fix: bracket fills stay on legs; by-tag lookup surfaces entry-leg fill

General translation must not echo leg fills onto the OTOCO parent —
flatten_fills adds parent AND legs, double-counting entries in journal
reconstruction. The cancel-vs-fill reconcile still sees executed shares:
get_order_by_client_order_id surfaces the entry leg's fill on its result.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

tests/test_tradier_client.py

@@ -81,7 +81,9 @@ class TranslateOrderTests(unittest.TestCase):
         self.assertEqual(o["symbol"], "DAMD")
         self.assertEqual(o["side"], "buy")
         self.assertEqual(o["qty"], "8000")
-        self.assertEqual(o["filled_qty"], "8000")
+        # fills stay on legs only — parent echoing them double-counts in
+        # journal reconstruction (flatten_fills adds parent AND legs)
+        self.assertEqual(o["filled_qty"], "0")
         # the stop leg is findable the way exit_manager._stop_leg looks
         stops = [leg for leg in o["legs"] if leg["type"] == "stop"
                  and leg["side"] == "sell" and leg["symbol"] == "DAMD"]
@@ -271,3 +273,19 @@ class CancelRacedFillTests(unittest.TestCase):
         emitted = [c.args[0].__class__.__name__ for c in store.emit.call_args_list]
         self.assertIn("OrderCancelledEvent", emitted)
         self.assertNotIn("OrderFilledEvent", emitted)
+
+
+class ByTagLookupFillTests(unittest.TestCase):
+    def test_lookup_surfaces_entry_leg_fill_on_bracket(self):
+        client = TradierClient(SETTINGS)
+        raw = [{"id": 1, "class": "otoco", "status": "open", "tag": "cid-9",
+                "leg": [{"id": 2, "symbol": "DAMD", "side": "buy", "quantity": 8000,
+                         "type": "limit", "status": "filled",
+                         "exec_quantity": 8000, "avg_fill_price": 1.96},
+                        {"id": 3, "symbol": "DAMD", "side": "sell", "type": "stop",
+                         "status": "open", "stop_price": 1.8}]}]
+        with patch.object(client, "_orders_raw", return_value=raw):
+            found = client.get_order_by_client_order_id("cid-9")
+        self.assertEqual(found["filled_qty"], "8000")
+        self.assertEqual(found["filled_avg_price"], "1.96")
+        self.assertEqual(found["status"], "filled")