T28: on Hyprland a window blurs only while Hyprland's own decoration:blur:enabled is on, which Omarchy 4.0.4 turns off; the PRD, README, AGENTS.md and release notes say so and how to turn it on, and acceptance records the blur Hyprland drew on the owner's Omarchy

PRD.md

@@ -111,7 +111,7 @@ Cmd-, opens it; on Windows and Linux, which have no menu bar, so does a gear in
 
 - macOS: gpui's `WindowBackgroundAppearance::Blurred` (NSVisualEffectView).
 - Windows: gpui's `Blurred` (acrylic accent).
-- Wayland: gpui's `Blurred` speaks `org_kde_kwin_blur`; ELYTerminal adds `ext_background_effect_v1` on the window's surface, which GNOME 51 and Plasma 6.7 support.
+- Wayland: gpui's `Blurred` speaks `org_kde_kwin_blur`; ELYTerminal adds `ext_background_effect_v1` on the window's surface, which GNOME 51, Plasma 6.7 and Hyprland support. Hyprland honors it only while its own blur is on, which Omarchy 4.0.4 turns off.
 - X11: ELYTerminal sets `_KDE_NET_WM_BLUR_BEHIND_REGION` (CARDINAL, 32) on the window, as Ghostty does; removes it when blur turns off.
 - A compositor with neither protocol shows transparency without blur. The app logs which path it took.