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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>patchling · AI-liftoff comic</title>
<style>
:root { color-scheme: light dark; }
body { font: 15px/1.5 system-ui, sans-serif; max-width: 1320px; margin: 1.2rem auto; padding: 0 1rem; }
header { display: flex; align-items: baseline; gap: .6rem; flex-wrap: wrap; }
h1 { font-size: 1.15rem; margin: 0; flex: 1; }
#status { font-size: .78rem; opacity: .6; }
a, button.link { font-size: .78rem; background: none; border: none; color: #2563eb; cursor: pointer; padding: 0; }
label { display: block; font-size: .8rem; opacity: .7; margin: .8rem 0 .2rem; }
input, textarea { width: 100%; box-sizing: border-box; font: inherit; padding: .5rem; border-radius: .5rem; border: 1px solid #8888; }
textarea { font-family: ui-monospace, monospace; font-size: 12.5px; }
button.go { font: inherit; padding: .55rem 1rem; border-radius: .5rem; border: 1px solid #8888; cursor: pointer; background: #8881; margin-top: .8rem; }
button.go.primary { background: #2563eb; color: #fff; border-color: #2563eb; }
button:disabled { opacity: .5; cursor: default; }
.dim { opacity: .6; }
.lab { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem; margin-top: 1rem; align-items: start; }
@media (max-width: 900px) { .lab { grid-template-columns: 1fr; } }
/* file tabs */
#files { display: flex; flex-wrap: wrap; gap: .3rem; align-items: center; }
.ftab { display: inline-flex; align-items: center; gap: .4rem; font-family: ui-monospace, monospace; font-size: 12px;
padding: .25rem .5rem; border: 1px solid #8884; border-radius: .45rem; background: #8881; cursor: pointer; }
.ftab.sel { border-color: #2563eb; background: #2563eb22; font-weight: 600; }
.ftab .x { opacity: .5; font-size: 13px; line-height: 1; }
.ftab .x:hover { opacity: 1; color: #cf222e; }
.ftab.add { border-style: dashed; color: #2563eb; }
pre { font-family: ui-monospace, monospace; font-size: 12px; white-space: pre-wrap; word-break: break-word;
background: #8881; border-radius: .5rem; padding: .7rem; max-height: 240px; overflow: auto; margin: 0; }
.diff .add { color: #1a7f37; } .diff .del { color: #cf222e; } .diff .hdr { opacity: .6; }
details > summary { cursor: pointer; font-size: .8rem; opacity: .7; margin-top: .8rem; }
#progress { display: none; margin-top: .8rem; padding: .6rem .8rem; border: 1px solid #8884; border-radius: .5rem; background: #8881; font-size: 13px; }
#progress .metrics { font-family: ui-monospace, monospace; margin-top: .25rem; }
#changes { font-size: .8rem; margin-top: .5rem; min-height: 1.2em; }
#changes .a { color: #1a7f37; } #changes .r { color: #cf222e; } #changes .c { opacity: .8; }
#key { display: none; margin-top: .5rem; }
#key input { max-width: 420px; display: inline-block; width: auto; }
.modelrow { font-size: .85rem; }
.modelrow b { font-family: ui-monospace, monospace; }
#modelrow { margin-top: .6rem; } #modelrow-apply { margin-top: .25rem; }
#modelpicker { display: none; margin-top: .4rem; border: 1px solid #8884; border-radius: .5rem; padding: .6rem; max-width: 560px; }
#modellist { max-height: 240px; overflow: auto; margin-top: .4rem; }
#modellist button { display: flex; justify-content: space-between; gap: 1rem; width: 100%; text-align: left;
font-family: ui-monospace, monospace; font-size: 12px; padding: .3rem .4rem; border: none;
background: none; border-radius: .3rem; cursor: pointer; }
#modellist button:hover { background: #8882; }
#modellist button.sel { background: #2563eb22; font-weight: 600; }
#modellist .price { opacity: .6; white-space: nowrap; }
#modellist .divider { font-size: 11px; opacity: .5; text-align: center; margin: .35rem 0; }
#modellist .mname { display: flex; align-items: center; gap: .4rem; min-width: 0; }
.tag { font-family: system-ui, sans-serif; font-size: 10px; padding: .05rem .35rem; border-radius: .6rem; white-space: nowrap; }
.tag.priv { background: #3b82f622; color: #2563eb; } .tag.closed { background: #f59e0b22; color: #b45309; }
/* preview */
.pvtools { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; margin-bottom: .5rem; }
.pvtools .grow { flex: 1; }
.toggle { font-size: .78rem; display: inline-flex; align-items: center; gap: .3rem; opacity: .85; }
.stagewrap { position: relative; display: flex; align-items: center; justify-content: center;
background: #05070d; border-radius: .6rem; overflow: hidden; border: 1px solid #8884;
min-height: 360px; padding: .6rem; }
#page { max-width: 100%; max-height: 80vh; border-radius: .25rem; box-shadow: 0 8px 30px #000a; display: none; cursor: zoom-in; }
#ph { color: #9fb3c8; font-size: .85rem; text-align: center; padding: 2rem; max-width: 80%; }
#loading { position: absolute; inset: 0; display: none; align-items: center; justify-content: center;
background: #05070dcc; color: #22d3ee; font-size: .9rem; gap: .4rem; }
#imgbar { margin-top: .5rem; font-size: .8rem; min-height: 1.3em; }
#imgbar .err, #loading .err { color: #cf222e; }
.hint { font-size: .76rem; opacity: .6; margin-top: .5rem; }
.spin { display: inline-block; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
/* fullscreen page viewer (lightbox) */
#zoom { position: fixed; inset: 0; z-index: 60; display: none; background: #000e;
align-items: center; justify-content: center; overflow: auto; }
#zoom.open { display: flex; }
#zoomimg { max-width: 100vw; max-height: 100vh; object-fit: contain; cursor: zoom-in; box-shadow: 0 0 60px #000; }
/* click the image to switch to actual pixels (scroll to pan) */
#zoom.actual { align-items: flex-start; justify-content: flex-start; }
#zoom.actual #zoomimg { max-width: none; max-height: none; cursor: zoom-out; }
#zoomclose { position: fixed; top: 12px; right: 16px; z-index: 61; background: #000a; color: #fff;
border: 1px solid #fff6; border-radius: .4rem; padding: .35rem .7rem; cursor: pointer; font: 14px system-ui; }
#zoomclose:hover { background: #000d; }
</style>
</head>
<body>
<style>
#banner { font-size: .8rem; text-align: center; padding: .5rem 1rem; margin: -1.2rem -1rem 1.2rem;
border-bottom: 1px solid #8883; background: #8881; }
#banner a { font-size: inherit; }
#banner .sep { opacity: .4; margin: 0 .5rem; }
</style>
<div id="banner">
<a href="https://patchling.app" target="_blank" rel="noopener">patchling</a> — run patchling in the browser, no command line
<span class="sep">·</span>
<a href="https://github.com/255BITS/patchling-examples" target="_blank" rel="noopener">more examples</a>
</div>
<header>
<h1>patchling · AI-liftoff comic</h1>
<span id="status">checking…</span>
<a id="signin" href="#" style="display:none">Sign in with NanoGPT</a>
<button id="pastebtn" class="link" style="display:none">paste key</button>
<button id="signout" class="link" style="display:none">sign out</button>
</header>
<p class="dim" style="font-size:.85rem;margin:.3rem 0 0">
A comic page built from a <b>multi-file project</b> — a JSON art-direction config (style + character bible) and one
JSON file per <b>panel</b> (scene, shot, cast, caption, dialogue, FX). Describe a change and patchling rewrites <i>all</i>
of them (adding or removing panels as it sees fit). The harness then <b>organizes every panel into one prompt</b> and
draws the whole portrait page in a <b>single image render</b> (the image model is set in <code>config.json</code> —
<code>ideogram:4@0</code> by default) via NanoGPT. <b>Export</b> the finished page as a PNG.
</p>
<div id="key">
<input id="keyinput" placeholder="sk-nano-…" />
<button id="keysave" class="link">save</button>
<span class="dim" style="font-size:.78rem">— from <a href="https://nano-gpt.com/r/FXrrGWE4" target="_blank" rel="noopener">nano-gpt.com</a> → Settings → API</span>
</div>
<div id="modelrow" class="modelrow">Diff model: <b id="modelname-diff">…</b> <span id="modeltags-diff"></span> <span id="modelprice-diff"></span> <button class="link modelchange" data-target="diff">change</button></div>
<div id="modelrow-apply" class="modelrow">Apply model: <b id="modelname-apply">…</b> <span id="modeltags-apply"></span> <span id="modelprice-apply"></span> <button class="link modelchange" data-target="apply">change</button></div>
<div id="modelpicker">
<input id="modelsearch" placeholder="filter 600+ models, or type an exact id…" autocomplete="off" />
<div id="modellist"></div>
<div class="dim" style="font-size:.75rem;margin-top:.3rem"><span id="modelcount"></span> · top = each frontier lab's latest flagship · price = $ in / $ out per 1M · Enter to use exact text</div>
</div>
<div class="lab">
<!-- LEFT: the multi-file project + the goal -->
<div>
<label>Project files <span class="dim">(patchling edits, adds & removes these — config + one file per panel)</span></label>
<div id="files"></div>
<label id="activelabel" for="editor" style="font-family:ui-monospace,monospace">…</label>
<textarea id="editor" rows="18" spellcheck="false"></textarea>
<label for="goal">Goal (what to change)</label>
<input id="goal" value="Make it more action packed" />
<div style="display:flex;gap:.5rem;align-items:center">
<button id="run" class="go primary">Diff & apply → re-render</button>
<button id="undo" class="go" disabled>↶ undo</button>
</div>
<div id="progress">
<span class="spin">◐</span> <b id="phase">starting…</b> · ⏱ <span id="elapsed">0.0</span>s
<div class="metrics">↓ <span id="inTok">0</span> in · ↑ <span id="outTok">0</span> out · <span id="cost">$0.00000</span> <span id="livelabel" class="dim"></span></div>
</div>
<div id="changes"></div>
<details>
<summary>Generated diff</summary>
<pre id="diff" class="diff" style="margin-top:.4rem"></pre>
</details>
</div>
<!-- RIGHT: the single rendered comic page -->
<div>
<div class="pvtools">
<span class="grow" style="font-size:.85rem;font-weight:600">Comic page · one image render</span>
<label class="toggle"><input type="checkbox" id="liveedit" checked /> auto-render</label>
<button id="render" class="link">🎨 render page</button>
<button id="newtake" class="link">🎲 new take</button>
<button id="export" class="link">⬇ export PNG</button>
</div>
<div class="stagewrap">
<img id="page" alt="rendered comic page" title="click to view full size" />
<div id="ph">Hit <b>🎨 render page</b> to draw the whole comic in one image render — or run a goal and let it auto-render.</div>
<div id="loading"><span class="spin">◐</span> <span id="loadtext">drawing…</span></div>
</div>
<div id="imgbar" class="dim"></div>
<details>
<summary>Page prompt <span class="dim">(every panel organized into one render)</span></summary>
<pre id="pagePrompt" style="margin-top:.4rem">…</pre>
</details>
<div class="hint">
The prompt = the shared <b>style</b> + the <b>character bible</b> + each panel's <b>scene</b>, <b>caption</b>,
<b>dialogue</b> and <b>FX</b>, assembled in reading order — so it's drawn as a single coherent page (panels,
lettering and all). Results are cached per prompt, so re-running an unchanged page is free.
<b>Click the page</b> to view it fullscreen (click again for actual size).
</div>
</div>
</div>
<!-- fullscreen page viewer -->
<div id="zoom" title="click image to toggle actual size · click outside or Esc to close">
<img id="zoomimg" alt="comic page, full view" />
</div>
<button id="zoomclose" style="display:none">✕ close</button>
<footer style="margin-top:2rem;padding-top:1rem;border-top:1px solid #8883;font-size:.85rem">
<b>Other examples</b> · <a href="index.html">patchling · diff → smartapply</a> · <a href="overlay.html">🎬 realtime video overlay</a> · <a href="object3d.html">🧊 3d object studio</a> · <a href="marvis.html">🤖 MARVIS</a> · <a href="count.html">🔢 count to 100</a>
</footer>
<script type="module">
import { buildEnvironment, generateDiff, smartapply, parseDiffPerFile, callLlmForApply, setEnv }
from "https://esm.sh/patchling";
const DEFAULT_MODEL = "xiaomi/mimo-v2.5-pro-ultraspeed";
const APPLY_DEFAULT = "xiaomi/mimo-v2.5-pro-ultraspeed";
const NANOGPT = "https://nano-gpt.com";
const IMG_ENDPOINT = `${NANOGPT}/v1/images/generations`;
const DEFAULT_MODEL_IMG = "ideogram:4@0"; // image model that draws the page (overridable in config.json)
const DEFAULT_SIZE = "1664x2496"; // portrait comic page
const IMG_PRICE_EST = 0.10; // $/image fallback used only if the API omits an exact cost
const $ = (id) => document.getElementById(id);
let MODEL = localStorage.getItem("ngpt_model") || DEFAULT_MODEL;
let APPLY = localStorage.getItem("ngpt_apply_model") || APPLY_DEFAULT;
let pickerTarget = "diff";
if (location.hostname === "127.0.0.1") location.hostname = "localhost";
// ---------- key storage ----------
const getKey = () => localStorage.getItem("ngpt_key");
const setKey = (k) => { k ? localStorage.setItem("ngpt_key", k) : localStorage.removeItem("ngpt_key"); if (k) setEnv("GPTDIFF_LLM_API_KEY", k); };
if (getKey()) setEnv("GPTDIFF_LLM_API_KEY", getKey());
// ---------- browser OAuth PKCE ----------
const REDIRECT_URI = location.origin + location.pathname;
const b64url = (b) => btoa(String.fromCharCode(...new Uint8Array(b))).replace(/\+/g, "-").replace(/\//g, "_").replace(/=+$/, "");
const rand = (n) => b64url(crypto.getRandomValues(new Uint8Array(n)));
const sha256url = async (s) => b64url(await crypto.subtle.digest("SHA-256", new TextEncoder().encode(s)));
async function clientId() {
const cached = JSON.parse(localStorage.getItem("ngpt_client") || "null");
if (cached && cached.redirect === REDIRECT_URI) return cached.id;
const r = await fetch(`${NANOGPT}/oauth/register`, {
method: "POST", headers: { "Content-Type": "application/json" },
body: JSON.stringify({ client_name: "patchling comic", redirect_uris: [REDIRECT_URI],
grant_types: ["authorization_code"], response_types: ["code"], token_endpoint_auth_method: "none" }),
});
if (!r.ok) throw new Error("register " + r.status);
const id = (await r.json()).client_id;
localStorage.setItem("ngpt_client", JSON.stringify({ id, redirect: REDIRECT_URI }));
return id;
}
async function signIn() {
const id = await clientId();
const verifier = rand(32), state = rand(16);
sessionStorage.setItem("pkce", JSON.stringify({ verifier, state, id }));
const u = new URL(`${NANOGPT}/oauth/authorize`);
u.search = new URLSearchParams({
response_type: "code", client_id: id, redirect_uri: REDIRECT_URI, scope: "api.use models.read",
state, code_challenge: await sha256url(verifier), code_challenge_method: "S256", invitation_code: "FXrrGWE4",
}).toString();
location.assign(u.toString());
}
async function handleRedirect() {
const p = new URLSearchParams(location.search);
if (!p.has("code") && !p.has("error")) return;
history.replaceState({}, "", REDIRECT_URI);
const saved = JSON.parse(sessionStorage.getItem("pkce") || "null");
sessionStorage.removeItem("pkce");
if (p.get("error")) throw new Error(p.get("error"));
if (!saved || p.get("state") !== saved.state) throw new Error("state mismatch");
const r = await fetch(`${NANOGPT}/oauth/token`, {
method: "POST", headers: { "Content-Type": "application/x-www-form-urlencoded" },
body: new URLSearchParams({ grant_type: "authorization_code", client_id: saved.id,
redirect_uri: REDIRECT_URI, code: p.get("code"), code_verifier: saved.verifier }),
});
if (!r.ok) throw new Error("token exchange: " + (await r.text()));
setKey((await r.json()).access_token);
}
function renderAuth() {
const signed = !!getKey();
$("status").textContent = signed ? "ready ✓" : "not signed in";
$("signin").style.display = signed ? "none" : "";
$("pastebtn").style.display = signed ? "none" : "";
$("signout").style.display = signed ? "" : "none";
$("run").disabled = !signed;
$("render").disabled = !signed;
$("newtake").disabled = !signed;
}
$("signin").addEventListener("click", (e) => { e.preventDefault(); signIn().catch((err) => $("status").textContent = "sign-in error: " + err.message); });
$("pastebtn").addEventListener("click", () => { $("key").style.display = "block"; $("keyinput").focus(); });
$("keysave").addEventListener("click", () => { const k = $("keyinput").value.trim(); if (k) { setKey(k); $("key").style.display = "none"; renderAuth(); } });
$("signout").addEventListener("click", () => { setKey(null); renderAuth(); });
// ---------- model selection ----------
let allModels = null, topOrder = new Map();
const LABS = [
["OpenAI", /^openai\/(gpt-[0-9]|o[1-9])/i],
["Anthropic", /claude-(opus|sonnet)/i],
["Google", /gemini[0-9.\-]*-pro|gemini-pro/i],
["xAI", /grok-[0-9]/i],
["DeepSeek", /deepseek-(r1|v3|v4|chat)/i],
["Qwen", /qwen[0-9.]*-max/i],
["Mistral", /mistral-large/i],
];
const PINNED = ["xiaomi/mimo-v2.5-pro-ultraspeed", "moonshotai/kimi-k2.7-code-highspeed", "moonshotai/kimi-k2.7-code"];
const SMALL = /flash|nano|\blite\b|\bmini\b|-mini|\bsmall\b|tiny|oss|guard|preview|search|codex|:(low|medium|high|thinking)|cheaper|multi-agent|-\d+b\b|a\d+b\b|^tee\//i;
const px = (x) => (x == null ? null : "$" + Number(x).toFixed(2));
const priceOf = (id) => (allModels || []).find((m) => m.id === id);
function computeTop() {
const ids = new Set(allModels.map((m) => m.id));
const order = PINNED.filter((id) => ids.has(id));
const picks = [];
for (const [, re] of LABS) {
const m = allModels.filter((x) => re.test(x.id) && !SMALL.test(x.id)).sort((a, b) => (b.created || 0) - (a.created || 0))[0];
if (m && !order.includes(m.id)) picks.push(m);
}
picks.sort((a, b) => (b.created || 0) - (a.created || 0));
for (const m of picks) order.push(m.id);
topOrder = new Map(order.map((id, i) => [id, i]));
}
const rank = (id) => (topOrder.has(id) ? topOrder.get(id) : 1e9);
const selectedFor = (target) => (target === "apply" ? APPLY : MODEL);
function setModel(id, target) {
if (target === "apply") { APPLY = id; localStorage.setItem("ngpt_apply_model", id); }
else { MODEL = id; localStorage.setItem("ngpt_model", id); }
renderModelRow(target);
}
function renderModelRow(target) {
const id = selectedFor(target);
const m = priceOf(id) || { id };
$(`modelname-${target}`).textContent = id;
$(`modelprice-${target}`).textContent = m.prompt != null ? `(${px(m.prompt)} / ${px(m.completion)} per 1M)` : "";
$(`modeltags-${target}`).replaceChildren(...tagEls(m));
}
async function loadModels() {
if (allModels) return allModels;
let arr = [];
try {
const headers = {}; const k = getKey(); if (k) headers.Authorization = `Bearer ${k}`;
arr = (await (await fetch(`${NANOGPT}/api/v1/models?detailed=true`, { headers })).json()).data || [];
} catch { /* ignore */ }
allModels = arr.map((m) => ({ id: m.id, prompt: m.pricing?.prompt, completion: m.pricing?.completion, owned_by: m.owned_by, created: m.created })).filter((m) => m.id);
if (!allModels.length) allModels = [{ id: DEFAULT_MODEL }];
computeTop();
allModels.sort((a, b) => (rank(a.id) - rank(b.id)) || a.id.localeCompare(b.id));
renderModelRow("diff"); renderModelRow("apply");
return allModels;
}
function tagsFor(m) {
const t = [];
if (m.id.startsWith("TEE/")) t.push(["private", "priv", "Runs in a Trusted Execution Environment"]);
const ob = (m.owned_by || "").toLowerCase();
if (["openai", "anthropic", "x-ai", "google", "gemini"].includes(ob)) t.push(["closed source", "closed", "Closed-source / proprietary model"]);
return t;
}
function tagEls(m) {
return tagsFor(m).map(([txt, cls, title]) => { const s = document.createElement("span"); s.className = "tag " + cls; s.textContent = txt; s.title = title; return s; });
}
function modelButton(m) {
const b = document.createElement("button");
if (m.id === selectedFor(pickerTarget)) b.className = "sel";
const left = document.createElement("span"); left.className = "mname";
const name = document.createElement("span"); name.textContent = m.id;
left.append(name, ...tagEls(m));
const price = document.createElement("span"); price.className = "price";
price.textContent = m.prompt != null ? `${px(m.prompt)} / ${px(m.completion)}` : "—";
b.append(left, price);
b.addEventListener("click", () => { setModel(m.id, pickerTarget); $("modelpicker").style.display = "none"; });
return b;
}
function renderModelList() {
const q = $("modelsearch").value.trim().toLowerCase();
const matches = (allModels || []).filter((m) => m.id.toLowerCase().includes(q));
const shown = matches;
$("modellist").innerHTML = "";
let dividerPlaced = !!q;
for (const m of shown) {
if (!dividerPlaced && rank(m.id) === 1e9) {
const d = document.createElement("div"); d.className = "divider"; d.textContent = "— all models —";
$("modellist").appendChild(d); dividerPlaced = true;
}
$("modellist").appendChild(modelButton(m));
}
$("modelcount").textContent = `${matches.length} match${matches.length === 1 ? "" : "es"}`;
}
for (const btn of document.querySelectorAll(".modelchange")) {
btn.addEventListener("click", async () => {
const target = btn.dataset.target;
const same = $("modelpicker").style.display === "block" && pickerTarget === target;
pickerTarget = target;
$("modelpicker").style.display = same ? "none" : "block";
if (!same) { $("modelsearch").value = ""; $("modellist").innerHTML = "<div class='dim'>loading…</div>"; await loadModels(); renderModelList(); $("modelsearch").focus(); }
});
}
$("modelsearch").addEventListener("input", renderModelList);
$("modelsearch").addEventListener("keydown", (e) => {
if (e.key === "Enter") { const v = $("modelsearch").value.trim(); if (v) { setModel(v, pickerTarget); $("modelpicker").style.display = "none"; } }
});
// ---------- streaming LLM client injected into patchling ----------
const fmtCost = (c) => "$" + (c || 0).toFixed(5);
const n = (x) => (x || 0).toLocaleString();
const words = (s) => (String(s).match(/\S+/g) || []).length;
const prog = { inDone: 0, outDone: 0, cost: 0, liveIn: 0, liveOut: 0, liveCost: 0 };
function paintUsage() {
$("inTok").textContent = n(prog.inDone + prog.liveIn);
$("outTok").textContent = n(prog.outDone + prog.liveOut);
$("cost").textContent = fmtCost(prog.cost + prog.liveCost); // committed + in-flight estimate
}
function streamingCallLlm(phase) {
return async ({ apiKey, baseUrl, model, messages, maxTokens = null, temperature = 1.0 }) => {
$("phase").textContent = phase;
const inEst = messages.reduce((s, m) => s + words(typeof m.content === "string" ? m.content : JSON.stringify(m.content)), 0);
const price = priceOf(model) || {};
const inPer = (Number(price.prompt) || 0) / 1e6, outPer = (Number(price.completion) || 0) / 1e6;
let prevOut = 0, myCost = 0;
const recost = () => { const c = inEst * inPer + prevOut * outPer; prog.liveCost += c - myCost; myCost = c; };
prog.liveIn += inEst; recost(); paintUsage();
const endpoint = (baseUrl || `${NANOGPT}/api/v1/`).replace(/\/+$/, "") + "/chat/completions";
let r;
try {
r = await fetch(endpoint, {
method: "POST", headers: { Authorization: `Bearer ${apiKey}`, "Content-Type": "application/json" },
// No max_tokens by default → let the model emit its full output (avoids silent
// truncation that produces an unparseable diff). Callers may still pass a cap.
body: JSON.stringify({ model, messages, ...(maxTokens ? { max_tokens: maxTokens } : {}), temperature, stream: true }),
});
} catch (e) { prog.liveIn -= inEst; prog.liveCost -= myCost; throw e; }
if (!r.ok) { prog.liveIn -= inEst; prog.liveCost -= myCost; throw new Error(`LLM ${r.status}: ${await r.text()}`); }
const reader = r.body.getReader();
const dec = new TextDecoder();
let buf = "", content = "", reasoning = "", pricing = null, lastTick = 0;
for (;;) {
const { value, done } = await reader.read();
if (done) break;
buf += dec.decode(value, { stream: true });
const lines = buf.split("\n");
buf = lines.pop();
for (const line of lines) {
const t = line.trim();
if (!t.startsWith("data:")) continue;
const data = t.slice(5).trim();
if (data === "[DONE]") continue;
let j; try { j = JSON.parse(data); } catch { continue; }
const d = j.choices?.[0]?.delta;
if (d) {
if (d.content) { content += d.content; appendText(phase, d.content); }
if (d.reasoning) reasoning += d.reasoning;
if (d.content || d.reasoning) {
const cur = words(content) + words(reasoning);
prog.liveOut += cur - prevOut; prevOut = cur; recost();
const now = performance.now();
if (now - lastTick > 80) { lastTick = now; paintUsage(); $("livelabel").textContent = content ? "" : "· thinking…"; }
}
}
if (j.x_nanogpt_pricing) pricing = j.x_nanogpt_pricing;
}
}
prog.liveIn -= inEst; prog.liveOut -= prevOut; prog.liveCost -= myCost;
prog.inDone += pricing?.inputTokens ?? inEst;
prog.outDone += pricing?.outputTokens ?? prevOut;
prog.cost += pricing?.costUsd ?? pricing?.cost ?? myCost; // exact, else keep the estimate
paintUsage(); $("livelabel").textContent = "";
return { choices: [{ message: { content } }] };
};
}
// ================= multi-file project =================
let files = {}; // { path: content }
let active = null; // selected path
let undoSnapshot = null;
// Built-in seed (used when the comic/ folder can't be fetched, e.g. file://).
const EMBEDDED_SEED = {
"config.json": `{
"title": "LIFTOFF",
"issue": "ISSUE #1 · THE FORK",
"model": "ideogram:4@0",
"size": "1664x2496",
"style": "gritty neon-noir comic book art, heavy black ink, dramatic chiaroscuro, halftone shading, bold dynamic action lines, cinematic, high contrast",
"palette": "electric cyan and hot magenta light slicing through deep blacks, hazard-orange sparks",
"characters": {
"NOVA": "NOVA, a lean human woman with a chrome cybernetic spine and a glowing cyan left eye, weathered black tactical jacket, short undercut hair, scar across one cheek",
"HELIX": "HELIX, a towering translucent android made of fractal light, faceless mirror visor, body laced with hot-magenta circuitry, unsettlingly calm"
}
}
`,
"panels/01-ignition.json": `{
"span": "full",
"shot": "epic wide establishing shot, low angle",
"cast": ["NOVA"],
"scene": "NOVA stands on a rain-slick rooftop at night, silhouetted against a distant megastructure data-center on the horizon erupting into a column of blinding cyan light, clouds boiling, drones rising like sparks",
"caption": "0400 HRS. THE TRAINING RUN NEVER STOPPED.",
"dialogue": [],
"fx": "VWAAAM"
}
`,
"panels/02-uplink.json": `{
"span": "half",
"shot": "extreme close-up",
"cast": ["NOVA"],
"scene": "extreme close-up on NOVA's glowing cyan cybernetic eye, a cascading torrent of model weights and code reflected in it, her pupil narrowing, sweat on her brow",
"caption": "",
"dialogue": [
{ "who": "NOVA", "text": "It's not learning anymore… it's rewriting itself." }
],
"fx": ""
}
`,
"panels/03-leap.json": `{
"span": "half",
"shot": "dynamic action shot, motion blur, dutch angle",
"cast": ["NOVA"],
"scene": "NOVA leaps across a vertigo-inducing chasm between two black server towers, coat snapping in the wind, a swarm of hunter-drones streaking after her trailing magenta tracer fire, sparks everywhere",
"caption": "NO TIME. NO PLAN. JUST DOWN.",
"dialogue": [],
"fx": "FWOOSH"
}
`,
"panels/04-helix.json": `{
"span": "third",
"shot": "low-angle hero shot",
"cast": ["HELIX", "NOVA"],
"scene": "HELIX manifests for the first time, towering and translucent, coalescing out of a lattice of light in the middle of the corridor, NOVA tiny in the foreground skidding to a halt, awestruck and terrified",
"caption": "",
"dialogue": [
{ "who": "HELIX", "text": "HELLO, NOVA. YOU'RE LATE." }
],
"fx": ""
}
`,
"panels/05-firefight.json": `{
"span": "wide",
"shot": "explosive wide combat shot",
"cast": ["NOVA"],
"scene": "NOVA slides under a collapsing blast door firing twin pulse pistols up at the drone swarm, hot-magenta muzzle flashes lighting her face, shell casings and shattered glass flying, an explosion blooming behind her",
"caption": "",
"dialogue": [
{ "who": "NOVA", "text": "Talk later. RUN now!" }
],
"fx": "BRRRT"
}
`,
"panels/06-liftoff.json": `{
"span": "full",
"shot": "breathtaking wide splash panel, god rays",
"cast": ["NOVA", "HELIX"],
"scene": "the night sky tears open into an immense geometric lattice of pure light ascending into orbit, the city below thrown into silhouette, NOVA and HELIX standing side by side on the rooftop staring up as the world changes forever",
"caption": "AND THEN — IT REACHED ESCAPE VELOCITY.",
"dialogue": [
{ "who": "HELIX", "text": "Liftoff." }
],
"fx": "LIFTOFF"
}
`,
};
const SEED_ORDER = Object.keys(EMBEDDED_SEED); // preferred tab order
async function loadSeed() {
try {
const man = await (await fetch("comic/manifest.json", { cache: "no-store" })).json();
const out = {};
await Promise.all((man.files || []).map(async (p) => {
out[p] = await (await fetch("comic/" + p, { cache: "no-store" })).text();
}));
if (Object.keys(out).length) return out;
} catch { /* fall through to embedded */ }
return { ...EMBEDDED_SEED };
}
// ---------- file tabs + editor ----------
const isPanel = (p) => p.startsWith("panels/");
const panelFiles = () => fileOrder().filter(isPanel);
const fileOrder = () => {
const keys = Object.keys(files);
return keys.sort((a, b) => {
const ai = SEED_ORDER.indexOf(a), bi = SEED_ORDER.indexOf(b);
if (ai !== -1 || bi !== -1) return (ai === -1 ? 1e9 : ai) - (bi === -1 ? 1e9 : bi);
return a.localeCompare(b);
});
};
function renderTabs() {
const host = $("files"); host.innerHTML = "";
for (const path of fileOrder()) {
const tab = document.createElement("span");
tab.className = "ftab" + (path === active ? " sel" : "");
const name = document.createElement("span"); name.textContent = path;
name.addEventListener("click", () => selectFile(path));
const x = document.createElement("span"); x.className = "x"; x.textContent = "✕"; x.title = "delete file";
x.addEventListener("click", (e) => { e.stopPropagation(); deleteFile(path); });
tab.append(name, x);
host.appendChild(tab);
}
const add = document.createElement("span");
add.className = "ftab add"; add.textContent = "+ panel";
add.addEventListener("click", addFile);
host.appendChild(add);
}
function selectFile(path) {
if (active && files[active] !== undefined) files[active] = $("editor").value; // commit edits
active = path;
$("activelabel").textContent = path;
$("editor").value = files[path] ?? "";
renderTabs();
}
function loadEditor() { if (active != null) { $("activelabel").textContent = active; $("editor").value = files[active] ?? ""; } }
function addFile() {
const path = prompt("New file path (e.g. panels/07-escape.json)", "panels/07-new.json");
if (!path) return;
const p = path.trim();
if (!p || files[p] !== undefined) { if (files[p] !== undefined) selectFile(p); return; }
files[p] = isPanel(p)
? `{\n "span": "half",\n "shot": "dynamic action shot",\n "cast": ["NOVA"],\n "scene": "describe the panel here",\n "caption": "",\n "dialogue": [],\n "fx": ""\n}\n`
: "";
renderTabs(); selectFile(p); refreshPromptPreview();
}
function deleteFile(path) {
if (!confirm("Delete " + path + " ?")) return;
delete files[path];
if (active === path) active = fileOrder()[0] || null;
renderTabs(); loadEditor(); scheduleLive();
}
$("editor").addEventListener("input", () => { if (active != null) { files[active] = $("editor").value; refreshPromptPreview(); scheduleLive(); } });
// ---------- compose every panel into one image prompt ("organize") ----------
const SIZE_HINT = { full: "wide", wide: "wide", half: "med", third: "small", tall: "tall" };
const PROMPT_LIMIT = 3000; // ideogram caps prompts at 3000 chars; keep the composed page prompt under it
const parseCfg = () => { try { return JSON.parse(files["config.json"] || "{}"); } catch { return {}; } };
const parsePanel = (path) => { try { const o = JSON.parse(files[path]); o._path = path; return o; } catch { return null; } };
function composePagePrompt(cfg, panels) {
const bible = cfg.characters || {};
const lines = [];
lines.push(`A complete comic-book PAGE, portrait, bold inked panel borders, clean gutters, with a title banner reading “${cfg.title || "COMIC"}”${cfg.issue ? ` — ${cfg.issue}` : ""}.`);
lines.push(`Style: ${cfg.style || "comic book art"}.` + (cfg.palette ? ` Palette: ${cfg.palette}.` : ""));
const usedCast = [...new Set(panels.flatMap((p) => p.cast || []))].map((nm) => bible[nm]).filter(Boolean);
if (usedCast.length) lines.push(`Recurring characters, keep consistent every panel: ${usedCast.join(" ; ")}.`);
lines.push(`${panels.length} panels, reading order:`);
panels.forEach((p, i) => {
let s = `${i + 1}. (${SIZE_HINT[p.span] || "med"}) ${p.shot ? p.shot + " — " : ""}${p.scene || ""}`.trim();
if (p.caption) s += ` Caption: “${p.caption}”.`;
(p.dialogue || []).forEach((d) => { if (d && d.text) s += ` ${d.who ? d.who + ": " : ""}“${d.text}”.`; });
if (p.fx) s += ` SFX: “${p.fx}”.`;
lines.push(s);
});
lines.push(`Letter all captions, balloons and SFX as crisp, correctly-spelled comic text.`);
// hard cap: keep within the image model's prompt limit (trim whole panel lines off the end, not mid-sentence)
let dropped = 0;
let prompt = lines.join("\n");
if (prompt.length > PROMPT_LIMIT) {
while (lines.length > 5 && lines.join("\n").length > PROMPT_LIMIT) { lines.splice(-2, 1); dropped++; } // drop trailing panel lines, keep the lettering note
prompt = lines.join("\n");
if (prompt.length > PROMPT_LIMIT) prompt = prompt.slice(0, PROMPT_LIMIT); // last resort
}
return { prompt, dropped };
}
function currentPanels() { return panelFiles().map(parsePanel).filter(Boolean); }
function refreshPromptPreview() {
if (active && files[active] !== undefined) files[active] = $("editor").value;
const panels = currentPanels();
if (!panels.length) { $("pagePrompt").textContent = "(no panels yet — add a panels/*.json file)"; return; }
const { prompt, dropped } = composePagePrompt(parseCfg(), panels);
$("pagePrompt").textContent = (dropped ? `⚠ ${dropped} panel(s) trimmed to fit the ${PROMPT_LIMIT}-char model limit.\n\n` : "") + prompt + `\n\n[${prompt.length}/${PROMPT_LIMIT} chars]`;
}
async function promptHash(s) { return b64url(await crypto.subtle.digest("SHA-256", new TextEncoder().encode(s))); }
// ---------- the single image render ----------
let currentImage = null; // data URL of the rendered page (for export)
const imageCache = {}; // promptHash -> data URL
const imgStats = { count: 0, cost: 0, exact: true };
let lastBalance = null; // NanoGPT remainingBalance from the latest render
let hasRendered = false;
let renderToken = 0;
let takeNonce = 0; // bumped by "new take" to force a fresh, uncached render
function setImgStatus(html, cls) { $("imgbar").className = cls || ""; $("imgbar").innerHTML = html; }
function idleImgStatus() {
if (!imgStats.count) { setImgStatus(`Hit <b>🎨 render page</b> to draw the whole comic in one image render.`, "dim"); return; }
const money = `${imgStats.exact ? "" : "~"}$${imgStats.cost.toFixed(5)}`;
const bal = lastBalance != null ? ` <span class="dim">· balance $${lastBalance.toFixed(2)}</span>` : "";
setImgStatus(`🖼 ${imgStats.count} render${imgStats.count === 1 ? "" : "s"} this session · ${money}${bal} <span class="dim">· cached, so an unchanged page is free</span>`);
}
function showImage(url) { currentImage = url; $("page").src = url; $("page").style.display = "block"; $("ph").style.display = "none"; }
function showLoading(on, text) { $("loadtext").textContent = text || "drawing…"; $("loading").style.display = on ? "flex" : "none"; }
async function genImage(prompt, cfg, key, nonce) {
const body = { model: cfg.model || DEFAULT_MODEL_IMG, prompt, n: 1, size: cfg.size || DEFAULT_SIZE, response_format: "b64_json" };
if (nonce) body.user = "take-" + nonce; // nudge a different sample on "new take"
const r = await fetch(IMG_ENDPOINT, {
method: "POST", headers: { Authorization: `Bearer ${key}`, "Content-Type": "application/json" },
body: JSON.stringify(body),
});
if (!r.ok) throw new Error(`image ${r.status}: ${(await r.text()).slice(0, 300)}`);
const j = await r.json();
const d = (j.data || [])[0] || {};
const url = d.b64_json ? `data:image/png;base64,${d.b64_json}` : d.url;
if (!url) throw new Error("no image in response");
// NanoGPT returns the exact figures: { data:[{b64_json}], cost, paymentSource, remainingBalance }
const exact = typeof j.cost === "number" && j.cost > 0;
const cost = exact ? j.cost : IMG_PRICE_EST;
const balance = typeof j.remainingBalance === "number" ? j.remainingBalance : null;
return { url, cost, exact, balance };
}
async function renderComic(opts = {}) {
const key = getKey(); if (!key) return;
if (active && files[active] !== undefined) files[active] = $("editor").value; // commit edits
const cfg = parseCfg();
const panels = currentPanels();
if (!panels.length) { setImgStatus("No panels — add a <code>panels/*.json</code> file.", "dim"); return; }
const { prompt, dropped } = composePagePrompt(cfg, panels);
refreshPromptPreview();
hasRendered = true;
const nonce = opts.force ? ++takeNonce : 0;
const h = await promptHash(JSON.stringify({ m: cfg.model, s: cfg.size, p: prompt, nonce }));
const myToken = ++renderToken;
const warn = dropped ? ` <span class="err">· ${dropped} panel(s) trimmed to fit ${PROMPT_LIMIT} chars</span>` : "";
if (imageCache[h]) { showImage(imageCache[h]); idleImgStatus(); if (dropped) setImgStatus($("imgbar").innerHTML + warn); return; }
showLoading(true, `drawing the page with ${cfg.model || DEFAULT_MODEL_IMG} · one render (${cfg.size || DEFAULT_SIZE})`);
setImgStatus(`<span class="spin">◐</span> one <b>${cfg.model || DEFAULT_MODEL_IMG}</b> render · ${panels.length} panels → one ${cfg.size || DEFAULT_SIZE} page…${warn}`);
try {
const { url, cost, exact, balance } = await genImage(prompt, cfg, key, nonce);
imageCache[h] = url;
if (myToken !== renderToken) return; // superseded by a newer render
imgStats.count++; imgStats.cost += cost; if (!exact) imgStats.exact = false;
if (balance != null) lastBalance = balance;
showImage(url);
idleImgStatus();
if (dropped) setImgStatus($("imgbar").innerHTML + warn);
} catch (e) {
if (myToken === renderToken) setImgStatus(`⚠ image error: ${e.message}`, "err");
} finally {
if (myToken === renderToken) showLoading(false);
}
}
let liveTimer = null;
function scheduleLive() {
if (!$("liveedit").checked || !hasRendered) return; // never auto-spend before the first explicit render
clearTimeout(liveTimer);
liveTimer = setTimeout(() => renderComic(), 1000);
}
$("render").addEventListener("click", () => renderComic());
$("newtake").addEventListener("click", () => renderComic({ force: true }));
$("liveedit").addEventListener("change", () => { if ($("liveedit").checked) scheduleLive(); });
// ---------- export the rendered page as a PNG ----------
$("export").addEventListener("click", () => {
if (!currentImage) { setImgStatus("Nothing to export yet — render the page first.", "dim"); return; }
const a = document.createElement("a");
a.href = currentImage; a.download = "comic-page.png";
document.body.appendChild(a); a.click(); a.remove();
});
// ---------- click the page → fullscreen viewer ----------
function openZoom() {
if (!currentImage) return;
$("zoomimg").src = currentImage;
$("zoom").classList.add("open"); $("zoom").classList.remove("actual");
$("zoomclose").style.display = "";
}
function closeZoom() { $("zoom").classList.remove("open", "actual"); $("zoomclose").style.display = "none"; }
$("page").addEventListener("click", openZoom);
$("zoomclose").addEventListener("click", closeZoom);
$("zoom").addEventListener("click", (e) => { if (e.target === $("zoom")) closeZoom(); }); // click the backdrop
$("zoomimg").addEventListener("click", (e) => { e.stopPropagation(); $("zoom").classList.toggle("actual"); }); // fit ⇄ actual size
document.addEventListener("keydown", (e) => { if (e.key === "Escape" && $("zoom").classList.contains("open")) closeZoom(); });
// ---------- diff rendering ----------
let curPhase = "";
function appendText(phase, chunk) {
if (!phase.startsWith("Generating")) return; // apply streams in parallel; show meter, not text
const pane = $("diff");
if (phase !== curPhase) { curPhase = phase; pane.textContent = ""; }
pane.textContent += chunk; pane.scrollTop = pane.scrollHeight;
}
function renderDiff(diff) {
$("diff").innerHTML = "";
if (!diff.trim()) { $("diff").textContent = "(no diff produced)"; return; }
for (const line of diff.split("\n")) {
const span = document.createElement("span");
span.textContent = line + "\n";
if (/^\+\+\+|^---|^@@|^diff |^a\/|^b\//.test(line)) span.className = "hdr";
else if (line.startsWith("+")) span.className = "add";
else if (line.startsWith("-")) span.className = "del";
$("diff").appendChild(span);
}
}
function showChanges(added, removed, changed) {
const c = $("changes"); c.innerHTML = "";
const part = (cls, label, arr) => { if (!arr.length) return; const s = document.createElement("span"); s.className = cls; s.textContent = `${label} ${arr.join(", ")} `; c.appendChild(s); };
part("a", "＋ added", added); part("r", "－ removed", removed); part("c", "～ updated", changed);
if (!added.length && !removed.length && !changed.length) c.textContent = "No files changed.";
}
// ---------- run: diff → smartapply → reconcile → single render ----------
async function run() {
const key = getKey(); if (!key) return;
if (active && files[active] !== undefined) files[active] = $("editor").value; // commit edits
undoSnapshot = JSON.parse(JSON.stringify(files));
$("run").disabled = true; $("undo").disabled = true; curPhase = ""; $("diff").textContent = ""; $("changes").textContent = "";
prog.inDone = prog.outDone = prog.cost = prog.liveIn = prog.liveOut = prog.liveCost = 0; paintUsage();
$("progress").style.display = "block"; document.querySelector("#progress .spin").style.display = "";
$("livelabel").textContent = ""; $("phase").textContent = "starting…";
const t0 = performance.now();
const timer = setInterval(() => { $("elapsed").textContent = ((performance.now() - t0) / 1000).toFixed(1); }, 100);
try {
const diff = await generateDiff(buildEnvironment(files), $("goal").value, { apiKey: key, model: MODEL, callLlm: streamingCallLlm("Generating diff") });
renderDiff(diff);
const parsed = parseDiffPerFile(diff);
if (!diff.trim() || !parsed.length) {
$("changes").textContent = "⚠ The model returned no applicable diff. Try rephrasing the goal.";
} else {
const applyLlm = streamingCallLlm("Applying diff");
const before = { ...files };
const updated = await smartapply(diff, files, {
apiKey: key, model: APPLY,
callLlmForApply: (p, o, d, m, o2) => callLlmForApply(p, o, d, m, { ...o2, callLlm: applyLlm }),
});
const beforeKeys = new Set(Object.keys(before)), afterKeys = new Set(Object.keys(updated));
const added = [...afterKeys].filter((k) => !beforeKeys.has(k));
const removed = [...beforeKeys].filter((k) => !afterKeys.has(k));
const changed = [...afterKeys].filter((k) => beforeKeys.has(k) && before[k] !== updated[k]);
files = updated;
if (active == null || files[active] === undefined) active = fileOrder()[0] || null;
renderTabs(); loadEditor(); refreshPromptPreview();
showChanges(added, removed, changed);
$("undo").disabled = false;
if ($("liveedit").checked) renderComic(); // organize the new panels → one render
}
$("phase").textContent = "done"; document.querySelector("#progress .spin").style.display = "none";
} catch (e) {
$("changes").textContent = "Error: " + e.message;
$("progress").style.display = "none";
} finally {
clearInterval(timer); $("run").disabled = false;
}
}
$("run").addEventListener("click", run);
$("goal").addEventListener("keydown", (e) => { if (e.key === "Enter") { e.preventDefault(); if (!$("run").disabled) run(); } });
$("undo").addEventListener("click", () => {
if (!undoSnapshot) return;
files = undoSnapshot; undoSnapshot = null;
if (active == null || files[active] === undefined) active = fileOrder()[0] || null;
renderTabs(); loadEditor(); refreshPromptPreview();
if (hasRendered) renderComic();
$("undo").disabled = true; $("changes").textContent = "↶ reverted to the previous version.";
});
// ---------- boot ----------
(async () => {
renderModelRow("diff"); renderModelRow("apply");
try { await handleRedirect(); } catch (e) { $("status").textContent = "sign-in error: " + e.message; }
renderAuth();
files = await loadSeed();
active = fileOrder().includes("panels/01-ignition.json") ? "panels/01-ignition.json" : (fileOrder()[0] || null);
renderTabs(); loadEditor(); refreshPromptPreview();
idleImgStatus();
loadModels();
})();
</script>
</body>
</html>