Feat: Allowed hosts configuration

Frontend/vite.config.ts

@@ -5,13 +5,25 @@ import { defineConfig } from "vite";
 
 import { solidStart } from "@solidjs/start/config";
 
+const extraAllowedHosts = (process.env.ALLOWED_HOSTS ?? "")
+	.split(",")
+	.map((host) => host.trim())
+	.filter(Boolean);
+
 export default defineConfig({
+	plugins: [solidStart(), nitro()],
+	server: {
+		allowedHosts: ["localhost", ...extraAllowedHosts],
+	},
+	preview: {
+		allowedHosts: ["localhost", ...extraAllowedHosts],
+	},
+
 	css: {
 		preprocessorOptions: {
 			scss: {
-				additionalData: `@use "/src/styles/tools/functions" as *;\n@use "/src/styles/tools/breakpoints" as *;\n@use "/src/styles/tools/mixins" as *;\n`,
+				additionalData: `@use "/src/styles/tools/breakpoints" as *;\n@use "/src/styles/tools/mixins" as *;\n`,
 			},
 		},
 	},
-	plugins: [solidStart(), nitro()],
 });