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/@vinejs/vine/build/factories/field.d.ts

@@ -0,0 +1,23 @@
+import { ErrorReporterContract } from '@vinejs/compiler/types';
+import type { FieldContext, MessagesProviderContact } from '../src/types.js';
+/**
+ * Exposes API to create a dummy field context
+ */
+export declare class FieldFactory {
+    create(fieldName: string, value: any, messagesProvider?: MessagesProviderContact, errorReporter?: ErrorReporterContract): {
+        value: any;
+        isArrayMember: false;
+        parent: any;
+        data: {
+            [fieldName]: any;
+        };
+        name: any;
+        wildCardPath: string;
+        getFieldPath(): string;
+        isDefined: boolean;
+        isValid: true;
+        meta: {};
+        mutate(newValue: any): FieldContext;
+        report(message: string, rule: string, context: FieldContext, args: Record<string, any> | undefined): void;
+    };
+}