F11 modal launcher-grid suppression
==================================

This small UX hardening change makes the F11 Hyprland/Shader control center a
true modal workspace:

- the launcher tile grid is hidden while the F11 overlay is visible
- the tile quick-search filter no longer receives SDL text input while F11 is open
- tile action badges and the tile filter overlay are suppressed while F11 is open
- the tile scrollbar is suppressed while F11 is open

Practical effect:
Typing into F11 inline text fields can no longer accidentally activate the tile
quick-search underneath the overlay.
