When the user confirms a send on a locked encrypted lite wallet, show an unlock
modal (passphrase -> unlockWallet) instead of letting the backend reject it with
"Wallet is locked". After unlocking, the user re-confirms the send (the form is
preserved). Balances remain viewable while locked; only spending needs unlock.
- send_tab: the Confirm-and-send button routes to App::requestLiteUnlock() when
getWalletState().isLocked(), else sends as before.
- App::renderLiteUnlockPrompt(): centered modal, passphrase (Enter submits),
Unlock/Cancel; the passphrase buffer is sodium-zeroed after every path.
Full-node unaffected (gated on liteWallet()/isLocked()). Builds clean, launches
clean, tests pass.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
9e991a9c2f