Wallet: recover from a dead WalletConnect session instead of failing the buy

Probe the session after connect and retry once after a "disconnected" send
error by wiping the stale session and re-opening the picker (Trust kills the
session after its own security stop).

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

public/assets/wallet.js

@@ -85,6 +85,24 @@ window.IAPWallet = (function () {
 
   function eth() { if (!provider) throw new Error('Connect your wallet first.'); return provider; }
 
+  // A WalletConnect session can die underneath AppKit's cached "connected"
+  // state: the wallet app rejects or kills it (Trust does this after its own
+  // security stop), the phone sleeps, the relay drops. AppKit still reports an
+  // address, so the next request fails with a "disconnected" style error.
+  // Detect that, wipe the stale session, and re-open the picker for a fresh one.
+  const DEAD_RE = /disconnect|not connected|no matching key|session (topic|expired|deleted|not found)|call connect|please call connect|missing or invalid|relay/i;
+  const isDead = e => DEAD_RE.test(String((e && e.message) || e || ''));
+  async function freshConnect(c) {
+    try { IAP.status('Your wallet session dropped. Reconnect in the picker…'); } catch (e) {}
+    await disconnect();
+    try { await modal.open(); } catch (e) {}
+    const addr = await waitForConnection(180000);
+    try { if (modal && modal.close) await modal.close(); } catch (e) {}
+    provider = await resolveProvider();
+    await ensureChain(c).catch(() => {});
+    return addr;
+  }
+
   async function connect() {
     const c = await IAP.getConfig();
     await initAppKit(c);
@@ -97,6 +115,9 @@ window.IAPWallet = (function () {
     if (!addr) { try { await modal.open(); } catch (e) {} addr = await waitForConnection(180000); }
     try { if (modal && modal.close) await modal.close(); } catch (e) {} // dismiss the picker once we're connected
     provider = await resolveProvider();
+    // probe the session: a dead WalletConnect session answers with a disconnect error
+    try { await provider.request({ method: 'eth_chainId' }); }
+    catch (e) { if (isDead(e)) return freshConnect(c); }
     await ensureChain(c).catch(() => {}); // AppKit already connects on the right network; switch is best-effort
     return addr;
   }
@@ -159,7 +180,14 @@ window.IAPWallet = (function () {
         tx.maxFeePerGas = g.maxFeePerGas;
       }
     } catch (e) {}
-    return eth().request({ method: 'eth_sendTransaction', params: [tx] });
+    try {
+      return await eth().request({ method: 'eth_sendTransaction', params: [tx] });
+    } catch (e) {
+      if (!isDead(e)) throw e;
+      // session died between connect and send: reconnect once and resend
+      tx.from = await freshConnect(c);
+      return eth().request({ method: 'eth_sendTransaction', params: [tx] });
+    }
   }
 
   async function waitTx(hash) {

public/index.html

@@ -439,7 +439,7 @@
 </section>
 
 <script src="/assets/common.js?v=20260909a"></script>
-<script src="/assets/wallet.js?v=20260908t"></script>
+<script src="/assets/wallet.js?v=20260909a"></script>
 <script src="/assets/home.js?v=20260906m"></script>
 <script src="/assets/chat.js?v=20260906m"></script>
 </body>

public/my.html

@@ -735,7 +735,7 @@
   </div>
 </div>
 <script src="/assets/common.js?v=20260909a"></script>
-<script src="/assets/wallet.js?v=20260908t"></script>
+<script src="/assets/wallet.js?v=20260909a"></script>
 <script src="/assets/promo.js?v=20260909b"></script>
 <script src="/assets/my.js?v=20260909e"></script>
 <script src="/assets/chat.js?v=20260907l"></script>