- Change file mode from 644 to 755 for all project files - Add chain_id parameter to get_balance RPC endpoint with default "ait-devnet" - Rename Miner.extra_meta_data to extra_metadata for consistency
chore: remove obsolete payment architecture and integration test documentation - Remove AITBC_PAYMENT_ARCHITECTURE.md (dual-currency system documentation) - Remove IMPLEMENTATION_COMPLETE_SUMMARY.md (integration test completion summary) - Remove INTEGRATION_TEST_FIXES.md (test fixes documentation) - Remove INTEGRATION_TEST_UPDATES.md (real features implementation notes) - Remove PAYMENT_INTEGRATION_COMPLETE.md (wallet-coordinator integration docs) - Remove WALLET_COORDINATOR_INTEGRATION.md (payment
