I was debugging a freight tracking agent at 11 pm in Abuja when the real problem announced itself. Not the bug I was chasing — a webhook timing issue between the Twilio handler and the Google Sheets state layer. The other problem. The one you don't see until you're deep enough in a system to count the dependencies. AWS. Twilio. OpenAI. Google. Pinecone. Every critical node in the architecture I'd just shipped — every piece that actually had to w…