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/happy-dom/lib/nodes/comment/Comment.d.ts

@@ -0,0 +1,27 @@
+import CharacterData from '../character-data/CharacterData.js';
+import * as PropertySymbol from '../../PropertySymbol.js';
+import NodeTypeEnum from '../node/NodeTypeEnum.js';
+/**
+ * Comment node.
+ */
+export default class Comment extends CharacterData {
+    [PropertySymbol.nodeType]: NodeTypeEnum;
+    cloneNode: (deep?: boolean) => Comment;
+    /**
+     * Node name.
+     *
+     * @returns Node name.
+     */
+    get nodeName(): string;
+    /**
+     * Converts to string.
+     *
+     * @returns String.
+     */
+    toString(): string;
+    /**
+     * @override
+     */
+    [PropertySymbol.cloneNode](deep?: boolean): Comment;
+}
+//# sourceMappingURL=Comment.d.ts.map

frontend/node_modules/happy-dom/lib/nodes/comment/Comment.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"Comment.d.ts","sourceRoot":"","sources":["../../../src/nodes/comment/Comment.ts"],"names":[],"mappings":"AAAA,OAAO,aAAa,MAAM,oCAAoC,CAAC;AAC/D,OAAO,KAAK,cAAc,MAAM,yBAAyB,CAAC;AAC1D,OAAO,YAAY,MAAM,yBAAyB,CAAC;AAEnD;;GAEG;AACH,MAAM,CAAC,OAAO,OAAO,OAAQ,SAAQ,aAAa;IAC1C,CAAC,cAAc,CAAC,QAAQ,CAAC,eAA4B;IAC7C,SAAS,EAAE,CAAC,IAAI,CAAC,EAAE,OAAO,KAAK,OAAO,CAAC;IAEtD;;;;OAIG;IACH,IAAW,QAAQ,IAAI,MAAM,CAE5B;IAED;;;;OAIG;IACI,QAAQ,IAAI,MAAM;IAIzB;;OAEG;IACa,CAAC,cAAc,CAAC,SAAS,CAAC,CAAC,IAAI,UAAQ,GAAG,OAAO;CAGjE"}

frontend/node_modules/happy-dom/lib/nodes/comment/Comment.js

@@ -0,0 +1,32 @@
+import CharacterData from '../character-data/CharacterData.js';
+import * as PropertySymbol from '../../PropertySymbol.js';
+import NodeTypeEnum from '../node/NodeTypeEnum.js';
+/**
+ * Comment node.
+ */
+export default class Comment extends CharacterData {
+    [PropertySymbol.nodeType] = NodeTypeEnum.commentNode;
+    /**
+     * Node name.
+     *
+     * @returns Node name.
+     */
+    get nodeName() {
+        return '#comment';
+    }
+    /**
+     * Converts to string.
+     *
+     * @returns String.
+     */
+    toString() {
+        return '[object Comment]';
+    }
+    /**
+     * @override
+     */
+    [PropertySymbol.cloneNode](deep = false) {
+        return super[PropertySymbol.cloneNode](deep);
+    }
+}
+//# sourceMappingURL=Comment.js.map

frontend/node_modules/happy-dom/lib/nodes/comment/Comment.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"Comment.js","sourceRoot":"","sources":["../../../src/nodes/comment/Comment.ts"],"names":[],"mappings":"AAAA,OAAO,aAAa,MAAM,oCAAoC,CAAC;AAC/D,OAAO,KAAK,cAAc,MAAM,yBAAyB,CAAC;AAC1D,OAAO,YAAY,MAAM,yBAAyB,CAAC;AAEnD;;GAEG;AACH,MAAM,CAAC,OAAO,OAAO,OAAQ,SAAQ,aAAa;IAC1C,CAAC,cAAc,CAAC,QAAQ,CAAC,GAAG,YAAY,CAAC,WAAW,CAAC;IAG5D;;;;OAIG;IACH,IAAW,QAAQ;QAClB,OAAO,UAAU,CAAC;IACnB,CAAC;IAED;;;;OAIG;IACI,QAAQ;QACd,OAAO,kBAAkB,CAAC;IAC3B,CAAC;IAED;;OAEG;IACa,CAAC,cAAc,CAAC,SAAS,CAAC,CAAC,IAAI,GAAG,KAAK;QACtD,OAAgB,KAAK,CAAC,cAAc,CAAC,SAAS,CAAC,CAAC,IAAI,CAAC,CAAC;IACvD,CAAC;CACD"}