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/event/events/PointerEvent.cjs

@@ -0,0 +1,52 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+const MouseEvent_js_1 = __importDefault(require("./MouseEvent.cjs"));
+/**
+ *
+ */
+class PointerEvent extends MouseEvent_js_1.default {
+    pointerId;
+    width;
+    height;
+    pressure;
+    tangentialPressure;
+    tiltX;
+    tiltY;
+    twist;
+    altitudeAngle;
+    azimuthAngle;
+    pointerType;
+    isPrimary;
+    coalescedEvents;
+    predictedEvents;
+    /**
+     * Constructor.
+     *
+     * @param type Event type.
+     * @param [eventInit] Event init.
+     */
+    constructor(type, eventInit = null) {
+        super(type, eventInit);
+        this.pointerId = eventInit?.pointerId ?? 0;
+        this.width = eventInit?.width ?? 1;
+        this.height = eventInit?.height ?? 1;
+        this.pressure = eventInit?.pressure ?? 0;
+        this.tangentialPressure = eventInit?.tangentialPressure ?? 0;
+        this.tiltX = eventInit?.tiltX ?? 0;
+        this.tiltY = eventInit?.tiltY ?? 0;
+        this.twist = eventInit?.twist ?? 0;
+        this.altitudeAngle = eventInit?.altitudeAngle ?? 0;
+        this.azimuthAngle = eventInit?.azimuthAngle ?? 0;
+        this.pointerType = eventInit?.pointerType ?? '';
+        this.isPrimary = eventInit?.isPrimary ?? false;
+        this.coalescedEvents = eventInit?.coalescedEvents ?? [];
+        this.predictedEvents = eventInit?.predictedEvents ?? [];
+    }
+    getCoalescedEvents = () => this.coalescedEvents;
+    getPredictedEvents = () => this.predictedEvents;
+}
+exports.default = PointerEvent;
+//# sourceMappingURL=PointerEvent.cjs.map