feat: integrate Just Works app and native business setup

Preserve hosted website UX inside Archipelago, add isolated Business and owner-authorized native wallet setup, and include deployment handoff. Based on main with native signer import already accepted.

docker/justworks/business/public/assets/nsite-live.js

@@ -0,0 +1,34 @@
+const prefix = location.pathname.split('/').slice(0, -1).join('/');
+const mount = document.querySelector('#mount');
+let syncing = false;
+addEventListener('message',event=>{const frame=mount.querySelector('iframe');if(!frame||event.source!==frame.contentWindow||event.data?.type!=='napplet.resize')return;const height=Math.max(320,Math.min(4000,Number(event.data.height)||0));frame.style.height=`${height}px`});
+
+async function tableToken() {
+  const existing = new URLSearchParams(location.search).get('table');
+  if (existing) return existing;
+  const dashboard = await fetch(`${prefix}/api/dashboard`, { cache: 'no-store' }).then(response => response.json());
+  const table = dashboard.tables.find(item => item.table_number === 21) || dashboard.tables[0];
+  history.replaceState(null, '', `${location.pathname}?table=${encodeURIComponent(table.token)}`);
+  return table.token;
+}
+
+async function syncActivation() {
+  if (syncing) return;
+  syncing = true;
+  try {
+    const config = await fetch(`${prefix}/api/config`, { cache: 'no-store' }).then(response => response.json());
+    const frame = mount.querySelector('iframe');
+    if (!config.module_enabled && frame) {
+      mount.className = 'napplet off';
+      mount.textContent = 'Order to Table is currently disabled by the merchant.';
+    } else if (config.module_enabled && !frame) {
+      const token = await tableToken();
+      mount.className = 'napplet';
+      mount.innerHTML = `<iframe title="Order to Table napplet shell" src="${prefix}/embed?table=${encodeURIComponent(token)}"></iframe>`;
+    }
+  } finally {
+    syncing = false;
+  }
+}
+
+window.setInterval(() => syncActivation().catch(() => {}), 700);