feat: Reinitialize frontend with SvelteKit and TypeScript

- Delete old Vite+Svelte frontend
- Initialize new SvelteKit project with TypeScript
- Configure Tailwind CSS v4 + DaisyUI
- Implement JWT authentication with auto-refresh
- Create login page with form validation (Zod)
- Add protected route guards
- Update Docker configuration for single-stage build
- Add E2E tests with Playwright (6/11 passing)
- Fix Svelte 5 reactivity with $state() runes

Known issues:
- 5 E2E tests failing (timing/async issues)
- Token refresh implementation needs debugging
- Validation error display timing

frontend/node_modules/dayjs/esm/plugin/minMax/index.js

@@ -0,0 +1,39 @@
+export default (function (o, c, d) {
+  var sortBy = function sortBy(method, dates) {
+    if (!dates || !dates.length || dates.length === 1 && !dates[0] || dates.length === 1 && Array.isArray(dates[0]) && !dates[0].length) {
+      return null;
+    }
+
+    if (dates.length === 1 && dates[0].length > 0) {
+      var _dates = dates;
+      dates = _dates[0];
+    }
+
+    dates = dates.filter(function (date) {
+      return date;
+    });
+    var result;
+    var _dates2 = dates;
+    result = _dates2[0];
+
+    for (var i = 1; i < dates.length; i += 1) {
+      if (!dates[i].isValid() || dates[i][method](result)) {
+        result = dates[i];
+      }
+    }
+
+    return result;
+  };
+
+  d.max = function () {
+    var args = [].slice.call(arguments, 0); // eslint-disable-line prefer-rest-params
+
+    return sortBy('isAfter', args);
+  };
+
+  d.min = function () {
+    var args = [].slice.call(arguments, 0); // eslint-disable-line prefer-rest-params
+
+    return sortBy('isBefore', args);
+  };
+});