feat: refactor document opening/preview logic to support preview/sidepanel actions.

frontend/src/app/DocumentsRoute.tsx

@@ -4,8 +4,8 @@ import { useNavigate } from 'react-router-dom';
 import {
   DocumentsFilterProvider,
 } from '../documents/context/DocumentsFilterContext';
-import { PreviewProvider } from '../preview/PreviewContext';
-import { DocumentOpenProvider } from '../context/DocumentOpenContext';
+import { PreviewProvider, usePreviewContext } from '../preview/PreviewContext';
+import { DocumentOpenProvider } from '../contexts/DocumentOpenContext';
 import { useWorkspaceSurface } from './useWorkspaceSurface';
 import { DocumentsHeaderBreadcrumb } from '../documents/panel/DocumentsPanelHeader';
 import { SidebarProvider, useSidebarContext } from '../sidebar/SidebarContext';
@@ -24,8 +24,11 @@ const DocumentsRouteContent: React.FC = () => {
   const {
     sidebarSuppressed,
     expandSidebar,
+    openDetailPanel,
   } = usePanelManager();
 
+  const { openPreview } = usePreviewContext();
+
   const sidebarHidden = sidebarCollapsed || sidebarSuppressed;
 
   const handleHeaderBreadcrumbClick = useCallback((crumb: DocumentsHeaderBreadcrumb) => {
@@ -40,6 +43,12 @@ const DocumentsRouteContent: React.FC = () => {
     navigate(`/documents/${documentId}`);
   }, [navigate]);
 
+  const handleOpenSidepanel = useCallback((docId: string) => {
+    if (openDetailPanel) {
+      openDetailPanel({ documentIds: [docId] });
+    }
+  }, [openDetailPanel]);
+
   const documentsTablePropsWithNav = useMemo(() => (
     surfaceConfig.documentsTableProps
       ? { ...surfaceConfig.documentsTableProps, onBreadcrumbNavigate: handleHeaderBreadcrumbClick }
@@ -84,7 +93,11 @@ const DocumentsRouteContent: React.FC = () => {
       <PreviewProvider
         onNavigate={handleDocumentNavigate}
       >
-        <DocumentOpenProvider onOpenViewer={handleDocumentNavigate}>
+        <DocumentOpenProvider
+          onOpenViewer={handleDocumentNavigate}
+          onOpenPreview={openPreview}
+          onOpenSidepanel={handleOpenSidepanel}
+        >
           {content}
         </DocumentOpenProvider>
       </PreviewProvider>