Talk and Walk

• We Built Ourselves an AI Coding Workbench — Using GitHub Actions as the Sandbox

  We built our team's AI coding workbench on GitHub Actions runners — not K8s, not a third-party sandbox service, not a managed agent. The design turns GHA's instability into a contract, keeps conversation continuity as the one hard guarantee, and uses OIDC so the sandbox repo holds zero secrets.

  May 8, 2026 - 14 minute read - AI-Assisted Development GitHub Actions Infrastructure Agent Engineering Practice
• "All Tests Pass" Doesn't Mean "Requirements Are Met" — Why AI-Assisted Development Is Often Suspiciously Green

  AI-assisted long tasks often end with all-green CI and shipped bugs. The problem isn't laziness — our engineering signals were never built to catch silent passes. Five forms of the "green but wrong" anti-pattern, five mechanisms behind it, and nine countermeasures that work at the system level.

  Apr 27, 2026 - 11 minute read - AI-Assisted Development Testing Software Engineering Anti-Pattern Engineering Practice
• Cost and Performance Optimization for Claude Code Skills: 6 Principles from a Real Session

  Token-level cost analysis from real Claude Code Skill sessions — six concrete, drop-in principles that cut per-session cost by 5×. Not generic AI cost-saving tips; these are specific to the Skill execution environment.

  Apr 17, 2026 - 10 minute read - claude-code skill cost-optimization llm-agent prompt-caching
• When Documentation Stops Rotting: From Karpathy's LLM Wiki to Software Engineering Documentation

  Documentation rots because maintenance is tedious drudgery for humans — and LLMs happen to be tireless at exactly that work. From Karpathy's LLM Wiki concept to a real open-source software engineering documentation system.

  Apr 9, 2026 - 7 minute read - LLM Documentation Software Engineering Karpathy Knowledge Management
• Frontend-Driven Development in the Vibe Coding Era

  AI tools have made frontend iteration dramatically cheaper — which flips the economics of how we build software. A real e-commerce case study on why "validate first, design later" now beats "design first, validate later."

  Mar 9, 2026 - 8 minute read - Vibe Coding Frontend Development Software Engineering AI-Assisted Development