Sponsor pre-check alert: only the checkout call may alert (the dashboard's display-only call never does), and the alert says what it is: a heads-up before the sale, nothing paid yet

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

public/assets/my.js

@@ -14,7 +14,7 @@
   // if they arrived through a sponsor's link, show who they're joining under
   (async () => {
     try {
-      const sp = await (await fetch('/api/sponsor')).json();
+      const sp = await (await fetch('/api/sponsor?intent=view')).json(); // display only: never an alert
       if (sp && sp.invited && sp.name && $('sponsorNote')) { $('sponsorNoteName').textContent = sp.name; $('sponsorNote').hidden = false; }
     } catch (e) {}
   })();
@@ -2217,7 +2217,7 @@
             }
             if (cur !== wantAddr) throw new Error('Your wallet connected as ' + cur.slice(0, 6) + '…' + cur.slice(-4) + ' but you chose ' + wantAddr.slice(0, 6) + '…' + wantAddr.slice(-4) + '. Switch accounts in your wallet app and try again.');
           }
-          const spNow = fromPos ? { sponsorId: meNow.memberId } : await jretry('/api/sponsor');
+          const spNow = fromPos ? { sponsorId: meNow.memberId } : await jretry('/api/sponsor?intent=buy');
           if (!fromPos && !meNow.memberId && spNow.sponsorBlocked) { IAP.status(sponsorHoldText(spNow), 'bad'); return; } // first activation must not hand a sponsored member to the company
           if (!fromPos && !meNow.memberId && spNow.sponsorRouted) IAP.status((spNow.sponsorRouted.from || 'Your sponsor') + ' has not switched on payouts, so this purchase credits ' + spNow.sponsorRouted.to + ' instead. You are not held up; carrying on.', 'ok');
           // pre-flight: stop early if the POL is not there. Trust Wallet also hard-blocks any