/developers: long commands scroll inside their code blocks instead of widening the page (858 px wide at 768 px, found by the browser check, Host scripts/browser-check.js, WS-Q task 3), and each block is focusable with a visible focus ring so a keyboard can scroll it; test: apps/gateway/test/developers-page.test.js

ddiff --git a/apps/gateway/server/pages/site.js b/apps/gateway/server/pages/site.js
iindex bbbbcf9..da9beb3 100644
---- a/apps/gateway/server/pages/site.js
++++ b/apps/gateway/server/pages/site.js
@@@ -42,6 +42,7 @@ const CSS = `
  body{margin:0;background:var(--bg-primary,#0a0f18);color:var(--text-primary,#e6edf7);font:400 16px/1.55 Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
  a{color:var(--accent-light,var(--accent,#60a5fa))}
  .wrap{max-width:1180px;margin:0 auto;padding:0 20px}
++pre{max-width:100%;overflow-x:auto}pre:focus-visible{outline:2px solid var(--accent,#3b82f6);outline-offset:2px}
  .topbar{display:flex;align-items:center;gap:14px;padding:12px 20px;border-bottom:1px solid var(--border,rgba(255,255,255,.08))}
  .topbar a{color:inherit;text-decoration:none;font-weight:700}.topbar nav{display:flex;gap:14px;margin-left:auto;font-size:14px;flex-wrap:wrap}.topbar nav a{font-weight:500;color:var(--text-secondary,#a8b3c4)}
  .hero{padding:clamp(28px,6vw,64px) 0 8px;text-align:center}
@@@ -246,7 +247,8 @@ function pageDevelopers() {
      const { families } = registry.get();
      const snap = require('../registry/descriptors').snapshot();
      const withApi = snap.tools.filter((t) => t.api && t.status !== 'unavailable');
--    const code = (s) => `<pre><code>${esc(s)}</code></pre>`;
++    // A long command scrolls inside its block, not the page (it overflowed at 768 px); tabindex lets a keyboard scroll it.
++    const code = (s) => `<pre tabindex="0"><code>${esc(s)}</code></pre>`;
      const body = `<nav class="crumbs" aria-label="Breadcrumb"><a href="/">Tools</a> › Developers</nav><div class="page-h">${icon('code', 56)}<h1>Tools API</h1></div>
  <p class="lead">${withApi.length} of ${snap.tools.length} tools can be called from code, with the same engines the pages use. One request shape for all of them; long work runs as a job you can follow.</p>
  <section><div class="sec-h"><h2>Discover</h2></div><p class="sec-p">Every tool is described by a machine-readable descriptor (inputs as JSON Schema, file limits, how it runs, who may call it).</p>
ddiff --git a/apps/gateway/test/developers-page.test.js b/apps/gateway/test/developers-page.test.js
nnew file mode 100644
iindex 0000000..b4b73c8
---- /dev/null
++++ b/apps/gateway/test/developers-page.test.js
@@@ -0,0 +1,25 @@
++'use strict';
++// /developers (the Tools API page): its long commands scroll inside their blocks instead of widening the page
++// (the browser check, Host scripts/browser-check.js, found the page 858 px wide at 768 px), and a block that
++// scrolls can be reached by keyboard.
++const assert = require('assert');
++const http = require('http');
++const express = require('express');
++const site = require('../server/pages/site');
++
++(async () => {
++    const app = express();
++    app.use(site.createSiteRouter());
++    const srv = http.createServer(app);
++    await new Promise((r) => srv.listen(0, '127.0.0.1', r));
++    try {
++        const r = await fetch(`http://127.0.0.1:${srv.address().port}/developers`);
++        assert.strictEqual(r.status, 200);
++        const html = await r.text();
++        assert.ok(/pre\{max-width:100%;overflow-x:auto\}/.test(html), 'code blocks scroll inside');
++        const pres = html.match(/<pre[^>]*>/g) || [];
++        assert.ok(pres.length >= 1, 'the page shows commands');
++        assert.ok(pres.every((p) => p === '<pre tabindex="0">'), 'every block is focusable');
++        console.log('developers page: all checks passed');
++    } finally { srv.close(); }
++})().catch((e) => { console.error(e); process.exit(1); });