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.

src/app/bootstrap.js

@@ -0,0 +1,91 @@
+import Alpine from 'alpinejs';
+
+import { logout, restoreSession, verifyConnection } from '../api/auth.js';
+import { listKitchens } from '../api/kitchens.js';
+import { APP_NAME } from './config.js';
+import { createRouter, navigate } from './router.js';
+import { createAppStore } from './store.js';
+import { appShell } from '../components/app-shell.js';
+import { registerFeatureData } from '../features/register.js';
+
+async function installServiceWorker() {
+  if ('serviceWorker' in navigator) {
+    await navigator.serviceWorker.register('/service-worker.js');
+  }
+}
+
+export function bootstrapApp() {
+  const store = createAppStore();
+  Alpine.store('app', store);
+
+  registerFeatureData(Alpine, store);
+
+  const appRoot = document.querySelector('#app');
+  appRoot.innerHTML = appShell(APP_NAME);
+  Alpine.initTree(appRoot);
+
+  const router = createRouter({
+    Alpine,
+    store,
+    outlet: document.querySelector('#route-view'),
+  });
+
+  window.__loncApp = {
+    navigate,
+    async refreshKitchens() {
+      const kitchens = await listKitchens(store);
+      store.setKitchens(kitchens);
+      if (!store.activeKitchen && kitchens.length) {
+        store.setActiveKitchen(kitchens[0]);
+      }
+      return kitchens;
+    },
+    async restoreSession() {
+      try {
+        await restoreSession(store);
+        if (store.isConnected) {
+          await window.__loncApp.refreshKitchens();
+        }
+      } catch (error) {
+        if (window.location.hash !== '#/login') {
+          navigate('/login');
+        }
+      }
+    },
+    async verifyConnection() {
+      await verifyConnection(store);
+      if (store.isConnected) {
+        await window.__loncApp.refreshKitchens();
+      }
+      return store.session;
+    },
+    async logout() {
+      await logout(store);
+      navigate('/login');
+    },
+    router,
+  };
+
+  window.addEventListener('online', () => {
+    store.addAlert({ type: 'success', message: 'Connection restored.' });
+  });
+
+  window.addEventListener('offline', () => {
+    store.addAlert({
+      type: 'warning',
+      message: 'You are offline. Cached screens stay available, but API actions may fail.',
+    });
+  });
+
+  window.__loncApp
+    .restoreSession()
+    .finally(() => router.start())
+    .catch(() => router.start());
+
+  installServiceWorker().catch(() => {
+    store.addAlert({
+      type: 'warning',
+      message: 'PWA installation support could not be initialized.',
+    });
+  });
+}