Closest Storage Priority is a runtime optimization mod for logistic robots in Factorio 2.0.
Its goal is simple: when robots are delivering items to storage, they should prefer a closer valid storage chest instead of flying unnecessarily far across the network.

The mod works only on logistic robot storage behavior. It does not intentionally modify train logic, ship logic, or inserter-based loading and unloading behavior. To keep side effects low, it avoids changing visible chest filters and uses a lightweight tracked-robot runtime approach instead of constantly scanning the entire logistics system.

This makes the mod more focused, safer for mixed transport setups, and cheaper to run in larger factories.