feat: adjust frontend document navigation and opening contexts.

frontend/src/desktop/components/DesktopWorkspace.tsx

@@ -238,7 +238,7 @@ const DesktopWorkspaceContent: React.FC<DesktopWorkspaceProps> = ({
         const doc = items.find(i => String(i.id) === lastId);
         if (doc) {
           e.preventDefault();
-          const target = e.code === 'Enter' ? 'sidepanel' : 'preview';
+          const target = e.code === 'Enter' ? 'inspect' : 'preview';
           openDocument(doc, target);
           return;
         }
@@ -416,7 +416,7 @@ const DesktopWorkspaceContent: React.FC<DesktopWorkspaceProps> = ({
                 getDocumentAsset={getDocumentAsset}
                 onDocumentActivate={(_id, event) => {
                   const isPreview = event && ((event as any).altKey || (event as any).button === 1);
-                  openDocument(doc, isPreview ? 'preview' : 'sidepanel');
+                  openDocument(doc, isPreview ? 'preview' : 'inspect');
                 }}
                 layoutCard={layoutCard}
                 tagHandlers={tagHandlers}

frontend/src/documents/logic/useDocumentItemLogic.ts

@@ -65,7 +65,7 @@ export const useDocumentItemLogic = ({ doc, tagHandlers, viewLogic }: UseDocumen
         },
         onDoubleClick: (event: React.MouseEvent) => {
             const isPreview = event && (event.altKey || event.button === 1);
-            openDocument(doc, isPreview ? 'preview' : 'sidepanel');
+            openDocument(doc, isPreview ? 'preview' : 'inspect');
         },
         onDragStart: (event: DragEvent<HTMLElement>) => onDocumentDragStart?.(event, doc),
         onDragEnd: (event: DragEvent<HTMLElement>) => onDocumentDragEnd?.(event),

frontend/src/documents/logic/useDocumentsNavigation.ts

@@ -111,7 +111,7 @@ export const useDocumentsNavigation = ({
                         const entry = getEntryByKey(activeRow.key);
                         if (entry && entry.type === 'document') {
                             const isPreview = key === ' ' || key === 'Space' || key === 'Spacebar';
-                            openDocument(entry.document, isPreview ? 'preview' : 'sidepanel');
+                            openDocument(entry.document, isPreview ? 'preview' : 'inspect');
                         }
                     }
                 }

frontend/src/lib/context/DocumentOpenContext.tsx

@@ -3,10 +3,10 @@ import type { Document } from '../../types/documents';
 import type { Identifier } from '../../types/identifiers';
 import { createSafeContext } from '../../utils/createSafeContext';
 
-type DocumentOpenTarget = 'preview' | 'sidepanel' | 'viewer';
+type DocumentOpenIntent = 'preview' | 'inspect' | 'navigate';
 
 interface DocumentOpenContextValue {
-    openDocument: (doc: Document, target?: DocumentOpenTarget) => void;
+    openDocument: (doc: Document, intent?: DocumentOpenIntent) => void;
 }
 
 const [DocumentOpenContext, useDocumentOpen] = createSafeContext<DocumentOpenContextValue>('DocumentOpen');
@@ -24,21 +24,28 @@ export const DocumentOpenProvider: React.FC<DocumentOpenProviderProps> = ({
     onOpenPreview,
     onOpenDetailPanel,
 }) => {
-    const openDocument = useCallback((doc: Document, target: DocumentOpenTarget = 'preview') => {
+    const openDocument = useCallback((doc: Document, intent: DocumentOpenIntent = 'preview') => {
         if (!doc) return;
 
-        switch (target) {
+        switch (intent) {
             case 'preview':
                 if (onOpenPreview) {
                     onOpenPreview(doc);
                 }
                 break;
-            case 'sidepanel':
-                if (onOpenDetailPanel) {
-                    onOpenDetailPanel(doc.id);
+            case 'inspect':
+                // Responsive behavior: on mobile, "inspect" just navigates to the document
+                if (window.matchMedia('(max-width: 768px)').matches) {
+                    if (onOpenViewer) {
+                        onOpenViewer(doc.id);
+                    }
+                } else {
+                    if (onOpenDetailPanel) {
+                        onOpenDetailPanel(doc.id);
+                    }
                 }
                 break;
-            case 'viewer':
+            case 'navigate':
                 if (onOpenViewer) {
                     onOpenViewer(doc.id);
                 }