Queue executable speed and peer-to-peer sharing plans with tested patches and harnesses

plans/harness/rehydrate-check.mjs

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+// Plan 018 harness check: a holder is asked to restore an evicted copy.
+import { chromium } from 'playwright';
+const b = await chromium.launch({ executablePath: process.env.CHROMIUM || '/opt/pw-browsers/chromium-1194/chrome-linux/chrome' });
+const p = await b.newPage();
+await p.goto('http://localhost:8771/');
+const out = await p.evaluate(async () => {
+  const bytes = new Uint8Array(await (await fetch('/fixture.mp4')).arrayBuffer());
+  const dir = await (await navigator.storage.getDirectory()).getDirectoryHandle('videos', { create: true });
+  const w = await (await dir.getFileHandle('goneAAAAAAA.mp4', { create: true })).createWritable();
+  await w.write(bytes); await w.close();
+  P2PClient.start({ getSettings: () => ({}) });
+  const rep = await P2PClient.sync(); // hashes the file, reports it → accepted (cid is verified content)
+  for (let i = 0; i < 50 && !P2PClient.isConnected(); i++) await new Promise((r) => setTimeout(r, 100));
+  const s1 = await (await fetch('/api/streams?v=goneAAAAAAA')).json();
+  let dbg;
+  for (let i = 0; i < 50; i++) { dbg = await (await fetch('/debug')).json(); if (dbg.adopted.length) break; await new Promise((r) => setTimeout(r, 200)); }
+  const s2 = await (await fetch('/api/streams?v=goneAAAAAAA')).json();
+  return { accepted: rep.accepted.length, first: s1, adopted: dbg.adopted.map((a) => [a.videoId, a.sha256 === dbg.cid]), second: s2 };
+});
+console.log(JSON.stringify(out));
+await b.close();