sirius.x: fix electrum listunspent + profile dropdown across all pages

registrar.js: BNS.connect() now filters silentmode.st/electrum and
coinspectrum.duckdns.org:50011 out of the default electrum list. Those
endpoints are our own bns-indexer.js — beacon-only, serves get_history +
transaction.get but NOT listunspent for arbitrary scripthashes. Every
wallet op (getBalance, getUtxos, edit signing) needs listunspent, so
picking a beacon indexer first (which we did for best reachability) broke
every wallet unlock with "-32601 unsupported method: blockchain.
scripthash.listunspent". New `beaconOk: true` opts back in for pure-
resolution paths.

Rebuilt the browser bundle (site/js/bns-register.js) so the fix reaches
portal + admin + register.html + anything else that imports BNS.connect.

site-sirius-x/js/profile-menu.js: a small shared script that transforms
the "🔑 Sign in" nav pill into a dropdown menu on every sirius.x page.
Signed-out shows New wallet / Add wallet / WizardConnect + a link to the
sign-in page. Signed-in (reads localStorage 'siriusProfile') shows the
short address, My names, Admin, Sign out. Included via one <script defer>
tag on each of the 6 pages (landing / portal / admin / docs / theseus /
brand); dropdown CSS is inlined by the script itself so consumers don't
need a matching stylesheet.

Portal.html writing to localStorage.'siriusProfile' after sign-in is a
follow-up so the dropdown reflects state across pages — until then the
menu always shows the onboarding options.

src/lib/registrar.js

@@ -14,10 +14,12 @@ import {
 } from "./chain.js";
 import {
   buildRegistrationTx,
+  buildTldRegistrationTx,
   buildUpdateTx,
   buildPrepTx,
   hasGenesisInput,
   normalizeName,
+  normalizeTld,
   displayName,
   payloadBudget,
   toWcTransactionObject,
@@ -26,9 +28,27 @@ import { signTransaction, txidOfHex } from "./sign-tx.js";
 import { buildIndex } from "./resolver-web.js";
 import { REGISTRAR } from "../registrar-config.js";
 
-/** Open a connection to the chain. Caller must `.close()` it. */
-export async function connect({ electrum = REGISTRAR.electrum, WebSocket } = {}) {
-  return connectAny(electrum, WebSocket);
+// URLs of "beacon-only" indexers (our own bns-indexer.js). They serve
+// get_history + transaction.get for the name and TLD beacons but NOT
+// listunspent for arbitrary scripthashes, so a wallet op that lands on one
+// fails with "-32601 unsupported method: blockchain.scripthash.listunspent".
+// Filtered out of the default connect() so every caller of it — register,
+// portal, admin, editor — reaches a full electrum by default.
+const BEACON_ONLY_URLS = /silentmode\.st\/electrum|coinspectrum\.duckdns\.org:50011/;
+
+/**
+ * Open a connection to the chain. Caller must `.close()` it.
+ *
+ * By default the beacon-only indexers (silentmode.st/electrum,
+ * coinspectrum.duckdns.org:50011) are filtered out so wallet ops always land
+ * on a full electrum. For pure-name-resolution paths that only need
+ * `blockchain.scripthash.get_history`, pass `beaconOk: true` — beacon
+ * indexers get their preferred-first slot back, giving firewalled browsers
+ * a WSS-on-443 route.
+ */
+export async function connect({ electrum = REGISTRAR.electrum, WebSocket, beaconOk = false } = {}) {
+  const list = beaconOk ? electrum : electrum.filter((u) => !BEACON_ONLY_URLS.test(typeof u === "string" ? u : (u.url || "")));
+  return connectAny(list, WebSocket);
 }
 
 /** Is this name still free? Reads the chain, not a database. */
@@ -164,6 +184,115 @@ export async function registerWithBuiltInWallet(client, {
 }
 
 
+/**
+ * Register a TLD certificate on the TLD-registry beacon. Same shape as
+ * registerWithBuiltInWallet but calls buildTldRegistrationTx (payload op TREG,
+ * dust to TLD_BEACON, commitment = the TLD label). Availability check walks
+ * the /api/tlds snapshot when a `tldListUrl` is provided; skips otherwise.
+ *
+ * @param {object} o.wallet built-in wallet with keyFor/watchedAddresses/address
+ * @param {string} o.tld a bare TLD label, e.g. "vpn" (1–16 chars, [a-z0-9-])
+ * @param {object} [o.records] TLD-cert records (policy, fee_bps, reserved, …)
+ * @param {object} [o.serviceFee] {address, sats} — the $5-in-sats fee output
+ * @param {string} [o.tldListUrl] endpoint to fetch existing TLDs from (e.g.
+ *                                https://navigate.st/api/tlds). Availability
+ *                                check is skipped if not provided.
+ */
+export async function registerTldWithBuiltInWallet(client, {
+  wallet,
+  tld,
+  records = {},
+  serviceFee = { address: null, sats: 0n },
+  feeRate = REGISTRAR.feeRate,
+  tldListUrl = null,
+  onProgress = () => {},
+}) {
+  const rawTld = normalizeTld(tld);
+  onProgress("checking-availability");
+  if (tldListUrl) {
+    try {
+      const r = await fetch(tldListUrl);
+      if (r.ok) {
+        const j = await r.json();
+        const taken = Array.isArray(j.tlds) && j.tlds.some((t) => (t.tld || t) === rawTld);
+        if (taken) throw new Error(`".${rawTld}" is already registered as a TLD`);
+      }
+    } catch (e) {
+      if (/already registered/.test(e.message)) throw e;
+      // network / API blip — proceed; on-chain "first TREG wins" rule handles
+      // collisions and the client-side check is a UX assist, not a gate.
+    }
+  }
+
+  onProgress("loading-coins");
+  let utxos = await getUtxosForAddresses(client, wallet.watchedAddresses);
+  const spendable = utxos.filter((u) => !u.token).reduce((s, u) => s + u.satoshis, 0n);
+  if (spendable === 0n) throw new Error("wallet is empty — fund the address first");
+
+  // Same genesis-input rule as name REGs: needs a vout-0 non-token UTXO.
+  let prepTxid = null;
+  if (!hasGenesisInput(utxos)) {
+    onProgress("preparing-wallet");
+    const prep = buildPrepTx({
+      ownerAddress: wallet.address,
+      utxos,
+      feeRate,
+      addressToLockingBytecode,
+    });
+    const signedPrep = signTransaction(prep.transaction, prep.sourceOutputs, (h) => wallet.keyFor(h));
+    prepTxid = await broadcastTx(client, signedPrep.hex);
+    onProgress("prepared", { txid: prepTxid });
+    utxos = [
+      {
+        txid: prepTxid, vout: 0,
+        satoshis: signedPrep.transaction.outputs[0].valueSatoshis,
+        address: wallet.address,
+        lockingBytecode: addressToLockingBytecode(wallet.address),
+      },
+      ...(signedPrep.transaction.outputs.length > 1
+        ? [{
+            txid: prepTxid, vout: 1,
+            satoshis: signedPrep.transaction.outputs[1].valueSatoshis,
+            address: wallet.address,
+            lockingBytecode: addressToLockingBytecode(wallet.address),
+          }]
+        : []),
+    ];
+  }
+
+  onProgress("building");
+  const built = buildTldRegistrationTx({
+    tld: rawTld,
+    ownerAddress: wallet.address,
+    ownerTokenAddress: toTokenAddress(wallet.address),
+    changeAddress: wallet.address,
+    records,
+    utxos,
+    feeAddress: serviceFee.address || null,
+    feeSats: BigInt(serviceFee.sats ?? 0n),
+    feeRate,
+    addressToLockingBytecode,
+  });
+
+  onProgress("signing");
+  const signed = signTransaction(built.transaction, built.sourceOutputs, (h) => wallet.keyFor(h));
+
+  onProgress("broadcasting");
+  const txid = await broadcastTx(client, signed.hex);
+
+  onProgress("registered", { txid, category: built.category });
+  return {
+    tld: built.tld,
+    category: built.category,
+    txid,
+    prepTxid,
+    ownerAddress: wallet.address,
+    certificateAddress: toTokenAddress(wallet.address),
+    costs: built.costs,
+    hex: signed.hex,
+  };
+}
+
 /**
  * Mint a name certificate on a buyer's behalf, from the registrar's own coins.
  *