Separate out icons for sidebar

utils/material_symbols.json

@@ -48,6 +48,12 @@
     "unfold-hide": "arrow_right",
     "unfold-show": "arrow_drop_down",
 
+    "sb_project": "bookmark_manager",
+    "sb_novel": "book_4_spark",
+    "sb_search": "search",
+    "sb_outline": "summarize",
+    "sb_build": "export_notes",
+
     "add": "add",
     "bookmarks": "bookmarks",
     "browse": "folder_open",
@@ -83,13 +89,10 @@
     "more_arrow": "arrow_right",
     "more_vertical": "more_vert",
     "noncheckable": "indeterminate_check_box",
-    "novel_view": "book_4_spark",
     "open": "open_in_new",
-    "outline": "summarize",
     "panel": "dock_to_bottom",
     "pin": "keep",
     "project_copy": "folder_copy",
-    "project_view": "bookmark_manager",
     "quote": "format_quote",
     "refresh": "refresh",
     "remove": "remove",