Cover the shell, capture, browsers, and networking in the manual

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>

manual/08-reminders.md

@@ -0,0 +1,5 @@
+# Reminders
+
+Omarchy has a built-in way to set simple reminders based on a countdown timer and with a message. You can do this via `Super + Ctrl + R`, seeing all the ones set via `Super + Ctrl + Alt + R`, and clearing all via `Super + Ctrl + Shift + R`. Everything also accessible via _Trigger > Reminder_. You can also use the cli with `omarchy reminder 7 'Tea ready'`.
+
+ ![screenrecording-2026-05-08_14-35-22-720p.gif](https://learn.omacom.io/u/screenrecording-2026-05-08_14-35-22-720p-3g9dVE.gif)