Add navigation and copy functionality to move dialog

- Add breadcrumb navigation to move dialog for folder navigation
- Add 'Copy' button alongside 'Move' button in the dialog
- Implement copyFile and copyFolder functions in fileOps
- Add copy handler for batch operations
- Add CSS styles for btn-outline button (light and dark mode)
- Add translations for new dialog strings

fix: properly show home folder contents in move dialog

- Use effectiveParentId for all checks and rendering
- Show 'Select this folder' option for home folder
- Only show 'go to parent' when breadcrumb has items (navigated into subfolders)
fix: improve move dialog UX

- Hide breadcrumb at home folder level (not needed)
- Only show 'Select this folder' option after navigating into subfolders
- Show 'no subfolders' message when there are no folders to navigate
- Properly display subfolders for navigation

static/css/components/dialogs.css

@@ -77,6 +77,17 @@
 	border-top: 1px solid #e2e8f0;
 }
 
+.rename-dialog-buttons .btn-outline {
+	background: transparent;
+	color: #4a5568;
+	border: 1px solid #cbd5e0;
+}
+
+.rename-dialog-buttons .btn-outline:hover {
+	background: #f7fafc;
+	border-color: #a0aec0;
+}
+
 /* Share Dialog — Modern Style */
 .share-dialog {
 	position: fixed;
@@ -343,7 +354,7 @@
 
 /* Move dialog breadcrumb navigation */
 .move-dialog-breadcrumb {
-	display: flex;
+	display: none; /* Hidden by default, shown via JS when navigating into subfolders */
 	align-items: center;
 	flex-wrap: wrap;
 	gap: 4px;
@@ -657,6 +668,17 @@
 	border-top-color: #334155;
 }
 
+[data-theme="dark"] .rename-dialog-buttons .btn-outline {
+	background: transparent;
+	color: #94a3b8;
+	border-color: #475569;
+}
+
+[data-theme="dark"] .rename-dialog-buttons .btn-outline:hover {
+	background: #334155;
+	border-color: #64748b;
+}
+
 [data-theme="dark"] .shared-dialog-content {
 	background-color: #1e293b;
 }