优化激活码生成逻辑

RollCall_App/acitvation_code.py

@@ -1,11 +1,13 @@
 # generate_activation_code.py
 import uuid
 import random # For date-based index generation
+from datetime import date
 
 # --- Seed Date Configuration (MUST MATCH THE ONE IN THE MAIN APP) ---
-SEED_YEAR = 2025
+current_date = date.today()
-SEED_MONTH = 5
+SEED_YEAR = current_date.year
-SEED_DAY = 18
+SEED_MONTH = current_date.month
+SEED_DAY = current_date.day
 # ---------------------------------------------------------------------
 
 # --- New Configuration ---