Fix remaining notes bugs: breadcrumb root navigation and line break preservation

- Add root breadcrumb item for easy navigation back to notes home
- Add onClearActiveFile callback to deselect active file when clicking root
- Enable line breaks preservation in markdown (breaks: true) to fix forced line breaks when pasting text
- Root breadcrumb now allows users to return to notes tree view

Co-authored-by: DeJeune <67425183+DeJeune@users.noreply.github.com>

src/renderer/src/pages/notes/HeaderNavbar.tsx

@@ -16,7 +16,14 @@ import { menuItems } from './MenuConfig'
 
 const logger = loggerService.withContext('HeaderNavbar')
 
-const HeaderNavbar = ({ notesTree, getCurrentNoteContent, onToggleStar, onExpandPath, onRenameNode }) => {
+const HeaderNavbar = ({
+  notesTree,
+  getCurrentNoteContent,
+  onToggleStar,
+  onExpandPath,
+  onRenameNode,
+  onClearActiveFile
+}) => {
   const { showWorkspace, toggleShowWorkspace } = useShowWorkspace()
   const { activeNode } = useActiveNode(notesTree)
   const [breadcrumbItems, setBreadcrumbItems] = useState<
@@ -54,11 +61,14 @@ const HeaderNavbar = ({ notesTree, getCurrentNoteContent, onToggleStar, onExpand
 
   const handleBreadcrumbClick = useCallback(
     (item: { treePath: string; isFolder: boolean }) => {
-      if (item.isFolder && onExpandPath) {
+      if (item.treePath === '/' && onClearActiveFile) {
+        // Clicking root clears the active file and returns to tree view
+        onClearActiveFile()
+      } else if (item.isFolder && onExpandPath) {
         onExpandPath(item.treePath)
       }
     },
-    [onExpandPath]
+    [onExpandPath, onClearActiveFile]
   )
 
   const handleTitleChange = useCallback((e: React.ChangeEvent<HTMLInputElement>) => {
@@ -166,8 +176,18 @@ const HeaderNavbar = ({ notesTree, getCurrentNoteContent, onToggleStar, onExpand
       }
     })
 
+    // Add root directory as the first breadcrumb item if not already at root
+    if (pathParts.length > 0) {
+      items.unshift({
+        key: 'root',
+        title: t('notes.root_directory') || 'Notes',
+        treePath: '/',
+        isFolder: true
+      })
+    }
+
     setBreadcrumbItems(items)
-  }, [activeNode, notesTree])
+  }, [activeNode, notesTree, t])
 
   return (
     <NavbarHeader

src/renderer/src/pages/notes/NotesPage.tsx

@@ -777,6 +777,10 @@ const NotesPage: FC = () => {
     [notesTree, updateExpandedPaths]
   )
 
+  const handleClearActiveFile = useCallback(() => {
+    dispatch(setActiveFilePath(undefined))
+  }, [dispatch])
+
   const getCurrentNoteContent = useCallback(() => {
     if (settings.defaultEditMode === 'source') {
       return currentContent
@@ -870,6 +874,7 @@ const NotesPage: FC = () => {
             onToggleStar={handleToggleStar}
             onExpandPath={handleExpandPath}
             onRenameNode={handleRenameNode}
+            onClearActiveFile={handleClearActiveFile}
           />
           <NotesEditor
             activeNodeId={activeNode?.id}

src/renderer/src/utils/markdownConverter.ts

@@ -81,7 +81,7 @@ export interface TaskListOptions {
 const md = new MarkdownIt({
   html: true, // Enable HTML tags in source
   xhtmlOut: true, // Use '>' for single tags (<br> instead of <br />)
-  breaks: false,
+  breaks: true, // Preserve line breaks when pasting text
   linkify: false, // Autoconvert URL-like text to links
   typographer: false // Enable smartypants and other sweet transforms
 })