fix: add @sveltejs/adapter-static dependency and configure adapter options in svelte.config.js

frontend/svelte.config.js

@@ -11,7 +11,15 @@ const config = {
 		// adapter-auto only supports some environments, see https://svelte.dev/docs/kit/adapter-auto for a list.
 		// If your environment is not supported, or you settled on a specific environment, switch out the adapter.
 		// See https://svelte.dev/docs/kit/adapters for more information about adapters.
-		adapter: adapter()
+		adapter: adapter({
+			// default options are shown. On some platforms
+			// these options are set automatically — see below
+			pages: 'build',
+			assets: 'build',
+			fallback: undefined,
+			precompress: false,
+			strict: true
+		})
 	}
 };