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/autoprefixer/lib/hacks/inline-logical.js

@@ -0,0 +1,34 @@
+let Declaration = require('../declaration')
+
+class InlineLogical extends Declaration {
+  /**
+   * Return property name by spec
+   */
+  normalize(prop) {
+    return prop.replace(/(margin|padding|border)-(start|end)/, '$1-inline-$2')
+  }
+
+  /**
+   * Use old syntax for -moz- and -webkit-
+   */
+  prefixed(prop, prefix) {
+    return prefix + prop.replace('-inline', '')
+  }
+}
+
+InlineLogical.names = [
+  'border-inline-start',
+  'border-inline-end',
+  'margin-inline-start',
+  'margin-inline-end',
+  'padding-inline-start',
+  'padding-inline-end',
+  'border-start',
+  'border-end',
+  'margin-start',
+  'margin-end',
+  'padding-start',
+  'padding-end'
+]
+
+module.exports = InlineLogical