Why does Kaspa's scripting language need 8-byte integer arithmetic?

KIP-10 adds support for 8-byte integer arithmetic operations to Kaspa's scripting language, allowing scripts to work with much larger numbers than were previously possible. Kaspa amounts and transaction values can grow large enough that standard 4-byte integers overflow, producing incorrect results; 8-byte integers can represent values up to roughly 9.2 quadrillion, which is sufficient for precise coin arithmetic. Without this upgrade, scripts that try to calculate fees, output values, or compare amounts would hit a hard ceiling and fail. For beginners, this means Kaspa scripts can now do reliable math on real transaction amounts, which is a prerequisite for the advanced conditions KIP-10 is designed to enable.