Writing

• How one engineer ships like a team5,700 commits across 11 repositories in under eight months, with AI agents doing most of the typing. The process that keeps it maintainable.
• A deploy that proves it deployedOur health check passed while production kept serving the old image. The fix is one field and one comparison.
• A prepaid ledger that can say noReplacing monthly invoicing with a prepaid balance: a signed append-only ledger and a booking gate that returns the exact shortfall.