Feed video: fewer "To exit full screen" notices, and a YouTube clip takes one tap. Adam: Chrome's "v3.coinos.io – To exit full screen, drag from the top and touch the back button" shows every time, and a YouTube clip needs its own small full-screen icon. The notice is Chrome's, put up whenever a page goes full screen; a page can't turn it off, so the app goes full screen less. In the installed app (display-mode standalone, or opened from an android-app:// referrer) there is no address bar and the pager already fills the window, so it no longer goes full screen: a wide clip asks the screen to turn without it, and only if that's refused (the browser may allow turning only in full screen) goes full screen — the notice then, but the clip on its side; the screen is let go past that clip, or on closing. A browser tab goes full screen as before. A feed clip's own control bar loses its full-screen button (controlslist=nofullscreen): a tap on the clip is the way, into the pager. YouTube: the player's taps never reach the page, so a layer over a playing clip's picture takes them, leaving YouTube's control bar along the bottom to YouTube; one tap on it — or on the still — plays with sound and takes the clip's box full screen, turned on its side (unMute + playVideo through the iframe API for a player autoplaying muted); full screen the layer steps aside, so all of YouTube's controls are there. YouTube can only fill the screen through Chrome's full screen, so its notice still shows there. tools/fullscreen-notice-test.js (installed app: no full screen, the screen turned and let go, the fallback when turning is refused; no full-screen button on feed clips); tools/youtube-tap-test.js (YouTube stood in for: autoplaying muted, a tap on the control bar stays YouTube's, one tap full screen with unMute and playVideo, the layer aside full screen and back after; with Data Saver, the still to full screen with sound); video-unmute-test stubs ui for its slice of videoNode.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01KPw21NEpWeTGu6swVASmBt

3 files changed, 237 insertions, 0 deletions

diff --git a/tools/fullscreen-notice-test.js b/tools/fullscreen-notice-test.js
new file mode 100644
index 0000000..2861439
--- /dev/null
+++ b/tools/fullscreen-notice-test.js
@@ -0,0 +1,126 @@
+// In the installed app (no address bar: the pager already fills the window)
+// the pager doesn't go full screen — every time it did, Chrome put up its
+// "To exit full screen…" notice. A wide clip asks the screen to turn
+// without it; if that's refused, then full screen (the notice, but the clip
+// on its side). In a browser tab it goes full screen as before
+// (feed-video-pager-test). A feed clip's own bar has no full-screen button:
+// a tap on the clip is the way, into the pager.
+// Run: bun tools/fullscreen-notice-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';
+import { existsSync } from 'node:fs';
+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 clip = (name, size) => {
+  const f = '/tmp/coinos-vpager-' + name + '.webm';
+  if (!existsSync(f)) Bun.spawnSync(['ffmpeg', '-y', '-loglevel', 'error', '-f', 'lavfi', '-i', 'testsrc=size=' + size + ':rate=10', '-t', '30', '-c:v', 'libvpx', '-b:v', '100k', f]);
+  return f;
+};
+const CLIPS = { wide: clip('wide', '320x180'), tall: clip('tall', '180x320'), last: clip('last', '240x240') };
+
+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 server = Bun.serve({ port: 0, fetch: (req) => {
+  const path = new URL(req.url).pathname;
+  const m = /^\/(wide|tall|last)\.webm$/.exec(path);
+  if (m) return new Response(Bun.file(CLIPS[m[1]]), { headers: { 'content-type': 'video/webm' } });
+  if (path.startsWith('/punks') || path === '/verify-worker.js') return new Response(Bun.file('dist' + path));
+  return new Response(html, { headers: { 'content-type': 'text/html' } });
+} });
+const U = (n) => server.url.origin + '/' + n + '.webm';
+const seeded = [
+  post('a wide one ' + U('wide'), 100),
+  post('a tall one ' + U('tall'), 200),
+  post('only words here, nothing to watch', 300),
+  post('the last clip ' + U('last'), 400),
+  ...Array.from({ length: 10 }, (_, i) => post('filler ' + i + ' ' + 'lorem ipsum dolor sit amet. '.repeat(5), 500 + i * 60)),
+];
+
+
+async function run(lockOk) {
+  console.log('\n[the installed app, the screen ' + (lockOk ? 'turning' : 'refusing to turn') + ' without full screen]');
+  const ctx = await browser.createBrowserContext(); // storage of its own: a fresh wallet each run
+  const page = await ctx.newPage();
+  await page.evaluateOnNewDocument((ok) => {
+    const Real = window.WebSocket;
+    window.WebSocket = function (...a) { const ws = new Real(...a); const send = ws.send.bind(ws); ws.send = (d) => { try { const m = JSON.parse(d); if (m[0] === 'REQ') { setTimeout(() => ws.dispatchEvent(new MessageEvent('message', { data: JSON.stringify(['EOSE', m[1]]) })), 0); return; } if (m[0] === 'EVENT') return; } catch {} return send(d); }; return ws; };
+    window.WebSocket.prototype = Real.prototype; Object.assign(window.WebSocket, Real);
+    // the installed app: display-mode standalone
+    const mm = window.matchMedia.bind(window);
+    // (only once the test's wallet is made: the first-run screens differ in the app)
+    const on = () => { try { return localStorage.getItem('__standalone') === '1'; } catch { return false; } };
+    window.matchMedia = (q) => (on() && /display-mode:\s*standalone/.test(q) ? { matches: true, media: q, addEventListener() {}, removeEventListener() {}, addListener() {}, removeListener() {} } : mm(q));
+    window.__orient = [];
+    screen.orientation.lock = (o) => { window.__orient.push('lock:' + o + (document.fullscreenElement ? ':fs' : '')); return ok || document.fullscreenElement ? Promise.resolve() : Promise.reject(new DOMException('not allowed', 'NotSupportedError')); };
+    screen.orientation.unlock = () => { window.__orient.push('unlock'); };
+  }, lockOk);
+  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 st = () => page.evaluate(() => ({ open: !!document.querySelector('.media-pager.videos'), fs: !!document.fullscreenElement, orient: window.__orient.slice() }));
+  const openClip = async (word) => {
+    await page.evaluate((w) => { const r = [...document.querySelectorAll('.notes-feed [data-key]')].find((n) => n.textContent.includes(w)); r.querySelector('video.note-video').scrollIntoView({ block: 'center' }); }, word);
+    await sleep(400);
+    const at = await page.evaluate((w) => { const r = [...document.querySelectorAll('.notes-feed [data-key]')].find((n) => n.textContent.includes(w)); const b = r.querySelector('video.note-video').getBoundingClientRect(); return { x: b.x + b.width * 0.2, y: b.y + b.height * 0.3 }; }, word);
+    await page.mouse.click(at.x, at.y);
+    await waitFor(() => !!document.querySelector('.media-pager.videos'), null, 4000);
+  };
+  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: 'Clip Poster', t: Date.now() } }));
+      localStorage.setItem('btc-wallet-feed:' + k, 'following');
+      localStorage.setItem('__standalone', '1');
+    }, [base, AUTHOR, seeded]);
+    await page.reload({ waitUntil: 'domcontentloaded' });
+    await waitText('receive', 20000);
+    await page.evaluate(() => document.querySelector('.app-nav-button[aria-label="Feed"]').click());
+    await page.waitForSelector('.notes-feed video.note-video', { timeout: 20000 });
+    if (lockOk) check('a feed clip\'s bar has no full-screen button', await waitFor(() => [...document.querySelectorAll('.notes-feed video.note-video')].every((v) => v.getAttribute('controlslist') === 'nofullscreen'), null, 5000));
+    await openClip('a wide one');
+    await sleep(1200);
+    let s = await st();
+    check('a tap on a wide clip opens the pager', s.open);
+    if (lockOk) {
+      check('…not full screen (no notice)', !s.fs, JSON.stringify(s));
+      check('…the screen asked to turn, without full screen', s.orient[0] === 'lock:landscape', JSON.stringify(s.orient));
+    } else {
+      check('…refused, it goes full screen', s.fs, JSON.stringify(s));
+      check('…and turns there', s.orient.includes('lock:landscape:fs'), JSON.stringify(s.orient));
+    }
+    await page.keyboard.press('ArrowDown'); await sleep(1200);
+    check('past it, the screen is let go', (await st()).orient.includes('unlock'), JSON.stringify((await st()).orient));
+    await page.keyboard.press('Escape');
+    check('Escape closes it', await waitFor(() => !document.querySelector('.media-pager') && !document.fullscreenElement, null, 3000));
+    if (lockOk) {
+      const n = (await st()).orient.length;
+      await openClip('a tall one'); await sleep(1200);
+      s = await st();
+      check('a tall clip: the pager, no full screen, the screen left alone', s.open && !s.fs && s.orient.length === n, JSON.stringify(s));
+      await page.keyboard.press('Escape'); await sleep(600);
+    }
+    check('no page errors', errs.length === 0, errs.slice(0, 2).join(' | '));
+  } finally { await ctx.close(); }
+}
+const browser = await puppeteer.launch({ executablePath: '/usr/bin/google-chrome', headless: 'new', args: ['--no-sandbox', '--autoplay-policy=no-user-gesture-required'] });
+try { await run(true); await run(false); } finally { await browser.close(); server.stop(true); }
+console.log(ok ? '\n✅ the installed app\'s pager skips full screen (and its notice) where it can' : '\n❌ failed');
+process.exit(ok ? 0 : 1);
diff --git a/tools/video-unmute-test.js b/tools/video-unmute-test.js
index 6aef88e..e352c36 100644
--- a/tools/video-unmute-test.js
+++ b/tools/video-unmute-test.js
@@ -21,6 +21,7 @@ const server = Bun.serve({ port: 5302, fetch(req) {
   const videoThumbs = new Map(), videoInfo = new Map(), tappedClips = new Set();
   const feedMedia = () => null, rememberVideo = () => {}, probeVideo = async () => {}, videoHeavy = () => false, heavyLabel = () => '';
   const APP_BASE = 'https://v3.coinos.io';
+  const ui = {}; // (not the feed: which page is showing decides the full-screen button)
   ${dom}
   ${video}
   const url = '/clip.webm';
diff --git a/tools/youtube-tap-test.js b/tools/youtube-tap-test.js
new file mode 100644
index 0000000..271277f
--- /dev/null
+++ b/tools/youtube-tap-test.js
@@ -0,0 +1,110 @@
+// A YouTube clip in a post takes one tap, like any clip: on the picture —
+// the still, or the player already going (autoplayed, muted) — it plays with
+// sound, full screen. The player's own taps never reach the page, so a layer
+// over the picture takes them; YouTube's control bar along the bottom is
+// left to YouTube, and full screen the layer steps aside.
+// Run: bun tools/youtube-tap-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 = Bun.spawnSync(['ffmpeg', '-loglevel', 'error', '-f', 'lavfi', '-i', 'testsrc=size=480x360', '-frames:v', '1', '-f', 'image2', '-c:v', 'png', 'pipe:1']).stdout;
+
+const SK = generateSecretKey(), AUTHOR = getPublicKey(SK);
+const now = Math.floor(Date.now() / 1000);
+const POSTS = [
+  finalizeEvent({ kind: 1, created_at: now - 100, tags: [], content: 'watch this https://www.youtube.com/watch?v=dQw4w9WgXcQ' }, SK),
+  ...Array.from({ length: 4 }, (_, i) => finalizeEvent({ kind: 1, created_at: now - 200 - i * 60, tags: [], content: 'filler ' + i + ' ' + 'lorem ipsum dolor sit amet. '.repeat(5) }, SK)),
+];
+const html = await buildHtml({ minify: true, pwa: false });
+const server = Bun.serve({ port: 0, fetch: (req) => {
+  const path = new URL(req.url).pathname;
+  if (path.startsWith('/punks') || path === '/verify-worker.js') return new Response(Bun.file('dist' + path));
+  return new Response(html, { headers: { 'content-type': 'text/html' } });
+} });
+// YouTube, stood in for: the player page notes every command it is sent
+const PLAYER = '<!doctype html><html><body style="margin:0;background:#222;height:100vh"><script>window.__cmds=[];addEventListener("message",(e)=>{try{const m=JSON.parse(e.data);if(m.event==="command")window.__cmds.push(m.func)}catch{}});</script></body></html>';
+
+const browser = await puppeteer.launch({ executablePath: '/usr/bin/google-chrome', headless: 'new', args: ['--no-sandbox', '--autoplay-policy=no-user-gesture-required'] });
+async function run(saveData) {
+  console.log('\n[' + (saveData ? 'Data Saver: the still first' : 'autoplay: the player already going, muted') + ']');
+  const ctx = await browser.createBrowserContext();
+  const page = await ctx.newPage();
+  await page.setRequestInterception(true);
+  page.on('request', (r) => {
+    const u = r.url();
+    if (u.startsWith('https://www.youtube-nocookie.com/embed/')) return r.respond({ status: 200, contentType: 'text/html', body: PLAYER });
+    if (u.startsWith('https://i.ytimg.com/')) return r.respond({ status: 200, contentType: 'image/png', body: png });
+    return r.continue();
+  });
+  await page.evaluateOnNewDocument((sd) => {
+    if (sd) Object.defineProperty(navigator, 'connection', { configurable: true, get: () => ({ saveData: true, effectiveType: '4g', addEventListener() {}, removeEventListener() {} }) });
+    const Real = window.WebSocket;
+    window.WebSocket = function (...a) { const ws = new Real(...a); const send = ws.send.bind(ws); ws.send = (d) => { try { const m = JSON.parse(d); if (m[0] === 'REQ') { setTimeout(() => ws.dispatchEvent(new MessageEvent('message', { data: JSON.stringify(['EOSE', m[1]]) })), 0); return; } if (m[0] === 'EVENT') return; } catch {} return send(d); }; return ws; };
+    window.WebSocket.prototype = Real.prototype; Object.assign(window.WebSocket, Real);
+  }, saveData);
+  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 box = () => page.evaluate(() => { const b = document.querySelector('.notes-feed .yt-embed').getBoundingClientRect(); return { x: b.x, y: b.y, w: b.width, h: b.height }; });
+  const st = () => page.evaluate(() => { const b = document.querySelector('.yt-embed'); const f = b && b.querySelector('iframe'); const sh = b && b.querySelector('.yt-shield'); return { fs: !!b && document.fullscreenElement === b, iframe: !!f, muted: !!f && /mute=1/.test(f.src), shield: !!sh && getComputedStyle(sh).display !== 'none', thread: !!document.querySelector('.thread-card') }; });
+  const cmds = async () => { const f = page.frames().find((x) => x.url().startsWith('https://www.youtube-nocookie.com/')); return f ? f.evaluate(() => window.__cmds.slice()) : null; };
+  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: 'Tuber', t: Date.now() } }));
+      localStorage.setItem('btc-wallet-feed:' + k, 'following');
+    }, [base, AUTHOR, POSTS]);
+    await page.reload({ waitUntil: 'domcontentloaded' });
+    await waitText('receive', 20000);
+    await page.evaluate(() => document.querySelector('.app-nav-button[aria-label="Feed"]').click());
+    await page.waitForSelector('.notes-feed .yt-embed', { timeout: 20000 });
+    await page.evaluate(() => document.querySelector('.notes-feed .yt-embed').scrollIntoView({ block: 'center' }));
+    await sleep(1500);
+    let s = await st();
+    if (!saveData) {
+      check('in view, the player loads by itself, muted', s.iframe && s.muted, JSON.stringify(s));
+      check('…with a layer over its picture', s.shield);
+      await waitFor(() => !!document.querySelector('.yt-embed iframe'), null, 3000);
+      await sleep(500);
+      // YouTube's control bar along the bottom is YouTube's
+      let b = await box();
+      await page.mouse.click(b.x + b.w * 0.3, b.y + b.h - 20); await sleep(500);
+      check('a tap on YouTube\'s control bar stays YouTube\'s', !(await st()).fs && !(await st()).thread, JSON.stringify(await st()));
+    } else {
+      check('with Data Saver, the still and a play button', !s.iframe && await page.evaluate(() => !!document.querySelector('.yt-embed .yt-play')), JSON.stringify(s));
+    }
+    const b = await box();
+    await page.mouse.click(b.x + b.w * 0.3, b.y + b.h * 0.35);
+    check('one tap on the picture: full screen', await waitFor(() => document.fullscreenElement === document.querySelector('.yt-embed'), null, 3000), JSON.stringify(await st()));
+    s = await st();
+    check('…the player there', s.iframe);
+    check('…with sound', saveData ? !s.muted : (await waitFor(() => true, null, 300)) && (await cmds())?.includes('unMute'), saveData ? JSON.stringify(s) : JSON.stringify(await cmds()));
+    if (!saveData) check('…playing', (await cmds())?.includes('playVideo'));
+    check('…not the thread', !s.thread);
+    check('full screen, the layer steps aside (YouTube\'s controls are all there)', !s.shield, JSON.stringify(s));
+    await page.evaluate(() => document.exitFullscreen()); await sleep(500);
+    s = await st();
+    check('out of full screen, the layer is back', s.shield && !s.fs, JSON.stringify(s));
+    check('no page errors', errs.length === 0, errs.slice(0, 2).join(' | '));
+  } finally { await ctx.close(); }
+}
+try { await run(false); await run(true); } finally { await browser.close(); server.stop(true); }
+console.log(ok ? '\n✅ a YouTube clip: one tap, full screen, with sound' : '\n❌ failed');
+process.exit(ok ? 0 : 1);