Join page: silent wallet auto-detect on load (eth_accounts, no prompts) + Trust deep link coin_id=966 so it opens the join page, not the site root

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

public/join-now.js

@@ -78,14 +78,8 @@
     }catch(e){ log('Could not open MoonPay: '+(e.message||e),'err'); }
   }
 
-  async function connect(){
+  async function finishConnect(){
-    try{
+    await loadCosts();
-      eth=await window.RMCWallet.pick();
-      if(!eth){ showWalletHelp(); log('No wallet detected in this browser. On a phone, use the "Open in your wallet" buttons above — on a computer, install/unlock MetaMask and refresh.','err'); return; }
-      attachWalletEvents();
-      log('Requesting wallet connection…');
-      var accs=await req('eth_requestAccounts'); account=accs[0];
-      await ensurePolygon(); await loadCosts();
     $('wallet').textContent=account.slice(0,6)+'…'+account.slice(-4);
     $('connected').style.display='block'; $('connectBtn').style.display='none';
     await refreshBalance();
@@ -93,9 +87,43 @@
     var pos=await readPosition(account);
     if(pos){ $('already').style.display='block'; $('already').innerHTML='This wallet already holds position — <a href="/my">open your dashboard</a>. To create a <em>new</em> position, connect a different wallet.'; $('joinBtn').disabled=true; }
     $('joinBox').style.display='block';
+  }
+  async function connect(){
+    try{
+      eth=await window.RMCWallet.pick();
+      if(!eth){ showWalletHelp(); log('No wallet detected in this browser. On a phone, use the "Open in your wallet" buttons above — on a computer, install/unlock MetaMask and refresh.','err'); return; }
+      attachWalletEvents();
+      log('Requesting wallet connection…');
+      var accs=await req('eth_requestAccounts'); account=accs[0];
+      await ensurePolygon();
+      await finishConnect();
       log('Connected. Review the amount, then Join.','ok');
     }catch(e){ log('Connect failed: '+(e.message||e),'err'); }
   }
+  // Inside a wallet's in-app browser the wallet is often ALREADY connected —
+  // recognize it silently on load (eth_accounts never prompts) instead of
+  // greeting a connected user like a stranger. Skipped when multiple wallets
+  // are injected (desktop) so no picker UI ever pops uninvited.
+  async function autoDetect(){
+    try{
+      var list=window.RMCWallet.list();
+      var p=list.length===1?list[0].provider:(list.length===0?window.ethereum:null);
+      if(!p) return;
+      eth=p; attachWalletEvents();
+      var accs=await req('eth_accounts',[]);
+      if(!accs||!accs.length){ log('✅ Wallet detected in this browser — tap "Connect wallet" to continue.','ok'); return; }
+      account=accs[0];
+      var cid=await req('eth_chainId');
+      if(cid===POLYGON_HEX){
+        await finishConnect();
+        log('✅ Already connected as '+account.slice(0,6)+'…'+account.slice(-4)+'. Review the amount, then Join.','ok');
+      }else{
+        $('wallet').textContent=account.slice(0,6)+'…'+account.slice(-4);
+        $('connected').style.display='block';
+        log('Wallet connected ('+account.slice(0,6)+'…'+account.slice(-4)+') but on another network — tap "Connect wallet" to switch to Polygon and continue.','ok');
+      }
+    }catch(e){}
+  }
 
   async function doJoin(){
     try{
@@ -150,7 +178,7 @@
     var box=$('walletHelp'); if(!box) return;
     var here=location.host+location.pathname+location.search;
     var mm=$('mmDeep'); if(mm) mm.href='https://metamask.app.link/dapp/'+here;
-    var tw=$('twDeep'); if(tw) tw.href='https://link.trustwallet.com/open_url?url='+encodeURIComponent(location.href);
+    var tw=$('twDeep'); if(tw) tw.href='https://link.trustwallet.com/open_url?coin_id=966&url='+encodeURIComponent(location.href);
     box.style.display='block';
   }
 
@@ -165,5 +193,6 @@
     $('joinBtn').addEventListener('click',doJoin);
     var fb=$('fundBtn'); if(fb)fb.addEventListener('click',openMoonpay);
     var fr=$('fundRefresh'); if(fr)fr.addEventListener('click',function(){ log('Checking your balance…'); refreshBalance(); });
+    setTimeout(autoDetect,350); // let EIP-6963 announcements land first
   });
 })();