Python: Add integration tests for durabletask package

[larohra]

Motivation and Context

Description

Add integration tests for durabletask package that will execute our samples and validate they're working fine.

Contribution Checklist

• The code builds clean without any errors or warnings
• The PR follows the Contribution Guidelines
• All unit tests pass, and I have added new tests where possible
• Is this a breaking change? If yes, add "[BREAKING]" prefix to the title of the PR.

[Copilot]

Pull request overview

This PR adds comprehensive integration tests for the durabletask package. The tests validate that all the getting started samples work correctly by automatically starting worker processes and executing sample scenarios against a Durable Task Scheduler instance.

Changes:

• Added 7 integration test files covering single agent, multi-agent, orchestration, streaming, and human-in-the-loop patterns
• Created test infrastructure (conftest.py, testutils.py) with pytest fixtures for automatic worker process management
• Fixed bugs in sample code including max retry attempt handling in HITL workflows and activity function return types
• Updated API usage from deprecated AgentRunResponse to AgentResponse
• Added comprehensive documentation in README.md and .env.example

Reviewed changes

Copilot reviewed 17 out of 18 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
python/packages/durabletask/tests/integration_tests/conftest.py	Pytest configuration with fixtures for DTS, Redis, and worker process management
python/packages/durabletask/tests/integration_tests/testutils.py	Helper utilities for orchestration testing including client creation and wait helpers
python/packages/durabletask/tests/integration_tests/README.md	Documentation for running integration tests with setup instructions
python/packages/durabletask/tests/integration_tests/.env.example	Example environment configuration file
python/packages/durabletask/tests/integration_tests/test_01_single_agent.py	Tests for basic single agent functionality
python/packages/durabletask/tests/integration_tests/test_02_multi_agent.py	Tests for multi-agent operations with tool usage
python/packages/durabletask/tests/integration_tests/test_03_single_agent_streaming.py	Tests for streaming responses via Redis
python/packages/durabletask/tests/integration_tests/test_04_single_agent_orchestration_chaining.py	Tests for agent chaining in orchestrations
python/packages/durabletask/tests/integration_tests/test_05_multi_agent_orchestration_concurrency.py	Tests for concurrent multi-agent orchestrations
python/packages/durabletask/tests/integration_tests/test_06_multi_agent_orchestration_conditionals.py	Tests for conditional orchestration branching
python/packages/durabletask/tests/integration_tests/test_07_single_agent_orchestration_hitl.py	Tests for human-in-the-loop workflows
python/samples/getting_started/durabletask/07_single_agent_orchestration_hitl/worker.py	Fixed max retry attempt handling and activity function return types
python/samples/getting_started/azure_functions/07_single_agent_orchestration_hitl/function_app.py	Fixed max retry attempt handling
python/samples/getting_started/durabletask/04_single_agent_orchestration_chaining/worker.py	Updated AgentRunResponse to AgentResponse
python/samples/getting_started/durabletask/03_single_agent_streaming/worker.py	Updated AgentRunResponseUpdate to AgentResponseUpdate
python/packages/durabletask/pyproject.toml	Updated version and added pytest markers for integration tests
python/packages/durabletask/agent_framework_durabletask/_executors.py	Updated get_run_request API to use options dictionary
python/uv.lock	Removed s390x platform wheels for greenlet package

[markwallace-microsoft]

Python Test Coverage Report •

File	Stmts	Miss	Cover	Missing
TOTAL	16561	2491	84%

report-only-changed-files is enabled. No files were changed during this commit :)

Python Unit Test Overview

Tests	Skipped	Failures	Errors	Time
3239	234 💤	0 ❌	0 🔥	1m 4s ⏱️