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/fetch/cache/preflight/ICachablePreflightRequest.d.ts

@@ -0,0 +1,7 @@
+import Headers from '../../Headers.js';
+export default interface ICachablePreflightRequest {
+    url: string;
+    method: string;
+    headers: Headers;
+}
+//# sourceMappingURL=ICachablePreflightRequest.d.ts.map

frontend/node_modules/happy-dom/lib/fetch/cache/preflight/ICachablePreflightRequest.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"ICachablePreflightRequest.d.ts","sourceRoot":"","sources":["../../../../src/fetch/cache/preflight/ICachablePreflightRequest.ts"],"names":[],"mappings":"AAAA,OAAO,OAAO,MAAM,kBAAkB,CAAC;AAEvC,MAAM,CAAC,OAAO,WAAW,yBAAyB;IACjD,GAAG,EAAE,MAAM,CAAC;IACZ,MAAM,EAAE,MAAM,CAAC;IACf,OAAO,EAAE,OAAO,CAAC;CACjB"}

frontend/node_modules/happy-dom/lib/fetch/cache/preflight/ICachablePreflightRequest.js

@@ -0,0 +1,2 @@
+export {};
+//# sourceMappingURL=ICachablePreflightRequest.js.map

frontend/node_modules/happy-dom/lib/fetch/cache/preflight/ICachablePreflightRequest.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"ICachablePreflightRequest.js","sourceRoot":"","sources":["../../../../src/fetch/cache/preflight/ICachablePreflightRequest.ts"],"names":[],"mappings":""}

frontend/node_modules/happy-dom/lib/fetch/cache/preflight/ICachablePreflightResponse.d.ts

@@ -0,0 +1,7 @@
+import Headers from '../../Headers.js';
+export default interface ICachablePreflightResponse {
+    status: number;
+    url: string;
+    headers: Headers;
+}
+//# sourceMappingURL=ICachablePreflightResponse.d.ts.map

frontend/node_modules/happy-dom/lib/fetch/cache/preflight/ICachablePreflightResponse.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"ICachablePreflightResponse.d.ts","sourceRoot":"","sources":["../../../../src/fetch/cache/preflight/ICachablePreflightResponse.ts"],"names":[],"mappings":"AAAA,OAAO,OAAO,MAAM,kBAAkB,CAAC;AAEvC,MAAM,CAAC,OAAO,WAAW,0BAA0B;IAClD,MAAM,EAAE,MAAM,CAAC;IACf,GAAG,EAAE,MAAM,CAAC;IACZ,OAAO,EAAE,OAAO,CAAC;CACjB"}

frontend/node_modules/happy-dom/lib/fetch/cache/preflight/ICachablePreflightResponse.js

@@ -0,0 +1,2 @@
+export {};
+//# sourceMappingURL=ICachablePreflightResponse.js.map

frontend/node_modules/happy-dom/lib/fetch/cache/preflight/ICachablePreflightResponse.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"ICachablePreflightResponse.js","sourceRoot":"","sources":["../../../../src/fetch/cache/preflight/ICachablePreflightResponse.ts"],"names":[],"mappings":""}

frontend/node_modules/happy-dom/lib/fetch/cache/preflight/ICachedPreflightResponse.d.ts

@@ -0,0 +1,6 @@
+export default interface ICachedPreflightResponse {
+    allowOrigin: string;
+    allowMethods: string[];
+    expires: number;
+}
+//# sourceMappingURL=ICachedPreflightResponse.d.ts.map

frontend/node_modules/happy-dom/lib/fetch/cache/preflight/ICachedPreflightResponse.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"ICachedPreflightResponse.d.ts","sourceRoot":"","sources":["../../../../src/fetch/cache/preflight/ICachedPreflightResponse.ts"],"names":[],"mappings":"AAAA,MAAM,CAAC,OAAO,WAAW,wBAAwB;IAChD,WAAW,EAAE,MAAM,CAAC;IACpB,YAAY,EAAE,MAAM,EAAE,CAAC;IACvB,OAAO,EAAE,MAAM,CAAC;CAChB"}

frontend/node_modules/happy-dom/lib/fetch/cache/preflight/ICachedPreflightResponse.js

@@ -0,0 +1,2 @@
+export {};
+//# sourceMappingURL=ICachedPreflightResponse.js.map

frontend/node_modules/happy-dom/lib/fetch/cache/preflight/ICachedPreflightResponse.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"ICachedPreflightResponse.js","sourceRoot":"","sources":["../../../../src/fetch/cache/preflight/ICachedPreflightResponse.ts"],"names":[],"mappings":""}

frontend/node_modules/happy-dom/lib/fetch/cache/preflight/IPreflightResponseCache.d.ts

@@ -0,0 +1,28 @@
+import ICachedPreflightResponse from './ICachedPreflightResponse.js';
+import ICachablePreflightRequest from './ICachablePreflightRequest.js';
+import ICachablePreflightResponse from './ICachablePreflightResponse.js';
+/**
+ * Fetch response cache.
+ */
+export default interface IPreflightResponseCache {
+    /**
+     * Returns cached response.
+     *
+     * @param request Request.
+     * @returns Cached response.
+     */
+    get(request: ICachablePreflightRequest): ICachedPreflightResponse | null;
+    /**
+     * Adds a cached response.
+     *
+     * @param request Request.
+     * @param response Response.
+     * @returns Cached response.
+     */
+    add(request: ICachablePreflightRequest, response: ICachablePreflightResponse): ICachedPreflightResponse | null;
+    /**
+     * Clears the cache.
+     */
+    clear(): void;
+}
+//# sourceMappingURL=IPreflightResponseCache.d.ts.map

frontend/node_modules/happy-dom/lib/fetch/cache/preflight/IPreflightResponseCache.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"IPreflightResponseCache.d.ts","sourceRoot":"","sources":["../../../../src/fetch/cache/preflight/IPreflightResponseCache.ts"],"names":[],"mappings":"AAAA,OAAO,wBAAwB,MAAM,+BAA+B,CAAC;AACrE,OAAO,yBAAyB,MAAM,gCAAgC,CAAC;AACvE,OAAO,0BAA0B,MAAM,iCAAiC,CAAC;AAEzE;;GAEG;AACH,MAAM,CAAC,OAAO,WAAW,uBAAuB;IAC/C;;;;;OAKG;IACH,GAAG,CAAC,OAAO,EAAE,yBAAyB,GAAG,wBAAwB,GAAG,IAAI,CAAC;IAEzE;;;;;;OAMG;IACH,GAAG,CACF,OAAO,EAAE,yBAAyB,EAClC,QAAQ,EAAE,0BAA0B,GAClC,wBAAwB,GAAG,IAAI,CAAC;IAEnC;;OAEG;IACH,KAAK,IAAI,IAAI,CAAC;CACd"}

frontend/node_modules/happy-dom/lib/fetch/cache/preflight/IPreflightResponseCache.js

@@ -0,0 +1,2 @@
+export {};
+//# sourceMappingURL=IPreflightResponseCache.js.map

frontend/node_modules/happy-dom/lib/fetch/cache/preflight/IPreflightResponseCache.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"IPreflightResponseCache.js","sourceRoot":"","sources":["../../../../src/fetch/cache/preflight/IPreflightResponseCache.ts"],"names":[],"mappings":""}

frontend/node_modules/happy-dom/lib/fetch/cache/preflight/PreflightResponseCache.d.ts

@@ -0,0 +1,32 @@
+import IPreflightResponseCache from './IPreflightResponseCache.js';
+import ICachablePreflightRequest from './ICachablePreflightRequest.js';
+import ICachedPreflightResponse from './ICachedPreflightResponse.js';
+import ICachablePreflightResponse from './ICachablePreflightResponse.js';
+/**
+ * Fetch preflight response cache.
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Glossary/Preflight_request
+ */
+export default class PreflightResponseCache implements IPreflightResponseCache {
+    #private;
+    /**
+     * Returns cached response.
+     *
+     * @param request Request.
+     * @returns Cached response.
+     */
+    get(request: ICachablePreflightRequest): ICachedPreflightResponse | null;
+    /**
+     * Adds a cache entity.
+     *
+     * @param request Request.
+     * @param response Response.
+     * @returns Cached response.
+     */
+    add(request: ICachablePreflightRequest, response: ICachablePreflightResponse): ICachedPreflightResponse;
+    /**
+     * Clears the cache.
+     */
+    clear(): void;
+}
+//# sourceMappingURL=PreflightResponseCache.d.ts.map

frontend/node_modules/happy-dom/lib/fetch/cache/preflight/PreflightResponseCache.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"PreflightResponseCache.d.ts","sourceRoot":"","sources":["../../../../src/fetch/cache/preflight/PreflightResponseCache.ts"],"names":[],"mappings":"AAAA,OAAO,uBAAuB,MAAM,8BAA8B,CAAC;AACnE,OAAO,yBAAyB,MAAM,gCAAgC,CAAC;AACvE,OAAO,wBAAwB,MAAM,+BAA+B,CAAC;AACrE,OAAO,0BAA0B,MAAM,iCAAiC,CAAC;AAEzE;;;;GAIG;AACH,MAAM,CAAC,OAAO,OAAO,sBAAuB,YAAW,uBAAuB;;IAG7E;;;;;OAKG;IACI,GAAG,CAAC,OAAO,EAAE,yBAAyB,GAAG,wBAAwB,GAAG,IAAI;IAc/E;;;;;;OAMG;IACI,GAAG,CACT,OAAO,EAAE,yBAAyB,EAClC,QAAQ,EAAE,0BAA0B,GAClC,wBAAwB;IA4C3B;;OAEG;IACI,KAAK,IAAI,IAAI;CAGpB"}

frontend/node_modules/happy-dom/lib/fetch/cache/preflight/PreflightResponseCache.js

@@ -0,0 +1,72 @@
+/**
+ * Fetch preflight response cache.
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Glossary/Preflight_request
+ */
+export default class PreflightResponseCache {
+    #entries = {};
+    /**
+     * Returns cached response.
+     *
+     * @param request Request.
+     * @returns Cached response.
+     */
+    get(request) {
+        const cachedResponse = this.#entries[request.url];
+        if (cachedResponse) {
+            if (cachedResponse.expires < Date.now()) {
+                delete this.#entries[request.url];
+                return null;
+            }
+            return cachedResponse;
+        }
+        return null;
+    }
+    /**
+     * Adds a cache entity.
+     *
+     * @param request Request.
+     * @param response Response.
+     * @returns Cached response.
+     */
+    add(request, response) {
+        delete this.#entries[request.url];
+        if (request.headers.get('Cache-Control')?.includes('no-cache')) {
+            return null;
+        }
+        if (response.status < 200 || response.status >= 300) {
+            return null;
+        }
+        const maxAge = response.headers.get('Access-Control-Max-Age');
+        const allowOrigin = response.headers.get('Access-Control-Allow-Origin');
+        if (!maxAge || !allowOrigin) {
+            return null;
+        }
+        const allowMethods = [];
+        if (response.headers.has('Access-Control-Allow-Methods')) {
+            const allowMethodsHeader = response.headers.get('Access-Control-Allow-Methods');
+            if (allowMethodsHeader !== '*') {
+                for (const method of response.headers.get('Access-Control-Allow-Methods').split(',')) {
+                    allowMethods.push(method.trim().toUpperCase());
+                }
+            }
+        }
+        const cachedResponse = {
+            allowOrigin,
+            allowMethods,
+            expires: Date.now() + parseInt(maxAge) * 1000
+        };
+        if (isNaN(cachedResponse.expires) || cachedResponse.expires < Date.now()) {
+            return null;
+        }
+        this.#entries[request.url] = cachedResponse;
+        return cachedResponse;
+    }
+    /**
+     * Clears the cache.
+     */
+    clear() {
+        this.#entries = {};
+    }
+}
+//# sourceMappingURL=PreflightResponseCache.js.map

frontend/node_modules/happy-dom/lib/fetch/cache/preflight/PreflightResponseCache.js.map

@@ -0,0 +1 @@
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