chore: add VITE_CLIENT_URI env variable

src/vite-env.d.ts

···
 /// <reference types="@atcute/bluemoji/lexicons" />
 
 interface ImportMetaEnv {
-	readonly VITE_DEV_SERVER_PORT: string;
+	readonly VITE_DEV_SERVER_PORT?: string;
+	readonly VITE_CLIENT_URI: string;
 	readonly VITE_OAUTH_CLIENT_ID: string;
 	readonly VITE_OAUTH_REDIRECT_URL: string;
 	readonly VITE_OAUTH_SCOPE: string;

vite.config.js

···
 				process.env.VITE_OAUTH_REDIRECT_URL = redirectUri;
 			}
 
+			process.env.VITE_CLIENT_URI = metadata.client_uri;
 			process.env.VITE_OAUTH_SCOPE = metadata.scope;
 		},
 	};