Echidna fuzzing template

Use Echidna

echidna test/fuzzing/Fuzz.sol --contract Fuzz --config echidna.yaml

Use Foundry

forge test --mp FoundryFuzz.sol

Use Foundry for repros

forge test --mp FoundryPlayground.sol -vvvv

Initial Cursor prompt with reference

@referenceContracts @fuzzing Using reference contracts, create handlers for SampleContract.complexFunction usage in FuzzSampleContract, appropriately filling in pre and post conditions.