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/vitest/dist/chunks/coverage.d.S9RMNXIe.d.ts

@@ -0,0 +1,35 @@
+import { ModuleExecutionInfo } from 'vite-node/client';
+
+interface RuntimeCoverageModuleLoader {
+	executeId: (id: string) => Promise<{
+		default: RuntimeCoverageProviderModule
+	}>;
+	isBrowser?: boolean;
+	moduleExecutionInfo?: ModuleExecutionInfo;
+}
+interface RuntimeCoverageProviderModule {
+	/**
+	* Factory for creating a new coverage provider
+	*/
+	getProvider: () => any;
+	/**
+	* Executed before tests are run in the worker thread.
+	*/
+	startCoverage?: (runtimeOptions: {
+		isolate: boolean
+	}) => unknown | Promise<unknown>;
+	/**
+	* Executed on after each run in the worker thread. Possible to return a payload passed to the provider
+	*/
+	takeCoverage?: (runtimeOptions?: {
+		moduleExecutionInfo?: ModuleExecutionInfo
+	}) => unknown | Promise<unknown>;
+	/**
+	* Executed after all tests have been run in the worker thread.
+	*/
+	stopCoverage?: (runtimeOptions: {
+		isolate: boolean
+	}) => unknown | Promise<unknown>;
+}
+
+export type { RuntimeCoverageModuleLoader as R, RuntimeCoverageProviderModule as a };