Improve SQLite batching and diagnostics visibility

frontend/app/globals.css

@@ -6075,6 +6075,52 @@ textarea {
   background: rgba(255, 255, 255, 0.03);
 }
 
+.diagnostic-detail-panel {
+  display: grid;
+  gap: 0.9rem;
+}
+
+.diagnostic-detail-group {
+  display: grid;
+  gap: 0.6rem;
+}
+
+.diagnostic-detail-group h4 {
+  margin: 0;
+  font-size: 0.86rem;
+  letter-spacing: 0.06em;
+  text-transform: uppercase;
+  color: var(--ink-muted);
+}
+
+.diagnostic-detail-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
+  gap: 0.7rem;
+}
+
+.diagnostic-detail-item {
+  display: grid;
+  gap: 0.2rem;
+  min-width: 0;
+  padding: 0.75rem;
+  border-radius: 0.8rem;
+  border: 1px solid rgba(255, 255, 255, 0.06);
+  background: rgba(255, 255, 255, 0.025);
+}
+
+.diagnostic-detail-item span {
+  font-size: 0.76rem;
+  letter-spacing: 0.05em;
+  text-transform: uppercase;
+  color: var(--muted);
+}
+
+.diagnostic-detail-item strong {
+  line-height: 1.35;
+  overflow-wrap: anywhere;
+}
+
 .diagnostics-rail-metrics {
   display: grid;
   gap: 0.75rem;