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/fetch/data-uri/DataURIParser.cjs

@@ -0,0 +1,60 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+/**
+ * Data URI parser.
+ *
+ * Based on:
+ * https://github.com/TooTallNate/node-data-uri-to-buffer/blob/main/src/index.ts (MIT)
+ */
+class DataURIParser {
+    /**
+     * Returns a Buffer instance from the given data URI `uri`.
+     *
+     * @param uri Data URI.
+     * @returns Buffer.
+     */
+    static parse(uri) {
+        if (!/^data:/i.test(uri)) {
+            throw new TypeError('`uri` does not appear to be a Data URI (must begin with "data:")');
+        }
+        // Strip newlines
+        uri = uri.replace(/\r?\n/g, '');
+        // Split the URI up into the "metadata" and the "data" portions
+        const firstComma = uri.indexOf(',');
+        if (firstComma === -1 || firstComma <= 4) {
+            throw new TypeError('malformed data: URI');
+        }
+        // Remove the "data:" scheme and parse the metadata
+        const meta = uri.substring(5, firstComma).split(';');
+        let charset = '';
+        let base64 = false;
+        let type = meta[0] || 'text/plain';
+        for (let i = 1; i < meta.length; i++) {
+            if (meta[i] === 'base64') {
+                base64 = true;
+            }
+            else if (meta[i]) {
+                type += `;${meta[i]}`;
+                if (meta[i].indexOf('charset=') === 0) {
+                    charset = meta[i].substring(8);
+                }
+            }
+        }
+        // Defaults to US-ASCII only if type is not provided
+        if (!meta[0] && !charset.length) {
+            type += ';charset=US-ASCII';
+            charset = 'US-ASCII';
+        }
+        // Get the encoded data portion and decode URI-encoded chars
+        const encoding = base64 ? 'base64' : 'ascii';
+        const data = unescape(uri.substring(firstComma + 1));
+        const buffer = Buffer.from(data, encoding);
+        return {
+            type,
+            charset,
+            buffer
+        };
+    }
+}
+exports.default = DataURIParser;
+//# sourceMappingURL=DataURIParser.cjs.map

frontend/node_modules/happy-dom/cjs/fetch/data-uri/DataURIParser.cjs.map

@@ -0,0 +1 @@
+{"version":3,"file":"DataURIParser.cjs","sourceRoot":"","sources":["../../../src/fetch/data-uri/DataURIParser.ts"],"names":[],"mappings":";;AAAA;;;;;GAKG;AACH,MAAqB,aAAa;IACjC;;;;;OAKG;IACI,MAAM,CAAC,KAAK,CAAC,GAAW;QAK9B,IAAI,CAAC,SAAS,CAAC,IAAI,CAAC,GAAG,CAAC,EAAE,CAAC;YAC1B,MAAM,IAAI,SAAS,CAAC,kEAAkE,CAAC,CAAC;QACzF,CAAC;QAED,iBAAiB;QACjB,GAAG,GAAG,GAAG,CAAC,OAAO,CAAC,QAAQ,EAAE,EAAE,CAAC,CAAC;QAEhC,+DAA+D;QAC/D,MAAM,UAAU,GAAG,GAAG,CAAC,OAAO,CAAC,GAAG,CAAC,CAAC;QACpC,IAAI,UAAU,KAAK,CAAC,CAAC,IAAI,UAAU,IAAI,CAAC,EAAE,CAAC;YAC1C,MAAM,IAAI,SAAS,CAAC,qBAAqB,CAAC,CAAC;QAC5C,CAAC;QAED,mDAAmD;QACnD,MAAM,IAAI,GAAG,GAAG,CAAC,SAAS,CAAC,CAAC,EAAE,UAAU,CAAC,CAAC,KAAK,CAAC,GAAG,CAAC,CAAC;QACrD,IAAI,OAAO,GAAG,EAAE,CAAC;QACjB,IAAI,MAAM,GAAG,KAAK,CAAC;QACnB,IAAI,IAAI,GAAG,IAAI,CAAC,CAAC,CAAC,IAAI,YAAY,CAAC;QAEnC,KAAK,IAAI,CAAC,GAAG,CAAC,EAAE,CAAC,GAAG,IAAI,CAAC,MAAM,EAAE,CAAC,EAAE,EAAE,CAAC;YACtC,IAAI,IAAI,CAAC,CAAC,CAAC,KAAK,QAAQ,EAAE,CAAC;gBAC1B,MAAM,GAAG,IAAI,CAAC;YACf,CAAC;iBAAM,IAAI,IAAI,CAAC,CAAC,CAAC,EAAE,CAAC;gBACpB,IAAI,IAAI,IAAI,IAAI,CAAC,CAAC,CAAC,EAAE,CAAC;gBACtB,IAAI,IAAI,CAAC,CAAC,CAAC,CAAC,OAAO,CAAC,UAAU,CAAC,KAAK,CAAC,EAAE,CAAC;oBACvC,OAAO,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC,SAAS,CAAC,CAAC,CAAC,CAAC;gBAChC,CAAC;YACF,CAAC;QACF,CAAC;QAED,oDAAoD;QACpD,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,CAAC,OAAO,CAAC,MAAM,EAAE,CAAC;YACjC,IAAI,IAAI,mBAAmB,CAAC;YAC5B,OAAO,GAAG,UAAU,CAAC;QACtB,CAAC;QAED,4DAA4D;QAC5D,MAAM,QAAQ,GAAG,MAAM,CAAC,CAAC,CAAC,QAAQ,CAAC,CAAC,CAAC,OAAO,CAAC;QAC7C,MAAM,IAAI,GAAG,QAAQ,CAAC,GAAG,CAAC,SAAS,CAAC,UAAU,GAAG,CAAC,CAAC,CAAC,CAAC;QACrD,MAAM,MAAM,GAAG,MAAM,CAAC,IAAI,CAAC,IAAI,EAAE,QAAQ,CAAC,CAAC;QAE3C,OAAO;YACN,IAAI;YACJ,OAAO;YACP,MAAM;SACN,CAAC;IACH,CAAC;CACD;AA3DD,gCA2DC"}

frontend/node_modules/happy-dom/cjs/fetch/data-uri/DataURIParser.d.ts

@@ -0,0 +1,20 @@
+/**
+ * Data URI parser.
+ *
+ * Based on:
+ * https://github.com/TooTallNate/node-data-uri-to-buffer/blob/main/src/index.ts (MIT)
+ */
+export default class DataURIParser {
+    /**
+     * Returns a Buffer instance from the given data URI `uri`.
+     *
+     * @param uri Data URI.
+     * @returns Buffer.
+     */
+    static parse(uri: string): {
+        type: string;
+        charset: string;
+        buffer: Buffer;
+    };
+}
+//# sourceMappingURL=DataURIParser.d.ts.map

frontend/node_modules/happy-dom/cjs/fetch/data-uri/DataURIParser.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"DataURIParser.d.ts","sourceRoot":"","sources":["../../../src/fetch/data-uri/DataURIParser.ts"],"names":[],"mappings":"AAAA;;;;;GAKG;AACH,MAAM,CAAC,OAAO,OAAO,aAAa;IACjC;;;;;OAKG;WACW,KAAK,CAAC,GAAG,EAAE,MAAM,GAAG;QACjC,IAAI,EAAE,MAAM,CAAC;QACb,OAAO,EAAE,MAAM,CAAC;QAChB,MAAM,EAAE,MAAM,CAAC;KACf;CAgDD"}