Keep Settings recovery isolated and display-safe

config/dot/quickshell/scripts/panama-settings-backup

@@ -577,17 +577,22 @@ def command_restore(arguments: list[str]) -> None:
     # restore followed by `hyprctl reload` must not bypass that safety boundary.
     # Preserve the currently confirmed generation when it is readable, and
     # otherwise remove the snapshot's geometry so startup uses shipped policy.
-    if desktop_present and desktop_data is not None:
+    try:
+        current_desktop = read_json(SETTINGS, "The current settings file") \
+            if is_present(SETTINGS) else {}
+    except BackupError:
+        current_desktop = {}
+
+    if isinstance(current_desktop, dict) and "displays" in current_desktop:
+        # Even a Home-only snapshot must retain the confirmed monitor layout.
+        # In that case the restored desktop file contains only the protected
+        # geometry; every ordinary desktop preference remains absent/default.
+        desktop_present = True
+        desktop_data = dict(desktop_data) if desktop_data is not None else {}
+        desktop_data["displays"] = current_desktop["displays"]
+    elif desktop_present and desktop_data is not None:
         desktop_data = dict(desktop_data)
-        try:
-            current_desktop = read_json(SETTINGS, "The current settings file") \
-                if is_present(SETTINGS) else {}
-        except BackupError:
-            current_desktop = {}
-        if "displays" in current_desktop:
-            desktop_data["displays"] = current_desktop["displays"]
-        else:
-            desktop_data.pop("displays", None)
+        desktop_data.pop("displays", None)
 
     # Restoring remains undoable, but a corrupt current file must not prevent a
     # known-good snapshot from recovering the desktop.