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/libphonenumber-js/.babelrc

@@ -0,0 +1,21 @@
+{
+	"presets": [
+		"@babel/env"
+	],
+	"plugins": [
+		["@babel/transform-for-of", { "loose": true }],
+		["@babel/plugin-syntax-import-assertions"]
+	],
+	"env": {
+		"es6": {
+			"presets": [
+				["@babel/env", { "modules": false }]
+			]
+		},
+		"nyc": {
+			"plugins": [
+				"babel-plugin-istanbul"
+			]
+		}
+	}
+}