feat: Add mobile compatibility utilities and enhance UI templates

- Introduced mobile compatibility utilities in mobile_compatibility.js for better handling of file uploads and image previews on mobile devices.
- Created base.html as a foundational template with responsive design and mobile compatibility features.
- Developed login.html for user authentication with a password toggle feature.
- Added main.html for displaying license keys and HWIDs with options to generate new keys and upload backups.
- Implemented a test script (test.sh) for validating license information via API.
- Created verify.py for license key validation and management, including functions for loading, checking, and registering keys.
- Added version.txt to track the current version of the application.

Inventarsystem-Lizenz-Verwaltung/run.sh

@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+if [[ -n "${CONDA_DEFAULT_ENV:-}" ]] && command -v conda >/dev/null 2>&1; then
+	conda deactivate || true
+fi
+
+source .venv/bin/activate
+
+# Do not run apt here because third-party repos in dev containers can fail.
+# We only check and provide the install hint if patchelf is missing.
+if ! command -v patchelf >/dev/null 2>&1; then
+	echo "Error: patchelf is required for Nuitka standalone builds on Linux."
+	echo "Install with: sudo apt update && sudo apt install -y patchelf"
+	exit 1
+fi
+
+pip install -U nuitka ordered-set zstandard flask flask-jwt-extended cryptography pyotp qrcode
+python - <<'PY'
+from pathlib import Path
+import json
+
+root = Path.cwd()
+settings_path = root / "settings.json"
+version_file = root / "Code" / "version.txt"
+
+version = "0.1.0"
+if settings_path.is_file():
+		raw = settings_path.read_text(encoding="utf-8").strip()
+		if raw:
+				data = json.loads(raw)
+				if isinstance(data, dict):
+						version = str(data.get("version", version)).strip() or version
+				elif isinstance(data, list):
+						for item in data:
+								if isinstance(item, dict) and "version" in item:
+										version = str(item.get("version", version)).strip() or version
+										break
+
+version_file.write_text(f"{version}\n", encoding="utf-8")
+print(f"Prepared {version_file} with version: {version}")
+PY
+python -m nuitka --standalone --follow-imports --include-data-dir=Code/templates=templates --include-data-dir=Code/static=static --include-data-file=licenses.json=licenses.json --assume-yes-for-downloads --output-dir=Inventarsystem_Lizenz_Verwaltung --remove-output Code/main.py
+if [[ -x "./build/main.dist/main.bin" ]]; then
+	./build/main.dist/main.bin
+else
+	echo "Build step finished but executable not found at ./build/main.dist/main.bin"
+	exit 1
+fi