fix: resolve errors and css warnings

package-lock.json

@@ -21,6 +21,7 @@
 				"@sveltejs/adapter-static": "^3.0.10",
 				"@sveltejs/kit": "^2.50.1",
 				"@sveltejs/vite-plugin-svelte": "^6.2.4",
+				"@types/file-saver": "^2.0.7",
 				"@types/node": "^25.1.0",
 				"svelte": "^5.48.2",
 				"svelte-check": "^4.3.5",
@@ -1129,6 +1130,13 @@
 			"integrity": "sha512-dWHzHa2WqEXI/O1E9OjrocMTKJl2mSrEolh1Iomrv6U+JuNwaHXsXx9bLu5gG7BUWFIN0skIQJQ/L1rIex4X6w==",
 			"license": "MIT"
 		},
+		"node_modules/@types/file-saver": {
+			"version": "2.0.7",
+			"resolved": "https://registry.npmjs.org/@types/file-saver/-/file-saver-2.0.7.tgz",
+			"integrity": "sha512-dNKVfHd/jk0SkR/exKGj2ggkB45MAkzvWCaqLUUgkyjITkGNzH8H+yUwr+BLJUBjZOe9w8X3wgmXhZDRg1ED6A==",
+			"dev": true,
+			"license": "MIT"
+		},
 		"node_modules/@types/node": {
 			"version": "25.1.0",
 			"resolved": "https://registry.npmjs.org/@types/node/-/node-25.1.0.tgz",