feat(V2): IBKR read tool schemas + dispatch functions

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/unit/exchanges/ibkr/test_tools.py

@@ -0,0 +1,28 @@
+from __future__ import annotations
+
+from unittest.mock import AsyncMock, MagicMock
+
+import pytest
+from cerbero_mcp.exchanges.ibkr import tools as t
+
+
+def test_place_order_req_schema():
+    req = t.PlaceOrderReq(symbol="AAPL", side="buy", qty=1)
+    assert req.order_type == "market"
+    assert req.tif == "day"
+    assert req.exchange == "SMART"
+
+
+def test_place_order_req_options_validates_occ():
+    req = t.PlaceOrderReq(
+        symbol="AAPL  240119C00190000", side="buy", qty=1, asset_class="options",
+    )
+    assert req.asset_class == "options"
+
+
+@pytest.mark.asyncio
+async def test_get_account_tool_calls_client():
+    client = MagicMock()
+    client.get_account = AsyncMock(return_value={"netliquidation": {"amount": 10000}})
+    res = await t.get_account(client, t.GetAccountReq())
+    assert res["netliquidation"]["amount"] == 10000