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/prettier-plugin-tailwindcss/dist/licenses/prettier-plugin-style-order/README.md

@@ -0,0 +1,19 @@
+# Style Order for Prettier
+
+__Style Order__ is a [Prettier](https://prettier.io/) plugin which sorts property declarations and groups related properties.
+
+## Installation
+
+```bash
+npm i -D prettier-plugin-style-order
+```
+
+That's it! Prettier should automatically find/use the plugin.
+
+If it doesn't seem to be working, refer to Prettier's [plugin docs](https://prettier.io/docs/en/plugins.html) for more in-depth directions.
+
+## Credits
+
+- [`postcss-sorting`](https://github.com/hudochenkov/postcss-sorting)
+- [`stylelint-config-rational-order`](https://github.com/constverum/stylelint-config-rational-order)
+- [`prettier-plugin-package`](https://github.com/shellscape/prettier-plugin-package)