refactor: Move maintenance scripts to a dedicated maintenance_scripts/ directory.

maintenance_scripts/check_effects_ids.py

@@ -0,0 +1,16 @@
+import sqlite3
+import os
+
+DB_PATH = os.path.join("database", "umamusume.db")
+
+def check_effects_card_ids():
+    conn = sqlite3.connect(DB_PATH)
+    cur = conn.cursor()
+    
+    cur.execute("SELECT DISTINCT card_id FROM support_effects LIMIT 10")
+    print(f"Distinct card_ids in support_effects: {[row[0] for row in cur.fetchall()]}")
+    
+    conn.close()
+
+if __name__ == "__main__":
+    check_effects_card_ids()