- Add CDC consumer to listen for UserWalletCreated events from mining-wallet-service
- Create trading accounts when user contribution wallets are created (lazy creation)
- Add WalletSystemAccountCreated handler for province/city system accounts
- Add seed script for core system accounts (HQ, operation, cost, pool)
- Keep auth.user.registered listener for V2 new user registration
This ensures trading accounts are created in sync with wallet accounts,
supporting both V2 new users and V1 migrated users.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
