Not using direct write, but tmp write to avoid JSON parse error

cli/src/zshell/subcommands/scheme.py

@@ -609,6 +609,17 @@ def generate(
             name = palette_obj.scheme
             flavor = palette_obj.variant
 
+            display_name = schemes[p_scheme].name
+            config["colors"]["presets"] = {
+                "name": display_name,
+                "variant": p_variant,
+                "accent": accent or "",
+            }
+            tmp = CONFIG.with_suffix(".json.tmp")
+            with tmp.open("w") as f:
+                json.dump(config, f, indent=4)
+            os.replace(tmp, CONFIG)
+
             seed = hex_to_hct(colors.get("primary", "#000000").lstrip("#"))
         else:
             image_path = image_path or Path(WALL_PATH)