Transformers from the inside out

If your agentic coding environment is a Formula One car then the engine is the Transformer. The coolest thing to me about transformers is that they can be broken down into their tiniest pieces and understood, the way an engine can be disassembled to its smallest parts. I wrote a step by step walkthrough of the re-assembly of a transformer starting from its tiniest bits. No machine learning background required. If you like looking under the hood, this is for you.