feat(proxy): add method dispatch

tests/unit/test_proxy.py

@@ -1,5 +1,33 @@
+from datetime import datetime, timezone
+from unittest.mock import AsyncMock, MagicMock
+
 import pytest
-from grist_mcp.proxy import parse_proxy_request, ProxyRequest, ProxyError
+
+from grist_mcp.proxy import parse_proxy_request, ProxyRequest, ProxyError, dispatch_proxy_request
+from grist_mcp.session import SessionToken
+
+
+@pytest.fixture
+def mock_session():
+    return SessionToken(
+        token="sess_test",
+        document="sales",
+        permissions=["read", "write"],
+        agent_name="test-agent",
+        created_at=datetime.now(timezone.utc),
+        expires_at=datetime.now(timezone.utc),
+    )
+
+
+@pytest.fixture
+def mock_auth():
+    auth = MagicMock()
+    doc = MagicMock()
+    doc.url = "https://grist.example.com"
+    doc.doc_id = "abc123"
+    doc.api_key = "key"
+    auth.get_document.return_value = doc
+    return auth
 
 
 def test_parse_proxy_request_valid_add_records():
@@ -24,3 +52,23 @@ def test_parse_proxy_request_missing_method():
 
     assert exc_info.value.code == "INVALID_REQUEST"
     assert "method" in str(exc_info.value)
+
+
+@pytest.mark.asyncio
+async def test_dispatch_add_records(mock_session, mock_auth):
+    request = ProxyRequest(
+        method="add_records",
+        table="Orders",
+        records=[{"item": "Widget"}],
+    )
+
+    mock_client = AsyncMock()
+    mock_client.add_records.return_value = [1, 2, 3]
+
+    result = await dispatch_proxy_request(
+        request, mock_session, mock_auth, client=mock_client
+    )
+
+    assert result["success"] is True
+    assert result["data"]["record_ids"] == [1, 2, 3]
+    mock_client.add_records.assert_called_once_with("Orders", [{"item": "Widget"}])