Merge upstream/main into hosted-declarative

Resolve foundry_hosting/pyproject.toml conflict by keeping the loosened
azure-ai-agentserver-* pins (>=X.Y.ZbN,<NEXT_MAJOR) while taking main's
agent-framework-core>=1.2.1,<2 bump.

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

python/packages/core/agent_framework/__init__.py

@@ -277,11 +277,11 @@ __all__ = [
     "USER_AGENT_TELEMETRY_DISABLED_ENV_VAR",
     "Agent",
     "AgentContext",
-    "AgentFrameworkException",
     "AgentEvalConverter",
     "AgentExecutor",
     "AgentExecutorRequest",
     "AgentExecutorResponse",
+    "AgentFrameworkException",
     "AgentMiddleware",
     "AgentMiddlewareLayer",
     "AgentMiddlewareTypes",

python/packages/core/agent_framework/_telemetry.py

@@ -79,9 +79,11 @@ def _detect_hosted_environment() -> None:
     except (ModuleNotFoundError, ValueError):
         return
     with contextlib.suppress(ImportError, AttributeError):
-        from azure.ai.agentserver.core import AgentConfig  # pyright: ignore[reportMissingImports]
+        from azure.ai.agentserver.core import (  # pyright: ignore[reportMissingImports]
+            AgentConfig,  # pyright: ignore[reportUnknownVariableType]
+        )
 
-        if AgentConfig.from_env().is_hosted:
+        if AgentConfig.from_env().is_hosted:  # pyright: ignore[reportUnknownMemberType]
             _add_user_agent_prefix(_HOSTED_USER_AGENT_PREFIX)
             _hosted_env_detected = True
 

python/packages/core/pyproject.toml

@@ -4,7 +4,7 @@ description = "Microsoft Agent Framework for building AI Agents with Python. Thi
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.2.0"
+version = "1.2.1"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"

python/packages/core/tests/core/test_exceptions.py

@@ -2,8 +2,6 @@
 
 """Tests for AgentFrameworkException inner_exception handling."""
 
-import pytest
-
 from agent_framework import AgentFrameworkException