Polish: npm test runs every test file, two silent failures now log, Loading placeholders shimmer

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

public/chat-view.js

@@ -36,7 +36,7 @@ function chEvent(ev) {
 
 function viewChat(args = []) { const id = args[0] ? decodeURIComponent(args[0]) : null; ch.curSig = id && id.startsWith('sg:') ? id.slice(3) : null; ch.cur = ch.curSig ? null : id; if (!ch.curSig && typeof sg === 'object') sg.inChat = false; return chMount($('#view')); }
 async function chMount(root) {
-  ch.root = root; root.innerHTML = '<div class="wrap sgwrap"><h1>Chat</h1><p class="empty">Loading…</p></div>';
+  ch.root = root; root.innerHTML = '<div class="wrap sgwrap"><h1>Chat</h1><p class="empty loading" role="status">Loading…</p></div>';
   root.innerHTML = `<div class="wrap sgwrap"><div class="sg ${ch.cur || ch.curSig ? 'open' : ''}"><div class="sgl"><div class="sghead"><h1>Chat</h1><button class="ibtn" id="chset" aria-label="Chat settings">${icon('cog')}</button><button class="btn ghost" id="chnew">${icon('edit')}New</button></div>
     <input type="search" id="chq" placeholder="Search chats and messages" autocomplete="off"><div class="list sglist" id="chlist"></div></div><div class="sgm" id="chm"></div></div></div>`;
   chq('#chnew').onclick = chNewChat; chq('#chset').onclick = chSettings; let t; chq('#chq').oninput = () => { chDrawList(); clearTimeout(t); t = setTimeout(chSearchMessages, 350); };