snedea/flybrain ? reverse-engineered prompt

Build me a browser based interactive simulation of a fruit fly brain that runs in real time and feels alive, not scripted.

I want the page to load a huge connectome, around 139K neurons, and let the fly behavior emerge from the network itself. The user should be able to click to place food and watch the fly seek and eat it when hungry, touch different parts of the fly to trigger reactions, drag near it to blow wind, and cycle light and temperature conditions to see how it responds. Include a live visual display showing neurons firing in real time, grouped by broad regions like sensory, central, drives, and motor. Open it directly in the browser, keep it smooth enough to run in the client, and use the connectome data from the FlyWire adult Drosophila dataset. If you need current implementation details, look up the relevant docs online and match the existing data format.