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/fast-check/lib/esm/arbitrary/ipV4.js

@@ -0,0 +1,16 @@
+import { safeJoin, safeMap, safeSplit } from '../utils/globals.js';
+import { nat } from './nat.js';
+import { tuple } from './tuple.js';
+import { tryParseStringifiedNat } from './_internals/mappers/NatToStringifiedNat.js';
+function dotJoinerMapper(data) {
+    return safeJoin(data, '.');
+}
+function dotJoinerUnmapper(value) {
+    if (typeof value !== 'string') {
+        throw new Error('Invalid type');
+    }
+    return safeMap(safeSplit(value, '.'), (v) => tryParseStringifiedNat(v, 10));
+}
+export function ipV4() {
+    return tuple(nat(255), nat(255), nat(255), nat(255)).map(dotJoinerMapper, dotJoinerUnmapper);
+}