What's your current Web3 dev stack for testing and debugging smart contracts?

I have been revisiting my setup lately and curious what others are using in 2026. Specifically around:

Local vs. forked environments (Hardhat, Foundry, Anvil, Tenderly Virtual TestNets?)

How you handle transaction debugging when things go wrong in prod

Anything you've tried and ditched, and why

"Also specifically curious if anyone's used Tenderly's Virtual TestNets or Simulation API in production — worth it or overkill for smaller teams?" Not looking for "X is the best" takes — more curious about what's actually working day-to-day and where you're still hitting friction.