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/features/shared/form-utils.js

@@ -0,0 +1,20 @@
+export function fieldError(errors, field) {
+  return errors[field] || '';
+}
+
+export function normalizeValidationError(error) {
+  if (error?.details && typeof error.details === 'object') {
+    return error.details;
+  }
+
+  return {};
+}
+
+export function debounce(callback, wait = 300) {
+  let timeoutId;
+
+  return (...args) => {
+    window.clearTimeout(timeoutId);
+    timeoutId = window.setTimeout(() => callback(...args), wait);
+  };
+}