collinpreston/tradingTank — reverse-engineered prompt

Build me a simple C++ desktop app called Trading Tank. I want it to feel like a market trading simulator where a day trader or high frequency trader can test a strategy without risking real money.

The app should have a basic GUI where I can load or use sample market price data, run a pretend trading strategy, and then see what would have happened. Show the trades that were made, the account balance over time, profit and loss, win rate, and any simple performance stats that help me understand if the strategy worked.

Keep it practical and easy to use. I don’t need a real brokerage connection or live trading. This should be a simulator and analysis tool. If something is missing from the existing project, make reasonable choices and leave the code organized so it can be expanded later. Look up current docs online if you need to.