refactor(client): move web search answer box into a details hover card

The inline answer card read as assistant prose sitting inside the
source list. The panel is back to sources only; an Info trigger at the
right edge of the row (hover-revealed like the chevron, focus-openable
for keyboard) opens a hover card with the search query, the source
count, and the provider answer box when present. WebSearch now
receives the tool call args to surface the query.

client/src/components/Chat/Messages/Content/WebSearch.tsx

@@ -1,7 +1,8 @@
 import { useMemo, useState, useEffect } from 'react';
 import { useRecoilValue } from 'recoil';
 import { Tools } from 'librechat-data-provider';
-import { Globe, ChevronDown } from 'lucide-react';
+import { Globe, ChevronDown, Info } from 'lucide-react';
+import { HoverCard, HoverCardTrigger, HoverCardPortal, HoverCardContent } from '@librechat/client';
 import type {
   TAttachment,
   ValidSource,
@@ -13,6 +14,7 @@ import { disclosureChevronClassName, toolPanelSpacingClassName } from './disclos
 import { FaviconImage, getCleanDomain } from '~/components/Web/SourceHovercard';
 import { useLocalize, useExpandCollapse, useLazyCollapseBody } from '~/hooks';
 import { StackedFavicons } from '~/components/Web/Sources';
+import parseJsonField from './Parts/parseJsonField';
 import { useToolCallIntent } from './Parts/intent';
 import { useSearchContext } from '~/Providers';
 import { ROW_GLYPH_SLOT } from './rows';
@@ -225,6 +227,7 @@ export default function WebSearch({
 
   const autoExpand = useRecoilValue(store.autoExpandTools);
   const sourceCount = allSources.length;
+  const [showDetails, setShowDetails] = useState(false);
   const [showSourceList, setShowSourceList] = useState(() => autoExpand && sourceCount > 0);
   const { style: sourceExpandStyle, ref: sourceExpandRef } = useExpandCollapse(showSourceList);
   const { shouldRenderBody, mountBody, handleTransitionEnd } = useLazyCollapseBody(showSourceList);
@@ -253,44 +256,104 @@ export default function WebSearch({
   if (complete) {
     const hasSourceData = sourceCount > 0;
     const completedText = intent ?? localize('com_ui_web_searched');
+    const query = parseJsonField(args, 'query');
+    const hasDetails = !!query || !!answerBox;
 
     return (
-      <div className="my-1">
+      <div className="group/websearch my-1">
         <span className="sr-only" aria-live="polite" aria-atomic="true">
           {completedText}
         </span>
-        <button
-          type="button"
-          className={cn(
-            'tool-status-text group/disclosure flex h-5 items-center gap-2 rounded-full',
-            hasSourceData
-              ? 'text-text-secondary focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-border-heavy'
-              : 'pointer-events-none text-text-secondary',
-          )}
-          disabled={!hasSourceData}
-          onClick={hasSourceData ? handleToggleSources : undefined}
-          aria-expanded={hasSourceData ? showSourceList : undefined}
-          aria-label={
-            hasSourceData
-              ? `${completedText} - ${localize(sourceCount === 1 ? 'com_ui_web_search_source' : 'com_ui_web_search_sources', { count: sourceCount })}`
-              : completedText
-          }
-        >
-          <span className={ROW_GLYPH_SLOT} aria-hidden="true">
+        <div className="relative flex h-5 items-center gap-1.5">
+          <button
+            type="button"
+            className={cn(
+              'tool-status-text group/disclosure flex h-5 min-w-0 items-center gap-2 rounded-full',
+              hasSourceData
+                ? 'text-text-secondary focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-border-heavy'
+                : 'pointer-events-none text-text-secondary',
+            )}
+            disabled={!hasSourceData}
+            onClick={hasSourceData ? handleToggleSources : undefined}
+            aria-expanded={hasSourceData ? showSourceList : undefined}
+            aria-label={
+              hasSourceData
+                ? `${completedText} - ${localize(sourceCount === 1 ? 'com_ui_web_search_source' : 'com_ui_web_search_sources', { count: sourceCount })}`
+                : completedText
+            }
+          >
             {hasSourceData ? (
               <SourceFaviconStack sources={allSources} />
             ) : (
-              <Globe className="size-4 shrink-0 text-text-secondary" />
+              <Globe className="size-4 shrink-0 text-text-secondary" aria-hidden="true" />
             )}
-          </span>
-          <span className="min-w-0 truncate font-medium">{completedText}</span>
-          {hasSourceData && (
-            <ChevronDown
-              className={cn(disclosureChevronClassName, 'size-3.5', showSourceList && 'rotate-180')}
-              aria-hidden="true"
-            />
+            <span className="min-w-0 truncate font-medium">{completedText}</span>
+            {hasSourceData && (
+              <ChevronDown
+                className={cn(
+                  disclosureChevronClassName,
+                  'size-3.5',
+                  showSourceList && 'rotate-180',
+                )}
+                aria-hidden="true"
+              />
+            )}
+          </button>
+          {hasDetails && (
+            <HoverCard openDelay={50} open={showDetails} onOpenChange={setShowDetails}>
+              <HoverCardTrigger
+                tabIndex={0}
+                className={cn(
+                  'ml-auto inline-flex cursor-help items-center justify-center rounded-md p-1 text-text-secondary opacity-0 transition-all duration-200 ease-out',
+                  'hover:bg-surface-hover hover:text-text-primary',
+                  'group-focus-within/websearch:opacity-100 group-hover/websearch:opacity-100',
+                  'focus-visible:opacity-100 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-border-heavy',
+                )}
+                onFocus={() => setShowDetails(true)}
+                onBlur={() => setShowDetails(false)}
+                aria-label={localize('com_ui_web_search_details')}
+              >
+                <Info className="size-3.5" aria-hidden="true" />
+              </HoverCardTrigger>
+              <HoverCardPortal>
+                <HoverCardContent side="top" className="z-[999] w-80">
+                  <div className="max-h-[60vh] space-y-2 overflow-y-auto">
+                    {query && (
+                      <div>
+                        <div className="text-[10px] font-medium uppercase tracking-wide text-text-secondary">
+                          {localize('com_ui_search_query')}
+                        </div>
+                        <div className="mt-0.5 text-sm text-text-primary">{query}</div>
+                      </div>
+                    )}
+                    <div className="text-xs text-text-secondary">
+                      {localize(
+                        sourceCount === 1
+                          ? 'com_ui_web_search_source'
+                          : 'com_ui_web_search_sources',
+                        { count: sourceCount },
+                      )}
+                    </div>
+                    {answerBox && (answerBox.title || answerBox.snippet) && (
+                      <div className="border-t border-border-light pt-2">
+                        {answerBox.title && (
+                          <div className="text-sm font-medium text-text-primary">
+                            {answerBox.title}
+                          </div>
+                        )}
+                        {answerBox.snippet && (
+                          <div className="mt-1 text-xs leading-relaxed text-text-secondary">
+                            {answerBox.snippet}
+                          </div>
+                        )}
+                      </div>
+                    )}
+                  </div>
+                </HoverCardContent>
+              </HoverCardPortal>
+            </HoverCard>
           )}
-        </button>
+        </div>
         {hasSourceData && (
           <div style={sourceExpandStyle} onTransitionEnd={handleTransitionEnd}>
             <div className="overflow-hidden" ref={sourceExpandRef}>
@@ -301,20 +364,6 @@ export default function WebSearch({
                     'mt-1.5 max-h-[280px] overflow-y-auto rounded-lg border border-border-light',
                   )}
                 >
-                  {answerBox && (answerBox.title || answerBox.snippet) && (
-                    <div className="border-b border-border-light px-3 py-2.5">
-                      {answerBox.title && (
-                        <div className="text-xs font-semibold text-text-primary">
-                          {answerBox.title}
-                        </div>
-                      )}
-                      {answerBox.snippet && (
-                        <div className="mt-0.5 text-xs leading-relaxed text-text-secondary">
-                          {answerBox.snippet}
-                        </div>
-                      )}
-                    </div>
-                  )}
                   {allSources.map((source, i) => {
                     const domain = getCleanDomain(source.link);
                     const snippet = 'snippet' in source ? source.snippet : undefined;
@@ -327,7 +376,7 @@ export default function WebSearch({
                         className={cn(
                           'flex gap-2.5 px-3 py-2 transition-colors hover:bg-surface-hover',
                           snippet ? 'items-start' : 'items-center',
-                          (i > 0 || !!answerBox) && 'border-t border-border-light',
+                          i > 0 && 'border-t border-border-light',
                         )}
                       >
                         <FaviconImage

client/src/components/Chat/Messages/Content/__tests__/WebSearch.test.tsx

@@ -16,6 +16,8 @@ jest.mock('~/hooks', () => ({
       com_ui_web_searched: 'Searched the web',
       com_ui_web_search_source: `${values?.count ?? 1} source`,
       com_ui_web_search_sources: `${values?.count ?? 0} sources`,
+      com_ui_web_search_details: 'Search details',
+      com_ui_search_query: 'Query',
     };
     return translations[key] || key;
   },
@@ -56,6 +58,7 @@ jest.mock('~/components/Web/Sources', () => ({
 
 jest.mock('lucide-react', () => ({
   Globe: () => <span data-testid="globe-icon" />,
+  Info: () => <span data-testid="info-icon" />,
   ChevronDown: ({ className }: { className?: string }) => (
     <span data-testid="chevron-icon" className={className} />
   ),
@@ -88,6 +91,7 @@ function renderWebSearch({
   isSubmitting = false,
   isLast = false,
   initialProgress = 1,
+  args,
   output,
 }: {
   searchResults?: Record<string, SearchResultData>;
@@ -95,6 +99,7 @@ function renderWebSearch({
   isSubmitting?: boolean;
   isLast?: boolean;
   initialProgress?: number;
+  args?: string | Record<string, unknown>;
   output?: string | null;
 }) {
   return render(
@@ -104,6 +109,7 @@ function renderWebSearch({
           initialProgress={initialProgress}
           isSubmitting={isSubmitting}
           isLast={isLast}
+          args={args}
           output={output}
           attachments={attachments}
         />
@@ -291,7 +297,7 @@ describe('WebSearch', () => {
       expect(matches.length).toBeGreaterThanOrEqual(1);
     });
 
-    it('renders snippets, dates, and the answer box in the source list', () => {
+    it('renders snippets and dates in the source list', () => {
       const attachment = {
         type: Tools.web_search,
         [Tools.web_search]: {
@@ -304,6 +310,24 @@ describe('WebSearch', () => {
               date: 'Jun 12, 2026',
             },
           ],
+        },
+      } as unknown as TAttachment;
+
+      renderWebSearch({ attachments: [attachment] });
+
+      expect(
+        screen.getByText('How context windows change what assistants can do.'),
+      ).toBeInTheDocument();
+      expect(screen.getByText('Jun 12, 2026')).toBeInTheDocument();
+      expect(screen.getByText('example.com')).toBeInTheDocument();
+    });
+
+    it('tucks the query and answer box behind the details hover card', async () => {
+      const attachment = {
+        type: Tools.web_search,
+        [Tools.web_search]: {
+          turn: 0,
+          organic: [{ link: 'https://example.com/context', title: 'Context windows explained' }],
           answerBox: {
             title: 'What is a context window?',
             snippet: 'The amount of text a model can consider at once.',
@@ -311,17 +335,22 @@ describe('WebSearch', () => {
         },
       } as unknown as TAttachment;
 
-      renderWebSearch({ attachments: [attachment] });
+      renderWebSearch({
+        attachments: [attachment],
+        args: { query: 'largest context window LLM 2026' },
+      });
 
-      expect(screen.getByText('What is a context window?')).toBeInTheDocument();
+      expect(screen.queryByText('What is a context window?')).not.toBeInTheDocument();
+
+      const trigger = screen.getByLabelText('Search details');
+      fireEvent.focus(trigger);
+
+      expect(await screen.findByText('What is a context window?')).toBeInTheDocument();
       expect(
         screen.getByText('The amount of text a model can consider at once.'),
       ).toBeInTheDocument();
-      expect(
-        screen.getByText('How context windows change what assistants can do.'),
-      ).toBeInTheDocument();
-      expect(screen.getByText('Jun 12, 2026')).toBeInTheDocument();
-      expect(screen.getByText('example.com')).toBeInTheDocument();
+      expect(screen.getByText('largest context window LLM 2026')).toBeInTheDocument();
+      expect(screen.getByText('1 source')).toBeInTheDocument();
     });
 
     it('uses standard tool-row spacing and reveals its chevron on hover or focus', () => {
@@ -332,7 +361,8 @@ describe('WebSearch', () => {
       renderWebSearch({ searchResults });
 
       const button = screen.getByRole('button', { name: /Searched the web/ });
-      expect(button.parentElement).toHaveClass('my-1');
+      expect(button.parentElement).toHaveClass('h-5');
+      expect(button.parentElement?.parentElement).toHaveClass('my-1');
       expect(button).not.toHaveClass('py-1');
       expect(button).not.toHaveClass('transition-colors');
       const chevron = screen.getByTestId('chevron-icon');

client/src/locales/en/translation.json

@@ -1983,6 +1983,7 @@
   "com_ui_search_language": "Search languages...",
   "com_ui_search_people_placeholder": "Search for people or groups by name or email",
   "com_ui_search_projects": "Search projects",
+  "com_ui_search_query": "Query",
   "com_ui_search_result_count": "{{count}} result found",
   "com_ui_search_results_count": "{{count}} results found",
   "com_ui_search_skills": "Search skills...",
@@ -2560,6 +2561,7 @@
   "com_ui_web_search_scraper_tavily_key": "Get your Tavily API key",
   "com_ui_web_search_searxng_api_key": "Enter SearXNG API Key (optional)",
   "com_ui_web_search_searxng_instance_url": "SearXNG Instance URL",
+  "com_ui_web_search_details": "Search details",
   "com_ui_web_search_source": "{{count}} source",
   "com_ui_web_search_sources": "{{count}} sources",
   "com_ui_web_searched": "Searched the web",