IDEAS, DECISIONS & LESSONS
Notes on AI, architecture and building useful products.
10 articles
26 Sep 2026 · 7 min read
agents
Copilot's local agent sandboxing hits public preview alongside an OpenTelemetry integration for tracing agent activity. What the sandbox boundary actually covers, what a useful agent-action span looks like, and why OTel is a start, not an answer.
Read more01 Sep 2026 · 6 min read
ai-agents
VS Code 1.135 shipped the Agent Host Protocol with an experimental /rubber-duck command — a second AI model critiquing your primary agent's plans and code in real time. Here's what it changes about how teams should structure AI-assisted review.
Read more01 Sep 2026 · 5 min read
ai-agents
Claude Sonnet 5's introductory pricing and GitHub Copilot Studio's promotional credits both expired on the same day. Here's the real math on what changed, why it happened simultaneously, and how to budget for the next one.
Read more30 Aug 2026 · 4 min read
ai-tools
GitHub's August 28 Visual Studio update adds Low/Medium/High thinking-effort controls per model, plus a model management view with context window and cost info. A Tech Lead's take on why per-call effort tuning matters more than picking 'the best model' — and how it compares to the reasoning-effort trap we already learned the hard way with open models.
Read more10 Aug 2026 · 5 min read
ai-agents
GitHub shipped git-worktree isolation for Copilot, Claude, and Codex agent sessions in VS Code on Aug 7, 2026, plus peer-chat forking and /side parallel sessions. Here's what actually changes for teams running multiple AI agents against the same repo.
Read more08 Jun 2026 · 5 min read
ai
At Build 2026, Microsoft announced MAI-Thinking-1 and MAI-Code-1-Flash — its first in-house foundation models built without OpenAI. The benchmarks are impressive, but the strategic shift is what developers should really pay attention to.
Read more14 Mar 2026 · 13 min read
ai-agent
The definitive guide to building AI Skills across Claude Code, GitHub Copilot, and Google Antigravity. Architecture deep-dive, SKILL.md standard, diagrams, practical examples, and best practices.
Read more02 Mar 2026 · 10 min read
ai-migration
Part 3 of 7 — The actual steps to migrate a .NET Framework 4.6 application to .NET 10 using AI. Includes project file conversion, API replacements, prompt patterns, token limit strategies, and the 80% coverage plan.
Read more24 Feb 2026 · 6 min read
ai-pair-programming
Part 6 of 12 — The developer's inner loop in the AI era: AI-assisted ticket analysis, code planning, pair programming, test writing, documentation, and self-review — plus the human judgment that makes AI-generated code safe to ship.
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