Join page: Trust Wallet loop rescue - DApp-Browser enable deep link + mark MetaMask path recommended

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

private/join-now.html

@@ -24,8 +24,9 @@
     <div id="walletHelp" style="display:none;margin-top:14px;padding:14px;border:1px solid var(--line);border-radius:12px;background:#08192880">
       <div style="font-weight:800;margin-bottom:6px">📱 On your phone? Open this page inside your wallet app.</div>
       <p style="color:var(--muted);font-size:13px;margin:0 0 10px">Mobile browsers can't see your wallet — but your wallet app has its own browser that can. Tap your wallet below and this exact page (with the right sponsor) opens inside it, ready to connect:</p>
-      <a id="mmDeep" class="btn btn-secondary" style="width:100%;margin-bottom:8px" href="#">🦊 Open in MetaMask</a>
+      <a id="mmDeep" class="btn btn-secondary" style="width:100%;margin-bottom:8px" href="#">🦊 Open in MetaMask (recommended)</a>
       <a id="twDeep" class="btn btn-secondary" style="width:100%" href="#">🛡️ Open in Trust Wallet</a>
+      <p class="micro" style="margin:8px 0 0">⚠️ <strong>Trust Wallet bouncing you back here?</strong> Trust's built-in browser is switched off by default. <a href="https://link.trustwallet.com/browser_enable" rel="noopener">Tap here to switch it on</a> (or in Trust: Settings → Preferences → DApp Browser → enable), then tap "Open in Trust Wallet" again.</p>
       <p class="micro" style="margin:10px 0 0">Don't have a wallet yet? <a href="/training">Video 2 in the training</a> shows how to set one up safely (2 minutes). On a computer, install the MetaMask browser extension and refresh this page.</p>
     </div>
     <div id="connected" style="display:none">