Fixed race condition where message handlers could process requests
before cryptoWaitReady() and keyring.loadAll() completed.
Now all message handlers wait for initialization before processing,
which fixes the seed creation failure on first account creation.
- Update all copyright headers from 2025 to 2026
- Fix @polkadot references to @pezkuwi in config files
- Fix eslint.config.js import path
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>