feat: persist station sync catalogs and status

src/styles.css

@@ -1585,6 +1585,61 @@ header {
     letter-spacing: 0.01em;
 }
 
+.catalog-sync-status {
+    display: inline-flex;
+    align-items: center;
+    gap: 8px;
+    margin-top: 8px;
+    width: fit-content;
+    padding: 6px 10px;
+    border: 1px solid rgba(var(--accent-rgb), 0.22);
+    border-radius: 999px;
+    background: linear-gradient(135deg, rgba(var(--accent-rgb), 0.16), rgba(var(--accent-3-rgb), 0.1));
+    color: var(--text-main);
+    font-size: 0.75rem;
+    font-weight: 800;
+    letter-spacing: 0.01em;
+    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.18);
+}
+
+.catalog-sync-status.is-warning {
+    border-color: rgba(255, 112, 135, 0.34);
+    background: linear-gradient(135deg, rgba(255, 112, 135, 0.18), rgba(255, 180, 92, 0.12));
+}
+
+.catalog-sync-status-time {
+    color: var(--text-muted);
+    font-weight: 700;
+}
+
+.catalog-sync-status-time:not(:empty)::before {
+    content: "·";
+    margin-right: 8px;
+    color: var(--text-soft);
+}
+
+.catalog-sync-status::before {
+    content: "";
+    width: 7px;
+    height: 7px;
+    border-radius: 50%;
+    background: var(--accent);
+    box-shadow: 0 0 10px rgba(var(--accent-rgb), 0.7);
+}
+
+.catalog-sync-status.is-warning::before {
+    background: var(--danger);
+    box-shadow: 0 0 10px rgba(255, 112, 135, 0.7);
+}
+
+.catalog-sync-history {
+    margin-top: 8px;
+    color: var(--text-soft);
+    font-size: 0.74rem;
+    font-weight: 700;
+    letter-spacing: 0.01em;
+}
+
 .status-dot {
     width: 8px;
     height: 8px;