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/nodes/svg-fe-spot-light-element/SVGFESpotLightElement.d.ts

@@ -0,0 +1,67 @@
+import SVGElement from '../svg-element/SVGElement.cjs';
+import * as PropertySymbol from '../../PropertySymbol.cjs';
+import SVGAnimatedNumber from '../../svg/SVGAnimatedNumber.cjs';
+/**
+ * SVGFESpotLightElement.
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/SVGFESpotLightElement
+ */
+export default class SVGFESpotLightElement extends SVGElement {
+    [PropertySymbol.x]: SVGAnimatedNumber | null;
+    [PropertySymbol.y]: SVGAnimatedNumber | null;
+    [PropertySymbol.z]: SVGAnimatedNumber | null;
+    [PropertySymbol.pointsAtX]: SVGAnimatedNumber | null;
+    [PropertySymbol.pointsAtY]: SVGAnimatedNumber | null;
+    [PropertySymbol.pointsAtZ]: SVGAnimatedNumber | null;
+    [PropertySymbol.specularExponent]: SVGAnimatedNumber | null;
+    [PropertySymbol.limitingConeAngle]: SVGAnimatedNumber | null;
+    /**
+     * Returns x.
+     *
+     * @returns X.
+     */
+    get x(): SVGAnimatedNumber;
+    /**
+     * Returns y.
+     *
+     * @returns Y.
+     */
+    get y(): SVGAnimatedNumber;
+    /**
+     * Returns z.
+     *
+     * @returns Z.
+     */
+    get z(): SVGAnimatedNumber;
+    /**
+     * Returns pointsAtX.
+     *
+     * @returns PointsAtX.
+     */
+    get pointsAtX(): SVGAnimatedNumber;
+    /**
+     * Returns pointsAtY.
+     *
+     * @returns PointsAtY.
+     */
+    get pointsAtY(): SVGAnimatedNumber;
+    /**
+     * Returns pointsAtZ.
+     *
+     * @returns PointsAtZ.
+     */
+    get pointsAtZ(): SVGAnimatedNumber;
+    /**
+     * Returns specularExponent.
+     *
+     * @returns SpecularExponent.
+     */
+    get specularExponent(): SVGAnimatedNumber;
+    /**
+     * Returns limitingConeAngle.
+     *
+     * @returns LimitingConeAngle.
+     */
+    get limitingConeAngle(): SVGAnimatedNumber;
+}
+//# sourceMappingURL=SVGFESpotLightElement.d.ts.map