fix: make ledger app gate actually reliable

packages/chain-adapters/src/utils/ledgerAppGate.ts

@@ -102,17 +102,23 @@ export const verifyLedgerAppOpen = async (chainId: ChainId | KnownChainIds, wall
       const args: LedgerOpenAppEventArgs = { chainId, reject }
       emitter.emit('LedgerOpenApp', args)
 
-      // prompt user to open app on device
-      wallet.openApp(appName)
-
-      intervalId = setInterval(async () => {
-        if (!(await isAppOpen())) return
-
-        // emit event to trigger modal close
-        emitter.emit('LedgerAppOpened')
-        clearInterval(intervalId)
-        resolve()
-      }, 1000)
+      // start polling for app open status after openApp completes to avoid concurrent USB requests
+      const startPolling = () => {
+        intervalId = setInterval(async () => {
+          if (!(await isAppOpen())) return
+
+          // emit event to trigger modal close
+          emitter.emit('LedgerAppOpened')
+          clearInterval(intervalId)
+          resolve()
+        }, 1000)
+      }
+
+      // prompt user to open app on device, then start polling
+      // Promise.resolve normalizes both promise and non-promise return values
+      Promise.resolve(wallet.openApp(appName))
+        .then(() => startPolling())
+        .catch(() => startPolling())
     })
   } catch {
     clearInterval(intervalId)

src/context/AppProvider/AppContext.tsx

@@ -99,7 +99,12 @@ export const AppProvider = ({ children }: { children: React.ReactNode }) => {
       emitter.off('LedgerOpenApp', handleLedgerOpenApp)
       emitter.off('LedgerAppOpened', handleLedgerAppOpened)
     }
-  })
+    // Empty deps array intentional - event listeners are global via EventEmitter.
+    // They should register once on AppProvider mount and remain stable throughout app lifecycle.
+    // The handlers capture closeModal/openModal but these are stable functions from ModalProvider.
+    // Re-registering listeners on every render was causing the Ledger app gate flakiness (issue #11492).
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [])
 
   // track anonymous portfolio
   useMixpanelPortfolioTracking()