Canonicalize reward IDs during case-insensitive mapping

tests/test_arc_decoding.py

@@ -1,8 +1,14 @@
 from tests.support import *  # noqa: F401,F403
-from nte_history_exporter.decoder.arc import annotate_arc_groups
+from nte_history_exporter.decoder.arc import annotate_arc_groups, _resolve_arc_metadata
 
 
 class ArcDecodingTests(unittest.TestCase):
+    def test_arc_mapping_lookup_is_case_insensitive_and_canonical(self):
+        reward_id, metadata = _resolve_arc_metadata("fork_Wushoutieyu")
+
+        self.assertEqual(reward_id, "fork_wushoutieyu")
+        self.assertEqual(metadata, {"name": "Raging Flames", "rank": "S"})
+
     def test_page_split_timestamp_variants_form_one_ten_pull(self):
         rows = [
             {

tests/test_mystery_box_decoding.py

@@ -71,6 +71,15 @@ class MysteryBoxDecodingTests(unittest.TestCase):
         self.assertEqual(rows[2]["reward_name"], "Beetle Coin")
         self.assertEqual(rows[2]["reward_rank"], "B")
 
+    def test_reward_mapping_lookup_is_case_insensitive_and_canonical(self):
+        timestamp = datetime(2026, 7, 8, 19, 9, 33, tzinfo=timezone.utc)
+        rows = parse_mystery_box_response(
+            mystery_box_response([("Vehicle039", 1, timestamp)])
+        )
+
+        self.assertEqual(rows[0]["reward_id"], "vehicle039")
+        self.assertEqual(rows[0]["reward_name"], "Draco")
+
     def test_live_session_accepts_partial_final_page(self):
         session = LiveHistorySession("192.168.0.10")
         request = mystery_box_request(3)

tests/test_structured_protocol.py

@@ -157,6 +157,12 @@ class StructuredProtocolTests(unittest.TestCase):
         self.assertEqual(rows[0]["secondary_quantity"], 5)
         self.assertEqual(rows[0]["structured_pool_id"], "CardPool_Character")
 
+    def test_structured_reward_mapping_is_case_insensitive_and_canonical(self):
+        row = decode_response_records(monopoly_payload("DICENORMAL,1"))[0]
+
+        self.assertEqual(row["reward_id"], "DiceNormal")
+        self.assertEqual(row["reward_name"], "Fabricated Dice")
+
     def test_structured_monopoly_parser_falls_back_when_heuristic_returns_no_rows(self):
         payload = monopoly_payload("Dice_ticket_02,50", roll_points=0)