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/stack/index.js

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

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

@@ -0,0 +1 @@
+export default {".stack":{"@layer daisyui.l1.l2.l3":{"display":"inline-grid","grid-template-columns":"3px 4px 1fr 4px 3px","grid-template-rows":"3px 4px 1fr 4px 3px","& > *":{"height":"100%","width":"100%","&:nth-child(n + 2)":{"width":"100%","opacity":"70%"},"&:nth-child(2)":{"z-index":2,"opacity":"90%"},"&:nth-child(1)":{"z-index":3,"width":"100%"}}},"@layer daisyui.l1.l2":{"&, &.stack-bottom":{"> *":{"grid-column":"3 / 4","grid-row":"3 / 6","&:nth-child(2)":{"grid-column":"2 / 5","grid-row":"2 / 5"},"&:nth-child(1)":{"grid-column":"1 / 6","grid-row":"1 / 4"}}},"&.stack-top":{"> *":{"grid-column":"3 / 4","grid-row":"1 / 4","&:nth-child(2)":{"grid-column":"2 / 5","grid-row":"2 / 5"},"&:nth-child(1)":{"grid-column":"1 / 6","grid-row":"3 / 6"}}},"&.stack-start":{"> *":{"grid-column":"1 / 4","grid-row":"3 / 4","&:nth-child(2)":{"grid-column":"2 / 5","grid-row":"2 / 5"},"&:nth-child(1)":{"grid-column":"3 / 6","grid-row":"1 / 6"}}},"&.stack-end":{"> *":{"grid-column":"3 / 6","grid-row":"3 / 4","&:nth-child(2)":{"grid-column":"2 / 5","grid-row":"2 / 5"},"&:nth-child(1)":{"grid-column":"1 / 4","grid-row":"1 / 6"}}}}}};