AI Illustrating a textbook with gpt-image-1
Environment: gpt-image-1 via the OpenAI images API, 1024×1024, quality: high, background: transparent. Node.js 20, Image...
yamako
AI 
AI Generating Kindle-ready Word files with docx-js
Environment: docx-js 9.6.1, Node.js 20, Python 3 for the post-pass. LibreOffice for verification. The files described he...
AI Playwright’s PDF export is 96 dpi, not 72
Environment: Playwright 1.62, bundled headless Chromium, Linux. The cover this came out of went to print in 2026.Last ti...
AI Typesetting a print-ready paperback with HTML and WeasyPrint
Environment: WeasyPrint (system Python 3, not the venv), CSS Paged Media, B5 trim. The interiors described here went to ...
AI Check the reading before you synthesise: a local Japanese TTS on WSL
Environment: AivisSpeech Engine 1.2.0, Linux x64 build, running inside WSL2 on Windows. Node.js 20, Python 3, ffmpeg. In...
AI OpenAI’s TTS silently drops the tail of long inputs
Environment: gpt-4o-mini-tts and whisper-1 via the OpenAI HTTP API, Node.js 20, ffmpeg. Measured July–August 2026.We pro...
AI The writer never grades its own work
Environment: Claude Code (Opus), Node.js 20. Two subagents defined as Markdown files with YAML front matter.Ask a model ...
AI Split the word list before you generate, not after
Environment: Node.js 20, Claude Code (Opus). The allocation script is 184 lines with no dependencies.A drill book has te...
AI Don’t let the model judge difficulty: a vocabulary allow-list, checked by machine
Environment: Node.js 20, Claude Code (Opus). The checks are plain ES modules in the same repository as the manuscripts —...
AI Four Claude Code subagents that write our exam-prep books
Environment: Claude Code (Opus), Node.js 20, macOS/WSL. Everything below runs from a single git repository.We publish En...