Migrate Agent Framework demos to Azure AI Foundry SDK

[Copilot]

Migrates demos/03-agent-framework/02-basics/agentfw_basics-py to direct Azure AI Foundry SDK usage, eliminating the agent-framework abstraction layer for production-ready patterns.

Core Changes

Dependencies

• Removed: agent-framework, agent-framework-azure-ai
• Added: azure-ai-projects, azure-ai-agents, azure-ai-inference

12 Demo Files Migrated

• Agent lifecycle: create_agent.py, use_existing_agent.py, agents-delete-all.py
• Communication: openai_chat.py, streaming.py, function_calling.py
• State management: threading.py, chat_history.py, long_term_memory.py
• Advanced: structured_output.py, multimodal.py, observability.py

Key Pattern Changes

Before (Agent Framework):

from agent_framework import ChatAgent
from agent_framework.azure import AzureAIAgentClient

agent = ChatAgent(chat_client=AzureAIAgentClient(...))
async for chunk in agent.run_stream(user_input):
    print(chunk.text, end="")

After (Azure AI Foundry SDK):

from azure.ai.agents.aio import AgentsClient

async with AgentsClient(endpoint=endpoint, credential=credential) as client:
    agent = await client.create_agent(model=model, instructions="...")
    thread = await client.create_thread()
    await client.create_message(thread_id=thread.id, role="user", content=user_input)
    
    async with await client.create_run_stream(thread_id=thread.id, assistant_id=agent.id) as stream:
        async for event in stream:
            if event.event == "thread.message.delta":
                print(event.data.delta.content[0].text.value, end="")

Security Hardening

Replaced unsafe eval() usage in function calling demo:

• Expression evaluation: AST-based safe parser with operator whitelist
• JSON parsing: json.loads() instead of eval()

Documentation

• readme.md: Setup, API differences, migration guide, architecture diagram
• MIGRATION.md: Detailed technical changes, trade-off analysis, side-by-side comparisons

Output: demos/03-agent-framework/02-basics/agentfw_basics-py-foundry/

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Migration to Microsoft Foundry</issue_title>
<issue_description>I want you to create and execute a new migration plan to migrate the existing codebase to Microsoft Foundry for the demos in this folder: demos\03-agent-framework\02-basics\agentfw_basics-py

The migration plan should include the following steps:

• Analyze the existing codebase to identify dependencies and components that need to be migrated.
• Set up a new Microsoft Foundry environment.
• Migrate the codebase to the new environment, ensuring compatibility with Microsoft Foundry.
• Test the migrated codebase to ensure all functionalities work as expected.

The output should be placed in a new folder named demos\03-agent-framework\02-basics\agentfw_basics-py-foundry</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Migration to Microsoft Foundry #84

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