Add an on-screen keyboard to the lock screen for tablets and 2-in-1 devices

[lanwen]

Use case

On touchscreen devices with detachable keyboards, such as Microsoft Surface Pro,
Omarchy becomes impossible to unlock when the physical keyboard is detached.

Touch input works, but the Omarchy session lock screen has no on-screen keyboard.
A normal wvkbd window or Waybar button cannot help because ordinary application
surfaces are hidden while the secure session lock is active.

Steps to reproduce

1. Use Omarchy on a Surface Pro or another touchscreen 2-in-1.
2. Detach or fold away the physical keyboard.
3. Lock the session.
4. Tap the password field.

Current behavior

There is no way to type the password. The physical keyboard must be reattached to
unlock the device.

Requested behavior

Add a touch keyboard button beside the lock-screen password field. It should open
an embedded keyboard within the secure lock surface.

At minimum it needs:

• Letters and numbers
• Shift
• Backspace
• Enter
• A symbols view

Automatically showing it when tablet mode is detected would be helpful, but a
manual toggle would already solve the accessibility problem.

Implementation note

This should be embedded in Omarchy's lock-screen QML rather than launching an
external keyboard. The lock screen owns the secure WlSessionLockSurface, so an
embedded keyboard can remain visible and pass text to the existing password input
without weakening the lock.

Environment

• Device: Microsoft Surface Pro
• Omarchy: 4.0.1-1
• Hyprland: 0.56.2
• Kernel: linux-surface 6.19.8.arch1-3
• Session: Wayland

Related

• Add Virtual Keyboard Support at Login Screen #2889 covers the display-manager login screen, not the in-session lock screen.
• Hyprland issue fix: add delay between selection and capture to avoid cursor in screenshot #6195 discusses why an external on-screen keyboard cannot appear
  over a secure lock surface.