fix(hyprlua,hyprdrive): float/center the xdg-desktop-portal-hyprland share picker

Discord's screen-share source picker wasn't matching the modal-dialog
windowrules and tiled instead of floating. It's the Qt "hyprland-share-picker"
binary, which sets its app_id/class via
QCoreApplication::setApplicationName("org.hyprland.xdg-desktop-portal-hyprland")
— neither the GTK portal-dialog rule (different class) nor the title-based
dialog-float rule (title doesn't match) catches it. Added a dedicated rule
matching that class with the same float+center-on-monitor treatment.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

desktopenvs/hyprdrive/hypr/usr/windowrules.lua

@@ -103,6 +103,19 @@ hl.window_rule({
     move  = "(monitor_w/2 - window_w/2) (monitor_h/2 - window_h/2)",
 })
 
+-- screen-share source picker (xdg-desktop-portal-hyprland) — same treatment as
+-- the GTK portal dialog above. This is the Qt "hyprland-share-picker" binary
+-- that pops up asking which output/window to share (e.g. from Discord); it
+-- calls QCoreApplication::setApplicationName("org.hyprland.xdg-desktop-portal-hyprland"),
+-- which becomes its Wayland app_id/class. It's a parentless top-level like the
+-- GTK portal dialog, so it needs the same explicit float+center rule.
+hl.window_rule({
+    name  = "hyprland-share-picker",
+    match = { class = "org.hyprland.xdg-desktop-portal-hyprland" },
+    float = true,
+    move  = "(monitor_w/2 - window_w/2) (monitor_h/2 - window_h/2)",
+})
+
 -- dialogs — float any dialog-like window at its natural (minimum) size, centred on
 -- the cursor: renaming dialogs, generic Save/Open/Confirm/Delete/Move/Copy/Replace/
 -- Properties/Preferences dialogs, and Firefox "Opening <file>" download prompts.

desktopenvs/hyprlua/hypr/usr/windowrules.lua

@@ -104,6 +104,19 @@ hl.window_rule({
     move  = "(monitor_w/2 - window_w/2) (monitor_h/2 - window_h/2)",
 })
 
+-- screen-share source picker (xdg-desktop-portal-hyprland) — same treatment as
+-- the GTK portal dialog above. This is the Qt "hyprland-share-picker" binary
+-- that pops up asking which output/window to share (e.g. from Discord); it
+-- calls QCoreApplication::setApplicationName("org.hyprland.xdg-desktop-portal-hyprland"),
+-- which becomes its Wayland app_id/class. It's a parentless top-level like the
+-- GTK portal dialog, so it needs the same explicit float+center rule.
+hl.window_rule({
+    name  = "hyprland-share-picker",
+    match = { class = "org.hyprland.xdg-desktop-portal-hyprland" },
+    float = true,
+    move  = "(monitor_w/2 - window_w/2) (monitor_h/2 - window_h/2)",
+})
+
 -- dialogs — float any dialog-like window at its natural (minimum) size, centred on
 -- the cursor: renaming dialogs, generic Save/Open/Confirm/Delete/Move/Copy/Replace/
 -- Properties/Preferences dialogs, and Firefox "Opening <file>" download prompts.