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/zod/src/v3/tests/date.test.ts

@@ -0,0 +1,32 @@
+// @ts-ignore TS6133
+import { expect, test } from "vitest";
+
+import * as z from "zod/v3";
+
+const beforeBenchmarkDate = new Date(2022, 10, 4);
+const benchmarkDate = new Date(2022, 10, 5);
+const afterBenchmarkDate = new Date(2022, 10, 6);
+
+const minCheck = z.date().min(benchmarkDate);
+const maxCheck = z.date().max(benchmarkDate);
+
+test("passing validations", () => {
+  minCheck.parse(benchmarkDate);
+  minCheck.parse(afterBenchmarkDate);
+
+  maxCheck.parse(benchmarkDate);
+  maxCheck.parse(beforeBenchmarkDate);
+});
+
+test("failing validations", () => {
+  expect(() => minCheck.parse(beforeBenchmarkDate)).toThrow();
+  expect(() => maxCheck.parse(afterBenchmarkDate)).toThrow();
+});
+
+test("min max getters", () => {
+  expect(minCheck.minDate).toEqual(benchmarkDate);
+  expect(minCheck.min(afterBenchmarkDate).minDate).toEqual(afterBenchmarkDate);
+
+  expect(maxCheck.maxDate).toEqual(benchmarkDate);
+  expect(maxCheck.max(beforeBenchmarkDate).maxDate).toEqual(beforeBenchmarkDate);
+});