intro: The default app is intro, and complete intro changes the default app to ssb.

apps/intro/app.js

@@ -1,5 +1,13 @@
+import * as tfrpc from '/tfrpc.js';
+
 async function main() {
 	await app.setDocument(utf8Decode(getFile('index.html')));
 }
 
+tfrpc.register(async function complete() {
+	if ((await core.globalSettingsGet('index')) == '/~core/intro/') {
+		return await core.globalSettingsSet('index', '/~core/ssb/');
+	}
+});
+
 main();