import json, os

P = "C:/Users/User/tmp/octopusx_keys.json"
d = json.load(open(P, encoding="utf-8"))
keys = d["keys"]
print("before:", len(keys), "| first:", keys[0][:14], "| last:", keys[-1][:14])
d["keys"] = list(reversed(keys))  # newest first
d["current_index"] = 0
json.dump(d, open(P, "w", encoding="utf-8"), ensure_ascii=False, indent=1)
# bump mtime to force hot reload
os.utime(P)
print("reversed. now first:", d["keys"][0][:14], "| last:", d["keys"][-1][:14])