feat(workspace): add help page, folder drag and drop, pinned notes section, and clean up editor UX

internal/storage/sqlite.go

@@ -810,7 +810,7 @@ func (s *Store) UpdateThoughtTriage(userID, thoughtID, action, convertTo, target
 				{ID: domain.NewID("blk"), Type: "h2", Content: "Nächste Schritte"},
 				{ID: domain.NewID("blk"), Type: "todo", Content: "Ersten Meilenstein definieren", Checked: false},
 			}
-			doc, err := s.CreateDocument(userID, "", title, "✨", "", blocks, thought.Tags, false)
+			doc, err := s.CreateDocument(userID, "", title, "📄", "", blocks, thought.Tags, false)
 			if err == nil && doc != nil {
 				convertedRefID = doc.ID
 			}