✅ Quarantine flaky tests fast – don’t let them poison CI.
🔄 Check for leaked global state (variables, config, env).
🗄️ Clean your database between tests.
⏰ Look for time-dependent logic sneaking in.
🌐 Mock external dependencies – never trust the network.
♻️ Reset everything: globals, env, DB state.
📌 Freeze time for stable results.
🖥️ For browser tests: use robust selectors + consistent settings.
🎯 Limit retries (only where it makes sense).
⏳ Add timeouts + deadlock detection for stuck runs.
🛠️ Reliable design beats hacks – isolate and mock.
🚀 Stable tests = happier developers + faster debugging.

👉 Debug smarter, not harder.

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