feat(SearchOverlay): add scroll position restoration and mounted paths tracking

src/app/components/SearchOverlay.tsx

@@ -1,4 +1,4 @@
-import { useEffect, useMemo, useState } from 'react';
+import { useEffect, useMemo, useRef, useState } from 'react';
 import { flushSync } from 'react-dom';
 import { X, Search, Loader2, RefreshCw, FolderSearch, SlidersHorizontal, ArrowUp, ArrowDown, ArrowUpDown, HardDrive, FolderOpen } from 'lucide-react';
 import { motion, AnimatePresence } from 'motion/react';
@@ -138,6 +138,7 @@ const _store = {
   filterLanguage: null as string | null,
   sortField:      'name' as SortField,
   sortDir:        'asc'  as SortDir,
+  scrollTop:      0,
 };
 
 function FilterChips({
@@ -166,6 +167,7 @@ function FilterChips({
 }
 
 export default function SearchOverlay({ config, setConfig, onClose, onOpenFolder }: SearchOverlayProps) {
+  const scrollRef = useRef<HTMLDivElement>(null);
   const [query, setQuery] = useState(() => _store.query);
   const [isSearching, setIsSearching] = useState(false);
   const [isScanning, setIsScanning] = useState(false);
@@ -202,6 +204,26 @@ export default function SearchOverlay({ config, setConfig, onClose, onOpenFolder
     _store.sortDir        = sortDir;
   }, [query, results, hasSearched, showFilter, filterSystem, filterVideo, filterLanguage, sortField, sortDir]);
 
+  // Restore scroll position after results render.
+  useEffect(() => {
+    if (_store.scrollTop > 0 && scrollRef.current) {
+      scrollRef.current.scrollTop = _store.scrollTop;
+    }
+  }, []);
+
+  // Build a set of fully-resolved paths currently mounted on any IEC device.
+  const mountedPaths = useMemo(() => {
+    const paths = new Set<string>();
+    for (const d of Object.values(config?.devices?.iec ?? {})) {
+      const dev = d as any;
+      if (!dev?.url) continue;
+      const base = (dev.base_url ?? '').replace(/\/$/, '');
+      const url  = dev.url.startsWith('/') ? dev.url : '/' + dev.url;
+      paths.add(base ? base + url : dev.url);
+    }
+    return paths;
+  }, [config]);
+
   const handleSearch = async () => {
     if (!query.trim()) { toast.error('Please enter a search term'); return; }
     setIsSearching(true);
@@ -426,17 +448,14 @@ export default function SearchOverlay({ config, setConfig, onClose, onOpenFolder
               </div>
             </div>
 
-            {/* DB status chip */}
-            {dbPhase === 'ready' && !busy && (
-              <p className="text-xs text-green-600 mt-2 flex items-center gap-1">
-                <span className="w-1.5 h-1.5 rounded-full bg-green-500 inline-block" />
-                Database ready
-              </p>
-            )}
           </div>
 
           {/* Body */}
-          <div className="flex-1 overflow-y-auto">
+          <div
+            ref={scrollRef}
+            className="flex-1 overflow-y-auto"
+            onScroll={e => { _store.scrollTop = (e.currentTarget as HTMLDivElement).scrollTop; }}
+          >
             {/* Scanning progress */}
             {isScanning && scanPhase && (
               <div className="flex flex-col items-center justify-center py-16 gap-3">
@@ -477,6 +496,7 @@ export default function SearchOverlay({ config, setConfig, onClose, onOpenFolder
                           entry={resultToEntry(result)}
                           onPrimaryClick={() => setMountEntry(result)}
                           onActionsClick={e => { e.stopPropagation(); setActionEntry(result); }}
+                          selected={mountedPaths.has(result.path)}
                           nameSlot={
                             <>
                               <div className="flex items-center gap-1.5 flex-wrap">