Tech

Notes on addressing the Next.js/React 'React2Shell' vulnerability

A summary of how to verify impact and the mitigation steps for the CVSS 10.0 React2Shell vulnerability (CVE-2025-55182 / CVE-2025-66478), plus additional DoS and source code exposure issues.

RAG: Building an Internal Help Desk with Mac mini M4 Pro + Dify (2025, Part 1)

A plan to build an internal help desk RAG system using a Mac mini M4 Pro and Dify. Highlights what's new in Dify circa 2025 and tips for running local LLMs.

Setting Up LLM/RAG for Work, So I Tried LoRA Training on the Side (Part 1)

Introducing a Mac mini M4 Pro to build an in-house RAG system. A plan for setting up a LoRA training environment during downtime while waiting for specs to be finalized.

Japanese OCR on the Web in 2025: Limits and Lessons

From browser OCR and server-side OCR to cloud APIs and AI — a roundup of what I learned trying to implement Japanese OCR on the web, including the limits of each approach.

@paddlejs-models/ocr Doesn't Work in Browsers (as of 2025)

A record of my failed attempt to use PaddleOCR's JavaScript implementation in the browser.

The kuromoji.js path.join() Bug and How to Load Dictionary from CDN

Tried to implement morphological analysis in the browser — Sudachi was too heavy, kuromoji.js had a bug. Eventually solved it with a fork and a custom loader.

Every Date Was Wrong: Server, MySQL, PHP, and JavaScript All at Once

A story about dates going haywire in an AI-generated PHP script, plus a breakdown of timezone pitfalls in each layer — server, PHP, MySQL, and JavaScript.

The `nul` File Vite Generates on Windows and the Git Error It Causes

The cause of and workaround for a `nul` file being generated in the build output on Windows during Vite development, causing Git push errors.

WordPress Mail Not Delivered to the Same Domain — How I Fixed It

After migrating email to Google Workspace on Sakura Internet, Contact Form 7 stopped sending mail. Resolved using WP Mail SMTP.

Implementing External Image URL Validation with Fallback in a-blog cms

A custom Corrector option that checks multiple image URLs in order and falls back to a placeholder when none are accessible.

A Simple OGP Solution for SPAs and Dynamically Generated Pages

How I handled OGP crawler support for an HTML template + JavaScript site using PHP — a practical note on the approach.

Reviving an Old MacBook Pro (A1502) with Zorin OS 18

Installing the lightweight Linux distro Zorin OS 18 on a 2013–2015 MacBook Pro Retina and turning it into a practical daily machine.