12), { wash: col, ink: PAL.ink, sw: sw * .7 });
  const bang = (dx, col) => {
    push(); translate(dx, 0); rotate(.1 + .08 * Math.sin(age * 16) * Math.exp(-age * 3));
    paint(P([[-.62, -2.3], [.62, -2.3], [.22, .45], [-.22, .45]]), { wash: col, fill: PAL.cream, fillOp: 70, ink: PAL.ink, sw: sw * .8, curv: .25 }); dot(0, col);
    pop();
  };
  const quest = (dx, col) => {
    push(); translate(dx, 0); rotate(-.08 + .08 * Math.sin(age * 12) * Math.exp(-age * 3));
    paint(ribbon(P([[-1, -1.3], [-.55, -2.15], [.35, -2.3], [1, -1.6], [.7, -.75], [.05, -.3], [0, .4]]), .75 * s, .5 * s), { wash: col, fill: PAL.cream, fillOp: 60, ink: PAL.ink, sw: sw * .8 });
    dot(0, col); pop();
  };
  push(); translate(x, y); scale(p);
  switch (kind) {
    case '!': bang(0, PAL.ochre); break;
    case '?': quest(0, PAL.sky); break;
    case '!!': bang(-.8 * s, PAL.ochre); bang(.9 * s, PAL.ochre); break;
    case '!?': bang(-.9 * s, PAL.ochre); quest(1 * s, PAL.sky); break;
    case 'zzz': for (let i = 0; i < 3; i++) {   // painted Z shapes drifting up and away
      const ph = frac(age * .4 + i / 3), a = Math.sin(ph * Math.PI), zs = (.8 + ph * .7) * s * Math.min(1, a * 1.6);
      if (a < .12) continue;
      const zx = ph * 2.6 * s, zy = -ph * 4.2 * s, Z = [[-.6, -.6], [.6, -.6], [.6, -.28], [-.12, .3], [.6, .3], [.6, .6], [-.6, .6], [-.6, .28], [.12, -.3], [-.6, -.3]];
      push(); translate(zx, zy); rotate(-.15 + .1 * Math.sin(age * 2 + i));
      paint(Z.map(([a, b]) => [a * zs, b * zs]), { wash: PAL.cream, fill: PAL.sky, fillOp: 70, ink: PAL.ink, sw: sw * .7 });
      pop();
    } break;
    case 'sweat': for (const [dx, dy, r] of [[0, 0, 1], [1.6, 1.4, .7]])
      paint(P([[dx, dy - 1.6 * r], [dx + .9 * r, dy + .2], [dx, dy + .9 * r], [dx - .9 * r, dy + .2]]), { wash: PAL.sky, fill: '#FFFFFF', fillOp: 60, ink: PAL.ink, sw: sw * .6, curv: .7 });
      break;
    case 'spark': {
      const tw = 1 + .15 * Math.sin(age * 12);
      paint(starPts(0, 0, 1.6 * s * tw), { wash: PAL.cream, fill: PAL.ochre, fillOp: 80, ink: PAL.ink, sw: sw * .5 });
      paint(starPts(1.9 * s, 1.2 * s, .8 * s / tw), { wash: PAL.ochre, ink: PAL.ink, sw: sw * .4 });
      break;
    }
    case 'heart': paint(heartPts(0, 0, s * 1.8 * (1 + .12 * pulse(age + OFF))), { wash: '#E2476E', fill: PAL.rose, fillOp: 90, ink: PAL.ink, sw: sw * .6 }); break;
    case 'hearts': for (let i = 0; i < 3; i++) {
      const ph = frac(age * .55 + i / 3), a = Math.sin(ph * Math.PI); if (a < .1) continue;
      paint(heartPts((Math.sin(ph * 6 + i * 2) * .7 + i * .7 - .7) * s, -ph * 3.8 * s, s * (.5 + .6 * a)), { wash: '#E2476E', fill: PAL.rose, fillOp: 90, ink: PAL.ink, sw: sw * .5 });
    } break;
    case 'anger': {   // the comic "vein pop": four curved strokes, each bowed in toward the centre
      const b = 1 + .15 * pulse(age + OFF, 8);
      for (let i = 0; i < 4; i++) { push(); rotate(i * Math.PI / 2 + Math.PI / 4); scale(b); inkLine(P([140, 160, 180, 200, 220].map(d => [2.1 + 1.3 * Math.cos(d * Math.PI / 180), 1.3 * Math.sin(d * Math.PI / 180)])), sw * 1.1, '#D8394E', 'ink', .6); pop(); }
      break;
    }
    case 'steam': for (const sd of [-1, 1]) for (let j = 0; j < 2; j++) {
      const ph = frac(age / .7 + j * .5 + (sd > 0 ? .25 : 0)), r = (.55 + ph * .9) * s, cx = sd * (3.2 + ph * 1.8) * s, cy = (1 - ph * 3) * s;
      const puff = []; for (let i = 0; i < 18; i++) { const a = i / 18 * TAU, bump = 1 + .22 * Math.abs(Math.sin(a * 2.5)); puff.push([cx + Math.cos(a) * r * bump, cy + Math.sin(a) * r * .8 * bump]); }
      paint(puff, { wash: PAL.cream, washOp: 255 * (1 - ph * .8), ink: ph < .6 ? PAL.ink : null, sw: sw * .5 });
    } break;
    case 'bulb': {
      const gl = .5 + .5 * Math.sin(age * 10);
      glow(0, -1.4 * s, 4.5 * s, '#FFD27A', .75 + .25 * gl);
      for (let i = 0; i < 7; i++) { const a = -Math.PI / 2 + (i - 3) * .45, r0 = 1.6 * s, r1 = (2.2 + .4 * gl) * s; inkLine([[Math.cos(a) * r0, -1.4 * s + Math.sin(a) * r0], [Math.cos(a) * r1, -1.4 * s + Math.sin(a) * r1]], sw * .8, PAL.ochre, 'ink', 0); }
      paint(ellPts(0, -1.4 * s, 1.15 * s, 1.2 * s, 16), { wash: '#FFE68A', fill: PAL.cream, fillOp: 90, ink: PAL.ink, sw: sw * .7 });
      paint(rectPts(-.5 * s, -.3 * s, s, .8 * s), { wash: '#9A93A8', ink: PAL.ink, sw: sw * .6 });
      break;
    }
    case 'dots': for (let i = 0; i < 3; i++) {
      const ph = frac(age / 1.8), q = backOut(clamp((ph - i * .22) * 6)); if (q < .02) continue;
      paint(ellPts((i - 1) * 1.3 * s, 0, .42 * s * q, .42 * s * q, 10), { wash: PAL.ink, ink: null });
    } break;
    case 'scribble': {
      const pts = []; for (let i = 0; i < 34; i++) { const a = i * .95, r = (1.1 + .5 * Math.sin(i * 1.7)) * s; pts.push([Math.cos(a) * r * 1.5 + jit(.2 * s), Math.sin(a) * r * .8 + jit(.2 * s)]); }
      inkLine(pts, sw * .8, PAL.ink, 'ink', .7); break;
    }
    case 'music': {
      const b = Math.sin(age * 5) * .3 * s;
      push(); translate(0, b); rotate(.1 * Math.sin(age * 5));
      paint(ellPts(0, 1.2 * s, .7 * s, .5 * s, 12, 0, -.3), { wash: PAL.ink, ink: null });
      inkLine(P([[.6, 1.1], [.6, -1.6], [1.6, -1]]), sw * .8, PAL.ink, 'ink', 0);
      pop();
      const b2 = Math.sin(age * 5 + 2) * .3 * s;
      paint(ellPts(2.2 * s, 2.2 * s + b2, .45 * s, .33 * s, 10, 0, -.3), { wash: PAL.ink, ink: null });
      inkLine([[2.6 * s, 2.15 * s + b2], [2.6 * s, .6 * s + b2]], sw * .6, PAL.ink, 'ink', 0);
      break;
    }
    case 'swirl': {
      const sp = []; for (let i = 0; i < 18; i++) { const a = i * .6 + age * 5, r = i * .09 * s; sp.push([Math.cos(a) * r, Math.sin(a) * r]); }
      inkLine(sp, sw * .7, PAL.violet, 'inkfine', .6); break;
    }
    case 'stars': for (let i = 0; i < 3; i++) {   // little stars circling the head
      const a = age * 5 + i * TAU / 3, d = .75 + .25 * Math.sin(a);
      paint(starPts(Math.cos(a) * 4.2 * s, Math.sin(a) * s, .75 * s * d, .45, 5, age * 3), { wash: PAL.ochre, fill: PAL.cream, fillOp: 60, ink: PAL.ink, sw: sw * .5 });
    } break;
    case 'cloud': {   // a little rain cloud of its own
      const bob = Math.sin(age * 2) * .15 * s, c = [];
      for (let i = 0; i < 40; i++) {
        const a = i / 40 * TAU, up = Math.sin(a) < 0, r = up ? 1 + .38 * Math.pow(Math.abs(Math.sin(a * 3)), .6) : 1;
        c.push([Math.cos(a) * 2.8 * s * (up ? r * .92 : 1), bob - .2 * s + Math.sin(a) * (up ? 1.35 : .7) * s * r]);
      }
      for (let i = 0; i < 6; i++) { const ph = frac(age * 2.4 + hash(i)), rx = (-2 + i * .8) * s, ry = (.7 + ph * 2) * s; inkLine([[rx, ry], [rx - .12 * s, ry + .7 * s]], sw * 1.1, mixCol(PAL.sky, PAL.indigo, .3), 'ink', 0); }
      paint(c, { wash: '#A3A8C4', fill: PAL.indigo, fillOp: 70, bleed: .1, ink: PAL.ink, sw: sw * .8, curv: .4 });
      break;
    }
  }
  pop();
 }
 // Heart outline points, centred at (cx, cy), about 2r wide.
 function heartPts(cx, cy, r, n = 22) {
  const p = []; for (let i = 0; i < n; i++) { const a = i / n * TAU; p.push([cx + 16 * Math.pow(Math.sin(a), 3) * r / 16, cy - (13 * Math.cos(a) - 5 * Math.cos(2 * a) - 2 * Math.cos(3 * a) - Math.cos(4 * a)) * r / 16]); } return p;
 }
 // ---------- emotions ----------
 // Each emotion is a face AND a way of moving. body(t) returns pose offsets for clawd(), and every one is alive: it
 // moves on its own, at its own energy, locked to the beat (PROJECT.bpm). take = how big the reaction is when Clawd
 // switches INTO this emotion. fade = the emote is a one-off that fades out instead of staying.
 const _b = t => { const bp = bpOf(t), s1 = Math.sin(bp * Math.PI); return { bp, s1, ab: Math.abs(s1), hit: pulse(t), s2: Math.sin(bp * TAU), f: frac(bp) }; };
 const EMO = {
  neutral:    { eyes: 'normal', take: .3, body: t => { const b = _b(t); return { dy: -.25 * b.ab, sq: .03 * b.hit, aL: .15 + .05 * b.s1, aR: .15 - .05 * b.s1 }; } },
  happy:      { eyes: 'happy', mouth: 'smile', blush: .3, take: .6, body: t => { const b = _b(t); return { dy: -1.2 * b.ab, sq: .1 * b.hit, aL: .4 + .4 * b.s1, aR: .4 - .4 * b.s1 }; } },
  excited:    { eyes: 'wide', mouth: 'open', emote: 'spark', take: 1, body: t => { const b = _b(t), h = Math.abs(b.s2); return { dy: -2.4 * h, sq: .16 * pulse2(t) - .06 * h, aL: 1 + .5 * Math.sin(b.bp * TAU * 2), aR: 1 - .5 * Math.sin(b.bp * TAU * 2) }; } },
  laugh:      { eyes: 'squeeze', mouth: 'laugh', blush: .45, take: .8, body: t => { const c = Math.abs(Math.sin(t * TAU * 5)); return { dy: -.45 * c, sq: .08 * c - .04, rot: -.07 + .03 * Math.sin(t * TAU * 5), aL: -.35 + .12 * c, aR: -.35 + .12 * c }; } },
  love:       { eyes: 'heart', mouth: 'cat', blush: .8, tint: 'rosy', tintK: .5, emote: 'hearts', take: .7, body: t => { const b = _b(t), s = Math.sin(b.bp * Math.PI / 2); return { rot: .08 * s, dx: .5 * s, dy: -.6 * b.ab, sq: .05 * b.hit, aL: -.1 + .15 * b.s1, aR: -.1 - .15 * b.s1 }; } },
  shy:        { eyes: 'look', mouth: 'wobble', blush: 1, take: .3, body: t => { const b = _b(t), s = Math.sin(b.bp * Math.PI / 2); return { lookX: -.7, lookY: .8, sq: .06, rot: -.05 + .02 * s, dx: .15 * s, aL: -.55 + .15 * Math.sin(t * TAU * 1.5), aR: -.6 - .12 * Math.sin(t * TAU * 1.5) }; } },
  proud:      { eyes: 'closed', mouth: 'smile', tint: 'gold', tintK: .3, emote: 'spark', take: .5, body: t => { const b = _b(t); return { sq: -.1 - .03 * b.ab, dy: -.3 * b.hit, aL: -.9, aR: -.9, rot: .02 * b.s1 }; } },
  smug:       { eyes: 'narrow', mouth: 'smirk', take: .4, body: t => { const b = _b(t), s = Math.sin(b.bp * Math.PI / 2); return { lookX: .4, rot: -.06 + .03 * s, dy: -.2 * b.ab, aL: -.5, aR: .5 + .15 * s }; } },
  relieved:   { eyes: 'closed', mouth: 'smile', emote: 'sweat', take: .4, body: t => { const b = _b(t), br = Math.sin(t * TAU * .35); return { sq: .05 + .05 * br, dy: -.15 * b.ab, aL: -.7 + .1 * br, aR: -.7 + .1 * br }; } },
  sad:        { eyes: 'sad', mouth: 'frown', tint: 'blue', tintK: .35, gloom: .35, emote: 'cloud', take: .3, body: t => { const b = _b(t), s = Math.sin(b.bp * Math.PI / 4); return { sq: .08 + .02 * s, rot: .03 * s, aL: -.75, aR: -.75, lookY: .5 }; } },
  cry:        { eyes: 'cry', mouth: 'wail', tint: 'blue', tintK: .2, take: .8, body: t => { const b = _b(t), sob = Math.sin(b.f * Math.PI) * Math.exp(-b.f * 2); return { sq: .14 * sob - .02, dy: -.7 * sob, aL: .9 + .15 * Math.sin(t * TAU * 6), aR: .9 - .15 * Math.sin(t * TAU * 6), rot: .03 * b.s1 }; } },
  angry:      { eyes: 'angry', mouth: 'teeth', tint: 'flush', tintK: .45, emote: 'anger', take: .8, body: t => { const b = _b(t); return { dx: .1 * Math.sin(t * TAU * 18), sq: .12 * b.hit, aL: -.3 + .1 * b.hit, aR: -.3 + .1 * b.hit }; } },
  furious:    { eyes: 'red', lid: .28, tint: 'flush', tintK: .85, emote: 'steam', take: 1.2, body: t => { const b = _b(t); return { dx: .22 * Math.sin(t * TAU * 20), rot: .025 * Math.sin(t * TAU * 13), sq: .2 * b.hit, dy: -.8 * Math.sin(b.f * Math.PI) * (1 - b.f), aL: 1 + .2 * Math.sin(t * TAU * 9), aR: 1 - .2 * Math.sin(t * TAU * 9) }; } },
  scared:     { eyes: 'scared', mouth: 'wobble', tint: 'pale', tintK: .6, emote: 'sweat', take: 1.1, body: t => ({ dx: .1 * Math.sin(t * TAU * 22), sq: -.06, aL: 1 + .08 * Math.sin(t * TAU * 17), aR: 1 + .08 * Math.sin(t * TAU * 19), lookX: .6 * Math.sign(Math.sin(t * 2.3)) }) },
  surprised:  { eyes: 'wide', mouth: 'O', emote: '!', fade: true, take: 1.3, body: t => { const b = _b(t); return { sq: -.12, dy: -.3 - .15 * b.ab, aL: 1.1 + .05 * b.s2, aR: 1.1 - .05 * b.s2 }; } },
  confused:   { eyes: ['narrow', 'wide'], mouth: 'wobble', emote: '?', take: .6, body: t => { const b = _b(t); return { rot: .1 * Math.sin(b.bp * Math.PI / 4), aL: .1, aR: 1.5 + .15 * Math.sin(t * TAU * 3), dy: -.15 * b.ab }; } },
  thinking:   { eyes: 'look', mouth: 'flat', emote: 'dots', take: .4, body: t => { const b = _b(t); return { lookX: .5, lookY: -.8, rot: .05, aR: .9, aL: -.3 + .25 * Math.sin(b.f * Math.PI), dy: -.1 * b.ab }; } },
  idea:       { eyes: 'shine', mouth: 'grin', emote: 'bulb', take: 1.1, body: t => { const b = _b(t); return { dy: -1 * b.ab, sq: -.05 + .1 * b.hit, aR: 1.55 + .1 * b.s2, aL: .2 + .2 * b.s1 }; } },
  determined: { eyes: 'determined', mouth: 'flat', take: .7, body: t => { const b = _b(t), p1 = Math.sin(b.f * Math.PI), p2 = Math.abs(Math.cos(b.f * Math.PI)); return { rot: .06, sq: -.04 + .06 * b.hit, dy: -.3 * b.ab, aL: .1 + .7 * p1, aR: .1 + .7 * p2 }; } },
  sleepy:     { eyes: 'sleepy', mouth: 'o', emote: 'zzz', take: .2, body: t => { const br = Math.sin(t * TAU * .3); return { sq: .05 + .05 * br, rot: .06 * Math.sin(t * .8), aL: -.6, aR: -.6 }; } },
  bored:      { eyes: 'narrow', mouth: 'flat', take: .2, body: t => { const f = frac(bpOf(t) / 4), sigh = f < .3 ? ease(f / .3) : 1 - ease((f - .3) / .7); return { lookX: -.3, lookY: .4, sq: .08 - .14 * sigh, rot: -.04, aL: -.85 + .05 * Math.sin(t * 2), aR: -.85 - .05 * Math.sin(t * 2) }; } },
  nervous:    { eyes: 'look', mouth: 'wobble', tint: 'pale', tintK: .2, emote: 'sweat', take: .5, body: t => { const b = _b(t); return { lookX: beatN(t) % 2 ? .8 : -.8, dx: .3 * b.s1, sq: .04, aL: -.1 + .2 * Math.sin(t * TAU * 5), aR: -.1 + .2 * Math.sin(t * TAU * 5 + 1) }; } },
  suspicious: { eyes: 'narrow', mouth: 'flat', take: .4, body: t => { const s = Math.sin(t * TAU * .25); return { lookX: s, rot: -.08 * s, dx: .4 * s, sq: .04, aL: -.4, aR: -.4 }; } },
  disgusted:  { eyes: 'squeeze', mouth: 'wobble', tint: 'green', tintK: .5, take: .8, body: t => { const a = frac(bpOf(t) / 2) * BEAT * 2, sh = Math.exp(-a * 6) * Math.sin(a * 45); return { rot: -.1, dx: -.3 + .15 * sh, sq: .05, aL: .7 + .2 * sh, aR: .7 - .2 * sh }; } },
  dizzy:      { eyes: 'swirl', mouth: 'wobble', emote: 'stars', take: .7, body: t => { const a = t * TAU * .8; return { rot: .12 * Math.sin(a), dx: .7 * Math.sin(a), dy: -.3 * Math.abs(Math.cos(a)), aL: .3 + .6 * Math.sin(a * 1.3), aR: .3 - .6 * Math.sin(a * 1.3) }; } },
  cool:       { eyes: 'shades', mouth: 'smirk', emote: 'music', take: .4, body: t => { const b = _b(t); return { rot: .04 * b.hit, dy: -.35 * b.hit, sq: .06 * b.hit, aL: -.4, aR: .7 + .1 * b.s1 }; } },
  starstruck: { eyes: 'spark', mouth: 'open', tint: 'gold', tintK: .3, take: 1, body: t => { const b = _b(t), h = Math.abs(b.s2); return { dy: -1.6 * h, sq: .1 * pulse2(t), aL: 1.1 + .35 * Math.sin(b.bp * TAU * 2), aR: 1.1 + .35 * Math.sin(b.bp * TAU * 2) }; } },
  ko:         { eyes: 'x', mouth: 'wobble', tint: 'pale', tintK: .3, emote: 'stars', take: 1, body: t => ({ sq: .28 + .02 * Math.sin(t * 3), rot: .12, aL: -1, aR: -.9 }) },
  playful:    { eyes: 'wink', mouth: 'tongue', take: .6, body: t => { const b = _b(t), side = beatN(t) % 2 ? 1 : -1, k = lerp(-side, side, easeOut(clamp(b.f * 3))); return { dx: .8 * k, dy: -1.4 * b.ab, rot: .1 * k, sq: .1 * b.hit, aL: .65 + .55 * k, aR: .65 - .55 * k }; } },
  mischief:   { eyes: 'narrow', mouth: 'grin', gloom: .3, take: .5, body: t => { const r = Math.sin(t * TAU * 4); return { lookX: .3, sq: .07, rot: .04, aL: -.05 + .15 * r, aR: -.05 - .15 * r, dy: -.1 * Math.abs(r) }; } },
  hopeful:    { eyes: 'shine', mouth: 'cat', blush: .35, take: .5, body: t => { const b = _b(t); return { sq: -.06 - .02 * b.ab, dy: -.25 * b.ab, lookY: -.4, aL: .5 + .05 * b.s1, aR: .5 - .05 * b.s1, rot: .03 * Math.sin(b.bp * Math.PI / 2) }; } },
 };
 // One emotion, alive at time t: face, colour and body motion together. Spread it into clawd():
 //   clawd(x, y, u, feel('happy', t))       clawd(x, y, u, { ...feel('sad', t), view: 'q', hat: 'beanie' })
 function feel(name, t, over = {}) {
  const E = EMO[name] || EMO.neutral;
  return { eyes: E.eyes, mouth: E.mouth, tint: E.tint, tintK: E.tintK ?? 1, blush: E.blush || 0, gloom: E.gloom || 0,
           lid: E.lid || 0, emote: E.emote, ...(E.body ? E.body(t) : {}), ...over };
 }
 // An emotion timeline with ACTED changes: keys = [[t0, 'neutral'], [t1, 'surprised'], [t2, 'happy', { emote: 'music' }]].
 // Around each change the eyes squeeze shut and the body squashes just before (anticipation), and the face swaps
 // under the squint. Then a take fires (a squash-stretch the size of the new emotion's `take`), the body settles into
 // its new motion with overshoot, colour, blush and gloom cross-fade, and the new emote pops in. o.take scales every take.
 // Spread the result into clawd() and add any other pose: clawd(x, y, u, { ...emotions(t, keys), view: 'q' }).
 function emotions(t, keys, o = {}) {
  let i = 0; while (i + 1 < keys.length && t >= keys[i + 1][0]) i++;
  const [tc, name, over] = keys[i], age = t - tc, cur = feel(name, t, over);
  const tn = i + 1 < keys.length ? keys[i + 1][0] : Infinity, tkS = o.take ?? 1;
  const E = EMO[name] || EMO.neutral;
  let squint = cur.squint || 0;
  if (tn - t < .1) squint = Math.max(squint, 1 - (tn - t) / .1);
  if (i > 0 && age < .14) squint = Math.max(squint, 1 - age / .14);
  const prev = i > 0 ? feel(keys[i - 1][1], t, keys[i - 1][2]) : null;
  if (prev && age < .5) {
    const base = { dy: 0, sq: 0, aL: .2, aR: .2, rot: 0, dx: 0, lookX: 0, lookY: 0 };
    const k = backOut(seg(age, 0, .4)), kc = ease(seg(age, 0, .3));
    for (const f in base) cur[f] = lerp(prev[f] ?? base[f], cur[f] ?? base[f], k);
    const a = tintCols(prev), b = tintCols(cur);
    cur.col = mixCol(a.col, b.col, kc); cur.dk = mixCol(a.dk, b.dk, kc); cur.lt = mixCol(a.lt, b.lt, kc); cur.tint = null;
    for (const f of ['blush', 'gloom', 'lid']) cur[f] = lerp(prev[f] || 0, cur[f] || 0, kc);
  }
  // takes: the one this key fires, plus the anticipation squash of the next one
  const t1 = prev ? take(t, tc, (E.take ?? .6) * tkS) : { sq: 0, dy: 0 };
  const En = i + 1 < keys.length ? EMO[keys[i + 1][1]] || EMO.neutral : null, t2 = En ? take(t, tn, (En.take ?? .6) * tkS) : { sq: 0, dy: 0 };
  cur.sq = (cur.sq || 0) + t1.sq + t2.sq; cur.dy = (cur.dy || 0) + t1.dy + t2.dy;
  cur.squint = squint;
  // the emote pops in after the swap (it carries on if the emote didn't change); one-off emotes fade out
  const same = prev && prev.emote === cur.emote;
  cur.emoteK = same ? 1 : seg(age, .06, .32) * (E.fade && !(over && over.emote) ? 1 - seg(age, 1.4, 1.8) : 1);
  cur.emoteAge = age;
  return cur;
 }
 // ---------- moves ----------
 // Beat-locked dances: bounce, hop, roof (arms up), sway, spin (a drawn spin through the key views, once a bar), wave,
 // walk, run, idle, stomp, shimmy, mix (changes every two bars). Returns pose offsets; spread into clawd().
 function move(style, t, seed = 0) {
  const bp = bpOf(t), bi = Math.floor(bp), bf = bp - bi, hit = Math.max(0, 1 - bf * 3.5), s1 = Math.sin(bp * Math.PI), ab = Math.abs(s1);
  const o = { dy: 0, sq: 0, aL: .2, aR: .2, rot: 0, walk: null, dx: 0 };
  if (style === 'mix') style = ['bounce', 'roof', 'sway', 'spin', 'hop', 'wave'][(Math.floor(bp / 8) + seed) % 6];
  switch (style) {
    case 'bounce': o.dy = -ab * 1.6; o.sq = hit * .12; o.aL = .4 + s1; o.aR = .4 - s1; break;
    case 'hop': o.dy = -ab * 4; o.sq = hit * .18; o.aL = o.aR = .3 + ab * 1.1; break;
    case 'roof': o.dy = -ab * 1.2; o.sq = hit * .1; o.aL = o.aR = 1.25 + .3 * Math.sin(bp * TAU); break;
    case 'sway': o.dx = s1 * 3; o.rot = s1 * .12; o.aL = .5 + .6 * s1; o.aR = .5 - .6 * s1; o.sq = hit * .08; break;
    case 'spin': {
      const ph = (((bi % 4) + 4) % 4 === 3) ? bf : 0;
      Object.assign(o, spinView(ph)); o.smear = ph > .1 && ph < .9 ? .5 : 0; o.smearDir = 0;
      o.dy = -Math.sin(ph * Math.PI) * 3 - ab; o.aL = o.aR = .6 + ph; o.sq = hit * .1; break;
    }
    case 'wave': o.dy = -ab; o.aL = 1.1 + .5 * Math.sin(bp * TAU * 2); o.aR = -.2; o.sq = hit * .08; break;
    case 'walk': o.walk = bp / 2; o.dy = -ab * .6; o.aL = .3 * s1; o.aR = -o.aL; break;
    case 'run': o.walk = bp * 1.5; o.dy = -Math.abs(Math.sin(bp * TAU)); o.aL = .8 * Math.sin(bp * TAU * 1.5); o.aR = -o.aL; o.rot = -.08; break;
    case 'idle': o.dy = -ab * .5; o.sq = hit * .05; break;
    case 'stomp': o.dy = -Math.max(0, Math.sin(bp * TAU)) * 1.4; o.sq = hit * .2; o.rot = (bi % 2 ? 1 : -1) * .06 * hit; o.aL = o.aR = -.3 + hit * .9; break;
    case 'shimmy': o.dx = Math.sin(bp * TAU * 2) * .6; o.rot = Math.sin(bp * TAU * 2) * .05; o.aL = .9 + .4 * Math.sin(bp * TAU * 2); o.aR = .9 - .4 * Math.sin(bp * TAU * 2); o.dy = -ab * .5; break;
  }
  return o;
 }
 function dancer(x, y, u, style, t, extra = {}) { clawd(x, y, u, { ...move(style, t, extra.seed || 0), ...extra }); }
@@ -1,5 +0,0 @@
 // config.js: project settings.
 //   duration: the video's length in seconds.
 //   bpm:      the rhythm that bounces, dances and pulse() follow. Clawd always moves to some beat; if the video has music,
 //             set this to the song's tempo, and set offset to the time in seconds of its first downbeat.
 const PROJECT = { duration: 11, bpm: 120, offset: 0 };
@@ -1,326 +0,0 @@
 // core.js: constants, helpers, paper, paint wrapper, compositing and render hooks.
 // Length and rhythm come from PROJECT in config.js.
 const W = 1920, H = 1080;
 const BPM = PROJECT.bpm, BEAT = 60 / BPM, OFF = PROJECT.offset || 0, BOIL = 12, DUR = PROJECT.duration;
 const TAU = Math.PI * 2;
 const PAL = {
  paper: '#F3EBDC', ink: '#2B2233', clay: '#D97757', clayDk: '#A84D33', clayLt: '#F2A283',
  night: '#1F2550', indigo: '#2F3C7A', rose: '#E27A92', ochre: '#E8AA38', sap: '#6E9F58',
  teal: '#3A9C98', violet: '#7B5CA8', cream: '#FFF5E2', sky: '#8EC3E6'
 };
 const clamp = (x, a = 0, b = 1) => Math.max(a, Math.min(b, x));
 const lerp = (a, b, x) => a + (b - a) * x;
 const ease = x => { x = clamp(x); return x * x * (3 - 2 * x); };
 const easeOut = x => 1 - Math.pow(1 - clamp(x), 3);
 const backOut = x => { x = clamp(x); const s = 1.9; return 1 + (s + 1) * Math.pow(x - 1, 3) + s * Math.pow(x - 1, 2); };
 const hash = i => { const x = Math.sin(i * 127.1 + 311.7) * 43758.5453; return x - Math.floor(x); };
 const bpOf = t => (t - OFF) / BEAT;
 // Seeded by the boil frame, so linework "boils" at BOIL fps like hand-drawn animation.
 const jit = a => (random() * 2 - 1) * a;
 // Each boil drawing holds for several frames, so whatever isn't moving must draw the same until the next one. But a moving
 // thing uses a different amount of randomness each frame, which shifts the stream for everything drawn after it and makes
 // that re-boil every frame (jitter). boilSeed(key) restarts the stream from the boil frame and a key (any string or
 // number) that's the same every frame: call it before each separate element. clawd() does this for itself and its parts.
 let BOILN = 0, CLAWD_N = 0;
 const boilSeed = key => { let h = 2166136261; for (const c of key + '|' + BOILN) h = Math.imul(h ^ c.charCodeAt(0), 16777619); randomSeed(h >>> 0); };
 // ---------- timing helpers (everything is a pure function of t; no state survives between frames) ----------
 const seg = (t, a, b) => clamp((t - a) / (b - a));                 // 0..1 progress of t through [a, b]
 const frac = x => x - Math.floor(x);
 const beatN = t => Math.floor(bpOf(t));                            // integer beat index
 const pulse = (t, k = 6) => Math.exp(-frac(bpOf(t)) * k);          // 1 exactly on each beat, decays after
 const pulse2 = (t, k = 6) => Math.exp(-frac(bpOf(t) * 2) * k);     // same on eighth notes
 const wob = (t, f = 1, ph = 0) => Math.sin((t * f + ph) * TAU);
 const easeIn = x => Math.pow(clamp(x), 3);
 const elasticOut = x => { x = clamp(x); return x === 0 || x === 1 ? x : Math.pow(2, -10 * x) * Math.sin((x * 10 - .75) * (TAU / 3)) + 1; };
 // keyframes: kf(t, [[t0, v0], [t1, v1], ...], easeFn). Values may be numbers or arrays of numbers.
 function kf(t, keys, e = ease) {
  if (t <= keys[0][0]) return keys[0][1];
  for (let i = 1; i < keys.length; i++) {
    if (t < keys[i][0]) {
      const [a, va] = keys[i - 1], [b, vb] = keys[i], k = e((t - a) / (b - a));
      return Array.isArray(va) ? va.map((v, j) => lerp(v, vb[j], k)) : lerp(va, vb, k);
    }
  }
  return keys[keys.length - 1][1];
 }
 // hex color mix
 function mixCol(a, b, k) {
  const pa = parseInt(a.slice(1), 16), pb = parseInt(b.slice(1), 16), c = i => Math.round(lerp((pa >> i) & 255, (pb >> i) & 255, clamp(k)));
  return '#' + ((1 << 24) + (c(16) << 16) + (c(8) << 8) + c(0)).toString(16).slice(1);
 }
 // small deterministic camera shake, changes at 24 fps
 const shakeXY = (t, amt) => { const f = Math.floor(t * 24); return [(hash(f * 1.7) - .5) * 2 * amt, (hash(f * 2.3 + 9) - .5) * 2 * amt]; };
 // ---------- motion principles, as pure functions of t ----------
 // Damped spring kicked at t0: 0 before, then a wobble that dies away. Use it for secondary motion and settles: a body
 // after landing, a hat that jiggles, a stack that sways, a tail that drags. k = damping, w = wobble speed (rad/s).
 const spring = (t, t0, k = 6, w = 18) => t < t0 ? 0 : Math.exp(-k * (t - t0)) * Math.sin(w * (t - t0));
 const ring = (t, evs, k = 6, w = 18) => evs.reduce((s, e) => s + spring(t, e, k, w), 0);    // one kick per event time
 // Hold each drawing for two frames (12 drawings a second), like hand-drawn animation "on twos". Wrap a shot's t in it.
 const onTwos = t => Math.floor(t * 12 + 1e-6) / 12;
 // Point on a thrown or jumping arc from p0 to p1, peaking h px above the straight line; k = 0..1 along the flight.
 const arcPt = (p0, p1, h, k) => [lerp(p0[0], p1[0], k), lerp(p0[1], p1[1], k) - h * 4 * k * (1 - k)];
 // A hop that takes off at t0 and lands at t1, h body units high: crouch (anticipation), stretch on takeoff,
 // round at the top, squash on landing and spring back. Returns { dy, sq } to spread into clawd().
 function jump(t, t0, t1, h = 3) {
  if (t < t0 - .12) return { dy: 0, sq: 0 };
  if (t < t0) return { dy: 0, sq: .18 * ease(seg(t, t0 - .12, t0)) };
  if (t < t1) { const k = (t - t0) / (t1 - t0); return { dy: -h * 4 * k * (1 - k), sq: -.16 * Math.abs(1 - 2 * k) }; }
  const a = t - t1; return { dy: 0, sq: .22 * Math.exp(-8 * a) * Math.cos(20 * a) };
 }
 // A surprise "take" peaking at t0: a quick squash, then a big stretch up that springs back. amt scales it.
 function take(t, t0, amt = 1) {
  if (t < t0 - .1) return { sq: 0, dy: 0 };
  if (t < t0) return { sq: .12 * amt * ease(seg(t, t0 - .1, t0)), dy: 0 };
  const a = t - t0; return { sq: -.26 * amt * Math.exp(-6 * a) * Math.cos(16 * a), dy: -1.2 * amt * Math.exp(-7 * a) * Math.max(0, Math.cos(9 * a)) };
 }
 // Walk from x0 to x1 (px) between t0 and t1, for a character of unit u: eases in and out, faces the way it's
 // going in 3/4 view, and faces front when it stops. Returns { x, walk, view, flip, dy } for clawd().
 function stroll(t, t0, t1, x0, x1, u) {
  const x = lerp(x0, x1, ease(seg(t, t0, t1))), d = Math.abs(x - x0) / (4 * u), moving = t > t0 && t < t1;
  return { x, walk: d, view: moving ? 'q' : 'front', flip: x1 < x0, dy: moving ? -Math.abs(Math.sin(d * Math.PI)) * .5 : 0 };
 }
 // ---------- camera ----------
 // camBegin(cx, cy, zoom, rot): world point (cx, cy) lands at screen centre. Letters queued while a camera is
 // active are placed through it automatically (pass {screen:true} to opt out). One level only: always pair with camEnd().
 // LAST_CAM stays set after camEnd(), until the next frame: renderSheet's crops that follow a world point use it.
 let CAM = null, LAST_CAM = null;
 function camBegin(cx = W / 2, cy = H / 2, zoom = 1, rot = 0) { push(); translate(W / 2, H / 2); rotate(rot); scale(zoom); translate(-cx, -cy); CAM = LAST_CAM = { cx, cy, zoom, rot }; }
 function camEnd() { pop(); CAM = null; }
 function toScreen(x, y, cam = CAM) {
  if (!cam) return [x, y];
  const c = Math.cos(cam.rot), s = Math.sin(cam.rot), dx = (x - cam.cx) * cam.zoom, dy = (y - cam.cy) * cam.zoom;
  return [W / 2 + dx * c - dy * s, H / 2 + dx * s + dy * c];
 }
 // ---------- full-frame effects (call outside a camera, in screen space) ----------
 function flash(k, col = '#FFFDF6') { if (k > .01) paint(rectPts(-60, -60, W + 120, H + 120), { wash: col, washOp: 255 * clamp(k), ink: null }); }
 // Light: glow(x, y, r, col, a) ADDS a soft halo of light for anything that shines (stars, lamps, fireflies, magic).
 // p5.brush mixes every colour like pigment, so yellow painted over blue turns green and light can't be painted; this
 // is the one non-paint mark in the kit. It lands on what's painted so far, under anything painted after it, follows
 // the camera, and boils a little. Keep a = 1 on dark grounds; on light grounds it barely shows (as light would).
 function glow(x, y, r, col = '#FFC766', a = 1) {
  if (a <= 0 || r < 1) return;
  flushBrush();
  const c = color(col), rr = r * (1 + jit(.03));
  push(); blendMode(ADD); tint(red(c), green(c), blue(c), 150 * clamp(a)); image(glowTex, x - rr, y - rr, 2 * rr, 2 * rr); noTint(); blendMode(BLEND); pop();
 }
 function makeGlowTex() {
  const g = createGraphics(256, 256); g.pixelDensity(1); const c = g.drawingContext, gr = c.createRadialGradient(128, 128, 0, 128, 128, 128);
  [[0, 1], [.18, .8], [.45, .32], [.75, .08], [1, 0]].forEach(([s, a]) => gr.addColorStop(s, `rgba(255,255,255,${a})`));
  c.fillStyle = gr; c.fillRect(0, 0, 256, 256);
  return g;
 }
 // Paint everything OUTSIDE a star-shaped hole (irises, mouth-shaped reveals, keyholes).
 function irisShape(pts, col = PAL.ink, far = 4000) {
  const n = pts.length; let cx = 0, cy = 0; for (const p of pts) { cx += p[0]; cy += p[1]; } cx /= n; cy /= n;
  const out = p => { const dx = p[0] - cx, dy = p[1] - cy, d = Math.hypot(dx, dy) || 1; return [cx + dx / d * far, cy + dy / d * far]; };
  for (let i = 0; i < n; i++) {
    const a = pts[i], b = pts[(i + 1) % n], ex = (b[0] - a[0]) * .06, ey = (b[1] - a[1]) * .06;
    const a2 = [a[0] - ex, a[1] - ey], b2 = [b[0] + ex, b[1] + ey];
    paint([a2, b2, out(b2), out(a2)], { wash: col, washOp: 255, ink: null });
  }
 }
 function iris(cx, cy, r, col = PAL.ink) { if (r < 4) paint(rectPts(-60, -60, W + 120, H + 120), { wash: col, ink: null }); else irisShape(ellPts(cx, cy, r, r, 40), col); }
 let T = 0, paperG = null, grainC = null, letG = null, glowTex = null, outC = null, outX = null;
 let LETTERS = [];
 // ---------- geometry ----------
 function rectPts(x, y, w, h, j = 0) {
  return [[x + jit(j), y + jit(j)], [x + w / 2 + jit(j), y + jit(j) * .5], [x + w + jit(j), y + jit(j)],
          [x + w + jit(j) * .5, y + h / 2], [x + w + jit(j), y + h + jit(j)], [x + w / 2 + jit(j), y + h + jit(j) * .5],
          [x + jit(j), y + h + jit(j)], [x + jit(j) * .5, y + h / 2]];
 }
 function ellPts(cx, cy, rx, ry, n = 28, j = 0, rot = 0) {
  const p = []; for (let i = 0; i < n; i++) { const a = rot + i / n * TAU; p.push([cx + Math.cos(a) * rx + jit(j), cy + Math.sin(a) * ry + jit(j)]); } return p;
 }
 function rrPts(x, y, w, h, r, j = 0) {
  const p = [], seg = 5, corner = (cx, cy, a0) => { for (let i = 0; i <= seg; i++) { const a = a0 + i / seg * Math.PI / 2; p.push([cx + Math.cos(a) * r + jit(j), cy + Math.sin(a) * r + jit(j)]); } };
  corner(x + w - r, y + r, -Math.PI / 2); corner(x + w - r, y + h - r, 0); corner(x + r, y + h - r, Math.PI / 2); corner(x + r, y + r, Math.PI);
  return p;
 }
 function starPts(cx, cy, r, inner = .38, n = 4, rot = -Math.PI / 2) {
  const p = []; for (let i = 0; i < n * 2; i++) { const a = rot + i * Math.PI / n, q = i % 2 ? r * inner : r; p.push([cx + Math.cos(a) * q, cy + Math.sin(a) * q]); } return p;
 }
 // Smooth curve through the points (Catmull-Rom), n samples per span.
 function through(P, n = 6) {
  if (P.length < 3) return P.slice();
  const out = [];
  for (let i = 0; i < P.length - 1; i++) {
    const p0 = P[Math.max(0, i - 1)], p1 = P[i], p2 = P[i + 1], p3 = P[Math.min(P.length - 1, i + 2)];
    for (let k = 0; k < n; k++) {
      const u = k / n, u2 = u * u, u3 = u2 * u;
      out.push([0, 1].map(d => .5 * (2 * p1[d] + (p2[d] - p0[d]) * u + (2 * p0[d] - 5 * p1[d] + 4 * p2[d] - p3[d]) * u2 + (3 * p1[d] - p0[d] - 3 * p2[d] + p3[d]) * u3)));
    }
  }
  out.push(P[P.length - 1]);
  return out;
 }
 // Tapered ribbon around a path (w0 wide at the start, w1 at the end), as one closed outline for paint().
 // Tails, tentacles, noodly arms, painted glyphs: one shape with one outline, so nothing looks glued on.
 function ribbon(P, w0, w1 = w0) {
  const C = through(P), n = C.length, L = [], R = [];
  for (let i = 0; i < n; i++) {
    const a = C[Math.max(0, i - 1)], b = C[Math.min(n - 1, i + 1)], dx = b[0] - a[0], dy = b[1] - a[1], d = Math.hypot(dx, dy) || 1, w = lerp(w0, w1, i / Math.max(1, n - 1)) / 2;
    L.push([C[i][0] - dy / d * w, C[i][1] + dx / d * w]); R.push([C[i][0] + dy / d * w, C[i][1] - dx / d * w]);
  }
  return L.concat(R.reverse());
 }
 // ---------- paint wrapper ----------
 // One call = one painted shape: optional flat wash, optional watercolor fill, optional hatch, optional ink outline.
 // p5.brush 2.2.3 loses strokes drawn far from the origin under a zoomed camera (from zoom ~2, an outline or a line
 // leaves only a dot at its first vertex), so every shape and line is drawn around its own centre.
 function centred(pts, draw) {
  if (!pts.length) return;
  let x0 = Infinity, x1 = -Infinity, y0 = Infinity, y1 = -Infinity;
  for (const [x, y] of pts) { if (x < x0) x0 = x; if (x > x1) x1 = x; if (y < y0) y0 = y; if (y > y1) y1 = y; }
  const cx = (x0 + x1) / 2, cy = (y0 + y1) / 2;
  push(); translate(cx, cy); draw(pts.map(([x, y]) => [x - cx, y - cy])); pop();
 }
 function paint(pts, o = {}) { centred(pts, (P) => paintAt(P, o)); }
 function paintAt(pts, o) {
  if (o.wash || o.fill || o.hatch) {
    if (o.wash) brush.wash(o.wash, o.washOp ?? 255); else brush.noWash();
    if (o.fill) { brush.fill(o.fill, o.fillOp ?? 170); brush.fillBleed(o.bleed ?? .1); brush.fillTexture(o.tex ?? .4, o.border ?? .35); } else brush.noFill();
    if (o.hatch) { brush.hatch(o.hatch.d, o.hatch.a, o.hatch.o || { rand: .15 }); brush.hatchStyle(o.hatch.b || 'HB', o.hatch.c || PAL.ink, o.hatch.w || 1); } else brush.noHatch();
    brush.noStroke();
    if (o.curv) { brush.beginShape(o.curv); for (const p of pts) brush.vertex(p[0], p[1]); brush.endShape(true); }
    else brush.polygon(pts);
  }
  // the outline is one continuous tapered stroke, not a stroke per side
  if (o.ink !== null) {
    brush.noWash(); brush.noFill(); brush.noHatch(); brush.set(o.br || 'ink', o.ink || PAL.ink, o.sw ?? 1);
    brush.beginShape(o.curv || 0); for (const p of pts) brush.vertex(p[0], p[1]); brush.endShape(true);
  }
 }
 function inkLine(pts, sw = 1, col = PAL.ink, br = 'ink', curv = .5) {
  centred(pts, (P) => { brush.noFill(); brush.noWash(); brush.noHatch(); brush.set(br, col, sw); brush.spline(P, curv); });
 }
 // ---------- lettering (drawn on the 2D compositor, under the paper grain) ----------
 // Use sparingly: see "No text" in ANIMATION_GUIDE.md. Clawd's emotes are painted and never need these.
 function letter(txt, x, y, size, color, o = {}) {
  if (CAM && !o.screen) { [x, y] = toScreen(x, y); size *= CAM.zoom; o = { ...o, rot: (o.rot || 0) + CAM.rot }; if (o.font) o.font = o.font.replace(/(\d+(\.\d+)?)px/, (m, v) => (v * CAM.zoom) + 'px'); }
  LETTERS.push({ txt, x, y, size, color, ...o });
 }
 // Comic sound effect: pops in at age 0, wobbles, fades by `life` seconds.
 function sfx(txt, x, y, size, color, age, o = {}) {
  const life = o.life ?? 1.2; if (age < 0 || age > life) return;
  letter(txt, x, y, size, color, { pop: age * 5, rot: (o.rot ?? -.08) + Math.sin(age * 20) * .03 * (1 - age / life), alpha: 1 - seg(age, life - .25, life), ...o });
 }
 function drawLetters(c) {
  for (const L of LETTERS) {
    const k = L.pop != null ? backOut(L.pop) : 1; if (k <= .01) continue;
    c.save(); c.translate(L.x, L.y); c.rotate(L.rot || 0); c.scale(k, k); c.globalAlpha = L.alpha ?? 1;
    c.font = L.font || `${L.size}px "Permanent Marker", "Comic Sans MS", cursive`;
    c.textAlign = L.align || 'center'; c.textBaseline = 'middle';
    if (L.stroke) { c.lineJoin = 'round'; c.lineWidth = L.size * .12; c.strokeStyle = L.stroke; c.strokeText(L.txt, 0, 0); }
    if (L.ink !== false) { c.fillStyle = PAL.ink; c.fillText(L.txt, L.size * .045, L.size * .055); }
    c.fillStyle = L.color; c.fillText(L.txt, 0, 0);
    c.restore();
  }
 }
 // p5.brush defers washes and strokes into a mask layer; a (tiny, off-screen) watercolor fill forces it to composite
 // now, so everything painted before this call really lands under whatever p5 draws next (letters, glow).
 function flushBrush() {
  push(); resetMatrix(); translate(-W / 2, -H / 2);
  brush.noStroke(); brush.noHatch(); brush.noWash(); brush.fill('#000000', 1); brush.fillBleed(0); brush.fillTexture(0, 0);
  brush.polygon([[-50, -50], [-40, -50], [-40, -40]]); brush.noFill(); pop();
 }
 // Paint the queued lettering into the scene itself, so later layers (wipes) cover it. drawWorld calls this after each
 // frame; call it yourself before a wipe or iris if the shot has lettering, or the letters will sit on top of it.
 function flushLetters() {
  if (!LETTERS.length) return;
  letG.clear(); drawLetters(letG.drawingContext); LETTERS = [];
  flushBrush();
  // Letters are already in screen space, so composite them with the base transform even inside camBegin().
  push(); resetMatrix(); translate(-W / 2, -H / 2); image(letG, 0, 0); pop();
 }
 // ---------- paper ----------
 function lcg(seed) { let s = seed; return () => (s = (s * 16807) % 2147483647) / 2147483647; }
 function makePaper() {
  const g = createGraphics(W, H); g.pixelDensity(1); const c = g.drawingContext, rnd = lcg(11);
  c.fillStyle = PAL.paper; c.fillRect(0, 0, W, H);
  for (let i = 0; i < 70; i++) { const x = rnd() * W, y = rnd() * H, r = 120 + rnd() * 380, gr = c.createRadialGradient(x, y, 0, x, y, r), a = .045 * rnd(); gr.addColorStop(0, `rgba(160,125,80,${a})`); gr.addColorStop(1, 'rgba(160,125,80,0)'); c.fillStyle = gr; c.fillRect(x - r, y - r, 2 * r, 2 * r); }
  c.lineWidth = 1;
  for (let i = 0; i < 1400; i++) { const x = rnd() * W, y = rnd() * H, l = 6 + rnd() * 26, a = rnd() * TAU; c.strokeStyle = `rgba(110,88,60,${.035 + rnd() * .06})`; c.beginPath(); c.moveTo(x, y); c.quadraticCurveTo(x + Math.cos(a + .6) * l * .5, y + Math.sin(a + .6) * l * .5, x + Math.cos(a) * l, y + Math.sin(a) * l); c.stroke(); }
  return g;
 }
 // Static grain + vignette, multiplied over the painted frame so pigment sits "in" the paper.
 function makeGrain() {
  const cv = document.createElement('canvas'); cv.width = W; cv.height = H; const c = cv.getContext('2d'), rnd = lcg(5);
  const id = c.createImageData(W, H), d = id.data;
  for (let i = 0; i < d.length; i += 4) { const v = 255 - (rnd() < .55 ? rnd() * rnd() * 34 : 0); d[i] = v; d[i + 1] = v - 1; d[i + 2] = v - 3; d[i + 3] = 255; }
  c.putImageData(id, 0, 0);
  const g = c.createRadialGradient(W / 2, H / 2, H * .45, W / 2, H / 2, H * 1.05); g.addColorStop(0, 'rgba(255,255,255,0)'); g.addColorStop(1, 'rgba(120,95,70,.35)');
  c.fillStyle = g; c.fillRect(0, 0, W, H);
  return cv;
 }
 // ---------- custom brushes ----------
 function defineBrushes() {
  brush.add('ink', { type: 'default', weight: 5, scatter: .25, sharpness: .8, grain: 40, opacity: 235, spacing: .2, pressure: [1.15, .75], rotate: 'natural', noise: .15 });
  brush.add('inkfine', { type: 'default', weight: 2.6, scatter: .15, sharpness: .85, grain: 40, opacity: 230, spacing: .2, pressure: [1.1, .8], rotate: 'natural', noise: .1 });
  brush.add('dry', { type: 'default', weight: 14, scatter: 3, sharpness: .3, grain: 6, opacity: 90, spacing: .6, pressure: [1, .6], rotate: 'natural', noise: .4 });
 }
 // ---------- frame ----------
 async function setup() {
  createCanvas(W, H, WEBGL); pixelDensity(1); noLoop();
  brush.scaleBrushes(5); defineBrushes();
  paperG = makePaper(); grainC = makeGrain(); glowTex = makeGlowTex(); letG = createGraphics(W, H); letG.pixelDensity(1);
  outC = document.getElementById('out'); outX = outC.getContext('2d');
  await document.fonts.load('100px "Permanent Marker"');
  window.ready = true;
  if (!location.search.includes('render')) devUI();
 }
 function draw() {
  if (!window.ready) return;
  LETTERS = []; CAM = LAST_CAM = null;
  push(); translate(-W / 2, -H / 2);
  BOILN = Math.floor(T * BOIL); CLAWD_N = 0; boilSeed('frame'); noiseSeed(77);
  image(paperG, 0, 0);
  drawWorld(T);
  pop();
 }
 function composite(t) {
  const c = outX;
  c.globalCompositeOperation = 'source-over'; c.globalAlpha = 1;
  c.drawImage(drawingContext.canvas, 0, 0, W, H);
  drawLetters(c);
  c.globalCompositeOperation = 'multiply'; c.drawImage(grainC, 0, 0);
  c.globalCompositeOperation = 'source-over';
 }
 window.renderAt = async (t, type = 'image/png', q = .92) => { T = t; await redraw(); composite(t); return outC.toDataURL(type, q); };
 // Contact sheet of several times, for visual checks: returns { url, ms[] }. crop = [x, y, w, h] fills each cell with just
 // that region of the frame, at full resolution (for checking faces, hands and contacts up close). at = [x, y, w, h]
 // instead crops w × h around the WORLD point (x, y), wherever each frame's camera put it (a foot, a splash, a prop on
 // a moving shot); x and y may be expressions evaluated in the page.
 window.renderSheet = async (times, cols = 3, w = 640, crop = null, at = null) => {
  if (at) at = at.map((v) => typeof v === 'string' ? (0, eval)(v) : v);
  const [, , cw, ch] = at || crop || [0, 0, W, H], h = Math.round(w * ch / cw), rows = Math.ceil(times.length / cols), sc = document.createElement('canvas');
  sc.width = cols * w; sc.height = rows * h; const c = sc.getContext('2d'), ms = [];
  for (let i = 0; i < times.length; i++) {
    const t0 = performance.now(); T = times[i]; await redraw(); composite(times[i]); ms.push(Math.round(performance.now() - t0));
    const x = (i % cols) * w, y = Math.floor(i / cols) * h;
    const [cx, cy] = at ? toScreen(at[0], at[1], LAST_CAM).map((v, j) => v - (j ? ch : cw) / 2) : crop || [0, 0];
    c.drawImage(outC, cx, cy, cw, ch, x, y, w, h); c.fillStyle = 'rgba(0,0,0,.65)'; c.fillRect(x, y, 84, 24); c.fillStyle = '#fff'; c.font = '15px sans-serif'; c.fillText(times[i].toFixed(2) + 's', x + 6, y + 17);
  }
  return { url: sc.toDataURL('image/jpeg', .9), ms };
 };
 window.gpuInfo = () => { const gl = drawingContext, e = gl.getExtension('WEBGL_debug_renderer_info'); return e ? gl.getParameter(e.UNMASKED_RENDERER_WEBGL) : gl.getParameter(gl.RENDERER); };
 function devUI() {
  const s = document.getElementById('scrub'), lab = document.getElementById('tt'); s.max = window.LOOP ? window.LOOP.len : DUR;
  let busy = false, want = null;
  const go = async () => { if (busy) return; busy = true; while (want != null) { const t = want; want = null; const t0 = performance.now(); await window.renderAt(t); lab.textContent = `${t.toFixed(2)}s  ·  ${Math.round(performance.now() - t0)} ms/frame`; } busy = false; };
  s.addEventListener('input', () => { want = +s.value; go(); });
  want = +(new URLSearchParams(location.search).get('t') || 0); s.value = want; go();
 }
@@ -1,163 +0,0 @@
 // demo.js: "The fallen star", an 11-second example that exercises the kit. It is one idea, not a template: don't
 // copy its story, staging or palette into your own video (see ANIMATION_GUIDE.md).
 //   Shot A (0–4.4 s): Clawd dozes on a hill at night. A star falls behind the next hill. Clawd wakes, has an idea,
 //                     turns (drawn key views) and trots off after it. Brush wipe.
 //   Shot B (4.4–11 s): Clawd finds the star dim and sad in the grass, lifts it, and throws it back into the sky, where
 //                     it lights up again and twinkles goodbye. Iris out.
 (() => {
  const NIGHT = [PAL.indigo, PAL.violet];   // wipe colours, the same on both sides of the cut
  // ---------- set pieces ----------
  // ripple (optional): { x, y, t0 }, a wave of bright twinkles spreading out from (x, y) at time t0.
  function sky(t, horizon = 1.2, ripple = null) {
    boilSeed('sky');
    paint(rectPts(-600, -400, W + 1200, H + 800), { wash: PAL.night, ink: null });   // oversized: the camera pans
    paint(ellPts(W / 2, H * .95, W * .75, H * .45 * horizon, 30, 10), { fill: PAL.violet, fillOp: 110, bleed: .3, tex: .6, ink: null });
    paint(ellPts(W * .3, H * .15, W * .35, H * .25, 24, 10), { fill: PAL.indigo, fillOp: 90, bleed: .3, tex: .5, ink: null });
    for (let i = 0; i < 42; i++) {   // twinkling stars, each on its own clock and its own boil seed
      boilSeed('star' + i);
      const x = hash(i) * (W + 200) - 100, y = hash(i + 100) * H * .6 - 40;
      let tw = .55 + .45 * Math.sin(t * (2 + 2 * hash(i + 300)) + i);
      if (ripple) { const a = t - ripple.t0 - Math.hypot(x - ripple.x, y - ripple.y) / 1100; if (a > 0) tw += 1.3 * Math.exp(-a * 5) * Math.min(1, a * 25); }
      paint(starPts(x, y, (3 + 5 * hash(i + 200)) * tw, .35, 4), { wash: PAL.cream, washOp: Math.min(255, 150 + 100 * tw), ink: null });
    }
    boilSeed('moon');
    paint(ellPts(260, 170, 70, 70, 24, 1.5), { wash: PAL.cream, fill: PAL.ochre, fillOp: 40, ink: PAL.ink, sw: .8 });
    paint(ellPts(245, 150, 16, 12, 10), { fill: mixCol(PAL.cream, PAL.ochre, .5), fillOp: 120, ink: null });
  }
  function hill(cx, cy, rx, ry, col, t, tufts = 0) {
    boilSeed('hill' + cx);   // keyed by its position, which never changes
    paint(ellPts(cx, cy, rx, ry, 40, 2), { wash: col, fill: mixCol(col, PAL.night, .35), fillOp: 90, bleed: .08, tex: .6, ink: PAL.ink, sw: 1 });
    for (let i = 0; i < tufts; i++) {   // grass tufts along the top, swaying
      const a = -Math.PI / 2 + (hash(i + cx) - .5) * 1.6, x = cx + Math.cos(a) * rx, y = cy + Math.sin(a) * ry + 4, sw = wob(t, .5, hash(i) * 3) * 5;
      for (const k of [-1, 0, 1]) inkLine([[x + k * 7, y], [x + k * 11 + sw, y - 22 - 8 * hash(i + k)]], .7, mixCol(col, PAL.cream, .35), 'inkfine', .4);
    }
  }
  const hillY = (x, cx, cy, rx, ry) => cy - ry * Math.sqrt(Math.max(0, 1 - ((x - cx) / rx) ** 2));
  // The star: a five-point pal with a face. glow 0..1 (dim → bright), sad true/false.
  function starling(x, y, r, o = {}) {
    const g = clamp(o.glow ?? .6), tw = 1 + .06 * Math.sin(T * 9);
    glow(x, y, r * (1.6 + 1.4 * g) * tw, '#FFD96A', .25 + .75 * g);
    push(); translate(x, y); rotate(o.rot || 0);
    paint(starPts(0, 0, r, .52, 5), { wash: mixCol('#B9A98A', '#FFE27A', g), fill: PAL.cream, fillOp: 30 + 80 * g, ink: PAL.ink, sw: clamp(r / 40, .5, 1.2) });
    const e = r * .16;
    if (o.sad) {
      for (const s of [-1, 1]) inkLine([[s * e * 1.9 - e * .7, -e * .3 + s * e * .25], [s * e * 1.9 + e * .7, -e * .3 - s * e * .25]], clamp(r / 50, .4, 1), PAL.ink, 'ink', 0);
      inkLine([[-e, e * 1.6], [0, e * 1.1], [e, e * 1.6]], clamp(r / 60, .35, .9), PAL.ink, 'ink', .6);
    } else {
      for (const s of [-1, 1]) paint(ellPts(s * e * 1.9, -e * .3, e * .45, e * .6, 10), { wash: PAL.ink, ink: null });
      inkLine([[-e, e * .9], [0, e * 1.6], [e, e * .9]], clamp(r / 60, .35, .9), PAL.ink, 'ink', .6);
      if (r > 20) for (const s of [-1, 1]) paint(ellPts(s * e * 3.1, e * 1.1, e * .6, e * .3, 10), { fill: PAL.rose, fillOp: 150, ink: null });
    }
    pop();
  }
  const sparkle = (x, y, r, k) => { if (k > 0 && k < 1) paint(starPts(x, y, r * backOut(k) * (1 - k * .6), .25, 4, k * 2), { wash: PAL.cream, washOp: 255 * (1 - k * k), ink: null }); };
  // ---------- shot A: the fall ----------
  const FRONT = [700, 1010, 900, 220];   // front hill ellipse (cx, cy, rx, ry)
  const tFall0 = 1.05, tLand = 1.9;
  const fallAt = t => { const k = easeIn(seg(t, tFall0, tLand)); return [lerp(1680, 1545, k), lerp(40, 700, k)]; };
  function shotFall(t, lt, dur) {
    const shake = t > tLand ? shakeXY(t, 7 * Math.exp(-(t - tLand) * 7)) : [0, 0];
    camBegin(kf(t, [[0, 900], [2.9, 900], [4.4, 1230]]) + shake[0], kf(t, [[0, 560], [2, 540]]) + shake[1], kf(t, [[0, 1], [1.85, 1.07], [2.05, 1.03], [4.4, 1.01]]));
    sky(t);
    // the falling star, its trail, and the glow where it lands
    boilSeed('fall');
    if (t > tFall0 && t < tLand + .05) {
      const P = []; for (let k = 6; k >= 0; k--) P.push(fallAt(Math.max(tFall0, t - k * .045)));
      if (Math.hypot(P[6][0] - P[0][0], P[6][1] - P[0][1]) > 8) paint(ribbon(P, 2, 26), { wash: PAL.cream, fill: PAL.ochre, fillOp: 90, ink: null });
      const [sx, sy] = fallAt(t); starling(sx, sy, 22, { glow: 1, rot: t * 9 });
    }
    if (t > tLand) {
      const a = t - tLand, k = Math.exp(-a * 1.2);
      glow(1545, 690, 60 + 240 * (1 - Math.exp(-a * 5)), '#FFD96A', .3 + .9 * k);
      for (let i = 0; i < 7; i++) { const q = seg(a, i * .03, .5 + i * .03), ang = -Math.PI / 2 + (i - 3) * .35; sparkle(1545 + Math.cos(ang) * 190 * q, 660 + Math.sin(ang) * 170 * q, 18, q); }
    }
    hill(1560, 900, 820, 260, mixCol(PAL.teal, PAL.night, .45), t, 10);
    hill(...FRONT, mixCol(PAL.sap, PAL.night, .35), t, 16);
    // Clawd: dozing → startled → the idea → a turn through the key views → a trot down the hill after it
    const u = 17, x0 = 760, walk = stroll(t, 3.05, 4.7, x0, 1520, u);
    const x = t < 3.05 ? x0 : walk.x, gy = hillY(x, ...FRONT) + 4;
    const mood = emotions(t, [[0, 'sleepy'], [tLand + .05, 'surprised', { lookX: .8 }], [2.55, 'idea'], [3.1, 'excited']]);
    const facing = t < 2.9 ? {} : t < 3.05 ? turn(t, 2.9, 3.05, 0, .25) : { view: 'side', walk: walk.walk, dy: (mood.dy || 0) * .4 + walk.dy };
    const slope = (hillY(x + 5, ...FRONT) - hillY(x - 5, ...FRONT)) / 10;
    clawd(x, gy, u, { ...mood, ...facing, rot: (mood.rot || 0) + Math.atan(slope) * .8 });
    const eye = toScreen(x, gy - 4 * u);   // screen position of Clawd, for the iris
    camEnd();
    if (lt < .5) iris(...eye, lerp(0, 1500, easeIn(lt / .5)));   // open on Clawd
    boilSeed('transition');
    if (lt > dur - .3) brushWipe((lt - (dur - .3)) / .6, NIGHT);
  }
  // ---------- shot B: the return ----------
  // The ending is timed as a sequence of reads, one at a time, each held long enough to land:
  //   the throw (fast) → the flight (0.8 s: the eye follows the star up, the camera eases back to give it sky) →
  //   ARRIVAL, the payoff (the star flares and a twinkle ripples across the sky; Clawd only watches, held ~0.45 s) →
  //   Clawd's REACTION (love, 0.45 s after the arrival: cause, then effect; held ~0.6 s) →
  //   goodbye (Clawd waves; 0.45 s later the star twinkles back) → the iris closes to Clawd, holds, and shuts.
  function shotReturn(t, lt, dur) {
    const G = 880, u = 24;
    const tStop = 1.0, tLift = 1.9, tHold = 2.25, tWind = 2.55, tThrow = 2.7, tHome = 3.5, tLove = 3.95, tWave = 4.55, tReply = 5.0, tIris = 5.4;
    camBegin(960 + 18 * Math.sin(lt * .8), kf(lt, [[0, 530], [tThrow, 515], [tHome + .1, 470]]), kf(lt, [[0, 1], [tThrow, 1.04], [tHome + .1, 1], [dur, 1.06]]));
    sky(t, 1.4, { x: 1440, y: 150, t0: t - lt + tHome });   // the sky twinkles hello when the star gets home
    hill(1300, 1180, 1300, 330, mixCol(PAL.teal, PAL.night, .45), t, 0);
    boilSeed('ground');
    paint(rectPts(-200, G - 20, W + 400, 400, 3), { wash: mixCol(PAL.sap, PAL.night, .3), fill: mixCol(PAL.sap, PAL.night, .55), fillOp: 100, bleed: .05, tex: .6, ink: null });
    inkLine([[-200, G - 18], [W / 2, G - 24], [W + 200, G - 16]], 1, PAL.ink, 'ink', .5);
    const walk = stroll(lt, 0, tStop, 300, 950, u), x = walk.x;
    const mood = emotions(lt, [[0, 'excited'], [1.05, 'surprised', { lookX: .8, lookY: .6 }], [1.45, 'hopeful', { lookX: .6, lookY: .5 }],
                               [tHold, 'starstruck'], [tThrow + .05, 'hopeful', { lookX: .6, lookY: -.9 }], [tLove, 'love']]);
    let pose;
    if (lt < tStop) pose = { view: 'side', walk: walk.walk, dy: walk.dy };
    else if (lt < tLift - .1) pose = turn(lt, tStop, tStop + .12, .25, .125);
    else if (lt < tLift) pose = { ...turn(lt, tLift - .1, tLift, .125, 0), sq: .18 * ease(seg(lt, tLift - .1, tLift)), aL: -.2, aR: -.2 };   // crouch to pick it up
    else if (lt < tThrow) {
      const up = backOut(seg(lt, tLift, tHold)), wind = ease(seg(lt, tWind, tThrow));
      pose = { aL: lerp(-.2, 1.45, up) - .5 * wind, aR: lerp(-.2, 1.45, up) - .5 * wind, sq: .2 * wind };
    } else {   // follow-through: arms fly up with the throw, then settle while Clawd watches
      const a = lt - tThrow, arms = 1.5 - 1.0 * ease(seg(a, .3, .8));
      pose = { aL: arms, aR: arms, sq: -.22 * Math.exp(-a * 7) * Math.cos(a * 18), dy: -1.2 * Math.exp(-a * 6) * Math.max(0, Math.cos(a * 9)) };
    }
    const cl = { ...mood, ...pose, sq: (mood.sq || 0) + (pose.sq || 0), dy: (mood.dy || 0) * (lt < tStop ? .3 : 1) + (pose.dy || 0) };
    if (lt >= tLift) {   // arms and height belong to the lift and throw; the mood takes them back once the star is home
      const back = seg(lt, tHome, tLove);
      cl.dy = (pose.dy || 0) + (mood.dy || 0) * seg(lt, tThrow + .3, tHome);
      cl.aL = lerp(pose.aL, mood.aL ?? .2, back); cl.aR = lerp(pose.aR, mood.aR ?? .2, back);
    }
    if (lt > tWave) cl.aL = lerp(cl.aL, 1.2 + .5 * Math.sin((lt - tWave) * 13), ease(seg(lt, tWave, tWave + .2)));   // waving goodbye, with the left arm: the hearts sit by the right one
    clawd(x, G, u, cl);
    // the star: sad in the grass → lifted overhead, brightening → thrown home along an arc → home, twinkling back
    const head = [x, G + (cl.dy || 0) * u - 8 * u * (1 - (cl.sq || 0)) - 46];
    const ground = [1080, G - 30], home = [1440, 150];
    if (lt < tLift) starling(...ground, 38, { glow: .15 + .5 * seg(lt, 1.45, 1.9), sad: lt < 1.6, rot: -.15 + .04 * Math.sin(lt * 3) });
    else if (lt < tThrow) {
      const k = easeOut(seg(lt, tLift, tHold)), p = arcPt(ground, head, 80, k);
      starling(p[0], p[1] + 14 * ease(seg(lt, tWind, tThrow)), 38, { glow: .65 + .35 * seg(lt, tLift, tHold + .2), rot: .2 * Math.sin(lt * 7) });
    } else if (lt < tHome) {
      const k = easeOut(seg(lt, tThrow, tHome)), p = arcPt(head, home, 260, k);
      for (let i = 1; i < 9; i++) { const kk = Math.max(0, k - i * .045), q = arcPt(head, home, 260, kk); sparkle(q[0] + jit(4), q[1], 16 - i, .3 + i * .08); }
      starling(p[0], p[1], lerp(38, 22, k), { glow: 1, rot: lt * 10 * (1 - k) });
    } else {
      const a = lt - tHome, flare = Math.exp(-a * 4) + (lt > tReply ? Math.exp(-(lt - tReply) * 5) : 0);
      glow(...home, 90 + 120 * flare, '#FFE9A8', .6 * clamp(flare));
      sparkle(...home, 120, seg(a, 0, .55));
      sparkle(...home, 80, seg(lt, tReply, tReply + .45));
      starling(...home, 22 * (1 + .3 * clamp(flare)), { glow: .85 + .15 * Math.sin(a * 6), rot: .1 * Math.sin(a * 3) });
    }
    const eye = toScreen(x, G - 4 * u);
    camEnd();
    boilSeed('transition');
    if (lt < .3) brushWipe(.5 + lt / .6, NIGHT);
    if (lt > tIris) {   // iris to a small circle on Clawd, hold a moment, then shut
      const r = lt < tIris + .5 ? lerp(1500, 250, ease(seg(lt, tIris, tIris + .5))) : lt < dur - .3 ? lerp(250, 232, seg(lt, tIris + .5, dur - .3)) : lerp(232, 0, easeIn(seg(lt, dur - .3, dur - .05)));
      iris(...eye, r);
    }
  }
  shots([[0, shotFall], [4.4, shotReturn]]);
 })();
@@ -1,43 +0,0 @@
 // sheets.js: Clawd's model sheets, as standalone loops. They're reference for you (and the model), not part of a video,
 // so they're the one place labels are fine. Scrub them at studio.html?loop=views or ?loop=emotions, or render:
 //   node render.mjs --loop=emotions --sheet=1 --cols=1 --w=1920 --out=docs/emotions.jpg
 (() => {
  const label = (txt, x, y, size = 20) => letter(txt, x, y, size, PAL.ink, { ink: false, alpha: .8 });
  const floor = (y, x0 = 0, x1 = W) => inkLine([[x0 + 40, y + 6], [W / 2, y + 4], [x1 - 40, y + 7]], .6, mixCol(PAL.paper, PAL.ink, .35), 'inkfine', .5);
  // Every emotion in EMO, alive. Order follows EMO.
  LOOPS.emotions = t => {
    const names = Object.keys(EMO), cols = 8, cw = W / cols, ch = H / 4;
    names.forEach((name, i) => {
      const cx = cw * (i % cols) + cw / 2, gy = ch * Math.floor(i / cols) + ch - 58;
      clawd(cx, gy, 11, feel(name, t, { seed: i }));
      label(name, cx, gy + 32);
    });
    for (let r = 0; r < 4; r++) floor(ch * r + ch - 58);
  };
  LOOPS.emotions.len = 4;
  // Views, motion helpers, hats.
  LOOPS.views = t => {
    // row 1: the five key views (flip any of them to face left)
    const views = ['front', 'q', 'side', 'qback', 'back'];
    views.forEach((v, i) => { const x = 240 + i * 360; clawd(x, 420, 19, { ...feel('neutral', t, { seed: i }), view: v }); label(v, x, 462, 24); });
    floor(420);
    // row 2: motion
    const y2 = 730, u2 = 13, row = [
      ['walk (side)', x => clawd(x, y2, u2, { ...move('walk', t), view: 'side' })],
      ['turn / spinView', x => clawd(x, y2, u2, { ...feel('happy', t), ...spinView(Math.floor(t * 2) / 8) })],
      ['smear', x => clawd(x, y2, u2, { ...feel('excited', t), view: 'side', smear: .8, smearDir: 1, dx: Math.sin(t * TAU / 2) * .3 })],
      ['jump', x => { const k = t % 1.5; clawd(x, y2, u2, { ...feel('happy', t), ...jump(k, .35, .95, 3) }); }],
      ['take', x => clawd(x, y2, u2, { ...feel('surprised', t), ...take(t % 2, .5, 1.2), emoteAge: (t % 2) - .5, emoteK: seg(t % 2, .5, .7) })],
      ['lid', x => clawd(x, y2, u2, { ...feel('laugh', t), mouth: null, lid: .35 + .3 * Math.abs(Math.sin(t * TAU * 1.5)) })],
    ];
    row.forEach(([name, f], i) => { const x = 180 + i * 312; f(x); label(name, x, y2 + 38); });
    floor(y2);
    // row 3: hats
    const hats = ['party', 'hard', 'crown', 'halo', 'wizard', 'top', 'fedora', 'band', 'beanie', 'bow', 'flower', 'headphones', 'cat', 'masq', 'bowtie'];
    hats.forEach((h, i) => { const x = 82 + i * 125.5; clawd(x, 985, 8, { ...feel('neutral', t, { seed: i }), hat: h }); label(h, x, 1015, 17); });
    floor(985);
  };
  LOOPS.views.len = 4;
 })();
@@ -1,54 +0,0 @@
 // timeline.js: the shot list, standalone loops, and a brush-wipe transition.
 //
 // shots([[t0, fn], [t1, fn], ...]) registers shots in time order. Each fn(t, lt, dur) is called with t = video time,
 // lt = time since the shot started, dur = the shot's length. It paints the WHOLE frame, background included, and must be
 // a pure function of t: frames render in parallel and out of order, so nothing may carry over from one frame to the next.
 const SHOTS = [];
 function shots(list) { SHOTS.push(...list); SHOTS.sort((a, b) => a[0] - b[0]); }
 // Standalone loops (model sheets, GIFs, tests), outside the main timeline: window.LOOP = LOOPS[name] swaps the whole
 // frame for that function, called with loop time. Give each a length: LOOPS.x = t => { ... }; LOOPS.x.len = 4;
 const LOOPS = {};
 function drawWorld(t) {
  if (window.LOOP) window.LOOP(t);
  else if (!SHOTS.length) placeholder(t);
  else {
    let i = 0; while (i + 1 < SHOTS.length && t >= SHOTS[i + 1][0]) i++;
    const t0 = SHOTS[i][0], end = i + 1 < SHOTS.length ? SHOTS[i + 1][0] : DUR;
    SHOTS[i][1](t, t - t0, end - t0);
    CAM = null;
  }
  flushLetters();
 }
 function placeholder(t) {
  paint(ellPts(960, 520, 520, 300, 30, 20), { fill: PAL.sky, fillOp: 90, bleed: .3, ink: null });
  clawd(960, 820, 20, feel('happy', t));
 }
 // ---------- brush wipe ----------
 // A transition: fat paint strokes sweep across to cover the frame (p 0 → .5), then drag off (p .5 → 1).
 // Cut to the next shot at p = .5, under full cover. Call it last in both shots, in screen space (outside a camera):
 //   end of shot A:   if (lt > dur - .3) brushWipe((lt - (dur - .3)) / .6);
 //   start of shot B: if (lt < .3) brushWipe(.5 + lt / .6);
 function brushWipe(p, cols = [PAL.clayDk, PAL.clay]) {
  if (p <= 0 || p >= 1) return;
  const [c1, c2] = cols, n = 5, bh = (H + 420) / n + 40;
  push(); translate(W / 2, H / 2); rotate(-.1); translate(-W / 2, -H / 2);
  for (let i = 0; i < n; i++) {
    const y0 = -230 + i * (H + 420) / n, d = [0, .14, .06, .18, .1][i];
    const q = p < .5 ? easeOut(clamp((p * 2 - d) / (1 - d))) : ease(clamp(((p - .5) * 2 - d) / (1 - d)));
    const x0 = p < .5 ? -300 : lerp(-300, W + 400, q), x1 = p < .5 ? lerp(-300, W + 400, q) : W + 400;
    if (x1 - x0 < 30) continue;
    const pts = [], rag = k => 40 + 50 * hash(i * 31 + k) + jit(12);
    for (let k = 0; k <= 8; k++) pts.push([lerp(x0, x1, k / 8), y0 + Math.sin(k * .9 + i) * 14 + jit(5)]);
    for (let k = 1; k < 9; k++) pts.push([x1 + rag(k) - 40, y0 + bh * k / 9]);
    for (let k = 8; k >= 0; k--) pts.push([lerp(x0, x1, k / 8), y0 + bh + Math.sin(k * .8 + i * 2) * 14 + jit(5)]);
    if (p >= .5) for (let k = 8; k > 0; k--) pts.push([x0 - rag(k + 20) + 40, y0 + bh * k / 9]);
    paint(pts, { wash: i % 2 ? c1 : c2, washOp: 255, fill: i % 2 ? c2 : c1, fillOp: 70, bleed: .05, tex: .8, border: .6, ink: null,
      hatch: { d: 44, a: 0, o: { rand: .6, gradient: .5 }, b: 'charcoal', c: i % 2 ? c2 : PAL.cream, w: .8 } });
  }
  pop();
 }
@@ -1,38 +0,0 @@
 <!doctype html>
 <html>
 <head>
 <meta charset="utf-8">
 <title>Clawd studio</title>
 <link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Permanent+Marker&display=block">
 <style>
  html, body { margin: 0; background: #1b1820; color: #eee; font: 13px system-ui, sans-serif; }
  main { padding: 12px; display: grid; gap: 8px; }
  #out { width: min(100%, 1280px); aspect-ratio: 16 / 9; height: auto; background: #F3EBDC; }
  .p5Canvas { display: none !important; }
  .bar { display: flex; gap: 10px; align-items: center; max-width: 1280px; }
  #scrub { flex: 1; }
  #tt { font-variant-numeric: tabular-nums; min-width: 190px; }
 </style>
 <script src="node_modules/p5/lib/p5.min.js"></script>
 <script src="node_modules/p5.brush/dist/p5.brush.js"></script>
 </head>
 <body>
 <main>
  <canvas id="out" width="1920" height="1080"></canvas>
  <div class="bar"><input id="scrub" type="range" min="0" max="11" step="0.0417" value="0"><span id="tt">loading…</span></div>
 </main>
 <!-- engine -->
 <script src="src/config.js"></script>
 <script src="src/core.js"></script>
 <script src="src/clawd.js"></script>
 <script src="src/timeline.js"></script>
 <!-- reference sheets (standalone loops) -->
 <script src="src/sheets.js"></script>
 <!-- your video: add a script per scene file, in order -->
 <script src="src/scenes/demo.js"></script>
 <script>
  // Open studio.html?loop=emotions (or views) to scrub a standalone loop instead of the video.
  const q = new URLSearchParams(location.search).get('loop'); if (q && LOOPS[q]) window.LOOP = LOOPS[q];
 </script>
 </body>
 </html>