The File Watcher That Looked Like a Permissions Problem
A sudo prompt, a macOS privacy dialog, and an EMFILE crash — three failures on a locked-down Mac that all look like missing admin rights. None of them is.
Tooling & AI
Claude Code workflows, AI-assisted development, and other developer tooling experiments.
You Can’t Eyeball a Geometry Library
Three libraries offered the same outline-offset operation. Two were secretly the same algorithm and one quietly drifted — and the only way to tell was a diff, because looking at the shapes told me nothing.