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Category: Development

AI, Development

RAG chunk size is the variable most people never tune

Small chunks lose context, medium chunks produce near identical similarity scores, large chunks are stable but noisy. How RAG chunk size affects retrieval, plus a PHP splitter that respects word boundaries.

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Development

Playground Blueprints: theme demos that run in the browser

A Blueprint turns a bare Playground instance into a real theme demo. Here is the WXR export, the GitHub media swap and the blueprint.json steps that get you there.

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Design, Development

January 2026 wallpapers: a clean desktop to start the year

A new year is a decent excuse to refactor your desktop. Three picks from the January 2026 wallpaper collection, plus the CSS I use when an image like that becomes a hero background.

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AI, Development

Reinforcement learning for LLM reasoning: proofs over vibes

Part 2 of the vibe proving series: how an RL loop built around a hard proof checker teaches a model to follow logic rules, and where it still falls over on nested proofs.

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Development

Why transformed probabilities need a Jacobian adjustment

Square a random variable and the probability density stretches with it. Here is why naive substitution integrates to 2.0 instead of 1, and how the Jacobian factor puts it back.

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Development

You can pivot your tech career without starting over

Feeling stale in your role? A tech career pivot usually means reusing what you already know rather than deleting it. Four common moves, plus what three people who made the switch had to say about it.

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Core Updates, Development

Why WordPress Core may drop the PHP filter extension

The latest dev chat turned into an argument over whether WordPress Core should require PHP’s filter extension. PHPMailer uses it today. Here is what that costs you on hosts that compiled PHP without it.

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Design, Development

CSS container queries after size: scroll-state and style

Container queries began as a way to check a parent’s width. They now read scroll state, custom property values and anchor flips, which removes a lot of the JavaScript that used to handle sticky headers and tooltips.

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Core Updates, Development

Learning WordPress without burning out

The WordPress ecosystem ships faster than anyone can absorb it. After 14 years I scan most of it and go deep on very little. Here is how I set stopping points so that keeping up does not turn into burnout.

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AI, Development

Why I use GliNER2 for structured data extraction

A client had ten thousand messy biographical records that needed to become a clean knowledge graph. GPT-4o would have done it and cost a fortune, so I used GliNER2 instead: schema-driven extraction that runs on a CPU.

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