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/devui/pyproject.toml

@@ -4,7 +4,7 @@ description = "Debug UI for Microsoft Agent Framework with OpenAI-compatible API
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "0.1.0b1"
+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"
@@ -23,7 +23,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework",
+    "agent-framework-core",
     "fastapi>=0.104.0",
     "uvicorn[standard]>=0.24.0",
     "python-dotenv>=1.0.0",
@@ -92,10 +92,6 @@ include = "../../shared_tasks.toml"
 mypy = "mypy --config-file $POE_ROOT/pyproject.toml agent_framework_devui"
 test = "pytest --cov=agent_framework_devui --cov-report=term-missing:skip-covered tests"
 
-[tool.uv.build-backend]
-module-name = "agent_framework_devui"
-module-root = ""
-
 [build-system]
-requires = ["uv_build>=0.8.2,<0.9.0"]
-build-backend = "uv_build"
+requires = ["flit-core >= 3.11,<4.0"]
+build-backend = "flit_core.buildapi"