feat: show import-pending red lozenge when Sonarr/Radarr has issues

- Detect trackedDownloadState=importPending or status=warning/error
- Extract statusMessages and errorMessage from queue records
- Display red 'Import Pending' badge on download card header
- Hover reveals tooltip with the specific issue messages
- Visible to all users (not admin-only)

public/style.css

@@ -688,6 +688,38 @@ body {
   color: var(--text-muted);
 }
 
+/* ===== Import Issue Badge ===== */
+.import-issue-badge {
+  padding: 2px 8px;
+  border-radius: 10px;
+  font-size: 0.65rem;
+  font-weight: 600;
+  background: #ffebee;
+  color: #c62828;
+  cursor: help;
+  position: relative;
+  white-space: nowrap;
+}
+
+.import-issue-badge:hover::after {
+  content: attr(data-tooltip);
+  position: absolute;
+  top: calc(100% + 6px);
+  left: 0;
+  background: #424242;
+  color: #fff;
+  padding: 8px 12px;
+  border-radius: 6px;
+  font-size: 0.7rem;
+  font-weight: 400;
+  white-space: pre-line;
+  max-width: 320px;
+  z-index: 100;
+  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
+  line-height: 1.4;
+  pointer-events: none;
+}
+
 .download-user-badge {
   padding: 2px 8px;
   border-radius: 10px;