In this episode: Standards vs. Chaos: ⚖️ Why exit 1 is bad practice and how system exit codes (SYSEXITS) save your CI/CD processes. 🚀 Friendly Exception: 💡 How to turn cryptic error dumps into helpful hints that save hours of debugging. 🛠️ Architecture: 🏗️ Why even a small script needs an application lifecycle and Startup/Shutdown events. 🔄 Quality Mark: ✅ What mutation testing (Infection) is and why Psalm is your strictest yet fairest proofreader. 🧐 Documentation: 📖 https://yiisoft.github.io/docs https://github.com/yiisoft/yii-console