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/check/property/UnbiasedProperty.js

@@ -0,0 +1,25 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.UnbiasedProperty = void 0;
+class UnbiasedProperty {
+    constructor(property) {
+        this.property = property;
+        if (this.property.runBeforeEach !== undefined && this.property.runAfterEach !== undefined) {
+            this.runBeforeEach = () => this.property.runBeforeEach();
+            this.runAfterEach = () => this.property.runAfterEach();
+        }
+    }
+    isAsync() {
+        return this.property.isAsync();
+    }
+    generate(mrng, _runId) {
+        return this.property.generate(mrng, undefined);
+    }
+    shrink(value) {
+        return this.property.shrink(value);
+    }
+    run(v, dontRunHook) {
+        return this.property.run(v, dontRunHook);
+    }
+}
+exports.UnbiasedProperty = UnbiasedProperty;