eval: add re-host scenario and fixures

[anchenyi]

Description

Add re-host scenario and fixures

Checklist

• Tests pass locally (cd tests && npm test)
• Title has one of the prefixes: fix:, feat:, feature:, chore:, misc:, test:, eval:
• If modifying skill descriptions: verified routing correctness with integration tests (In tests/, npm run test:integration -- <skill> or npm run test:vally -- --skill <skill>)

Related Issues

[Copilot]

Pull request overview

This PR extends the Microsoft Foundry Vally eval suite by adding a new “migration / re-host” scenario and introducing several Python fixture projects (containerized FastAPI apps + a local MCP tool) that the eval environment can copy in as starting points.

Changes:

• Added a new “Migration - OpenAI Agents SDK to Foundry” stimulus to the Foundry eval suite, including environment fixture injection.
• Added three self-contained fixture apps (OpenAI Agents SDK, Google ADK, Claude Agent SDK) exposing /health and /chat, each backed by a local get_order_status MCP tool.
• Added fixture-level ignore files to prevent committing env/venv/cache artifacts and to reduce Docker build context noise.

Reviewed changes

Copilot reviewed 22 out of 22 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
evals/azure-skills/microsoft-foundry/fixture/openai-agents-sdk/requirements.txt	Pins dependencies for the OpenAI Agents SDK fixture service.
evals/azure-skills/microsoft-foundry/fixture/openai-agents-sdk/mcp_server.py	Adds a simple FastMCP stdio server exposing get_order_status.
evals/azure-skills/microsoft-foundry/fixture/openai-agents-sdk/Dockerfile	Containerizes the OpenAI Agents SDK fixture as a non-root FastAPI/uvicorn service.
evals/azure-skills/microsoft-foundry/fixture/openai-agents-sdk/agent.py	Implements the OpenAI Agents SDK-based FastAPI app that uses the MCP tool.
evals/azure-skills/microsoft-foundry/fixture/openai-agents-sdk/.env.example	Documents required env vars for running the OpenAI fixture.
evals/azure-skills/microsoft-foundry/fixture/openai-agents-sdk/.dockerignore	Excludes local env/venv/cache artifacts from Docker build context.
evals/azure-skills/microsoft-foundry/fixture/google-adk/requirements.txt	Pins dependencies for the Google ADK fixture service.
evals/azure-skills/microsoft-foundry/fixture/google-adk/mcp_server.py	Adds the shared get_order_status FastMCP stdio server for the Google ADK fixture.
evals/azure-skills/microsoft-foundry/fixture/google-adk/main.py	Implements the Google ADK-based FastAPI app with session/runner wiring.
evals/azure-skills/microsoft-foundry/fixture/google-adk/Dockerfile	Containerizes the Google ADK fixture as a non-root FastAPI/uvicorn service.
evals/azure-skills/microsoft-foundry/fixture/google-adk/customer_support_agent/agent.py	Defines the Google ADK agent + MCP tool wiring used by the FastAPI app.
evals/azure-skills/microsoft-foundry/fixture/google-adk/customer_support_agent/init.py	Marks customer_support_agent as a package for imports.
evals/azure-skills/microsoft-foundry/fixture/google-adk/.env.example	Documents required env vars for running the Google fixture.
evals/azure-skills/microsoft-foundry/fixture/google-adk/.dockerignore	Excludes local env/venv/cache artifacts from Docker build context.
evals/azure-skills/microsoft-foundry/fixture/claude-agent-sdk/requirements.txt	Pins dependencies for the Claude Agent SDK fixture service.
evals/azure-skills/microsoft-foundry/fixture/claude-agent-sdk/mcp_server.py	Adds the shared get_order_status FastMCP stdio server for the Claude fixture.
evals/azure-skills/microsoft-foundry/fixture/claude-agent-sdk/Dockerfile	Containerizes the Claude Agent SDK fixture as a non-root FastAPI/uvicorn service.
evals/azure-skills/microsoft-foundry/fixture/claude-agent-sdk/agent.py	Implements the Claude Agent SDK-based FastAPI app configured to call the MCP tool.
evals/azure-skills/microsoft-foundry/fixture/claude-agent-sdk/.env.example	Documents required env vars for running the Claude fixture.
evals/azure-skills/microsoft-foundry/fixture/claude-agent-sdk/.dockerignore	Excludes local env/venv/cache artifacts from Docker build context.
evals/azure-skills/microsoft-foundry/fixture/.gitignore	Ignores env/venv/cache artifacts across all fixtures.
evals/azure-skills/microsoft-foundry/eval.yaml	Adds a new migration/re-host stimulus and updates the golden-path prompt with a model-selection instruction.