Refactor: consistently use temporary files and mv (atomic operation)

.config/ags/scripts/color_generation/switchwall.sh

@@ -27,7 +27,7 @@ kill_existing_mpvpaper() {
 create_restore_script() {
 	local video_path=$1
 
-	cat > "$RESTORE_SCRIPT" << EOF
+	cat > "$RESTORE_SCRIPT.tmp" << EOF
 #!/bin/bash
 # Generated by switchwall.sh - Don't modify it by yourself.
 # Time: $(date)
@@ -40,6 +40,7 @@ for monitor in \$(hyprctl monitors -j | jq -r '.[] | .name'); do
 done
 EOF
 
+	mv "$RESTORE_SCRIPT.tmp" $RESTORE_SCRIPT
 	chmod +x "$RESTORE_SCRIPT"
 }