Files
hyperframes/skills/faceless-explainer/scripts/assemble-index.mjs
T
WaterrrForeverandClaude Opus 4.8 7cb8386539 refactor(skills): rebuild faceless-explainer + pr-to-video on the shot-sequence architecture (#1778)
* refactor(skills): rebuild faceless-explainer + pr-to-video on the shot-sequence architecture

Move both skills onto the current shot-sequence authoring architecture and
the latest shared engine, then re-narrate to each domain. The engine fixes
(pre-assembly frame guards + BGM loop-extend in assemble-index, dark-ground
caption contrast, brand-accent selection + mono role in tokens, dark-mode
polarity invert / weight-clamp / icon-font filter in build-frame) had only
landed in one copy; both skills were a generation behind.

- Authoring model: visual-design now writes a time-coded shot sequence (Scene
  windows paced to the voiceover) instead of the older effects-id phased note;
  motion-language carries the move vocabulary + the tightened motion doctrine
  (smooth over bouncy) + the seek-safe core (fromTo entrances, no CSS-transition
  motion); add cut-catalog (within-frame velocity-matched seams); frame-worker
  and SKILL Step 4/5 move to blueprint instantiation + shot-sequence fidelity.
- faceless-explainer: fold the standalone composition.md into visual-design
  (inventing-the-visual / portrait / caption geometry); keep the explainer
  story doctrine; graft cue-segmented VO + candidate-blueprint-from-Step-3.
- pr-to-video: keep the ingest pipeline (fetch-pr / ingest / fetch-people-avatars)
  and code-vocabulary; preserve the code-beat (code-* block as focal, Scenes
  choreograph the surround) and mechanism-beat treatments under the new model.
- Drop stage-assets from both (no captured assets to stage); remove derivation
  references so each skill reads standalone.

bun run scripts/lint-skills.ts passes; all scripts node --check clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* chore(skills): resync skills-manifest after format pass

The pre-commit skills-manifest hook hashed the skills before the format hook
reformatted cut-catalog.md, so the committed manifest lagged the on-disk
content and CI's "Skills: manifest in sync" check failed. Regenerated.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-30 00:02:24 +08:00

571 lines
23 KiB
JavaScript
Raw Blame History

This file contains ambiguous Unicode characters
This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.
#!/usr/bin/env node
// assemble-index.mjs — deterministic top-level index.html assembly for a
// HyperFrames project. No subagent, no judgment: turns STORYBOARD.md + the
// built frame files (+ optional audio_meta.json) into the standalone index.html
// the renderer consumes, and stages the frame-named capture assets into assets/.
//
// index.html is a *standalone* composition (root <div id="root"> directly in
// <body>, no <template> wrapper — template is for sub-comps). Structure is
// modeled on the canonical fixture packages/studio/fixtures/storyboard-sample/
// index.html and the authoritative head/audio template in
// packages/core/docs/quickstart-template.html. Frame mount order = STORYBOARD
// document order. Transitions are NOT written here — the transitions injector
// mutates this file afterward (data-start/duration/track-index + GSAP).
//
// Track lanes (same-track time-overlap is illegal — lint timeline_track_too_dense):
// 1 frame sub-comp clips (sequential; the injector 0/1-ping-pongs for overlaps)
// 2 captions sub-comp clip (full-duration overlay, on top of frames)
// 10 per-frame voice <audio>
// 11 BGM <audio>
// 20+i SFX <audio> (one lane each)
//
// audio_meta.json contract (produced by audio.mjs; OPTIONAL — absent ⇒ silent
// video, frames only). Durations come from STORYBOARD (audio sync-durations
// writes them), NOT from here; this file carries only media PATHS, keyed by
// frame number:
// { "bgm": { "path": "assets/bgm/x.mp3", "volume": 0.8 } | null,
// "voices":[ { "frame": 3, "path": "assets/voice/03.wav" } ],
// "sfx": [ { "frame": 3, "file": "assets/sfx/x.mp3", "offset_s": 0,
// "duration_s": 1.0, "volume": 0.35 } ] }
//
// Reads: --storyboard STORYBOARD.md, --hyperframes <project root>,
// [--audio-meta audio_meta.json]. On disk: each built frame's src html,
// capture/{assets,assets/videos,screenshots}/<basename> for staging, compositions/captions.html.
// Writes: <project>/index.html + stages assets/<basename> + (guard ① below)
// repairs a frame file in place when its root is missing data-width/height.
//
// Pre-assembly frame guards (run in the same pass that reads each frame, so common
// `lint` failures surface HERE instead of after assembly + a wasted render):
// ① AUTO-REPAIR — a sub-comp root missing data-width/data-height: inject the canvas
// dims (the renderer needs them on the cloned root; else lint root_missing_dimensions).
// ② HARD FAIL — <video>/<audio> inside a sub-comp: the runtime only drives media that
// is a DIRECT child of the host root, so sub-comp media renders blank/black.
// ③ HARD FAIL — a timed element (data-start+duration+track-index) that is not the root
// and lacks class="clip" (shows the whole frame), or two same-track clips that overlap.
//
// Exit 0 = index.html written + summary. Exit 1 = fatal contract break (no
// frames, a built/animated frame missing its src/file, a frame with no
// duration, an inner data-composition-id mismatch, or a guard ②/③ violation).
// No backstop: fix upstream.
import { existsSync, readFileSync, writeFileSync } from "node:fs";
import { spawnSync } from "node:child_process";
import { basename, join, resolve } from "node:path";
import { parseStoryboard } from "./lib/storyboard.mjs";
import { parseFormat } from "./lib/dimensions.mjs";
import { stageAssets } from "./lib/assets.mjs";
import { parseColors, semanticColors } from "./lib/tokens.mjs";
// ---------- argv ----------
const argv = process.argv.slice(2);
const flag = (name, def) => {
const i = argv.indexOf(`--${name}`);
return i >= 0 && i + 1 < argv.length ? argv[i + 1] : def;
};
function die(msg) {
console.error(`✗ assemble-index.mjs: ${msg}`);
process.exit(1);
}
// Ensure the BGM track is at least `total` seconds long. HeyGen (and most music
// libraries) return a short loopable clip (~1530s); mounting it at data-duration=total
// would leave the video's TAIL SILENT. If the file is short, loop-extend it to `total`
// (with a 0.4s fade-in + 1.5s fade-out) into a sibling *.loop.mp3 and return that path.
// Needs ffprobe+ffmpeg (present in the render env); degrades to the original + a warning
// when they're absent, so assembly never hard-fails on audio tooling.
function ensureBgmCovers(relPath, hyperframesDir, total) {
const abs = join(hyperframesDir, relPath);
const probe = spawnSync(
"ffprobe",
["-v", "error", "-show_entries", "format=duration", "-of", "csv=p=0", abs],
{ encoding: "utf8" },
);
if (probe.status !== 0) return { looped: false, short: false, reason: "ffprobe unavailable" };
const dur = parseFloat(String(probe.stdout || "").trim());
if (!Number.isFinite(dur) || dur <= 0)
return { looped: false, short: false, reason: "unreadable duration" };
if (dur >= total - 0.1) return { looped: false, short: false, dur }; // already covers
const relOut = relPath.replace(/\.([^./]+)$/, ".loop.$1");
const absOut = join(hyperframesDir, relOut);
const fadeOut = Math.max(0, total - 1.5);
const ff = spawnSync(
"ffmpeg",
[
"-y",
"-stream_loop",
"-1",
"-i",
abs,
"-t",
String(total),
"-af",
`afade=t=in:st=0:d=0.4,afade=t=out:st=${fadeOut}:d=1.5`,
"-c:a",
"libmp3lame",
"-q:a",
"2",
absOut,
],
{ encoding: "utf8" },
);
if (ff.status !== 0 || !existsSync(absOut))
return { looped: false, short: true, dur, reason: "ffmpeg unavailable" };
return { looped: true, rel: relOut, from: dur };
}
const hyperframesDir = resolve(flag("hyperframes", "."));
const storyboardPath = resolve(flag("storyboard", join(hyperframesDir, "STORYBOARD.md")));
const audioMetaPath = resolve(flag("audio-meta", join(hyperframesDir, "audio_meta.json")));
const outPath = resolve(flag("out", join(hyperframesDir, "index.html")));
const r3 = (x) => Math.round(x * 1000) / 1000;
const anomalies = [];
const frameErrors = []; // fatal per-frame composition violations (guards ②/③) — reported together
const repairs = []; // auto-repairs applied to frame files in place (guard ①)
// ---------- parse storyboard ----------
if (!existsSync(storyboardPath)) die(`STORYBOARD.md not found at ${storyboardPath}`);
const manifest = parseStoryboard(readFileSync(storyboardPath, "utf8"));
const { width: WIDTH, height: HEIGHT } = parseFormat(manifest.globals.format);
// ---------- per-frame composition guards (see header ①②③) ----------
// String-level checks on each frame's HTML — no DOM parse, deterministic, run in
// the same pass that already reads the file. OPEN_TAG matches one opening tag while
// tolerating quoted attribute values that contain ">" (e.g. inline styles).
const OPEN_TAG = "<([a-zA-Z][a-zA-Z0-9-]*)((?:[^>\"']|\"[^\"]*\"|'[^']*')*)>";
const attrPresent = (attrs, name) => new RegExp(`(?:^|\\s)${name}(?:[\\s=]|$)`).test(attrs);
const attrValue = (attrs, name) => {
const m = attrs.match(new RegExp(`(?:^|\\s)${name}\\s*=\\s*(?:"([^"]*)"|'([^']*)')`));
return m ? (m[1] ?? m[2]) : null;
};
// The root (or a nested-comp mount) legitimately carries timing without class="clip".
const isRootish = (attrs) =>
/(?:^|\s)id\s*=\s*["']root["']/.test(attrs) ||
attrPresent(attrs, "data-composition-id") ||
attrPresent(attrs, "data-composition-src");
// Locate the composition root opening tag: prefer id="root", else the first element
// carrying data-composition-id. Returns { start, end, full, attrs } or null.
function findRootTag(html) {
const re = new RegExp(OPEN_TAG, "g");
let m;
let firstCompId = null;
while ((m = re.exec(html))) {
const attrs = m[2];
if (/(?:^|\s)id\s*=\s*["']root["']/.test(attrs))
return { start: m.index, end: m.index + m[0].length, full: m[0], attrs };
if (attrPresent(attrs, "data-composition-id") && !firstCompId)
firstCompId = { start: m.index, end: m.index + m[0].length, full: m[0], attrs };
}
return firstCompId;
}
// Returns { errors: string[], repairedHtml: string|null, repairNote: string|null }.
function guardFrame(html, label) {
const errors = [];
// Scan a copy with comments + <script>/<style> bodies blanked, so a tag-like string
// in a comment (e.g. "<!-- match the host <video> coords -->") or in GSAP code can't
// trip ②/③. ① still splices into the ORIGINAL html, so its offsets stay correct.
const scan = html
.replace(/<!--[\s\S]*?-->/g, " ")
.replace(/<script\b[\s\S]*?<\/script[^>]*>/gi, " ")
.replace(/<style\b[\s\S]*?<\/style[^>]*>/gi, " ");
// ② media inside a sub-comp — never driven by the runtime (renders blank/black).
const media = scan.match(/<(video|audio)(?=[\s/>])/i);
if (media) {
errors.push(
`${label}: has a <${media[1].toLowerCase()}> inside the sub-composition. The runtime only drives media that is a DIRECT child of the host root (index.html) — sub-comp media renders blank/black. Move the clip to index.html as a root-level <video>/<audio> and drive any per-scene motion on the main timeline (composition-patterns.md archetype B).`,
);
}
// ③ timed-element checks: missing class="clip", and same-track window overlap.
const re = new RegExp(OPEN_TAG, "g");
const clips = [];
let m;
while ((m = re.exec(scan))) {
const attrs = m[2];
if (
!attrPresent(attrs, "data-start") ||
!attrPresent(attrs, "data-duration") ||
!attrPresent(attrs, "data-track-index")
)
continue;
if (isRootish(attrs)) continue;
if (!/(?:^|\s)class\s*=\s*["'][^"']*\bclip\b[^"']*["']/.test(attrs)) {
errors.push(
`${label}: a timed <${m[1]}> (data-start/duration/track-index) has no class="clip" — it renders for the whole frame instead of only its window. Add class="clip", or remove the timing attrs if it is a GSAP-animated element meant to be present throughout.`,
);
}
const track = attrValue(attrs, "data-track-index");
const start = parseFloat(attrValue(attrs, "data-start"));
const dur = parseFloat(attrValue(attrs, "data-duration"));
if (track != null && Number.isFinite(start) && Number.isFinite(dur))
clips.push({ track, start, end: start + dur });
}
const EPS = 1e-3; // adjacent clips that merely touch are legal
const byTrack = new Map();
for (const c of clips) {
const arr = byTrack.get(c.track);
if (arr) arr.push(c);
else byTrack.set(c.track, [c]);
}
for (const [track, list] of byTrack) {
list.sort((a, b) => a.start - b.start);
for (let i = 1; i < list.length; i++) {
if (list[i].start < list[i - 1].end - EPS) {
errors.push(
`${label}: clips on track ${track} overlap (one ends at ${r3(list[i - 1].end)}s, the next starts at ${r3(list[i].start)}s) — same-track time-overlap causes a render conflict. Put them on distinct data-track-index lanes or fix their windows.`,
);
break; // one report per track is enough
}
}
}
// ① auto-repair: ensure the root carries data-width / data-height.
let repairedHtml = null;
let repairNote = null;
const root = findRootTag(html);
if (root) {
const needW = !attrPresent(root.attrs, "data-width");
const needH = !attrPresent(root.attrs, "data-height");
if (needW || needH) {
const inject =
(needW ? ` data-width="${WIDTH}"` : "") + (needH ? ` data-height="${HEIGHT}"` : "");
const newTag = root.full.replace(/(\/?>)$/, `${inject}$1`);
repairedHtml = html.slice(0, root.start) + newTag + html.slice(root.end);
repairNote = `${label}: injected${needW ? " data-width" : ""}${needH ? " data-height" : ""} (${WIDTH}×${HEIGHT}) on the root — was missing (would lint root_missing_dimensions)`;
}
}
return { errors, repairedHtml, repairNote };
}
// ---------- resolve mountable frames in document order ----------
// A frame mounts when its src html exists on disk. A built/animated frame
// missing its src/file is a contract break (die). An outline frame with no
// file is skipped (still a placeholder) with an anomaly note.
const mounted = [];
for (const f of manifest.frames) {
const label = `frame ${f.number ?? f.index}${f.title ? ` (${f.title})` : ""}`;
const built = f.status === "built" || f.status === "animated";
if (!f.src) {
if (built) die(`${label} is ${f.status} but has no \`src\` — the orchestrator must write it`);
anomalies.push(`${label}: status ${f.status}, no src — skipped`);
continue;
}
const compAbs = join(hyperframesDir, f.src);
// Read directly and handle ENOENT here rather than an existsSync precheck — the
// check→read/write pair is a TOCTOU race CodeQL flags (js/file-system-race).
let html;
try {
html = readFileSync(compAbs, "utf8");
} catch {
if (built)
die(`${label} is ${f.status} but its src ${f.src} is not on disk — re-dispatch the worker`);
anomalies.push(`${label}: src ${f.src} not on disk (status ${f.status}) — skipped`);
continue;
}
if (!Number.isFinite(f.durationSeconds) || f.durationSeconds <= 0) {
die(
`${label}: no positive duration (got ${JSON.stringify(f.duration)}) — run audio sync-durations`,
);
}
// Host data-composition-id MUST equal the inner file's, or the runtime never
// finds the timeline. frame_id = src basename (frame-worker contract); verify
// the inner html actually declares it.
const compId = basename(f.src).replace(/\.html?$/i, "");
// Guard against blank/partial scene files: a worker that errors or is
// interrupted mid-write leaves an empty (or markup-less) file that exists but
// fails at render with "Composition HTML is empty or could not be parsed".
// Catch it here — before emitting data-composition-src — and re-dispatch.
if (!html.trim() || !/<\w/.test(html)) {
die(
`${label}: ${f.src} is empty or has no HTML — the worker wrote a blank/partial file. Re-dispatch that worker before assembling.`,
);
}
// pre-assembly guards: ① repair missing root dims in place, ②/③ collect fatal violations.
const guard = guardFrame(html, label);
if (guard.repairedHtml) {
writeFileSync(compAbs, guard.repairedHtml);
html = guard.repairedHtml;
repairs.push(guard.repairNote);
}
for (const e of guard.errors) frameErrors.push(e);
if (
!html.includes(`data-composition-id="${compId}"`) &&
!html.includes(`data-composition-id='${compId}'`)
) {
die(`${label}: ${f.src} has no data-composition-id="${compId}" (host/inner id must match)`);
}
mounted.push({ frame: f, compId, durationSeconds: r3(f.durationSeconds) });
}
if (frameErrors.length) {
die(
`${frameErrors.length} frame composition violation(s) — fix the worker output and re-assemble:\n` +
frameErrors.map((e) => ` • ${e}`).join("\n"),
);
}
if (mounted.length === 0) die("no mountable frames (none built with an on-disk src)");
// cumulative starts — emitted data-start[i] + data-duration[i] == start[i+1] by
// construction (renderer computes end the same way), so adjacent clips touch
// exactly with no float-overlap.
let acc = 0;
for (const m of mounted) {
m.start = acc;
acc += m.durationSeconds;
}
const TOTAL = r3(acc);
const startOfFrameNumber = new Map();
for (const m of mounted) if (m.frame.number != null) startOfFrameNumber.set(m.frame.number, m);
// ---------- audio_meta (optional) ----------
let audio = { bgm: null, voices: [], sfx: [] };
if (existsSync(audioMetaPath)) {
try {
const parsed = JSON.parse(readFileSync(audioMetaPath, "utf8"));
audio = { bgm: parsed.bgm ?? null, voices: parsed.voices ?? [], sfx: parsed.sfx ?? [] };
} catch (e) {
die(`audio_meta.json parse: ${e.message}`);
}
}
const voiceByFrame = new Map();
for (const v of audio.voices) if (v.frame != null) voiceByFrame.set(v.frame, v);
// ---------- build <body> in track order ----------
const body = [];
let voiceCount = 0;
for (const m of mounted) {
// (track 1) frame sub-comp clip — no class="clip" semantics needed; .scene CSS sizes it.
body.push(
` <div`,
` id="el-${m.compId}"`,
` class="scene"`,
` data-composition-id="${m.compId}"`,
` data-composition-src="${m.frame.src}"`,
` data-start="${m.start}"`,
` data-duration="${m.durationSeconds}"`,
` data-track-index="1"`,
` ></div>`,
);
// (track 10) voice — only when the file is actually on disk.
const v = m.frame.number != null ? voiceByFrame.get(m.frame.number) : undefined;
if (v?.path) {
if (existsSync(join(hyperframesDir, v.path))) {
body.push(
` <audio`,
` id="el-${m.compId}-voice"`,
` src="${v.path}"`,
` data-start="${m.start}"`,
` data-duration="${m.durationSeconds}"`,
` data-track-index="10"`,
` data-volume="1"`,
` ></audio>`,
);
voiceCount++;
} else {
anomalies.push(`${m.compId}: voice ${v.path} not on disk — skipped`);
}
}
body.push("");
}
// (track 11) BGM — duck under narration when any voice is present. Loop-extend a short
// track to the full video length so the tail isn't silent (libraries return ~1530s clips).
let bgmEmitted = false;
let bgmNote = "";
if (audio.bgm?.path) {
if (existsSync(join(hyperframesDir, audio.bgm.path))) {
let bgmSrc = audio.bgm.path;
const cov = ensureBgmCovers(audio.bgm.path, hyperframesDir, TOTAL);
if (cov.looped) {
bgmSrc = cov.rel;
bgmNote = ` (looped ${cov.from.toFixed(1)}s→${TOTAL}s)`;
} else if (cov.short) {
anomalies.push(
`bgm is ${cov.dur?.toFixed?.(1) ?? "?"}s (< ${TOTAL}s) and could not be extended (${cov.reason}) — the tail will be silent; install ffmpeg`,
);
}
const vol = audio.bgm.volume != null ? audio.bgm.volume : voiceCount > 0 ? 0.8 : 0.9;
body.push(
` <!-- BGM -->`,
` <audio`,
` id="el-bgm"`,
` src="${bgmSrc}"`,
` data-start="0"`,
` data-duration="${TOTAL}"`,
` data-track-index="11"`,
` data-volume="${vol}"`,
` ></audio>`,
"",
);
bgmEmitted = true;
} else {
anomalies.push(`bgm ${audio.bgm.path} not on disk — skipped`);
}
}
// (track 2) captions — captions.mjs writes this or legally skips; key off existence.
let captionsEmitted = false;
if (existsSync(join(hyperframesDir, "compositions/captions.html"))) {
body.push(
` <!-- captions -->`,
` <div`,
` id="el-captions"`,
` class="scene"`,
` data-composition-id="captions"`,
` data-composition-src="compositions/captions.html"`,
` data-start="0"`,
` data-duration="${TOTAL}"`,
` data-track-index="2"`,
` ></div>`,
"",
);
captionsEmitted = true;
}
// (track 20+i) SFX — placed at its frame's start + offset.
let sfxEmitted = 0;
audio.sfx.forEach((cue, i) => {
const host = cue.frame != null ? startOfFrameNumber.get(cue.frame) : undefined;
if (!host) {
anomalies.push(`sfx ${cue.file}: frame ${cue.frame} not mounted — skipped`);
return;
}
const rel = cue.file;
if (!existsSync(join(hyperframesDir, rel))) {
anomalies.push(`sfx ${rel} not on disk — skipped`);
return;
}
const t = r3(host.start + (cue.offset_s ?? 0));
const dur = r3(cue.duration_s ?? 1);
const vol = cue.volume != null ? cue.volume : 0.35;
if (sfxEmitted === 0) body.push(` <!-- SFX -->`);
body.push(
` <audio`,
` id="el-sfx-${i}"`,
` src="${rel}"`,
` data-start="${t}"`,
` data-duration="${dur}"`,
` data-track-index="${20 + i}"`,
` data-volume="${vol}"`,
` ></audio>`,
);
sfxEmitted++;
});
// ---------- stage frame-named assets: capture/ → assets/ (idempotent backstop) ----------
// Frame workers + the live preview reference assets/<basename>; stage-assets.mjs
// already ran this at Step 4 close. Re-run as a backstop so a late-named asset
// still lands. Shared logic: lib/assets.mjs (first-wins, safe to call twice).
const {
staged,
wanted,
anomalies: assetAnomalies,
} = stageAssets({
hyperframesDir,
frames: manifest.frames,
});
for (const a of assetAnomalies) anomalies.push(a);
// ---------- <head> ----------
// ---------- ground color ----------
// Per-frame roots carry data-start/data-duration and get clip-gated against the
// global timeline in render (only the first frame's [0,dur] window overlaps global
// 0), so a frame's own full-bleed background can't be relied on as the video ground —
// every frame after the first would render on the bare body color (black). Paint the
// ground on the always-present root composition instead, using the project's frame.md
// canvas color (the same ground role the caption skin maps to --cap-canvas). Falls
// back to the body letterbox color when frame.md is absent or has no resolvable ground.
const framePath = join(hyperframesDir, "frame.md");
let groundColor = null;
if (existsSync(framePath)) {
try {
const roles = semanticColors(parseColors(readFileSync(framePath, "utf8")));
if (roles && roles.canvas) groundColor = roles.canvas;
} catch {
/* leave groundColor null — #root stays transparent over the body letterbox */
}
}
const headStyle = [
" * {",
" margin: 0;",
" padding: 0;",
" box-sizing: border-box;",
" }",
" html,",
" body {",
` width: ${WIDTH}px;`,
` height: ${HEIGHT}px;`,
" overflow: hidden;",
" background: #000;",
" }",
" #root {",
" position: relative;",
` width: ${WIDTH}px;`,
` height: ${HEIGHT}px;`,
" overflow: hidden;",
...(groundColor ? [` background: ${groundColor};`] : []),
" }",
" .scene {",
" position: absolute;",
" inset: 0;",
" width: 100%;",
" height: 100%;",
" }",
].join("\n");
const html = `<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=${WIDTH}, height=${HEIGHT}" />
<script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
<style>
${headStyle}
</style>
</head>
<body>
<div
id="root"
data-composition-id="main"
data-start="0"
data-duration="${TOTAL}"
data-width="${WIDTH}"
data-height="${HEIGHT}"
>
${body.join("\n")}
</div>
<script>
window.__timelines = window.__timelines || {};
window.__timelines["main"] = gsap.timeline({ paused: true });
</script>
</body>
</html>
`;
writeFileSync(outPath, html);
// ---------- summary ----------
console.log(`✓ wrote ${outPath}`);
console.log(` canvas: ${WIDTH}×${HEIGHT}`);
console.log(` frames (track 1): ${mounted.length}`);
console.log(` voice (track 10): ${voiceCount}`);
console.log(` bgm (track 11): ${bgmEmitted ? "yes" + bgmNote : "no"}`);
console.log(` captions (track 2): ${captionsEmitted ? "yes" : "no"}`);
console.log(` sfx (track 20+): ${sfxEmitted}`);
console.log(` assets staged: ${staged}/${wanted.size}`);
console.log(` total duration: ${TOTAL}s`);
if (repairs.length) {
console.log(`\nrepaired (frame files updated in place):`);
for (const rp of repairs) console.log(` - ${rp}`);
}
if (anomalies.length) {
console.log(`\nanomalies (non-fatal):`);
for (const a of anomalies) console.log(` - ${a}`);
}