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/happy-dom/cjs/dom/dom-matrix/IDOMMatrixJSON.d.ts

@@ -0,0 +1,27 @@
+export default interface IDOMMatrixJSON {
+    a: number;
+    b: number;
+    c: number;
+    d: number;
+    e: number;
+    f: number;
+    m11: number;
+    m12: number;
+    m13: number;
+    m14: number;
+    m21: number;
+    m22: number;
+    m23: number;
+    m24: number;
+    m31: number;
+    m32: number;
+    m33: number;
+    m34: number;
+    m41: number;
+    m42: number;
+    m43: number;
+    m44: number;
+    is2D: boolean;
+    isIdentity: boolean;
+}
+//# sourceMappingURL=IDOMMatrixJSON.d.ts.map