Add Stargil Nails logo and favicon

- Replace emoji icons with Stargil Nails logo in header and loading spinner
- Add favicon.png to public directory
- Copy logo to public/assets for browser access
- Update vite.config.ts to serve public directory
- Add favicon link to HTML head section

vite.config.ts

@@ -1,9 +1,9 @@
-import devServer, { defaultOptions } from "@hono/vite-dev-server";
-import react from "@vitejs/plugin-react";
-import tailwindcss from "@tailwindcss/vite";
-import tsconfigPaths from "vite-tsconfig-paths";
-import { defineConfig, loadEnv } from "vite";
-
+import devServer, { defaultOptions } from "@hono/vite-dev-server";
+import react from "@vitejs/plugin-react";
+import tailwindcss from "@tailwindcss/vite";
+import tsconfigPaths from "vite-tsconfig-paths";
+import { defineConfig, loadEnv } from "vite";
+
 export default defineConfig(({ mode }) => {
   if (process.env.QUESTS_INSIDE_STUDIO !== "true") {
     // When app is run outside Quests, this ensure .env* files are loaded
@@ -15,8 +15,12 @@ export default defineConfig(({ mode }) => {
     server: {
       host: "0.0.0.0",
       port: 5173,
+      // Erlaube Zugriffe von beliebigen Hosts (lokal + Proxy/Funnel)
       allowedHosts: "all",
+      cors: true,
+      // Keine explizite HMR/Origin-Konfiguration, Vite-Defaults für localhost funktionieren am stabilsten
     },
+    publicDir: "public",
     plugins: [
       tsconfigPaths(),
       react(),