Python: [BREAKING] Remove deprecated kwargs compatibility paths (#4858)

* [BREAKING] Remove deprecated kwargs compatibility paths

Remove the deprecated kwargs compatibility shims across core agents, clients, tools, middleware, and telemetry.

Keep workflow kwargs behavior intact in this branch and follow up separately in #4850.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Fix PR CI fallout for kwargs removal

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Address PR review feedback

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* updates

* Fix Azure AI CI fallout

Remove the stale _get_current_conversation_id override from the Azure AI client after the OpenAI base helper was deleted.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* fixed new classes

* Fix Assistants deprecated import gating

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Fix integration replay regressions

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Switch multi-agent hosting samples to Azure chat completions

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Simplify Azure multi-agent sample config

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

python/packages/foundry/tests/foundry/test_foundry_agent.py

@@ -2,6 +2,7 @@
 
 from __future__ import annotations
 
+import inspect
 import os
 import sys
 from typing import Any
@@ -68,6 +69,17 @@ def test_raw_foundry_agent_chat_client_init_with_agent_name() -> None:
     assert client.agent_version == "1.0"
 
 
+def test_raw_foundry_agent_chat_client_init_uses_explicit_parameters() -> None:
+    signature = inspect.signature(RawFoundryAgentChatClient.__init__)
+
+    assert "default_headers" in signature.parameters
+    assert "instruction_role" in signature.parameters
+    assert "compaction_strategy" in signature.parameters
+    assert "tokenizer" in signature.parameters
+    assert "additional_properties" in signature.parameters
+    assert all(parameter.kind != inspect.Parameter.VAR_KEYWORD for parameter in signature.parameters.values())
+
+
 def test_raw_foundry_agent_chat_client_get_agent_reference_with_version() -> None:
     """Test agent reference includes version when provided."""
 
@@ -129,6 +141,15 @@ def test_raw_foundry_agent_chat_client_as_agent_preserves_client_type() -> None:
     assert named_agent.client.agent_name == "test-agent"
 
 
+def test_raw_foundry_agent_chat_client_as_agent_uses_explicit_parameters() -> None:
+    signature = inspect.signature(RawFoundryAgentChatClient.as_agent)
+
+    assert "compaction_strategy" in signature.parameters
+    assert "tokenizer" in signature.parameters
+    assert "additional_properties" in signature.parameters
+    assert all(parameter.kind != inspect.Parameter.VAR_KEYWORD for parameter in signature.parameters.values())
+
+
 async def test_raw_foundry_agent_chat_client_prepare_options_validates_tools() -> None:
     """Test that _prepare_options rejects non-FunctionTool objects."""
 
@@ -210,6 +231,17 @@ def test_foundry_agent_chat_client_init() -> None:
     assert client.agent_name == "test-agent"
 
 
+def test_foundry_agent_chat_client_init_uses_explicit_parameters() -> None:
+    signature = inspect.signature(_FoundryAgentChatClient.__init__)
+
+    assert "default_headers" in signature.parameters
+    assert "instruction_role" in signature.parameters
+    assert "compaction_strategy" in signature.parameters
+    assert "tokenizer" in signature.parameters
+    assert "additional_properties" in signature.parameters
+    assert all(parameter.kind != inspect.Parameter.VAR_KEYWORD for parameter in signature.parameters.values())
+
+
 def test_raw_foundry_agent_init_creates_client() -> None:
     """Test that RawFoundryAgent creates a client internally."""
 
@@ -241,6 +273,28 @@ def test_raw_foundry_agent_init_with_custom_client_type() -> None:
     assert isinstance(agent.client, RawFoundryAgentChatClient)
 
 
+def test_raw_foundry_agent_init_uses_explicit_parameters() -> None:
+    signature = inspect.signature(RawFoundryAgent.__init__)
+
+    assert "instructions" in signature.parameters
+    assert "default_options" in signature.parameters
+    assert "compaction_strategy" in signature.parameters
+    assert "tokenizer" in signature.parameters
+    assert "additional_properties" in signature.parameters
+    assert all(parameter.kind != inspect.Parameter.VAR_KEYWORD for parameter in signature.parameters.values())
+
+
+def test_foundry_agent_init_uses_explicit_parameters() -> None:
+    signature = inspect.signature(FoundryAgent.__init__)
+
+    assert "instructions" in signature.parameters
+    assert "default_options" in signature.parameters
+    assert "compaction_strategy" in signature.parameters
+    assert "tokenizer" in signature.parameters
+    assert "additional_properties" in signature.parameters
+    assert all(parameter.kind != inspect.Parameter.VAR_KEYWORD for parameter in signature.parameters.values())
+
+
 def test_raw_foundry_agent_init_rejects_invalid_client_type() -> None:
     """Test that invalid client_type raises TypeError."""
 

python/packages/foundry/tests/foundry/test_foundry_chat_client.py

@@ -2,6 +2,7 @@
 
 from __future__ import annotations
 
+import inspect
 import json
 import os
 import sys
@@ -140,6 +141,26 @@ def test_init() -> None:
     assert client.project_client is mock_project_client
 
 
+def test_raw_foundry_chat_client_init_uses_explicit_parameters() -> None:
+    signature = inspect.signature(RawFoundryChatClient.__init__)
+
+    assert "default_headers" in signature.parameters
+    assert "compaction_strategy" in signature.parameters
+    assert "tokenizer" in signature.parameters
+    assert "additional_properties" in signature.parameters
+    assert all(parameter.kind != inspect.Parameter.VAR_KEYWORD for parameter in signature.parameters.values())
+
+
+def test_foundry_chat_client_init_uses_explicit_parameters() -> None:
+    signature = inspect.signature(FoundryChatClient.__init__)
+
+    assert "default_headers" in signature.parameters
+    assert "compaction_strategy" in signature.parameters
+    assert "tokenizer" in signature.parameters
+    assert "additional_properties" in signature.parameters
+    assert all(parameter.kind != inspect.Parameter.VAR_KEYWORD for parameter in signature.parameters.values())
+
+
 def test_init_with_default_header() -> None:
     default_headers = {"X-Unit-Test": "test-guid"}
     mock_openai_client = _make_mock_openai_client()