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/cjs/url/URL.cjs

@@ -0,0 +1,62 @@
+"use strict";
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    var desc = Object.getOwnPropertyDescriptor(m, k);
+    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
+      desc = { enumerable: true, get: function() { return m[k]; } };
+    }
+    Object.defineProperty(o, k2, desc);
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+}));
+var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
+    Object.defineProperty(o, "default", { enumerable: true, value: v });
+}) : function(o, v) {
+    o["default"] = v;
+});
+var __importStar = (this && this.__importStar) || (function () {
+    var ownKeys = function(o) {
+        ownKeys = Object.getOwnPropertyNames || function (o) {
+            var ar = [];
+            for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
+            return ar;
+        };
+        return ownKeys(o);
+    };
+    return function (mod) {
+        if (mod && mod.__esModule) return mod;
+        var result = {};
+        if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
+        __setModuleDefault(result, mod);
+        return result;
+    };
+})();
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+const url_1 = require("url");
+const PropertySymbol = __importStar(require("../PropertySymbol.cjs"));
+const buffer_1 = require("buffer");
+const Blob_js_1 = __importDefault(require("../file/Blob.cjs"));
+/**
+ * URL.
+ */
+class URL extends url_1.URL {
+    /**
+     * Creates a string containing a URL representing the object given in the parameter.
+     *
+     * @param object Object.
+     * @returns URL.
+     */
+    static createObjectURL(object) {
+        if (object instanceof Blob_js_1.default) {
+            const blob = new buffer_1.Blob([object[PropertySymbol.buffer]], { type: object.type });
+            return super.createObjectURL(blob);
+        }
+        return super.createObjectURL(object);
+    }
+}
+exports.default = URL;
+//# sourceMappingURL=URL.cjs.map

frontend/node_modules/happy-dom/cjs/url/URL.cjs.map

@@ -0,0 +1 @@
+{"version":3,"file":"URL.cjs","sourceRoot":"","sources":["../../src/url/URL.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAAA,6BAAuC;AACvC,qEAAuD;AACvD,mCAA4C;AAC5C,8DAAmC;AAEnC;;GAEG;AACH,MAAqB,GAAI,SAAQ,SAAS;IACzC;;;;;OAKG;IACI,MAAM,CAAU,eAAe,CAAC,MAAyB;QAC/D,IAAI,MAAM,YAAY,iBAAI,EAAE,CAAC;YAC5B,MAAM,IAAI,GAAG,IAAI,aAAU,CAAC,CAAC,MAAM,CAAC,cAAc,CAAC,MAAM,CAAC,CAAC,EAAE,EAAE,IAAI,EAAE,MAAM,CAAC,IAAI,EAAE,CAAC,CAAC;YACpF,OAAO,KAAK,CAAC,eAAe,CAAC,IAAI,CAAC,CAAC;QACpC,CAAC;QACD,OAAO,KAAK,CAAC,eAAe,CAAC,MAAM,CAAC,CAAC;IACtC,CAAC;CACD;AAdD,sBAcC"}

frontend/node_modules/happy-dom/cjs/url/URL.d.ts

@@ -0,0 +1,16 @@
+import { URL as NodeJSURL } from 'url';
+import { Blob as NodeJSBlob } from 'buffer';
+import Blob from '../file/Blob.cjs';
+/**
+ * URL.
+ */
+export default class URL extends NodeJSURL {
+    /**
+     * Creates a string containing a URL representing the object given in the parameter.
+     *
+     * @param object Object.
+     * @returns URL.
+     */
+    static createObjectURL(object: NodeJSBlob | Blob): string;
+}
+//# sourceMappingURL=URL.d.ts.map

frontend/node_modules/happy-dom/cjs/url/URL.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"URL.d.ts","sourceRoot":"","sources":["../../src/url/URL.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,GAAG,IAAI,SAAS,EAAE,MAAM,KAAK,CAAC;AAEvC,OAAO,EAAE,IAAI,IAAI,UAAU,EAAE,MAAM,QAAQ,CAAC;AAC5C,OAAO,IAAI,MAAM,iBAAiB,CAAC;AAEnC;;GAEG;AACH,MAAM,CAAC,OAAO,OAAO,GAAI,SAAQ,SAAS;IACzC;;;;;OAKG;WACoB,eAAe,CAAC,MAAM,EAAE,UAAU,GAAG,IAAI,GAAG,MAAM;CAOzE"}