Downloaded Is Not Selected: Managing Whisper and Qwen Models in a Native Voice App
How GPT Realtime Assistant separates model files, companion assets, runtime selection, and download progress instead of hiding them behind one offline switch.
Arte Soft Engineering
Engineering notes from Arte Soft EOOD: native Apple apps, local-first software, media pipelines, and practical architecture lessons.
Latest articles
A Mute Button Must Fail Closed: Recording App and Microphone Audio with ReplayKit
Inside Reel’s separate app-audio and microphone paths, local MP4 writer, and the failure case that must never record a muted source.
Incremental Dependency-Graph Recalculation for 184 Excel Formulas in a Browser Web Worker
How we keep large .xlsx workbooks responsive at 60fps in the browser by separating incremental precedent BFS from dynamic-array spill passes inside a dedicated Web Worker.
Mining 14,351 Chess Puzzles with Stockfish 18 (and the Illegal-FEN Trap in chess.js)
How we built an automated MultiPV puzzle-mining and verification pipeline with Stockfish 18—and caught an illegal-position edge case that chess.js accepts without warning.