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/effect/dist/dts/internal/metric/state.d.ts

@@ -0,0 +1,22 @@
+import type * as MetricState from "../../MetricState.js";
+/**
+ * @since 2.0.0
+ * @category refinements
+ */
+export declare const isFrequencyState: (u: unknown) => u is MetricState.MetricState.Frequency;
+/**
+ * @since 2.0.0
+ * @category refinements
+ */
+export declare const isGaugeState: (u: unknown) => u is MetricState.MetricState.Gauge<number | bigint>;
+/**
+ * @since 2.0.0
+ * @category refinements
+ */
+export declare const isHistogramState: (u: unknown) => u is MetricState.MetricState.Histogram;
+/**
+ * @since 2.0.0
+ * @category refinements
+ */
+export declare const isSummaryState: (u: unknown) => u is MetricState.MetricState.Summary;
+//# sourceMappingURL=state.d.ts.map