Introduce initial version of the Lonc app with core features, styling, and configurations.

- Add base app structure, including Bootstrap setup and Alpine.js integration.
- Implement authentication flow with session handling.
- Integrate stock management and label creation functionalities.
- Include responsive styling and theme using CSS variables and custom components.
- Add API clients for Tryton-based backend.
- Set up kitchen and dashboard navigation workflows.
- Configure service worker for PWA support.

public/manifest.webmanifest

@@ -0,0 +1,23 @@
+{
+  "name": "Lonc",
+  "short_name": "Lonc",
+  "description": "Kitchen stock labeling and stock management client for Tryton-backed household workflows.",
+  "start_url": "/#/",
+  "display": "standalone",
+  "background_color": "#f4f7fb",
+  "theme_color": "#1f4b99",
+  "icons": [
+    {
+      "src": "/icons/icon.svg",
+      "sizes": "any",
+      "type": "image/svg+xml",
+      "purpose": "any"
+    },
+    {
+      "src": "/icons/icon-mask.svg",
+      "sizes": "any",
+      "type": "image/svg+xml",
+      "purpose": "maskable"
+    }
+  ]
+}