Lightning withdraw (LNURL-withdraw): a site's withdraw lnurl in Send gets paid to you; the media pager says when a picture can't be loaded. (1) LUD-03 (Adam, 2026-10-16: "add lnurlw support"): an lnurl whose terms are a withdrawRequest — found when the pay fetch meets one (fetchPayParams throws with the terms attached, resolve() takes them up) — shows the site, their range (or the fixed amount) and description, the amount field at their max; Withdraw makes an invoice over Ark for the amount (arkLnInvoice), hands it to their callback with k1 (submitWithdraw), and watches it (arkLnWatch): "has your invoice for…", then "Received …" on settlement; their refusal in their words, with Try again; Back before it is paid stops watching. An amount outside their range is told the range, nothing sent; a watch-only device says it can't receive. LUD-17 schemes lnurlw:// and lnurlp:// (and lightning: before them) are the URL over https, http on an onion (parseZapTarget). (2) A pager slide whose picture can't load — the server copy and then the original both failing (isolabellart's relay answering 502 that afternoon: the broken-picture glyph sat in the corner of a black slide) — hides the <img> and says "This picture couldn't be loaded" with the host, caption and controls kept (mp-gone / .mp-missing). tools/lnurl-auth-unit-test.js (lnurlw:// and lnurlp://, an onion, the terms, a pay fetch that finds a withdraw, the callback's k1 and pr, a refusal); tools/lnurl-withdraw-test.js (the zaps feature against a faked Ark and a stand-in site: the terms, max prefilled, out of range refused unsent, the invoice at the callback and watched, Received on settlement, a fixed amount with no field, Back unwatches, a refusal's reason); tools/pager-gone-picture-test.js; lnurl-auth and feed-picture-pager tests pass.HEADmaster

Co-Authored-By: Claude Fable 5.1 <[email protected]>
Claude-Session: https://claude.ai/code/session_01J1Kon8bxJoHRpJdSzshCkp

8 files changed, 332 insertions, 5 deletions

diff --git a/src/features/messages.js b/src/features/messages.js
index d5da326..20cfaa6 100644
--- a/src/features/messages.js
+++ b/src/features/messages.js
@@ -12279,7 +12279,15 @@ export function messagesFeature(ctx) {
       ? h('video', { class: 'mp-media', 'data-src': url, loop: true, playsinline: true, preload: 'none',
           poster: videoThumbs.get(url) || posterOf(ev, url) || (videoInfo.get(url) || {}).image || serverThumb(url) })
       : h('img', { class: 'mp-media', 'data-src': quick, 'data-full': url, alt: '', draggable: 'false', decoding: 'async',
-          onError: (e) => { const m = e.currentTarget; if ((m.getAttribute('src') || '') !== url) { m.setAttribute('data-src', url); m.setAttribute('src', url); } } });
+          onError: (e) => {
+            const m = e.currentTarget;
+            if ((m.getAttribute('src') || '') !== url) { m.setAttribute('data-src', url); m.setAttribute('src', url); return; }
+            // the original is gone too (its host down, the file deleted): say
+            // so, in place of the browser's broken-picture glyph
+            let host = ''; try { host = new URL(url).hostname; } catch {}
+            m.closest('.mp-slide').classList.add('mp-gone');
+            m.insertAdjacentElement('afterend', h('div', { class: 'mp-missing' }, h('div', { class: 'mp-missing-ico' }, '🖼'), h('div', {}, t('mediaPicGone')), host ? h('div', { class: 'small muted' }, host) : null));
+          } });
     const caption = mediaCaption(ev);
     const stop = (fn) => (e) => { e.stopPropagation(); fn(e); };
     const slide = h('div', { class: 'mp-slide', 'data-k': mediaKey(it) },
diff --git a/src/features/zaps.js b/src/features/zaps.js
index f29fe83..d364738 100644
--- a/src/features/zaps.js
+++ b/src/features/zaps.js
@@ -13,7 +13,7 @@
 
 import { t } from '../i18n.js';
 import { npubOf } from '../nostr.js';
-import { parseZapTarget, zapTargetFromProfile, fetchPayParams, buildZapRequest, requestInvoice, parseLnurlAuth, lnurlAuthKey, lnurlAuthLogin } from '../lnurl.js';
+import { parseZapTarget, zapTargetFromProfile, fetchPayParams, buildZapRequest, requestInvoice, parseLnurlAuth, lnurlAuthKey, lnurlAuthLogin, submitWithdraw } from '../lnurl.js';
 import { HDKey } from '@scure/bip32';
 import { mnemonicToSeedSync } from '@scure/bip39';
 import { decodeNoffer } from '../noffer.js';
@@ -136,7 +136,13 @@ export function zapsFeature(ctx) {
 
       z.address = lnTarget.address || z.address;
     }
-    const params = await fetchPayParams(target.url);
+    let params;
+    try { params = await fetchPayParams(target.url); }
+    catch (e) {
+      // not a payment after all: the site wants to pay US (LUD-03)
+      if (e && e.withdraw) { if (ui.zap === z) beginWithdraw(e.withdraw, z); return; }
+      throw e;
+    }
     if (ui.zap !== z) return; // user navigated away
     // Name the payee like a human: LNURL metadata usually carries the
     // lightning address (text/identifier) — show that instead of a bech32
@@ -350,6 +356,67 @@ export function zapsFeature(ctx) {
       h('button', { class: 'btn-primary btn-block', onClick: () => doLogin(a) }, a.status === 'error' ? t('lnAuthRetry') : t(action === 'register' ? 'lnAuthGoRegister' : 'lnAuthGo')),
       h('button', { class: 'btn-ghost btn-block', onClick: back }, t('back')));
   }
+  // ---- Lightning withdraw (LNURL-withdraw) ----
+  // A site's withdraw lnurl: they will pay an invoice of ours, within their
+  // range. Ask the amount (their max to start; fixed when min = max), make
+  // the invoice over Ark, hand it over, and watch for the money.
+  function beginWithdraw(w, z) {
+    const maxSat = Math.floor(w.maxMsat / 1000), minSat = Math.ceil(w.minMsat / 1000);
+    ui.zap = null; ui.sendError = '';
+    ui.lnWithdraw = { w, minSat, maxSat, fixed: minSat >= maxSat, amount: ctx.amountField(maxSat), status: 'ask', address: z && z.address };
+    render();
+  }
+  async function doWithdraw(d) {
+    const sats = d.fixed ? d.maxSat : (parseAmount(d.amount, getUnit()) || 0);
+    if (!(sats >= Math.max(1, d.minSat) && sats <= d.maxSat)) { d.error = t('lnWithdrawRange', { min: fmtAmount(d.minSat), max: fmtAmount(d.maxSat), unit: unitLabel() }); render(); return; }
+    if (wallet.watchOnly) { d.error = t('lnWithdrawWatchOnly'); render(); return; }
+    d.sats = sats; d.status = 'busy'; d.error = ''; render();
+    try {
+      const inv = await hook('arkLnInvoice', sats, (d.w.description || t('lnWithdrawMemo', { domain: d.w.domain })).slice(0, 120));
+      if (!inv || !inv.invoice) throw new Error(t('lnWithdrawNoInvoice'));
+      if (ui.lnWithdraw !== d) { hook('arkLnCancel', inv.id); return; }
+      await submitWithdraw(d.w, inv.invoice);
+      if (ui.lnWithdraw !== d) return;
+      d.status = 'sent'; d.lnId = inv.id;
+      hook('arkLnWatch', inv.id, (a) => { if (ui.lnWithdraw !== d) return; d.status = a && a.step === 'done' ? 'paid' : 'error'; if (d.status === 'error') d.error = t('lnWithdrawNotPaid'); render(); });
+    } catch (e) {
+      if (ui.lnWithdraw !== d) return;
+      d.status = 'error'; d.error = e.message || String(e);
+    }
+    render();
+  }
+  function lnWithdrawView() {
+    const d = ui.lnWithdraw;
+    if (!d) return null;
+    const domain = d.w.domain;
+    const back = () => { if (d.lnId && d.status !== 'paid') hook('arkLnUnwatch', d.lnId); ui.lnWithdraw = null; ui.sendError = ''; ui.send = blankSend(); render(); };
+    const heading = '⚡ ' + t('lnWithdrawTitle');
+    if (d.status === 'busy') {
+      return h('div', { class: 'card col', style: 'align-items:center;gap:14px;padding:32px 14px' },
+        h('span', { class: 'spinner' }), h('p', { class: 'muted', style: 'margin:0' }, t('lnWithdrawAsking', { domain })));
+    }
+    if (d.status === 'sent' || d.status === 'paid') {
+      const paid = d.status === 'paid';
+      return h('div', { class: 'card col', style: 'align-items:center;text-align:center;gap:14px;padding:32px 14px' },
+        paid ? h('div', { class: 'check-badge' }, '✓') : h('span', { class: 'spinner' }),
+        h('h3', { style: 'margin:0' }, paid ? t('lnWithdrawPaid', { amount: fmtAmount(d.sats) + ' ' + unitLabel() }) : t('lnWithdrawSent', { amount: fmtAmount(d.sats) + ' ' + unitLabel(), domain })),
+        paid ? null : h('p', { class: 'small muted', style: 'margin:0' }, t('lnWithdrawSentHint')),
+        h('button', { class: paid ? 'btn-primary btn-block' : 'btn-ghost btn-block', onClick: back }, paid ? t('done') : t('back')));
+    }
+    return h('div', { class: 'card col', style: 'gap:12px' },
+      h('h3', {}, heading),
+      h('div', { class: 'small', style: 'font-size:18px;font-weight:600;word-break:break-all' }, domain),
+      d.w.description ? h('p', { class: 'small muted', style: 'margin:0' }, d.w.description) : null,
+      h('p', { class: 'small muted', style: 'margin:0' }, d.fixed ? t('lnWithdrawFixed', { amount: fmtAmount(d.maxSat) + ' ' + unitLabel(), domain })
+        : t('lnWithdrawOffer', { min: fmtAmount(d.minSat), max: fmtAmount(d.maxSat), unit: unitLabel(), domain })),
+      d.fixed ? null : h('div', { class: 'row gap6', style: 'align-items:center' },
+        h('input', { type: 'number', min: '0', inputmode: 'decimal', placeholder: t('lnPayAmount'), value: d.amount, onInput: (e) => { d.amount = e.target.value; d.error = ''; render(); } }),
+        unitTag(),
+        h('button', { type: 'button', onClick: () => { d.amount = ctx.amountField(d.maxSat); d.error = ''; render(); } }, t('max'))),
+      d.error ? h('div', { class: 'notice err' }, d.error) : null,
+      h('button', { class: 'btn-primary btn-block', onClick: () => doWithdraw(d) }, d.status === 'error' ? t('lnAuthRetry') : t('lnWithdrawGo')),
+      h('button', { class: 'btn-ghost btn-block', onClick: back }, t('back')));
+  }
   function zapView() {
     const z = ui.zap;
     if (!z) return null;
@@ -535,8 +602,8 @@ export function zapsFeature(ctx) {
       begin({ kind: 'npub', pk, eventId: eventId || null }, shortNpub(npub || npubOf(pk)));
       return true;
     },
-    resetSend() { ui.zap = null; ui.lnAuth = null; },
-    sendView() { return lnAuthView() || zapView(); },
+    resetSend() { ui.zap = null; ui.lnAuth = null; ui.lnWithdraw = null; },
+    sendView() { return lnAuthView() || lnWithdrawView() || zapView(); },
     // Settings → Nostr: the one-tap zap amount.
     nostrSettingsCards() {
       const cur = ctx.zapDefaultSat ? ctx.zapDefaultSat() : 0;
diff --git a/src/i18n.js b/src/i18n.js
index 4cccefd..2b33a47 100644
--- a/src/i18n.js
+++ b/src/i18n.js
@@ -531,6 +531,7 @@ const STR = {
     postBlocked: 'Blocked',
     zapSending: 'Sending your zap…',
     msgReply: 'Reply',
+    mediaPicGone: 'This picture couldn’t be loaded',
     mediaOpenPost: 'Open the post',
     profNewPost: 'New post',
     profYourProfile: 'Your profile',
@@ -1491,6 +1492,19 @@ const STR = {
     lnAuthDoneHint: 'Go back to their page — it should have let you in.',
     lnAuthFailed: 'They didn’t accept the login.',
     lnAuthNoKey: 'This account has no wallet key to log in with.',
+    lnWithdrawTitle: 'Withdraw over Lightning',
+    lnWithdrawOffer: '{domain} will pay you between {min} and {max} {unit}. How much?',
+    lnWithdrawFixed: '{domain} will pay you {amount}.',
+    lnWithdrawRange: 'Between {min} and {max} {unit}.',
+    lnWithdrawGo: 'Withdraw',
+    lnWithdrawAsking: 'Asking {domain} to pay…',
+    lnWithdrawSent: '{domain} has your invoice for {amount}',
+    lnWithdrawSentHint: 'It should arrive in a moment. You can leave this page; the payment will show in your history.',
+    lnWithdrawPaid: 'Received {amount}',
+    lnWithdrawNotPaid: 'They took the invoice but the payment didn’t arrive. Check with them before trying again.',
+    lnWithdrawNoInvoice: 'Couldn’t make an invoice to be paid to.',
+    lnWithdrawWatchOnly: 'This device can’t receive: the wallet is watch-only here.',
+    lnWithdrawMemo: 'Withdrawal from {domain}',
     lnPayAmount: 'Amount',
     lnPayBoltzFee: 'Swap fee',
     lnPayNetworkFee: 'Network fee',
diff --git a/src/lnurl.js b/src/lnurl.js
index cf851b5..bfebf0d 100644
--- a/src/lnurl.js
+++ b/src/lnurl.js
@@ -47,6 +47,9 @@ export function lnAddressToUrl(addr) {
 export function parseZapTarget(input, { pk = null } = {}) {
   const s = (input || '').trim().replace(/^lightning:/i, '');
   if (!s) return null;
+  // LUD-17: lnurlp:// (pay) and lnurlw:// (withdraw) are the URL itself over https (http on an onion)
+  const scheme = /^(lnurlp|lnurlw):\/\/(.+)$/i.exec(s);
+  if (scheme) { const url = (/^[^/]+\.onion(\/|$)/i.test(scheme[2]) ? 'http://' : 'https://') + scheme[2]; return { kind: 'lnurl', url, lnurlBech32: safeEncode(url), pk }; }
   // An npub/hex pubkey — the caller resolves lud16/lud06 from the profile and
   // calls fromProfile() below; here we just report the shape.
   const npk = parseNostrPubkey(s);
@@ -96,10 +99,14 @@ async function fetchJson(url, ms = 8000) {
 }
 
 // GET the LNURL-pay params. Normalizes the bits we use; keeps `callback`.
+// An lnurl that turns out to be a withdraw (LUD-03) is not an error here:
+// the thrown error carries its terms (`withdraw`) for the caller to take up.
 export async function fetchPayParams(url) {
   const d = await fetchJson(url);
   if (!d || d.tag !== 'payRequest' || !d.callback) {
     if (d && d.status === 'ERROR') throw new Error(d.reason || 'LNURL error');
+    const w = withdrawParamsOf(d);
+    if (w) { const e = new Error('a Lightning withdraw, not a payment'); e.withdraw = w; throw e; }
     throw new Error('not a Lightning pay endpoint');
   }
   return {
@@ -179,3 +186,30 @@ export async function lnurlAuthLogin(auth, key) {
   return { key: bytesToHex(key.publicKey) };
 }
 
+// ---- LNURL-withdraw (LUD-03): the other side asks to PAY us ----
+// Their terms: an amount range (msat), a callback and k1. We make an invoice
+// for the amount chosen and hand it to the callback; they pay it.
+export function withdrawParamsOf(d) {
+  if (!d || d.tag !== 'withdrawRequest' || !d.callback || !d.k1) return null;
+  const min = Math.max(0, Number(d.minWithdrawable) || 0), max = Number(d.maxWithdrawable) || 0;
+  if (!(max > 0)) return null;
+  let domain = '';
+  try { domain = new URL(d.callback).hostname; } catch {}
+  return { callback: d.callback, k1: String(d.k1), minMsat: min, maxMsat: Math.max(min, max), description: String(d.defaultDescription || '').slice(0, 200), domain };
+}
+export async function fetchWithdrawParams(url) {
+  const d = await fetchJson(url);
+  const w = withdrawParamsOf(d);
+  if (!w) { if (d && d.status === 'ERROR') throw new Error(d.reason || 'LNURL error'); throw new Error('not a Lightning withdraw'); }
+  return w;
+}
+// Hand them the invoice to pay. Their OK means they have it, not that it is paid.
+export async function submitWithdraw(params, invoice) {
+  const url = new URL(params.callback);
+  url.searchParams.set('k1', params.k1);
+  url.searchParams.set('pr', invoice);
+  const d = await fetchJson(url.href);
+  if (!d || String(d.status || '').toUpperCase() !== 'OK') throw new Error((d && d.reason) || 'withdraw refused');
+  return true;
+}
+
diff --git a/src/style.css b/src/style.css
index 15fe4a6..4a9b191 100644
--- a/src/style.css
+++ b/src/style.css
@@ -1510,6 +1510,9 @@ body::after {
    kept a full-size texture per slide, and a flight past them stuttered. */
 .mp-slide img.mp-media { touch-action: pan-x pan-y; transform-origin: center center; }
 .mp-slide.mp-cur img.mp-media { will-change: transform; }
+.mp-slide.mp-gone img.mp-media { display: none; }
+.mp-missing { display: flex; flex-direction: column; align-items: center; gap: 6px; color: rgba(255, 255, 255, .55); font-size: 15px; text-align: center; padding: 20px; }
+.mp-missing-ico { font-size: 44px; opacity: .5; }
 /* nothing but the picture until a tap */
 .mp-meta, .mp-top { opacity: 0; pointer-events: none; transition: opacity .18s; }
 .media-pager.show .mp-meta, .media-pager.show .mp-top { opacity: 1; pointer-events: auto; }
diff --git a/tools/lnurl-auth-unit-test.js b/tools/lnurl-auth-unit-test.js
index 0707a8e..c9989be 100644
--- a/tools/lnurl-auth-unit-test.js
+++ b/tools/lnurl-auth-unit-test.js
@@ -40,3 +40,24 @@ assert.match(got.sig, /^30[0-9a-f]+$/, 'a DER signature');
 globalThis.fetch = async () => new Response(JSON.stringify({ status: 'ERROR', reason: 'no such user' }), { headers: { 'content-type': 'application/json' } });
 await assert.rejects(lnurlAuthLogin(a, k), /no such user/, "the server's reason is the error");
 console.log('✓ lnurl-auth: a login is told from a payment, one key per site per wallet, the signature verifies, the server has the last word');
+
+// ---- LNURL-withdraw (LUD-03) ----
+const { parseZapTarget, withdrawParamsOf, fetchWithdrawParams, submitWithdraw, fetchPayParams } = await import('../src/lnurl.js');
+const w = parseZapTarget('lnurlw://pay.example.com/withdraw?k=1');
+assert.equal(w.url, 'https://pay.example.com/withdraw?k=1', 'lnurlw:// is the URL over https');
+assert.equal(parseZapTarget('LIGHTNING:lnurlp://pay.example.com/.well-known/lnurlp/bob').url, 'https://pay.example.com/.well-known/lnurlp/bob');
+assert.equal(parseZapTarget('lnurlw://abc.onion/w').url, 'http://abc.onion/w', 'an onion over http');
+const terms = { tag: 'withdrawRequest', callback: 'https://pay.example.com/cb', k1: 'k1k1', minWithdrawable: 1000, maxWithdrawable: 50000, defaultDescription: 'faucet' };
+assert.deepEqual(withdrawParamsOf(terms), { callback: 'https://pay.example.com/cb', k1: 'k1k1', minMsat: 1000, maxMsat: 50000, description: 'faucet', domain: 'pay.example.com' });
+assert.equal(withdrawParamsOf({ tag: 'payRequest', callback: 'x' }), null);
+assert.equal(withdrawParamsOf({ ...terms, maxWithdrawable: 0 }), null, 'nothing to withdraw is no withdraw');
+globalThis.fetch = async () => Response.json(terms);
+assert.deepEqual(await fetchWithdrawParams('https://pay.example.com/w'), withdrawParamsOf(terms));
+await assert.rejects(fetchPayParams('https://pay.example.com/w'), (e) => e.withdraw && e.withdraw.k1 === 'k1k1', 'a pay fetch that finds a withdraw says so');
+let cb = null;
+globalThis.fetch = async (url) => { const u = new URL(url); cb = { path: u.pathname, k1: u.searchParams.get('k1'), pr: u.searchParams.get('pr') }; return Response.json({ status: 'OK' }); };
+assert.equal(await submitWithdraw(withdrawParamsOf(terms), 'lnbc1invoice'), true);
+assert.deepEqual(cb, { path: '/cb', k1: 'k1k1', pr: 'lnbc1invoice' }, 'the callback gets k1 and the invoice');
+globalThis.fetch = async () => Response.json({ status: 'ERROR', reason: 'already claimed' });
+await assert.rejects(submitWithdraw(withdrawParamsOf(terms), 'lnbc1invoice'), /already claimed/);
+console.log('✓ lnurl-withdraw: lnurlw:// and lnurlp:// schemes, the terms, a pay fetch that finds a withdraw, the callback, the refusal');
diff --git a/tools/lnurl-withdraw-test.js b/tools/lnurl-withdraw-test.js
new file mode 100644
index 0000000..cc1b152
--- /dev/null
+++ b/tools/lnurl-withdraw-test.js
@@ -0,0 +1,103 @@
+// LNURL-withdraw: a site's withdraw lnurl pasted into Send is an offer to
+// PAY us — the wallet shows their range, makes an invoice for the amount
+// chosen, hands it to their callback and watches for the money. The Ark
+// side is faked (the invoice hook); the site is a stand-in on the test
+// server. Run: bun tools/lnurl-withdraw-test.js
+import assert from 'node:assert/strict';
+import puppeteer from './puppeteer.js';
+import { encodeLnurl } from '../src/lnurl.js';
+
+const app = await Bun.file('src/app.js').text();
+const domHelper = app.slice(app.indexOf('function h(tag,'), app.indexOf('// ---------------------------------------------------------------- morphing'));
+const entry = `
+import { zapsFeature } from './src/features/zaps.js';
+${domHelper}
+const ui = { screen: 'wallet', tab: 'send', send: { recipients: [{ address: '', amount: '' }] } };
+let watch = null, cancelled = [], invoices = 0;
+const wallet = { watchOnly: false, loadFeatureState: (k, d) => d, saveFeatureState: () => {} };
+const ctx = {
+  h, ui, wallet, render, toast: (m) => (window.toasts = (window.toasts || [])).push(m),
+  blankSend: () => ({ recipients: [{ address: '', amount: '' }] }),
+  fmtAmount: (n) => Number(n).toLocaleString('en-US'), unitLabel: () => 'sats', unitTag: () => h('span', { class: 'unit-tag' }, 'sats'),
+  parseAmount: (v) => { const n = Number(String(v).replace(/,/g, '')); return isFinite(n) ? Math.round(n) : null; }, getUnit: () => 'sats',
+  amountField: (sat) => String(sat),
+  hook(name, ...a) {
+    if (name === 'canLnPay') return true;
+    if (name === 'arkLnInvoice') { invoices++; return Promise.resolve({ id: 'ln' + invoices, invoice: 'lnbc' + a[0] + 'n1testinvoice' + invoices, amountSat: a[0] }); }
+    if (name === 'arkLnWatch') { watch = { id: a[0], cb: a[1] }; return true; }
+    if (name === 'arkLnUnwatch') { if (watch && watch.id === a[0]) watch = null; return true; }
+    if (name === 'arkLnCancel') { cancelled.push(a[0]); return Promise.resolve(true); }
+    return null;
+  },
+};
+const feature = zapsFeature(ctx); window.__feature = feature;
+function render() { document.querySelector('#app').replaceChildren(feature.sendView() || h('div', { id: 'closed' }, 'closed')); }
+window.test = { paste: (s) => feature.matchSendText(s, false), settle: (ok) => { const w = watch; watch = null; w.cb({ step: ok ? 'done' : 'failed' }); }, get watch() { return watch && watch.id; }, get cancelled() { return cancelled; }, ui };
+render();
+`;
+const bundle = await Bun.build({
+  entrypoints: ['lnw-test-entry'], target: 'browser',
+  plugins: [{ name: 'lnw-test', setup(build) {
+    build.onResolve({ filter: /^lnw-test-entry$/ }, () => ({ path: 'entry', namespace: 'lnw-test' }));
+    build.onLoad({ filter: /.*/, namespace: 'lnw-test' }, () => ({ contents: entry, loader: 'js', resolveDir: process.cwd() }));
+  } }],
+});
+assert(bundle.success, bundle.logs.join('\n'));
+const css = await Bun.file('src/style.css').text();
+const js = await bundle.outputs[0].text();
+const html = `<!doctype html><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1"><style>${css}</style><div id="app"></div><script type="module">${js}</script>`;
+const claims = [];
+const server = Bun.serve({ port: 0, fetch: (req) => {
+  const u = new URL(req.url);
+  if (u.pathname === '/withdraw') return Response.json({ tag: 'withdrawRequest', callback: server.url.origin + '/cb', k1: 'deadbeef', minWithdrawable: 100000, maxWithdrawable: 5000000, defaultDescription: 'Faucet drip' });
+  if (u.pathname === '/withdraw-fixed') return Response.json({ tag: 'withdrawRequest', callback: server.url.origin + '/cb', k1: 'fixed1', minWithdrawable: 21000, maxWithdrawable: 21000 });
+  if (u.pathname === '/withdraw-spent') return Response.json({ tag: 'withdrawRequest', callback: server.url.origin + '/cb-spent', k1: 'spent', minWithdrawable: 1000, maxWithdrawable: 1000 });
+  if (u.pathname === '/cb') { claims.push({ k1: u.searchParams.get('k1'), pr: u.searchParams.get('pr') }); return Response.json({ status: 'OK' }); }
+  if (u.pathname === '/cb-spent') return Response.json({ status: 'ERROR', reason: 'this voucher was already used' });
+  return new Response(html, { headers: { 'content-type': 'text/html' } });
+} });
+const lnurl = (path) => encodeLnurl(server.url.origin + path);
+const browser = await puppeteer.launch({ executablePath: '/usr/bin/google-chrome', headless: true, args: ['--no-sandbox'] });
+const page = await browser.newPage();
+const errors = [];
+page.on('pageerror', (e) => errors.push(e.message));
+const pause = (ms) => new Promise((r) => setTimeout(r, ms));
+const check = (name, value, detail = '') => { assert(value, name + (detail ? ' — ' + detail : '')); console.log(' ✓ ' + name); };
+const text = () => page.evaluate(() => document.body.innerText.replace(/\s+/g, ' '));
+const waitText = async (re, ms = 5000) => { for (let i = 0; i < ms / 100; i++) { if (re.test(await text())) return true; await pause(100); } return false; };
+const click = (label) => page.evaluate((x) => { const b = [...document.querySelectorAll('button')].find((n) => n.textContent.trim() === x || n.textContent.trim().endsWith(' ' + x)); if (!b) return false; b.click(); return true; }, label);
+const type = (sel, v) => page.evaluate(([s, val]) => { const i = document.querySelector(s); i.value = val; i.dispatchEvent(new Event('input', { bubbles: true })); }, [sel, v]);
+const host = new URL(server.url.origin).hostname;
+try {
+  await page.setViewport({ width: 390, height: 844 });
+  await page.goto(server.url.href);
+  await page.waitForSelector('#closed');
+  console.log('[a withdraw lnurl with a range]');
+  check('the paste is claimed', await page.evaluate((s) => test.paste(s), lnurl('/withdraw')));
+  check('their terms show: the site, the range, the description', await waitText(/Withdraw over Lightning/) && new RegExp(host + ' will pay you between 100 and 5,000 sats').test(await text()) && /Faucet drip/.test(await text()), await text());
+  check('the amount starts at their max', await page.$eval('input[type=number]', (i) => i.value) === '5000');
+  await type('input[type=number]', '9000'); await click('Withdraw'); await pause(100);
+  check('over their max: told the range, nothing sent', /Between 100 and 5,000 sats/.test(await text()) && claims.length === 0);
+  await type('input[type=number]', '1500'); await click('Withdraw');
+  check('an invoice for the amount is handed to their callback', await waitText(new RegExp(host + ' has your invoice for 1,500 sats')) && claims.length === 1 && claims[0].k1 === 'deadbeef' && claims[0].pr === 'lnbc1500n1testinvoice1', JSON.stringify(claims));
+  check('…and the wallet watches for the money', (await page.evaluate(() => test.watch)) === 'ln1');
+  await page.evaluate(() => test.settle(true));
+  check('paid: Received', await waitText(/Received 1,500 sats/) && !!(await page.$('.check-badge')));
+  await click('Done'); await pause(50);
+  check('Done closes it', !!(await page.$('#closed')));
+
+  console.log('[a fixed amount]');
+  await page.evaluate((s) => test.paste(s), lnurl('/withdraw-fixed'));
+  check('a fixed amount is stated, with no field', await waitText(new RegExp(host + ' will pay you 21 sats')) && !(await page.$('input[type=number]')));
+  await click('Withdraw');
+  check('withdrawn at that amount', await waitText(/has your invoice for 21 sats/) && claims[1].pr === 'lnbc21n1testinvoice2', JSON.stringify(claims));
+  await click('Back'); await pause(50);
+  check('Back before it is paid stops watching', (await page.evaluate(() => test.watch)) === null && !!(await page.$('#closed')));
+
+  console.log('[a site that refuses]');
+  await page.evaluate((s) => test.paste(s), lnurl('/withdraw-spent'));
+  await waitText(/will pay you 1 sats/); await click('Withdraw');
+  check("their reason is shown, with Try again", await waitText(/already used/) && /Try again/.test(await text()), await text());
+  check('no page errors', errors.length === 0, errors.join('; '));
+  console.log('\n✅ a withdraw lnurl pays us');
+} catch (e) { console.error('\n❌', e.message); process.exitCode = 1; } finally { await browser.close(); server.stop(true); }
diff --git a/tools/pager-gone-picture-test.js b/tools/pager-gone-picture-test.js
new file mode 100644
index 0000000..683493b
--- /dev/null
+++ b/tools/pager-gone-picture-test.js
@@ -0,0 +1,77 @@
+// A picture whose host is down (its server answers 502, so neither a copy
+// nor the original can load) shows a plain "couldn't be loaded" slide with
+// the host's name, not the browser's broken-picture glyph in a corner
+// (Adam's screenshot, 2026-10-16: isolabellart's relay down). The slides
+// around it are untouched. Run: bun tools/pager-gone-picture-test.js
+import puppeteer from './puppeteer.js';
+import { cacheKeyFor } from '../src/wallet.js';
+import { generateSecretKey, getPublicKey, finalizeEvent } from 'nostr-tools/pure';
+import { buildHtml } from '../build.js';
+const sleep = (ms) => new Promise((r) => setTimeout(r, ms));
+let ok = true;
+const check = (n, c, d = '') => { console.log(` ${c ? '✓' : '✗'} ${n}${d ? ' — ' + d : ''}`); if (!c) ok = false; };
+const png = (size) => Bun.spawnSync(['ffmpeg', '-loglevel', 'error', '-f', 'lavfi', '-i', 'testsrc=size=' + size, '-frames:v', '1', '-f', 'image2', '-c:v', 'png', 'pipe:1']).stdout;
+const PICS = { big1: png('2400x1800'), big3: png('2000x2000') };
+const SK = generateSecretKey(), AUTHOR = getPublicKey(SK);
+const now = Math.floor(Date.now() / 1000);
+const post = (content, ago) => finalizeEvent({ kind: 1, created_at: now - ago, tags: [], content }, SK);
+const html = await buildHtml({ minify: true, pwa: false });
+const hits = [];
+const server = Bun.serve({ port: 0, fetch: (req) => {
+  const path = new URL(req.url).pathname;
+  if (path.startsWith('/punks')) return new Response(Bun.file('dist' + path));
+  if (path === '/big2.png') { hits.push('big2'); return new Response('Bad Gateway', { status: 502 }); } // the host is down
+  const m = /^\/(big\d)\.png$/.exec(path);
+  if (m) { hits.push(m[1]); return new Response(PICS[m[1]], { headers: { 'content-type': 'image/png', 'access-control-allow-origin': '*' } }); }
+  return new Response(html, { headers: { 'content-type': 'text/html' } });
+} });
+const U = (n) => server.url.origin + '/' + n + '.png';
+const seeded = [post('first big ' + U('big1'), 100), post('second big ' + U('big2'), 200), post('third big ' + U('big3'), 300),
+  ...Array.from({ length: 10 }, (_, i) => post('filler ' + i + ' ' + 'lorem ipsum dolor sit amet. '.repeat(5), 500 + i * 60))];
+const browser = await puppeteer.launch({ executablePath: '/usr/bin/google-chrome', headless: 'new', args: ['--no-sandbox'] });
+const page = await browser.newPage();
+const errs = [];
+page.on('pageerror', (e) => errs.push(String(e)));
+const click = (t) => page.evaluate((x) => { const e = [...document.querySelectorAll('button')].find((n) => n.textContent.trim().toLowerCase().includes(x)); if (e) { e.click(); return true; } return false; }, t);
+const waitText = async (x, ms = 25000) => { for (let i = 0; i < ms / 250; i++) { if ((await page.evaluate(() => document.body.innerText)).toLowerCase().includes(x)) return true; await sleep(250); } return false; };
+const waitFor = async (fn, arg, ms = 10000) => { for (let i = 0; i < ms / 100; i++) { if (await page.evaluate(fn, arg)) return true; await sleep(100); } return false; };
+const slides = () => page.evaluate(() => [...document.querySelectorAll('.mp-slide')].map((s) => { const i = s.querySelector('img.mp-media'); const r = s.getBoundingClientRect(); return { k: s.getAttribute('data-k').split('/').pop(), src: (i.getAttribute('src') || '').replace(/^blob:.*/, 'blob:'), cur: s.classList.contains('mp-cur'), willChange: getComputedStyle(i).willChange, on: Math.abs(r.top) < 4 }; }));
+try {
+  await page.setViewport({ width: 390, height: 844 });
+  await page.goto(server.url.href, { waitUntil: 'domcontentloaded' });
+  await page.evaluate(() => localStorage.setItem('btc-wallet-network', 'regtest'));
+  await page.reload({ waitUntil: 'domcontentloaded' });
+  await sleep(400);
+  await click('create a new wallet'); await sleep(600);
+  await page.waitForSelector('.words .w .t');
+  const mn = (await page.$$eval('.words .w .t', (l) => l.map((e) => e.textContent.trim()))).join(' ');
+  await click('skip verification');
+  await waitText('receive', 20000);
+  const base = cacheKeyFor(mn + '\n');
+  await page.evaluate(([k, pk, ns]) => {
+    localStorage.setItem(k + ':follows', JSON.stringify({ tags: [['p', pk]], c: '', at: Math.floor(Date.now() / 1000) }));
+    localStorage.setItem(k + ':feedNotes', JSON.stringify(ns));
+    localStorage.setItem(k + ':profiles', JSON.stringify({ [pk]: { name: 'Picture Poster', t: Date.now() } }));
+    localStorage.setItem('btc-wallet-feed:' + k, 'following');
+  }, [base, AUTHOR, seeded]);
+  await page.reload({ waitUntil: 'domcontentloaded' });
+  await waitText('receive', 20000);
+  await page.evaluate(() => document.querySelector('.app-nav-button[aria-label="Feed"]').click());
+  check('the feed paints its copies of the pictures', await waitFor(() => [...document.querySelectorAll('.notes-feed img.note-img')].filter((i) => i.getAttribute('src').startsWith('blob:')).length >= 2, null, 25000));
+  const at = await page.evaluate(() => { const r = [...document.querySelectorAll('.notes-feed [data-key]')].find((n) => n.textContent.includes('first big')); r.scrollIntoView({ block: 'center' }); const i = r.querySelector('img.note-img').getBoundingClientRect(); return { x: i.x + i.width / 2, y: i.y + i.height / 2 }; });
+  await sleep(300);
+  await page.mouse.click(at.x, at.y);
+  check('the picture opens in the pager', await waitFor(() => !!document.querySelector('.media-pager .mp-slide img.mp-media'), null, 4000));
+  check('the picture that loads is sharpened at rest', await waitFor(() => { const c = document.querySelector('.mp-slide.mp-cur img.mp-media'); return c && c.getAttribute('src').endsWith('/big1.png'); }, null, 5000));
+  await page.keyboard.press('ArrowDown');
+  check('down: the dead picture\'s slide', await waitFor(() => { const c = document.querySelector('.mp-slide.mp-cur'); return c && c.getAttribute('data-k').endsWith('/big2.png'); }, null, 4000));
+  check('it says the picture couldn\'t be loaded, naming the host', await waitFor(() => { const c = document.querySelector('.mp-slide.mp-cur'); return c.classList.contains('mp-gone') && /couldn’t be loaded/.test(c.textContent) && /localhost/.test(c.querySelector('.mp-missing')?.textContent || ''); }, null, 6000), await page.evaluate(() => document.querySelector('.mp-slide.mp-cur').outerHTML.slice(0, 300)));
+  check('…and the broken <img> is hidden', await page.evaluate(() => getComputedStyle(document.querySelector('.mp-slide.mp-cur img.mp-media')).display === 'none'));
+  check('the original was tried after the copy failed', await page.evaluate(() => document.querySelector('.mp-slide.mp-cur img.mp-media').getAttribute('src').endsWith('/big2.png')));
+  await page.keyboard.press('ArrowDown');
+  check('the next slide is fine', await waitFor(() => { const c = document.querySelector('.mp-slide.mp-cur'); return c && c.getAttribute('data-k').endsWith('/big3.png') && !c.classList.contains('mp-gone'); }, null, 4000) && await waitFor(() => document.querySelector('.mp-slide.mp-cur img.mp-media').getAttribute('src').endsWith('/big3.png'), null, 5000));
+  check('its caption and controls are still there on the dead one', await page.evaluate(() => { const g = [...document.querySelectorAll('.mp-slide')].find((x) => x.getAttribute('data-k').endsWith('/big2.png')); return !!g.querySelector('.mp-like') && /second big/.test(g.textContent); }));
+  check('no page errors', errs.length === 0, errs.slice(0, 2).join(' | '));
+} catch (e) { console.error(e); ok = false; } finally { await browser.close(); server.stop(true); }
+console.log(ok ? '\n✅ a dead picture says so' : '\n❌ failed');
+process.exit(ok ? 0 : 1);