Clean install: align deletions with NiklasCFW pack script

- Remove entire sd:/atmosphere and sd:/switch (lists simplified)
- Add sd:/SaltySD/patches; drop nyx.ini and config/quickntp to match script
- Delete sd:/switch/tinfoil/db after backup restore via clean_post_restore_dirs_to_delete

Made-with: Cursor

source/install_clean.c

@@ -102,6 +102,7 @@ int clean_mode_restore(void) {
         set_color(COLOR_GREEN);
         gfx_printf("  [OK] Wiederherstellung abgeschlossen\n");
         set_color(COLOR_WHITE);
+        delete_path_list(clean_post_restore_dirs_to_delete, "switch/ (nach Restore)");
     }
     cleanup_backup();
     return res;