Fuzzwah's Agentic Coding Learnings

I ran openspec update --force on one of my projects last week and stood there for a moment watching the output tick by. Removed /opsx:new. Removed /opsx:ff. Removed /opsx:explore. Removed /opsx:apply. Removed /opsx:archive. Plus five deprecated ones that had been hanging around looking sorry for themselves. Then: created openspec-propose. Created openspec-apply-change. Created openspec-explore. Created openspec-archive-change.

Seven files out. Four files in. About three seconds.

That’s how tooling upgrades should work. And standing there thinking about why it worked that cleanly...
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If you’ve ever found yourself with six terminal tabs open — one running docker compose ps, another tailing logs, a third where you’re about to type docker compose restart webapp for the fourth time today — then you know the specific flavour of annoyance that led me to build this thing. I got properly sick of it. The constant tab-switching, the “wait, which terminal was I watching logs in?”, the moment you realise you restarted the wrong service because you were in the wrong tab. A world of pain.

So I built StackTUI, a TUI...
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I’ve been banging on about spec-driven development for a while now — from messy PRDs to Spec-Kit to OpenSpec. Each step got me closer to something that actually sticks. But the workflow I’ve landed on now? It’s honestly the first time I’ve felt like the whole process from “I reckon we need X” to “it’s built, documented, and supportable” is one smooth ride rather than a series of disconnected sprints.

So let me walk you through it.

The Starting Point: Plan Mode With Opus

If you’ve read my earlier posts you’ll know I’m a big fan...
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I wrote about switching from Spec-Kit to OpenSpec recently, and since then a few people have asked for the nuts and bolts of actually doing the migration. Fair enough — “I switched and it’s great” isn’t super helpful when you’re staring at a directory full of specs wondering where to start.

So here’s the practical guide I wish I’d had.

Why Bother Migrating at All

Before getting into the mechanics, it’s worth a quick aside on why the tooling layer around AI models matters so much right now. Can Bölük’s recent post on The Harness Problem nailed...
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So remember how a month ago I was all in on Spec-Kit? Converting messy PRDs into structured specs, cutting scope by 40%, eliminating ambiguity? I was properly hooked on spec-driven development. Genuinely changed how I think about requirements.

Yeah. About that.

The Spec-Kit Maintenance Problem

I’d been watching the Spec-Kit GitHub repository for updates — new features, bug fixes, community activity. What I found instead was silence. A community discussion captured what a lot of us were feeling: 22 pull requests sitting open with zero commits merged in an entire month.

The sole official response from...
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