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/exception/DOMException.d.ts

@@ -0,0 +1,16 @@
+/**
+ * DOM Exception.
+ *
+ * Reference:
+ * https://developer.mozilla.org/en-US/docs/Web/API/DOMException/DOMException.
+ */
+export default class DOMException extends Error {
+    /**
+     * Constructor.
+     *
+     * @param message Message.
+     * @param name Name.
+     */
+    constructor(message: string, name?: string);
+}
+//# sourceMappingURL=DOMException.d.ts.map

frontend/node_modules/happy-dom/lib/exception/DOMException.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"DOMException.d.ts","sourceRoot":"","sources":["../../src/exception/DOMException.ts"],"names":[],"mappings":"AAEA;;;;;GAKG;AACH,MAAM,CAAC,OAAO,OAAO,YAAa,SAAQ,KAAK;IAC9C;;;;;OAKG;gBACS,OAAO,EAAE,MAAM,EAAE,IAAI,GAAE,MAAa;CAKhD"}

frontend/node_modules/happy-dom/lib/exception/DOMException.js

@@ -0,0 +1,20 @@
+import DOMExceptionNameEnum from './DOMExceptionNameEnum.js';
+/**
+ * DOM Exception.
+ *
+ * Reference:
+ * https://developer.mozilla.org/en-US/docs/Web/API/DOMException/DOMException.
+ */
+export default class DOMException extends Error {
+    /**
+     * Constructor.
+     *
+     * @param message Message.
+     * @param name Name.
+     */
+    constructor(message, name = null) {
+        super(message);
+        this.name = name || DOMExceptionNameEnum.domException;
+    }
+}
+//# sourceMappingURL=DOMException.js.map

frontend/node_modules/happy-dom/lib/exception/DOMException.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"DOMException.js","sourceRoot":"","sources":["../../src/exception/DOMException.ts"],"names":[],"mappings":"AAAA,OAAO,oBAAoB,MAAM,2BAA2B,CAAC;AAE7D;;;;;GAKG;AACH,MAAM,CAAC,OAAO,OAAO,YAAa,SAAQ,KAAK;IAC9C;;;;;OAKG;IACH,YAAY,OAAe,EAAE,OAAe,IAAI;QAC/C,KAAK,CAAC,OAAO,CAAC,CAAC;QAEf,IAAI,CAAC,IAAI,GAAG,IAAI,IAAI,oBAAoB,CAAC,YAAY,CAAC;IACvD,CAAC;CACD"}

frontend/node_modules/happy-dom/lib/exception/DOMExceptionNameEnum.d.ts

@@ -0,0 +1,24 @@
+declare enum DOMExceptionNameEnum {
+    invalidStateError = "InvalidStateError",
+    indexSizeError = "IndexSizeError",
+    syntaxError = "SyntaxError",
+    hierarchyRequestError = "HierarchyRequestError",
+    notSupportedError = "NotSupportedError",
+    wrongDocumentError = "WrongDocumentError",
+    invalidNodeTypeError = "InvalidNodeTypeError",
+    invalidCharacterError = "InvalidCharacterError",
+    notFoundError = "NotFoundError",
+    securityError = "SecurityError",
+    networkError = "NetworkError",
+    domException = "DOMException",
+    invalidAccessError = "InvalidAccessError",
+    unknownError = "UnknownError",
+    abortError = "AbortError",
+    timeoutError = "TimeoutError",
+    encodingError = "EncodingError",
+    uriMismatchError = "URIMismatchError",
+    inUseAttributeError = "InUseAttributeError",
+    namespaceError = "NamespaceError"
+}
+export default DOMExceptionNameEnum;
+//# sourceMappingURL=DOMExceptionNameEnum.d.ts.map

frontend/node_modules/happy-dom/lib/exception/DOMExceptionNameEnum.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"DOMExceptionNameEnum.d.ts","sourceRoot":"","sources":["../../src/exception/DOMExceptionNameEnum.ts"],"names":[],"mappings":"AAAA,aAAK,oBAAoB;IACxB,iBAAiB,sBAAsB;IACvC,cAAc,mBAAmB;IACjC,WAAW,gBAAgB;IAC3B,qBAAqB,0BAA0B;IAC/C,iBAAiB,sBAAsB;IACvC,kBAAkB,uBAAuB;IACzC,oBAAoB,yBAAyB;IAC7C,qBAAqB,0BAA0B;IAC/C,aAAa,kBAAkB;IAC/B,aAAa,kBAAkB;IAC/B,YAAY,iBAAiB;IAC7B,YAAY,iBAAiB;IAC7B,kBAAkB,uBAAuB;IACzC,YAAY,iBAAiB;IAC7B,UAAU,eAAe;IACzB,YAAY,iBAAiB;IAC7B,aAAa,kBAAkB;IAC/B,gBAAgB,qBAAqB;IACrC,mBAAmB,wBAAwB;IAC3C,cAAc,mBAAmB;CACjC;AACD,eAAe,oBAAoB,CAAC"}

frontend/node_modules/happy-dom/lib/exception/DOMExceptionNameEnum.js

@@ -0,0 +1,25 @@
+var DOMExceptionNameEnum;
+(function (DOMExceptionNameEnum) {
+    DOMExceptionNameEnum["invalidStateError"] = "InvalidStateError";
+    DOMExceptionNameEnum["indexSizeError"] = "IndexSizeError";
+    DOMExceptionNameEnum["syntaxError"] = "SyntaxError";
+    DOMExceptionNameEnum["hierarchyRequestError"] = "HierarchyRequestError";
+    DOMExceptionNameEnum["notSupportedError"] = "NotSupportedError";
+    DOMExceptionNameEnum["wrongDocumentError"] = "WrongDocumentError";
+    DOMExceptionNameEnum["invalidNodeTypeError"] = "InvalidNodeTypeError";
+    DOMExceptionNameEnum["invalidCharacterError"] = "InvalidCharacterError";
+    DOMExceptionNameEnum["notFoundError"] = "NotFoundError";
+    DOMExceptionNameEnum["securityError"] = "SecurityError";
+    DOMExceptionNameEnum["networkError"] = "NetworkError";
+    DOMExceptionNameEnum["domException"] = "DOMException";
+    DOMExceptionNameEnum["invalidAccessError"] = "InvalidAccessError";
+    DOMExceptionNameEnum["unknownError"] = "UnknownError";
+    DOMExceptionNameEnum["abortError"] = "AbortError";
+    DOMExceptionNameEnum["timeoutError"] = "TimeoutError";
+    DOMExceptionNameEnum["encodingError"] = "EncodingError";
+    DOMExceptionNameEnum["uriMismatchError"] = "URIMismatchError";
+    DOMExceptionNameEnum["inUseAttributeError"] = "InUseAttributeError";
+    DOMExceptionNameEnum["namespaceError"] = "NamespaceError";
+})(DOMExceptionNameEnum || (DOMExceptionNameEnum = {}));
+export default DOMExceptionNameEnum;
+//# sourceMappingURL=DOMExceptionNameEnum.js.map

frontend/node_modules/happy-dom/lib/exception/DOMExceptionNameEnum.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"DOMExceptionNameEnum.js","sourceRoot":"","sources":["../../src/exception/DOMExceptionNameEnum.ts"],"names":[],"mappings":"AAAA,IAAK,oBAqBJ;AArBD,WAAK,oBAAoB;IACxB,+DAAuC,CAAA;IACvC,yDAAiC,CAAA;IACjC,mDAA2B,CAAA;IAC3B,uEAA+C,CAAA;IAC/C,+DAAuC,CAAA;IACvC,iEAAyC,CAAA;IACzC,qEAA6C,CAAA;IAC7C,uEAA+C,CAAA;IAC/C,uDAA+B,CAAA;IAC/B,uDAA+B,CAAA;IAC/B,qDAA6B,CAAA;IAC7B,qDAA6B,CAAA;IAC7B,iEAAyC,CAAA;IACzC,qDAA6B,CAAA;IAC7B,iDAAyB,CAAA;IACzB,qDAA6B,CAAA;IAC7B,uDAA+B,CAAA;IAC/B,6DAAqC,CAAA;IACrC,mEAA2C,CAAA;IAC3C,yDAAiC,CAAA;AAClC,CAAC,EArBI,oBAAoB,KAApB,oBAAoB,QAqBxB;AACD,eAAe,oBAAoB,CAAC"}