Transaction Queue Builder

Builds a sequence of contract calls with reordering and removal, encodes each as you add it, and dry-runs the whole queue against current state before anything is sent. Arguments are coerced to their declared types before encoding, since a value left as a string produces calldata that looks correct and is not. It explains the result people mistake for a bug: a queue is normally ordered because one step enables the next, so an approve followed by a transferFrom will show the later step reverting during a dry run because the approve has not happened yet. Exports as plain JSON, Safe transaction-builder format with values converted to wei strings, or a runnable ethers script that awaits each step.