Deploy from local to testnet to mainnet with verification and deterministic addresses.

Deploy to predictable addresses across multiple networks using CREATE2.

Deploy the same contracts across multiple networks with per-chain configuration.

Implement proxy patterns and verify storage layout compatibility.

Test against live chain state, impersonate accounts, and handle time-sensitive logic.

Write effective invariant tests with handler patterns and ghost variables.

Replay and debug failed mainnet transactions with trace analysis.

Profile gas usage and optimize with snapshots and the IR pipeline.

Understand and fix stack too deep errors with practical solutions.

Run Foundry in Docker for reproducible builds and CI environments.

Breaking changes and upgrade guidance for Foundry v1.0.