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Category: Development

AI, Development

Label-free concept drift detection for fraud models

Waiting for the F1-score to drop means the fraud already happened. A FIDI Z-score on the symbolic layer flagged drift a full window earlier across five seeds. The code is below, along with the covariate blind spot it will not catch.

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Core Updates, Development, E-commerce Development

WooCommerce 10.7 cuts HPOS queries, adds Fulfillment API

WooCommerce 10.7 is mostly a performance release: the /wc/v4/orders endpoint drops from 271 queries to 132 and checkout loses about 15% of its SQL. It also ships a Fulfillment API beta and moves the Fulfillments namespace, which breaks old use statements.

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AI, Development

How I build AI memory systems that know when to forget

Vector search on its own leaves an agent repeating things that stopped being true months ago. Here is the memory lifecycle I build instead: decay scores, contradiction detection, confidence values, compression, and a background worker that does the cleanup.

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Core Updates, Development

Why WordPress 7.0 closed trunk and froze its strings

Trunk is closed to 7.1 commits and WordPress 7.0 is under a hard string freeze while the core team stabilizes real-time collaboration. What that means for your workflow, plus the new custom sync provider API and where to help before the RC.

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Core Updates, Development

WordPress credits the logo, not the person who wrote the code

The WordPress ecosystem has drifted from crediting contributors to crediting their employers, from WordCamp badges to Five for the Future testimonials. My argument for putting people back first, and why pledged hours are the wrong thing to count.

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AI, Development

Why calendar-based MLOps retraining schedules keep failing

Production models rarely decay on a smooth curve. They hold steady and then lose a fifth of their recall in an afternoon. Here is the R-squared test that tells you which regime you are in, and the three triggers I use instead of a retraining calendar.

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Core Updates, Development

Complimentary subscriptions in Jetpack: how comping VIPs works

Jetpack now lets you comp a paid subscription from the Subscribers screen, so gifting access no longer means a custom VIP role and a pile of expiring metadata. Here is what changes, plus the math on Substack’s 10% cut.

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Development

Custom calendars in Power BI: the leap year drift in DAX

Power BI’s new custom calendars shift prior-year dates by a day across a leap year, because DATEADD works from the distance to the parent period. Stepping back 12 months instead of one year fixes it.

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AI, Development

Context engineering for AI agents: why bigger windows fail

Bigger context windows do not fix agent reasoning. Notes on context rot, compaction and folding, the harness that wraps the model, and why agents should pass distilled artifacts instead of raw traces.

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Development, Front-end

Alternatives to !important that keep the cascade intact

Cascade layers, the :is() pseudo-class and selector doubling all settle specificity conflicts without !important. Plus the few cases, like utility classes and accessibility overrides, where !important is still the right call.

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