Getting CPU usage, memory statistics, and disk space information on macOS for a monitoring dashboard, system tray app, or CLI tool. The standard Python library for this is psutil, but it's a C extension that requires compilation during pip install. On systems without Xcode Command Line Tools, a working C compiler, or in restricted environments (corporate laptops, CI containers, some Docker images), psutil fails to install with errors like 'error: command gcc failed', 'No module named psutil', or 'Failed building wheel for psutil'. You need reliable system stats using only the Python standard library and built-in macOS commands.

When building bookmark managers, link grids, speed-dial pages, dashboard link sections, or any UI that shows a collection of website links, you need icons for each site. Options: (1) Manually download and host icons — tedious, doesn't scale. (2) Use a big icon library like FontAwesome — doesn't have website-specific logos. (3) Use each site's /favicon.ico — unreliable, CORS blocked, inconsistent sizes, some sites use .png or .svg. (4) Use a favicon proxy service — the right answer. Without icons, link grids look bland and are hard to scan visually. Users rely heavily on favicon recognition for quick navigation.