Python: [BREAKING] Main to core (#983)

* removed pydantic from types

* fix assistants client

* Remove Pydantic usage from workflow code.

* updated lock and test fixes

* moved main to core, and setup meta package

* updated versions

* updated lock

* fixed agents dependency

* added retry to merge tests

---------

Co-authored-by: Evan Mattson <evan.mattson@microsoft.com>

python/packages/core/pyproject.toml

@@ -0,0 +1,115 @@
+[project]
+name = "agent-framework-core"
+description = "Microsoft Agent Framework for building AI Agents with Python. This is the core package that has all the core abstractions and implementations."
+authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
+readme = "README.md"
+requires-python = ">=3.10"
+version = "1.0.0-b251001"
+license-files = ["LICENSE"]
+urls.homepage = "https://learn.microsoft.com/en-us/semantic-kernel/overview/"
+urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
+urls.release_notes = "https://github.com/microsoft/agent-framework/releases?q=tag%3Apython-1&expanded=true"
+urls.issues = "https://github.com/microsoft/agent-framework/issues"
+classifiers = [
+  "License :: OSI Approved :: MIT License",
+  "Development Status :: 5 - Production/Stable",
+  "Intended Audience :: Developers",
+  "Programming Language :: Python :: 3",
+  "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.13",
+  "Framework :: Pydantic :: 2",
+  "Typing :: Typed",
+]
+dependencies = [
+    "openai>=1.99.0",
+    "pydantic>=2,<3",
+    "pydantic-settings>=2,<3",
+    "typing-extensions",
+    "opentelemetry-api>=1.24",
+    "opentelemetry-sdk>=1.24",
+    "mcp[ws]>=1.13",
+    "azure-monitor-opentelemetry>=1.7.0",
+    "azure-monitor-opentelemetry-exporter>=1.0.0b41",
+    "opentelemetry-exporter-otlp-proto-grpc>=1.36.0",
+    "opentelemetry-semantic-conventions-ai>=0.4.13",
+    "aiofiles>=24.1.0",
+    "azure-identity>=1,<2",
+]
+
+[project.optional-dependencies]
+viz = [
+    "graphviz>=0.20.0"
+]
+
+[tool.uv]
+prerelease = "if-necessary-or-explicit"
+environments = [
+    "sys_platform == 'darwin'",
+    "sys_platform == 'linux'",
+    "sys_platform == 'win32'"
+]
+
+[tool.uv-dynamic-versioning]
+fallback-version = "0.0.0"
+
+[tool.pytest.ini_options]
+testpaths = [
+    'tests',
+    'packages/core/tests',
+    'packages/a2a/tests',
+    'packages/azure-ai/tests',
+    'packages/copilotstudio/tests',
+    'packages/mem0/tests',
+    'packages/runtime/tests'
+]
+addopts = "-ra -q -r fEX"
+asyncio_mode = "auto"
+asyncio_default_fixture_loop_scope = "function"
+filterwarnings = []
+timeout = 120
+
+[tool.coverage.run]
+omit = [
+    "**/__init__.py"
+]
+
+[tool.ruff]
+extend = "../../pyproject.toml"
+
+[tool.pyright]
+extend = "../../pyproject.toml"
+exclude = ['tests']
+
+[tool.mypy]
+plugins = ['pydantic.mypy']
+strict = true
+python_version = "3.10"
+ignore_missing_imports = true
+disallow_untyped_defs = true
+no_implicit_optional = true
+check_untyped_defs = true
+warn_return_any = true
+show_error_codes = true
+warn_unused_ignores = false
+disallow_incomplete_defs = true
+disallow_untyped_decorators = true
+
+[tool.bandit]
+targets = ["agent_framework"]
+exclude_dirs = ["tests"]
+
+[tool.poe]
+executor.type = "uv"
+include = "../../shared_tasks.toml"
+[tool.poe.tasks]
+mypy = "mypy --config-file $POE_ROOT/pyproject.toml agent_framework"
+test = "pytest --cov=agent_framework --cov-report=term-missing:skip-covered tests"
+
+[tool.flit.module]
+name = "agent_framework"
+
+[build-system]
+requires = ["flit-core >= 3.11,<4.0"]
+build-backend = "flit_core.buildapi"