refactor: improve accessibility and i18n for search components

• Replace label with ariaLabel prop
• Add searchPlaceholder support
• Use i18n keys for messages
• Improve aria-label attributes
• Standardize noResultsMessage fallback

lightrag_webui/src/components/graph/GraphLabels.tsx

@@ -185,9 +185,11 @@ const GraphLabels = () => {
         renderOption={(item) => <div style={{ whiteSpace: 'pre' }}>{item}</div>}
         getOptionValue={(item) => item}
         getDisplayValue={(item) => <div style={{ whiteSpace: 'pre' }}>{item}</div>}
-        notFound={<div className="py-6 text-center text-sm">No labels found</div>}
-        label={t('graphPanel.graphLabels.label')}
+        notFound={<div className="py-6 text-center text-sm">{t('graphPanel.graphLabels.noLabels')}</div>}
+        ariaLabel={t('graphPanel.graphLabels.label')}
         placeholder={t('graphPanel.graphLabels.placeholder')}
+        searchPlaceholder={t('graphPanel.graphLabels.placeholder')}
+        noResultsMessage={t('graphPanel.graphLabels.noLabels')}
         value={label !== null ? label : '*'}
         onChange={(newLabel) => {
           const currentLabel = useSettingsStore.getState().queryLabel;

lightrag_webui/src/components/graph/GraphSearch.tsx

@@ -215,8 +215,9 @@ export const GraphSearchInput = ({
       onFocus={(id) => {
         if (id !== messageId && onFocus) onFocus(id ? { id, type: 'nodes' } : null)
       }}
-      label={'item'}
+      ariaLabel={t('graphPanel.search.placeholder')}
       placeholder={t('graphPanel.search.placeholder')}
+      noResultsMessage={t('graphPanel.search.placeholder')}
     />
   )
 }

lightrag_webui/src/components/ui/AsyncSearch.tsx

@@ -41,8 +41,8 @@ export interface AsyncSearchProps<T> {
   onChange: (value: string) => void
   /** Callback when focus changes */
   onFocus: (value: string) => void
-  /** Label for the select field */
-  label: string
+  /** Accessibility label for the search field */
+  ariaLabel?: string
   /** Placeholder text when no selection */
   placeholder?: string
   /** Disable the entire select */
@@ -67,7 +67,7 @@ export function AsyncSearch<T>({
   getOptionValue,
   notFound,
   loadingSkeleton,
-  label,
+  ariaLabel,
   placeholder = 'Select...',
   value,
   onChange,
@@ -179,6 +179,7 @@ export function AsyncSearch<T>({
             placeholder={placeholder}
             value={searchTerm}
             className="max-h-8"
+            aria-label={ariaLabel}
             onFocus={handleFocus}
             onValueChange={(value) => {
               setSearchTerm(value)
@@ -198,7 +199,7 @@ export function AsyncSearch<T>({
             !error &&
             options.length === 0 &&
             (notFound || (
-              <CommandEmpty>{noResultsMessage ?? `No ${label.toLowerCase()} found.`}</CommandEmpty>
+              <CommandEmpty>{noResultsMessage || 'No results found.'}</CommandEmpty>
             ))}
           <CommandGroup>
             {options.map((option, idx) => (

lightrag_webui/src/components/ui/AsyncSelect.tsx

@@ -43,10 +43,12 @@ export interface AsyncSelectProps<T> {
   value: string
   /** Callback when selection changes */
   onChange: (value: string) => void
-  /** Label for the select field */
-  label: string
+  /** Accessibility label for the select field */
+  ariaLabel?: string
   /** Placeholder text when no selection */
   placeholder?: string
+  /** Display text for search placeholder */
+  searchPlaceholder?: string
   /** Disable the entire select */
   disabled?: boolean
   /** Custom width for the popover *
@@ -76,8 +78,9 @@ export function AsyncSelect<T>({
   getDisplayValue,
   notFound,
   loadingSkeleton,
-  label,
+  ariaLabel,
   placeholder = 'Select...',
+  searchPlaceholder,
   value,
   onChange,
   disabled = false,
@@ -200,6 +203,7 @@ export function AsyncSelect<T>({
           variant="outline"
           role="combobox"
           aria-expanded={open}
+          aria-label={ariaLabel}
           className={cn(
             'justify-between',
             disabled && 'cursor-not-allowed opacity-50',
@@ -223,7 +227,7 @@ export function AsyncSelect<T>({
         <Command shouldFilter={false}>
           <div className="relative w-full border-b">
             <CommandInput
-              placeholder={`Search ${label.toLowerCase()}...`}
+              placeholder={searchPlaceholder || 'Search...'}
               value={searchTerm}
               onValueChange={(value) => {
                 setSearchTerm(value)
@@ -244,7 +248,7 @@ export function AsyncSelect<T>({
               options.length === 0 &&
               (notFound || (
                 <CommandEmpty>
-                  {noResultsMessage ?? `No ${label.toLowerCase()} found.`}
+                  {noResultsMessage || 'No results found.'}
                 </CommandEmpty>
               ))}
             <CommandGroup>