fix: + buttons for note creation pass MouseEvent as type, causing crash

onClick={onCreateNote} passes the React MouseEvent as the first arg
to handleCreateNoteImmediate(type?), which treats it as a truthy type
string. generateUntitledName then calls .toLowerCase() on the event
object, throwing a TypeError and silently aborting note creation.

Wrap both NoteList and TabBar onClick handlers to call with no args.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/components/NoteList.tsx

@@ -611,7 +611,7 @@ function NoteListInner({ entries, selection, selectedNote, allContent, modifiedF
           </button>
           <button
             className="flex items-center text-muted-foreground transition-colors hover:text-foreground"
-            onClick={onCreateNote}
+            onClick={() => onCreateNote()}
             title="Create new note"
           >
             <Plus size={16} />

src/components/TabBar.tsx

@@ -183,7 +183,7 @@ export const TabBar = memo(function TabBar({
       >
         <button
           className="flex items-center justify-center border-none bg-transparent p-0 text-muted-foreground cursor-pointer hover:text-foreground transition-colors"
-          onClick={onCreateNote}
+          onClick={() => onCreateNote?.()}
           title="New note"
         >
           <Plus size={16} />