feat(audit): address batch 1 of missing scripts and enable fwupd

- Move 18 Hyprland/desktop scripts from features/desktop/scripts/ to packaged directories
- Add nomarchy.hardware.fwupd option (default false) and enable service
- Implement nomarchy-update-firmware wrapper for fwupdmgr
- Add hyprland, swayosd, and fwupd to nomarchy-system-scripts dependencies
- Update docs/SCRIPTS.md with 'kept' status for ported scripts

features/scripts/utils/nomarchy-toggle-screensaver

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+
+# Toggles the screensaver availability.
+# Hybrid: updates state.json and runs env-update for persistence.
+
+STATE_DIR="$HOME/.config/nomarchy"
+STATE_FILE="$STATE_DIR/state.json"
+mkdir -p "$STATE_DIR"
+
+# Initialize if doesn't exist
+[[ ! -f $STATE_FILE ]] && echo "{}" > "$STATE_FILE"
+
+if [[ $NOMARCHY_TOGGLE_SCREENSAVER == "false" ]]; then
+    NEW_VALUE="true"
+    notify-send -u low "   Screensaver enabled"
+else
+    NEW_VALUE="false"
+    notify-send -u low "   Screensaver disabled"
+fi
+
+TMP_JSON=$(mktemp)
+jq --argjson val "$NEW_VALUE" '.screensaver = $val' "$STATE_FILE" > "$TMP_JSON" && mv "$TMP_JSON" "$STATE_FILE"
+
+echo "Screensaver state set to $NEW_VALUE. Updating environment..."
+
+nomarchy-env-update