dsh-remote 0.5.0: node settings, session-cookie edge auth, sign-in popup

- Settings → Remote devices → Node: type master|slave (stored in state, beats
  config role; Restart DSH button under systemd/launchd), origin (read-only:
  own origin / paired master), 'Master has an auth middleware' toggle
- middleware on: a non-DSH answer on the link (login redirect, 401/403, inline
  HTML) raises auth-required; the UI opens <master>/dsh-remote/signin in a popup,
  the user signs in to the proxy, one click hands the proxy session cookie back
  (postMessage, origin-checked, trusted origins only), link retries
- edge mode 'cookie': pasted authentik_proxy_… (or a whole Cookie header),
  rotated proxy cookies persisted back; pair.mjs/install-mac --edge cookie
- connectMaster serialised; a failed attempt never clears a finished link
- tests: cookie seed/mode, HTML login wall; e2e-signin against a fake proxy

deploy/e2e-settings.mjs

@@ -34,12 +34,9 @@ await sleep(10000)
 // Open "Change" on the edge card to show the form, and switch it to Basic.
 console.log(await evalJs(`(() => {
   const root = document.querySelector('[data-dsh-plugin="dsh-remote"]'); if (!root) return 'no settings panel'
-  const btn = [...root.querySelectorAll('button')].find((b) => b.textContent === 'Change'); if (btn) btn.click()
-  return 'panel: ' + root.innerText.replace(/\\n+/g, ' | ').slice(0, 500)
+  return 'panel: ' + root.innerText.replace(/\\n+/g, ' | ').slice(0, 700)
 })()`))
-await sleep(800)
-await evalJs(`(() => { const sel = [...document.querySelectorAll('[data-dsh-plugin="dsh-remote"] select')].pop(); if (!sel) return; const set = Object.getOwnPropertyDescriptor(HTMLSelectElement.prototype, 'value').set; set.call(sel, 'basic'); sel.dispatchEvent(new Event('change', { bubbles: true })) })()`)
-await sleep(800)
+await sleep(500)
 await evalJs(`document.querySelector('[data-dsh-plugin="dsh-remote"]')?.scrollIntoView()`)
 const r = await send('Page.captureScreenshot', { format: 'png' })
 fs.writeFileSync(out, Buffer.from(r.result.data, 'base64'))