test: Use -t=auto to generate some screenshots, detect -t=auto failure more reliably, exercise setting the initial profile, and fix various bugs that fell out.

apps/ssb/tf-tab-news.js

@@ -109,6 +109,7 @@ class TfTabNewsElement extends LitElement {
 	render() {
 		let profile = this.hash.startsWith('#@')
 			? html`<tf-profile
+					class="tf-profile"
 					id=${this.hash.substring(1)}
 					whoami=${this.whoami}
 					.users=${this.users}