Stop War Room A2A loops and unlock full chat history with dates.

Detect repeating topics and pause A2A, load older messages beyond the old ~120 cap, and show clear date/time stamps on every bubble.

cockpit/static/css/agents-warroom.css

@@ -662,3 +662,37 @@
   background: rgba(14, 40, 64, 0.98);
   border-color: rgba(56, 189, 248, 0.7);
 }
+
+
+.wr-history-bar {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 0.25rem;
+  padding: 0.45rem 0.35rem 0.65rem;
+  position: sticky;
+  top: 0;
+  z-index: 5;
+  background: linear-gradient(180deg, rgba(8,12,18,0.96), rgba(8,12,18,0.72) 70%, transparent);
+}
+.wr-time {
+  font-variant-numeric: tabular-nums;
+  white-space: nowrap;
+  opacity: 0.85;
+}
+.wr-day-sep {
+  display: flex;
+  justify-content: center;
+  margin: 0.75rem 0 0.5rem;
+}
+.wr-day-sep span {
+  font-size: 0.72rem;
+  font-weight: 600;
+  letter-spacing: 0.04em;
+  text-transform: uppercase;
+  padding: 0.2rem 0.65rem;
+  border-radius: 999px;
+  background: rgba(148, 163, 184, 0.12);
+  border: 1px solid rgba(148, 163, 184, 0.2);
+  opacity: 0.9;
+}