v6 Phase A: Dashboard & Toolbar

- 'Dein Stack' zeigt echtes Modell (Dateiname) hinter coder/scout/vision.
- Top-News-Karte auf der Uebersicht (neben Stack).
- Toolbar-Update-Badges: /api/updates (OS via apt-Cache + Modell-Upgrades),
  klickbar -> Server bzw. News. compute_upgrades aus cookbook wiederverwendet.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

static/js/main.js

@@ -74,6 +74,24 @@ function showAlert(html, warn) {
 }
 function hideAlert() { $("#alert").style.display = "none"; }
 
+// ---- Toolbar: ausstehende Updates anzeigen ----
+const goView = v => document.querySelector(`.nav-item[data-view="${v}"]`)?.click();
+function badge(text, cls, view) {
+  const s = document.createElement("span");
+  s.className = "upd-badge" + (cls ? " " + cls : "");
+  s.textContent = text; s.onclick = () => goView(view);
+  return s;
+}
+async function pollUpdates() {
+  try {
+    const u = await api("/api/updates");
+    const el = $("#update-badges"); if (!el) return;
+    el.innerHTML = "";
+    if (u.os > 0) el.appendChild(badge(`${u.os} OS-Updates`, "warn", "server"));
+    if (u.models > 0) el.appendChild(badge(`${u.models} Modell-Upgrade${u.models > 1 ? "s" : ""}`, "", "news"));
+  } catch { /* still */ }
+}
+
 // ---- Polling ----
 async function pollStatus() {
   try { applyStatus(await api("/api/status")); }
@@ -141,3 +159,5 @@ connectSystemStream();
 setInterval(tickClock, 1000);
 setInterval(pollStatus, 3000);
 setInterval(pollJobs, 1500);
+pollUpdates();
+setInterval(pollUpdates, 60000);