Add chapters for the top bar and its panels, screenshots and recording,
toggles/idle/screensaver, browsers, shell plugins, and networking, which
collects the Wi-Fi, DNS, firewall, and Tailscale material that was spread
across the FAQ, TUIs, and services chapters.
Fill smaller gaps in the existing chapters: user hooks, autostart, menu
extensions, printing, power profiles, factory reset, drive and user
passwords, passwordless sudo, firmware updates, display text size, and
the LocalSend share menu.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
