Notes from shipping AI features in production.

What actually breaks when LLM features hit real users: eval rigs, latency budgets, structured-output drift, and the integration work that doesn't fit on a slide.

SG-04 / PRODUCT ENGINEERING

Product Engineering

Pomodoro Count: A Tally for Focus That Happens Somewhere Else

Pomodoro Count is a native macOS menu bar app built around a small premise: the best focus timer may be physical, but the record of your work should still be useful.

Why I built Pomodoro Count, how its external-hardware-first workflow works, and a practical guide to logging sessions, using categories, running the timer, and reading your history.

July 20268 min read

Open Signal

SG-03 / GO AGENT SYSTEMS

Go Agent Systems

Building Agents in Go: Contracts, Tools, and Concurrency

Go becomes useful for agent systems when the hard part is operating a bounded runtime with contracts, cancellation, policy, and durable state.

Why Go becomes useful once agents need explicit contracts, cancellation-aware tools, approval gates, and concurrency that stays understandable in production.

April 202615 min read

Open Signal

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