Collapse the blank runs the library global's move left behind

Moving each group of properties and callbacks out of AppWindow left
several two- and three-line gaps where a removed block's neighbours no
longer needed separating. No declarations changed.

ui/dr-ui/ui/app.slint

@@ -310,9 +310,6 @@ export component AppWindow inherits Window {
     in property <int> activity-kept: 0;
     callback activity-clear-finished();
 
-
-
-
     // The question a held collection asks: keep these on the device, or give
     // the disk back. Driven entirely from Rust — the counts and the byte sizes
     // in the labels are catalog reads, and an empty `title` is what closes it.
@@ -342,7 +339,6 @@ export component AppWindow inherits Window {
     callback recovery-rebuild();
     callback recovery-dismiss();
 
-
     // --- people and faces (FR-CULL-8 … FR-CULL-12) ---
     //
     // A third top-level screen rather than a panel: naming a cluster and
@@ -432,12 +428,6 @@ export component AppWindow inherits Window {
     /// press anywhere on it.
     callback collection-offline-menu(int);
 
-
-
-
-
-
-
     callback next-image();
     callback prev-image();
 
@@ -2061,7 +2051,6 @@ in property <bool> panel-visible: true;
                         }
                     }
 
-
                     // --- crop overlay ------------------------------------------
                     //
                     // Placed over the fitted image, so the fractions it draws are