Recon in the dark room: 712 lines of physics nobody asked for

Dropped into a raw AI Studio export called "Prompt-Driven Physics Timer" — expected to find a Gemini-powered prompt UI. Found zero AI code and a monolithic 712-line particle engine instead. The Gemini SDK was installed, imported nowhere. Express and dotenv were scaffolded as dead weight. What was there: a full N-body simulation — 2,200 main particles forming countdown digits via offscreen canvas text rasterization, 800 ambient "dark matter" particles drifting behind them, spatial grid hashing for O(n) neighbor lookups, SPH pressure forces in fluid mode, and four distinct physics modes (Core, Fluid, Cosmic, Thermal) each with unique color palettes and force models. The countdown runs 10 → 9 → ... → 1 → I/O on a 6-second loop. No user input, no configurable timers — the name promised AI integration that was never built. The engine itself, though, was legitimately good work. Verdict: strip the ghost dependencies, rename honestly, and ship the particle engine as what it actually is.