Savings projector

Set a starting amount, a monthly contribution, and an expected return. This runs the same math as the app: a deterministic estimate, plus a Monte Carlo simulation that samples historical market returns instead of assuming a smooth line up and to the right.

USD only, for now. The historical return and inflation data behind this simulation is US-market data. Turkish inflation has run far above US inflation, so reusing these numbers for a TRY projection wouldn't just be imprecise — it would be systematically wrong in the opposite direction. We'd rather say so than mix the two.