Auto-acquire Cashu tokens for NIP-46 bunker connections (v0.2.0)

- Add acquireTokenIfNeeded() in BunkerSigner to get CAT before connecting
- Check /cashu/info to detect CAT-enabled relays
- Request token via cashuTokenService with NIP-98 auth using ephemeral key
- Store and reuse tokens across sessions
- Pass token as query parameter on WebSocket connection

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/i18n/locales/pt-BR.ts

@@ -430,7 +430,6 @@ export default {
     'Write relays and {{count}} other relays': 'Relays de escrita e {{count}} outros relays',
     '{{count}} relays': '{{count}} relays',
     'Republishing...': 'Republicando...',
-    'Trending Notes': 'Notas em tendência',
     'Connected to': 'Conectado a',
     'Disconnect Wallet': 'Desconectar carteira',
     'Are you absolutely sure?': 'Você tem certeza absoluta?',