Fix: copyAddress in WalletPage has no error handling — clipboard failures are silent

[henrypeters]

Category: Frontend - Bug
Priority: Low
Estimated Time: 30 minutes

Description:
app/(app)/wallet/page.tsx calls navigator.clipboard.writeText() in an async function without a try/catch. The Clipboard API throws in non-secure contexts and can be denied by browser permissions. A failed copy silently leaves copied as false with no user feedback, making the user believe the copy succeeded or failed with no explanation.

// app/(app)/wallet/page.tsx
async function copyAddress() {
  if (!wallet) return
  await navigator.clipboard.writeText(wallet.address)  // unhandled rejection
  setCopied(true)
  setTimeout(() => setCopied(false), 2000)
}

Tasks:

• Wrap the clipboard call in try/catch
• On failure, show a toast or an inline error: "Could not copy — please select and copy the address manually"
• Add a test mocking a clipboard permission denial