chore: import upstream snapshot with attribution

2026-07-13 12:58:35 +08:00
commit 85453da49f
4031 changed files with 710987 additions and 0 deletions
@@ -0,0 +1,55 @@
+// assets.mjs — stage frame-named capture assets into assets/.
+// Shared by stage-assets.mjs (Step 4 close, BEFORE the frame workers run) and
+// assemble-index.mjs (Step 5, idempotent backstop). Only assets a frame names
+// in `asset_candidates` are staged; unnamed assets never reach the project.
+// asset_candidates value form: "assets/<basename> — desc; assets/… — …".
+
+import { copyFileSync, existsSync, mkdirSync } from "node:fs";
+import { basename, join } from "node:path";
+
+export function basenamesFromCandidates(value) {
+  if (typeof value !== "string") return [];
+  return value
+    .split(";")
+    .map((seg) => seg.split(/\s+[—–-]\s+/)[0].trim()) // strip the " — description"
+    .filter(Boolean)
+    .map((p) => basename(p.replace(/^assets\//, "")));
+}
+
+// Copy each frame's asset_candidates from capture/{assets,assets/videos,
+// screenshots} into assets/. Already-staged files are left as is (first-wins),
+// so calling this twice is safe. Returns { staged, wanted, anomalies }.
+export function stageAssets({ hyperframesDir, frames }) {
+  const wanted = new Set();
+  for (const f of frames) {
+    for (const b of basenamesFromCandidates(f.extra?.asset_candidates)) wanted.add(b);
+  }
+  const captureDirs = [
+    join(hyperframesDir, "capture/assets"),
+    join(hyperframesDir, "capture/assets/videos"), // videos download into a subdir
+    join(hyperframesDir, "capture/screenshots"),
+  ];
+  const assetsDir = join(hyperframesDir, "assets");
+  const anomalies = [];
+  let staged = 0;
+  if (wanted.size > 0) {
+    mkdirSync(assetsDir, { recursive: true });
+    for (const b of wanted) {
+      const dest = join(assetsDir, b);
+      if (existsSync(dest)) {
+        staged++;
+        continue;
+      } // first-wins / already staged
+      const src = captureDirs.map((d) => join(d, b)).find((p) => existsSync(p));
+      if (src) {
+        copyFileSync(src, dest);
+        staged++;
+      } else {
+        anomalies.push(
+          `asset "${b}" named by a frame but not found under capture/ — frame will 404 it`,
+        );
+      }
+    }
+  }
+  return { staged, wanted, anomalies };
+}
@@ -0,0 +1,45 @@
+// dimensions.mjs — canvas size + caption-band geometry for the video
+// pipeline. Single source of truth = the STORYBOARD frontmatter `format` global
+// ("1920x1080" / "1080x1920" / "1080x1080", or a named orientation). Every
+// script and the index assembler reads the size from here; none hardcodes it.
+
+// Named orientation presets. Square/portrait are 1080-based so they share the
+// long-edge pixel budget with landscape (same render-cost ballpark).
+export const ORIENTATION_PRESETS = {
+  landscape: { width: 1920, height: 1080 }, // 16:9 — default
+  portrait: { width: 1080, height: 1920 }, // 9:16 — reels / shorts / TikTok
+  square: { width: 1080, height: 1080 }, // 1:1 — feed
+};
+
+export const DEFAULT_DIMENSIONS = ORIENTATION_PRESETS.landscape;
+
+function sane(w, h) {
+  return Number.isFinite(w) && Number.isFinite(h) && w >= 240 && h >= 240 && w <= 8192 && h <= 8192;
+}
+
+// Parse a STORYBOARD `format` global into { width, height, source }. Accepts
+// "WxH" (e.g. "1920x1080"; `x` or `×`, any inner spacing) or a named orientation;
+// falls back to landscape so a storyboard with a missing/garbled format still
+// renders (no behavior change vs the old landscape lock).
+export function parseFormat(format) {
+  const s = typeof format === "string" ? format.trim().toLowerCase() : "";
+  if (ORIENTATION_PRESETS[s]) return { ...ORIENTATION_PRESETS[s], source: `orientation=${s}` };
+  const m = s.match(/^(\d+)\s*[x×]\s*(\d+)$/);
+  if (m) {
+    const w = parseInt(m[1] ?? "", 10);
+    const h = parseInt(m[2] ?? "", 10);
+    if (sane(w, h)) return { width: w, height: h, source: "format" };
+  }
+  return { ...DEFAULT_DIMENSIONS, source: "default(landscape)" };
+}
+
+// Caption band geometry, derived from canvas height: the bottom ~16.67% (180px
+// at h=1080). Frame content must end `safetyPx` above the band top. Holds even
+// when captions are disabled (bottom-edge consistency).
+export const CAPTION_BAND_FRACTION = 0.1667;
+export function captionBand(height, safetyPx = 20) {
+  const h = Number.isFinite(height) ? height : DEFAULT_DIMENSIONS.height;
+  const bandHeight = Math.round(h * CAPTION_BAND_FRACTION);
+  const bandTopY = h - bandHeight; // foreground must end at/above this y
+  return { bandHeight, bandTopY, foregroundMaxY: bandTopY - safetyPx };
+}
@@ -0,0 +1,36 @@
+// pad-frame-duration.mjs — keeps a frame's own #root/clip data-duration in
+// sync with the padded index.html wrapper duration transitions.mjs computes.
+//
+// The frame's OWN internal file declares its #root/clip data-duration to the
+// STORYBOARD's content-only length (frame-worker.md: duration is "fixed
+// upstream"). When an outgoing transition pads the index.html WRAPPER's
+// data-duration to cover the transition tail, the frame's own internal
+// duration is left short — the render engine clip-gates the sub-composition's
+// visible content at that shorter value, so content vanishes abruptly at
+// content-end instead of fading gracefully through the wrapper's extended
+// fade-out tween. Pad the frame's own file to match so both durations agree.
+
+import { readFileSync, writeFileSync } from "node:fs";
+import { resolve } from "node:path";
+
+export function padFrameInternalDuration(hyperframesDir, frameSrc, frameId, newDuration) {
+  const framePath = resolve(hyperframesDir, frameSrc);
+  let html;
+  try {
+    html = readFileSync(framePath, "utf8");
+  } catch (err) {
+    if (err?.code === "ENOENT") return;
+    throw err;
+  }
+  const tagRe = /<[a-z][\w:-]*\s[^<>]*?>/gi;
+  let m;
+  while ((m = tagRe.exec(html)) !== null) {
+    const tag = m[0];
+    if (!tag.includes(`data-composition-id="${frameId}"`)) continue;
+    if (!/data-duration="[\d.]+"/.test(tag)) continue;
+    const newTag = tag.replace(/data-duration="[\d.]+"/, `data-duration="${newDuration}"`);
+    if (newTag === tag) return;
+    writeFileSync(framePath, html.slice(0, m.index) + newTag + html.slice(m.index + tag.length));
+    return;
+  }
+}
@@ -0,0 +1,249 @@
+// storyboard.mjs — vendored lenient parser for STORYBOARD.md.
+//
+// Faithful plain-JS port of @hyperframes/core/storyboard
+// (packages/core/src/storyboard/parseStoryboard.ts). Vendored because skills
+// ship standalone: installed via `npx skills add`, a skill's scripts can't reach
+// the monorepo's core package, and the core export points at .ts source that
+// `node` (which runs these scripts) can't load. CANONICAL contract = the core
+// parser + skills/hyperframes-core/references/storyboard-format.md; keep this in
+// lockstep. Behavior: never throws, accepts freeform narrative, recognizes
+// Frame/Beat/Scene headings at H2/H3, preserves unknown keys verbatim under
+// `extra` (keys lowercased). Pure node — no deps.
+
+export const FRAME_STATUSES = ["outline", "built", "animated"];
+export const DEFAULT_FRAME_STATUS = "outline";
+
+// Detection-only frame heading (ends at the keyword); ReDoS-hardened — keep as-is.
+const FRAME_HEADING_RE = /^(#{2,3})[ \t]+(?:frame|beat|scene)\b/i;
+const FRAME_TITLE_SEP_RE = /^[\s.:—-]+/;
+const HEADING_LEVEL_RE = /^(#{1,6})\s+/;
+const META_RE = /^\s*[-*]\s+([A-Za-z_][\w-]*)\s*:\s*(.+?)\s*$/;
+const LEADING_INT_RE = /^(\d+)/;
+const DURATION_NUM_RE = /(\d+(?:\.\d+)?)/;
+const TRANSITION_KEYS = new Set(["transition_in", "transitionin", "transition"]);
+const SCENE_KEYS = new Set(["scene", "description", "summary", "caption"]);
+export const VOICEOVER_ALIASES = ["voiceover", "vo", "voice_over", "narration"];
+const VOICEOVER_KEYS = new Set(VOICEOVER_ALIASES);
+
+export function parseStoryboard(source) {
+  const warnings = [];
+  const { globals, bodyStartLine, body } = parseFrontmatter(source, warnings);
+  const frames = parseFrames(body, bodyStartLine, warnings);
+  return { globals, frames, warnings };
+}
+
+function emptyGlobals() {
+  return { extra: {} };
+}
+
+function isFrameStatus(value) {
+  return FRAME_STATUSES.includes(value);
+}
+
+// ── Frontmatter ─────────────────────────────────────────────────────────────
+function findFrontmatterRange(lines, warnings) {
+  let start = 0;
+  while (start < lines.length && (lines[start] ?? "").trim() === "") start++;
+  if ((lines[start] ?? "").trim() !== "---") return null;
+  for (let i = start + 1; i < lines.length; i++) {
+    if ((lines[i] ?? "").trim() === "---") return { start, end: i };
+  }
+  warnings.push({
+    message: "Frontmatter opening '---' has no closing '---'; treating whole file as body.",
+    line: start + 1,
+  });
+  return null;
+}
+
+function parseFrontmatterEntries(lines, start, end, warnings) {
+  const globals = emptyGlobals();
+  for (let i = start + 1; i < end; i++) {
+    const raw = lines[i] ?? "";
+    if (raw.trim() === "") continue;
+    const colon = raw.indexOf(":");
+    if (colon === -1) {
+      warnings.push({
+        message: `Ignored non key:value frontmatter line: "${raw.trim()}"`,
+        line: i + 1,
+      });
+      continue;
+    }
+    const key = raw.slice(0, colon).trim().toLowerCase();
+    assignGlobal(globals, key, stripQuotes(raw.slice(colon + 1).trim()));
+  }
+  return globals;
+}
+
+function parseFrontmatter(source, warnings) {
+  const lines = source.split(/\r?\n/);
+  const range = findFrontmatterRange(lines, warnings);
+  if (!range) return { globals: emptyGlobals(), bodyStartLine: 1, body: source };
+  const globals = parseFrontmatterEntries(lines, range.start, range.end, warnings);
+  const body = lines.slice(range.end + 1).join("\n");
+  return { globals, bodyStartLine: range.end + 2, body };
+}
+
+function assignGlobal(globals, key, value) {
+  switch (key) {
+    case "format":
+      globals.format = value;
+      break;
+    case "message":
+      globals.message = value;
+      break;
+    case "arc":
+      globals.arc = value;
+      break;
+    case "audience":
+      globals.audience = value;
+      break;
+    default:
+      globals.extra[key] = value;
+  }
+}
+
+// ── Frames ──────────────────────────────────────────────────────────────────
+function openFrameSection(line, headingLine) {
+  const match = FRAME_HEADING_RE.exec(line);
+  if (!match) return null;
+  const headingText = line.slice(match[0].length).replace(FRAME_TITLE_SEP_RE, "").trim();
+  return { headingText, headingLine, level: (match[1] ?? "##").length, lines: [] };
+}
+
+function endsFrameSection(line, current) {
+  if (!current) return false;
+  const heading = HEADING_LEVEL_RE.exec(line);
+  return heading !== null && (heading[1] ?? "").length <= current.level;
+}
+
+function parseFrames(body, bodyStartLine, warnings) {
+  const lines = body.split(/\r?\n/);
+  const sections = [];
+  let current = null;
+  for (let i = 0; i < lines.length; i++) {
+    const line = lines[i] ?? "";
+    const opened = openFrameSection(line, bodyStartLine + i);
+    if (opened) {
+      sections.push(opened);
+      current = opened;
+    } else if (endsFrameSection(line, current)) {
+      current = null;
+    } else if (current) {
+      current.lines.push(line);
+    }
+  }
+  return sections.map((section, idx) => buildFrame(section, idx + 1, warnings));
+}
+
+function buildFrame(section, index, warnings) {
+  const frame = { index, status: DEFAULT_FRAME_STATUS, narrative: "", extra: {} };
+  const { number, title } = parseHeading(section.headingText);
+  if (number !== undefined) frame.number = number;
+  if (title) frame.title = title;
+
+  const narrativeLines = [];
+  for (const line of section.lines) {
+    const meta = META_RE.exec(line);
+    if (meta) {
+      applyMeta(
+        frame,
+        (meta[1] ?? "").toLowerCase(),
+        (meta[2] ?? "").trim(),
+        section.headingLine,
+        warnings,
+      );
+    } else {
+      narrativeLines.push(line);
+    }
+  }
+  frame.narrative = narrativeLines.join("\n").trim();
+  return frame;
+}
+
+function parseHeading(text) {
+  if (!text) return {};
+  const intMatch = LEADING_INT_RE.exec(text);
+  if (!intMatch) return { title: text };
+  const number = Number.parseInt(intMatch[1] ?? "", 10);
+  const rest = text
+    .slice((intMatch[0] ?? "").length)
+    .replace(/^[\s.:—-]+/, "")
+    .trim();
+  return { number, title: rest || undefined };
+}
+
+// Dispatch a recognized metadata key to its field, else stash under `extra`.
+// Mirrors core's META_SETTERS map exactly (direct keys + alias sets).
+function applyMeta(frame, key, value, headingLine, warnings) {
+  switch (key) {
+    case "duration":
+      applyDuration(frame, value, headingLine, warnings);
+      return;
+    case "status":
+      applyStatus(frame, value, headingLine, warnings);
+      return;
+    case "poster":
+      applyPoster(frame, value);
+      return;
+    case "src":
+      frame.src = value;
+      return;
+  }
+  if (TRANSITION_KEYS.has(key)) {
+    frame.transitionIn = value;
+    return;
+  }
+  if (SCENE_KEYS.has(key)) {
+    frame.scene = value;
+    return;
+  }
+  if (VOICEOVER_KEYS.has(key)) {
+    frame.voiceover = stripQuotes(value);
+    return;
+  }
+  frame.extra[key] = value;
+}
+
+function applyPoster(frame, value) {
+  const num = DURATION_NUM_RE.exec(value);
+  if (num) frame.poster = Number.parseFloat(num[1] ?? "");
+}
+
+function applyDuration(frame, value, headingLine, warnings) {
+  frame.duration = value;
+  const num = DURATION_NUM_RE.exec(value);
+  if (num) {
+    frame.durationSeconds = Number.parseFloat(num[1] ?? "");
+    return;
+  }
+  warnings.push({
+    message: `Frame ${frame.index}: could not parse duration "${value}".`,
+    line: headingLine,
+    frameIndex: frame.index,
+  });
+}
+
+function applyStatus(frame, value, headingLine, warnings) {
+  const normalized = value.toLowerCase();
+  if (isFrameStatus(normalized)) {
+    frame.status = normalized;
+    return;
+  }
+  frame.extra.status = value;
+  warnings.push({
+    message: `Frame ${frame.index}: unknown status "${value}"; defaulting to "${DEFAULT_FRAME_STATUS}".`,
+    line: headingLine,
+    frameIndex: frame.index,
+  });
+}
+
+function stripQuotes(value) {
+  if (value.length >= 2) {
+    const first = value[0];
+    const last = value[value.length - 1];
+    if ((first === '"' && last === '"') || (first === "'" && last === "'")) {
+      return value.slice(1, -1);
+    }
+  }
+  return value;
+}
@@ -0,0 +1,219 @@
+// tokens.mjs — shared brand-token parsing + semantic role mapping for frame.md /
+// FRAME.md. Used by build-frame.mjs (remix a preset onto brand tokens) and
+// captions.mjs (derive caption colors from frame.md). One mapping → frames and
+// captions stay consistent. Pure node.
+
+// Collect `key: value` pairs under the top-level `colors:` block (until dedent).
+export function parseColors(md) {
+  const out = [];
+  let inBlock = false;
+  for (const line of md.split(/\r?\n/)) {
+    if (/^colors:\s*$/.test(line)) {
+      inBlock = true;
+      continue;
+    }
+    if (!inBlock) continue;
+    if (/^\S/.test(line)) break; // dedent to a top-level key → end of block
+    const m = line.match(
+      /^\s+([\w-]+):\s*(?:"([^"]+)"|'([^']+)'|(#[0-9a-fA-F]{3,8}|rgba?\([^)]*\)|[^#\s][^#\n]*?))\s*(?:#.*)?$/,
+    );
+    if (m) out.push([m[1], (m[2] ?? m[3] ?? m[4]).trim()]);
+  }
+  return out;
+}
+
+// relative luminance of a #rrggbb (null for non-hex like rgba()).
+export function lum(v) {
+  const m = /^#?([0-9a-fA-F]{6})$/.exec(String(v).trim());
+  if (!m) return null;
+  const n = parseInt(m[1], 16);
+  return 0.2126 * ((n >> 16) & 255) + 0.7152 * ((n >> 8) & 255) + 0.0722 * (n & 255);
+}
+
+// chroma (max−min channel) of a #rrggbb — a cheap "how colorful" proxy; −1 for non-hex.
+export function chroma(v) {
+  const m = /^#?([0-9a-fA-F]{6})$/.exec(String(v).trim());
+  if (!m) return -1;
+  const n = parseInt(m[1], 16);
+  const r = (n >> 16) & 255,
+    g = (n >> 8) & 255,
+    b = n & 255;
+  return Math.max(r, g, b) - Math.min(r, g, b);
+}
+
+// Browser user-agent default colors for links / visited links. These leak into a
+// capture from any UNSTYLED <a> and are NOT brand colors — but being pure & saturated
+// they beat a real accent on chroma alone. Never let one become the accent.
+export const UA_DEFAULT_COLORS = new Set(
+  ["#0000EE", "#0000FF", "#0000CC", "#1A0DAB", "#551A8B", "#EE0000"].map((c) => c.toUpperCase()),
+);
+
+// Semantic STATUS roles (green "positive", red "negative"/"error", amber "warning" …). Their HUE
+// carries the meaning, so they are never a brand ACCENT — a status red is frequently the most
+// chromatic color in a palette (e.g. #dc2626 chroma 182 beats a deep-blue accent #1E40AF chroma
+// 145) and would otherwise win a pure chroma ranking, painting captions/highlights the error red.
+// build-frame.mjs uses this same key set to protect status colors during the preset→brand remix.
+export const STATUS_ROLE_KEY =
+  /(?:^|[-_])(?:positive|negative|success|error|warning|danger|good|bad|up|down|info|neutral|alert|caution|critical)(?:[-_]|$)/i;
+
+// Pick the brand ACCENT — never by raw chroma alone, never a UA-default link color.
+// Priority:
+//   1) with capture colorStats → the colorful color that RECURS across the UI. The brand
+//      accent shows up in MANY roles (link text + icon + button + badge), whereas a one-off
+//      CTA fill appears in just one. So rank chromatic (chroma>40) candidates by role
+//      diversity first, then total prevalence, then interactive use, then chroma. This keeps
+//      a pervasive brand color (e.g. an indigo used everywhere) ahead of a single bright
+//      button fill (e.g. a lime used once) — the old "top interactiveBg" rule picked the
+//      latter. Requiring interactiveBg>0 is dropped so a text/icon-only accent can still win.
+//   2) no stats → most chromatic color AFTER removing UA defaults + `exclude`.
+// A stray default link color (e.g. #0000EE) can win under neither path.
+export function pickAccent(stats, colors, exclude = []) {
+  const ban = new Set([...exclude, ...UA_DEFAULT_COLORS].map((c) => String(c).toUpperCase()));
+  const ok = (h) => /^#[0-9a-fA-F]{6}$/.test(String(h)) && !ban.has(String(h).toUpperCase());
+  // Prominence rank from the (frequency-ordered) `colors` palette: index 0 = most used.
+  // A saturated color sitting at the TAIL is almost always a one-off (a single CTA fill),
+  // not the brand accent — capture colorStats counts are too sparse to tell these apart
+  // (e.g. Linear's indigo and a lime CTA both register count≈1), but palette ORDER does.
+  const rank = new Map((colors ?? []).map((h, i) => [String(h).toUpperCase(), i]));
+  const prom = (h) => (rank.has(String(h).toUpperCase()) ? rank.get(String(h).toUpperCase()) : 1e9);
+  if (Array.isArray(stats) && stats.length) {
+    const roles = (s) =>
+      ((s.interactiveBg || 0) > 0 ? 1 : 0) +
+      ((s.textCount || 0) > 0 ? 1 : 0) +
+      ((s.bgCount || 0) > 0 ? 1 : 0);
+    const a = stats
+      .filter((s) => ok(s?.hex) && chroma(s.hex) > 40)
+      .sort(
+        (x, y) =>
+          roles(y) - roles(x) || // used in MORE roles (link+icon+button) = the brand accent
+          prom(x.hex) - prom(y.hex) || // earlier in the palette = more prominent
+          (y.count || 0) - (x.count || 0) ||
+          (y.interactiveBg || 0) - (x.interactiveBg || 0) ||
+          chroma(y.hex) - chroma(x.hex),
+      );
+    if (a.length) return a[0].hex;
+  }
+  const c = (colors ?? [])
+    .map(String)
+    .filter(ok)
+    .sort((x, y) => chroma(y) - chroma(x));
+  return c[0];
+}
+
+// Derive brand roles from rich capture colorStats (areaBg / interactiveBg / textCount /
+// maxArea) — by semantic FUNCTION, not luminance/chroma proxies. Returns null when stats
+// are unusable, so the caller can fall back. canvas = the color painting the most real
+// background area (the page ground, dark or light); ink = the dominant text color that
+// actually contrasts with the canvas; accent via pickAccent.
+export function brandRolesFromStats(stats, colorsInOrder) {
+  if (!Array.isArray(stats) || !stats.length) return null;
+  const v = stats.filter((s) => /^#[0-9a-fA-F]{6}$/.test(s?.hex || ""));
+  if (!v.length) return null;
+  const canvas = [...v].sort(
+    (a, b) =>
+      (b.areaBg || 0) - (a.areaBg || 0) ||
+      (b.maxArea || 0) - (a.maxArea || 0) ||
+      (b.bgCount || 0) - (a.bgCount || 0),
+  )[0]?.hex;
+  // pass the frequency-ordered palette (tokens.colors) so pickAccent can use palette
+  // PROMINENCE — colorStats counts alone are too sparse to rank rare accents.
+  const accent = pickAccent(v, colorsInOrder ?? v.map((s) => s.hex), [canvas]);
+  if (!canvas || !accent) return null;
+  const cl = lum(canvas) ?? 0;
+  const ink =
+    [...v]
+      .filter((s) => s.hex !== canvas && s.hex !== accent)
+      .sort((a, b) => (b.textCount || 0) - (a.textCount || 0))
+      .find((s) => Math.abs((lum(s.hex) ?? 0) - cl) > 64)?.hex ??
+    (cl > 128 ? "#000000" : "#FFFFFF");
+  const accent2 =
+    v
+      .filter(
+        (s) =>
+          ![canvas, ink, accent].includes(s.hex) &&
+          (s.interactiveBg || 0) > 0 &&
+          chroma(s.hex) > 40 &&
+          !UA_DEFAULT_COLORS.has(s.hex.toUpperCase()),
+      )
+      .sort((a, b) => (b.interactiveBg || 0) - (a.interactiveBg || 0))[0]?.hex ?? accent;
+  return { ink, canvas, accent, accent2 };
+}
+
+// Map a list of [key, value] colors to semantic roles. ink = a dark/ink-named
+// color (else darkest); canvas = a paper/cream/white-named color (else lightest);
+// accents = whatever's left, ranked by chroma (the loudest color is almost always
+// the brand accent) — UA-default link colors AND semantic status colors (positive/
+// negative/error…) excluded so neither a stray <a> color nor a status red ever wins.
+// For an unkeyed brand list, pass synthetic keys — name matching simply no-ops and it
+// falls back to luminance/chroma, which is what we want. NOTE: when capture colorStats
+// exist, prefer brandRolesFromStats() — it picks by function, not these proxies.
+export function semanticColors(colors) {
+  if (!colors.length) return {};
+  const named = (re) => colors.find(([k]) => re.test(k));
+  const hexes = colors.filter(([, v]) => lum(v) != null);
+  const byLum = [...hexes].sort((a, b) => (lum(a[1]) ?? 1e9) - (lum(b[1]) ?? 1e9));
+  const pick = (m, fallback) => (m ? m[1] : fallback ? fallback[1] : undefined);
+  // "ink" must be a whole word-segment so "soft-pink"/"pink" don't match it.
+  const ink = pick(
+    named(/(?:^|[-_])ink(?:[-_]|$)|black|charcoal|^text(?:-dark)?$|outline|noir/i),
+    byLum[0] ?? colors[0],
+  );
+  const canvas = pick(
+    named(/cream|paper|canvas|white|bg|ground|surface|base|sand|parchment|off-?white|bone/i),
+    byLum[byLum.length - 1] ?? colors[colors.length - 1],
+  );
+  const accents = colors
+    .filter(
+      ([k, v]) =>
+        v !== ink &&
+        v !== canvas &&
+        !UA_DEFAULT_COLORS.has(String(v).toUpperCase()) &&
+        !STATUS_ROLE_KEY.test(k), // a status red/green carries meaning by hue — never an accent
+    )
+    .sort((a, b) => chroma(b[1]) - chroma(a[1]))
+    .map(([, v]) => v);
+  return { ink, canvas, accent: accents[0] ?? ink, accent2: accents[1] ?? accents[0] ?? ink };
+}
+
+// Collect role→fontFamily under the top-level `typography:` block; pick a display
+// + body family from the usual role names. Returns quoted families (or null).
+export function parseFonts(md) {
+  const roles = {};
+  let inBlock = false;
+  for (const line of md.split(/\r?\n/)) {
+    if (/^typography:\s*$/.test(line)) {
+      inBlock = true;
+      continue;
+    }
+    if (!inBlock) continue;
+    if (/^\S/.test(line)) break;
+    const m = line.match(/^\s+([\w-]+):\s*\{[^}]*fontFamily:\s*"([^"]+)"/);
+    if (m) roles[m[1]] = m[2];
+  }
+  const q = (s) => (s ? `"${s}"` : null);
+  const body = roles.body ?? roles.subtitle ?? Object.values(roles)[0];
+  const display =
+    roles.display ??
+    roles.headline ??
+    roles["card-headline"] ??
+    roles["section-headline"] ??
+    roles["quote-display"] ??
+    roles.h1 ??
+    roles.h2 ??
+    roles.title ??
+    roles.hero ??
+    body;
+  // the monospace / chrome family (code, tags, ticks, page numbers) — so the remix can
+  // route a captured brand mono (Berkeley Mono, JetBrains Mono…) onto this role instead
+  // of the reading body. null when the preset has no distinct mono role.
+  const mono =
+    roles.mono ??
+    roles["mono-tag"] ??
+    roles["mono-chrome"] ??
+    roles["mono-tick"] ??
+    roles.code ??
+    roles.data ??
+    roles.pagenum ??
+    null;
+  return { display: q(display), body: q(body), mono: q(mono) };
+}
@@ -0,0 +1,38 @@
+// transition-registry.mjs — loader for this skill's vendored transition registry
+// (./transitions.json). The registry is the curated Tier-B subset (transform /
+// opacity / filter on the two frame clip wrappers `#el-<id>`, no overlay DOM) +
+// each type's GSAP template. Vendored into the skill so it ships standalone; the
+// recipes originate from the shared catalog skills/hyperframes-animation/
+// transitions/ (css-*.md) — keep them in step if those shared recipes change.
+
+import { readFileSync } from "node:fs";
+import { resolve, dirname } from "node:path";
+import { fileURLToPath } from "node:url";
+
+const here = dirname(fileURLToPath(import.meta.url));
+export const DEFAULT_REGISTRY_PATH = resolve(here, "./transitions.json");
+
+let _cache = null;
+
+export function loadTransitionRegistry(registryPath = DEFAULT_REGISTRY_PATH) {
+  if (_cache && _cache.path === registryPath) return _cache.data;
+  let data;
+  try {
+    data = JSON.parse(readFileSync(registryPath, "utf8"));
+  } catch (e) {
+    throw new Error(`transition registry not loadable at ${registryPath}: ${e.message}`);
+  }
+  if (!Array.isArray(data.transitions) || data.transitions.length === 0) {
+    throw new Error(`transition registry ${registryPath} has no transitions[]`);
+  }
+  _cache = { path: registryPath, data };
+  return data;
+}
+
+// Convenience: a Map name -> transition record.
+export function transitionsByName(registryPath = DEFAULT_REGISTRY_PATH) {
+  const data = loadTransitionRegistry(registryPath);
+  const map = new Map();
+  for (const t of data.transitions) map.set(t.name, t);
+  return map;
+}
@@ -0,0 +1,71 @@
+{
+  "_comment": "Vendored transition registry for the product-launch workflow — the curated Tier-B subset (transform/opacity/filter on the two frame clip wrappers #el-<id>, no overlay DOM, no per-frame cooperation). Each type carries its GSAP template; the transitions.mjs injector stamps it onto window.__timelines[\"main\"]. Recipes originate from the shared catalog skills/hyperframes-animation/transitions/ (css-*.md) — keep in step if those change. Token placeholders the injector substitutes: __OLD__ (#el-<from>), __NEW__ (#el-<to>), __T__ (overlap-start s), __DUR__ (this boundary's duration), __DX__/__DXIN__ (horizontal travel + incoming offset), __DY__/__DYIN__ (vertical).",
+  "transitions": [
+    {
+      "name": "crossfade",
+      "energy": "any",
+      "default_duration_s": 0.5,
+      "directions": [],
+      "source": "css-dissolve.md",
+      "gsap_template": [
+        "tl.to(__OLD__, { opacity: 0, duration: __DUR__, ease: \"power2.inOut\" }, __T__);",
+        "tl.fromTo(__NEW__, { opacity: 0 }, { opacity: 1, duration: __DUR__, ease: \"power2.inOut\" }, __T__);"
+      ]
+    },
+    {
+      "name": "blur-crossfade",
+      "energy": "calm",
+      "default_duration_s": 0.6,
+      "directions": [],
+      "source": "css-dissolve.md",
+      "note": "Default when the two frames' #root backgrounds differ a lot — the blur masks the background-color clash a plain crossfade would expose.",
+      "gsap_template": [
+        "tl.to(__OLD__, { filter: \"blur(10px)\", scale: 1.03, opacity: 0, duration: __DUR__, ease: \"power2.inOut\" }, __T__);",
+        "tl.fromTo(__NEW__, { filter: \"blur(10px)\", scale: 0.97, opacity: 0 }, { filter: \"blur(0px)\", scale: 1, opacity: 1, duration: __DUR__, ease: \"power2.inOut\" }, __T__);"
+      ]
+    },
+    {
+      "name": "push-slide",
+      "energy": "medium",
+      "default_duration_s": 0.5,
+      "directions": ["LEFT", "RIGHT", "UP", "DOWN"],
+      "default_direction": "LEFT",
+      "source": "css-push.md",
+      "note": "Directional. The injector picks __DX__/__DY__ from the direction and emits the horizontal OR vertical pair (not both).",
+      "gsap_template_horizontal": [
+        "tl.to(__OLD__, { x: __DX__, duration: __DUR__, ease: \"power3.inOut\" }, __T__);",
+        "tl.fromTo(__NEW__, { x: __DXIN__, opacity: 1 }, { x: 0, duration: __DUR__, ease: \"power3.inOut\" }, __T__);"
+      ],
+      "gsap_template_vertical": [
+        "tl.to(__OLD__, { y: __DY__, duration: __DUR__, ease: \"power3.inOut\" }, __T__);",
+        "tl.fromTo(__NEW__, { y: __DYIN__, opacity: 1 }, { y: 0, duration: __DUR__, ease: \"power3.inOut\" }, __T__);"
+      ]
+    },
+    {
+      "name": "zoom-through",
+      "energy": "high",
+      "default_duration_s": 0.4,
+      "directions": [],
+      "source": "css-scale.md",
+      "gsap_template": [
+        "tl.to(__OLD__, { scale: 2.5, opacity: 0, filter: \"blur(8px)\", duration: __DUR__, ease: \"power3.in\" }, __T__);",
+        "tl.fromTo(__NEW__, { scale: 0.5, opacity: 0, filter: \"blur(8px)\" }, { scale: 1, opacity: 1, filter: \"blur(0px)\", duration: __DUR__, ease: \"power3.out\" }, __T__);"
+      ]
+    },
+    {
+      "name": "squeeze",
+      "energy": "medium",
+      "default_duration_s": 0.4,
+      "directions": [],
+      "source": "css-push.md",
+      "note": "Old compresses to a vertical line on the left edge; new expands from the right edge. Incoming starts off (scaleX 0) so its higher-track stacking is harmless.",
+      "gsap_template": [
+        "tl.to(__OLD__, { scaleX: 0, transformOrigin: \"left center\", duration: __DUR__, ease: \"power3.inOut\" }, __T__);",
+        "tl.fromTo(__NEW__, { scaleX: 0, transformOrigin: \"right center\", opacity: 1 }, { scaleX: 1, transformOrigin: \"right center\", duration: __DUR__, ease: \"power3.inOut\" }, __T__);"
+      ]
+    }
+  ],
+  "default_high_energy": "zoom-through",
+  "default_calm": "blur-crossfade",
+  "max_duration_s": 2.0
+}