=== Trading Ledger Migration ===

Table crypto_market_trading_ledger already exists.

Current columns:
  - id (int)
  - login (varchar(100))
  - exchange (varchar(50))
  - transaction_type (enum('deposit','withdrawal','trade_open','trade_close','realized_pnl','fee','funding','liquidation','reset','adjustment'))
  - amount_usd (decimal(20,8))
  - balance_before (decimal(20,8))
  - balance_after (decimal(20,8))
  - reference_type (varchar(50))
  - reference_id (int)
  - symbol (varchar(50))
  - description (varchar(500))
  - metadata (json)
  - created_at (datetime)

Total records: 679

=== Migration Complete ===