refactor: update database schema and fix chain_id handling across components

- Add new Transaction fields: nonce, value, fee, status, timestamp, tx_metadata
- Add block_metadata field to Block model
- Remove account_type and metadata fields from Account creation
- Simplify contract deployment transaction structure
- Fix chain_id hardcoding in PoA proposer and RPC router
- Update config to use /opt/aitbc/.env path with extra="ignore"
- Switch from starlette.broadcast to broadcaster module
- Update CLI

apps/blockchain-node/fix_accounts.py

@@ -0,0 +1,14 @@
+from aitbc_chain.database import session_scope, init_db
+from aitbc_chain.models import Account
+from datetime import datetime
+
+def fix():
+    init_db()
+    with session_scope() as session:
+        acc = Account(chain_id="ait-mainnet", address="aitbc1genesis", balance=10000000, nonce=0, updated_at=datetime.utcnow(), account_type="regular", metadata="{}")
+        session.merge(acc)
+        session.commit()
+        print("Added aitbc1genesis to mainnet")
+
+if __name__ == "__main__":
+    fix()