Adds build and packaging scripts for proper apps.

scripts/build-gui.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Nextcloud Upload Tool — Tauri GUI Packaging Helper Script
+# Builds production frontend and packages native desktop installer/bundles
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ROOT_DIR="$(cd "${SCRIPT_DIR}/.." && pwd)"
+GUI_DIR="${ROOT_DIR}/gui"
+
+echo "==> Building frontend assets..."
+cd "${GUI_DIR}"
+npm run build
+
+echo "==> Packaging native desktop bundle with Tauri..."
+npm run tauri build
+
+echo "✓ Native desktop bundle packaged in: ${GUI_DIR}/src-tauri/target/release/bundle/"