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/daisyui/components/fieldset/index.js

@@ -0,0 +1,7 @@
+import fieldset from './object.js';
+import { addPrefix } from '../../functions/addPrefix.js';
+
+export default ({ addComponents, prefix = '' }) => {
+  const prefixedfieldset = addPrefix(fieldset, prefix);
+  addComponents({ ...prefixedfieldset });
+};

frontend/node_modules/daisyui/components/fieldset/object.js

@@ -0,0 +1 @@
+export default {".fieldset":{"@layer daisyui.l1.l2.l3":{"display":"grid","gap":"calc(0.25rem * 1.5)","padding-block":"calc(0.25rem * 1)","font-size":"0.75rem","grid-template-columns":"1fr","grid-auto-rows":"max-content"}},".fieldset-legend":{"@layer daisyui.l1.l2.l3":{"margin-bottom":"calc(0.25rem * -1)","display":"flex","align-items":"center","justify-content":"space-between","gap":"calc(0.25rem * 2)","padding-block":"calc(0.25rem * 2)","color":"var(--color-base-content)","font-weight":600}},".fieldset-label":{"@layer daisyui.l1.l2.l3":{"display":"flex","align-items":"center","gap":"calc(0.25rem * 1.5)","color":"color-mix(in oklab, var(--color-base-content) 60%, transparent)","&:has(input)":{"cursor":"pointer"}}}};