[VoiceLive]Add Foundry agent integration, filler response configuration, and reasoning effort control

[xitzhang]

…on, and reasoning effort control

Description

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• The pull request does not introduce [breaking changes]
• CHANGELOG is updated for new features, bug fixes or other significant changes.
• I have read the contribution guidelines.

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Testing Guidelines

• Pull request includes test coverage for the included changes.

[Copilot]

Pull request overview

This pull request adds significant new functionality to the Azure AI VoiceLive SDK, including Foundry agent integration, filler response configuration, and reasoning effort control. The PR also includes important security improvements by removing eval() usage from serialization utilities.

Changes:

• Added Foundry agent tool integration with FoundryAgentTool, related events, and response items
• Added filler response configuration with BasicFillerResponseConfig and LlmFillerResponseConfig for handling latency and tool call scenarios
• Added ReasoningEffort enum for controlling reasoning model effort levels
• Added metadata support to Response models
• Removed security vulnerability by replacing eval() with explicit type checking in serialization
• Updated azure-core dependency from 1.36.0 to 1.37.0

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
azure/ai/voicelive/models/_models.py	Added new model classes for Foundry agents, filler responses, and server events; added reasoning_effort and metadata fields to existing models
azure/ai/voicelive/models/_enums.py	Added FillerResponseConfigType, FillerTrigger, FoundryAgentContextType, and ReasoningEffort enums
azure/ai/voicelive/models/init.py	Exported all new models and enums
azure/ai/voicelive/_utils/serialization.py	Replaced eval() with explicit type checking for improved security
azure/ai/voicelive/_utils/model_base.py	Enhanced deserialization for array-encoded strings and mutable types
azure/ai/voicelive/_types.py	Added FillerResponseConfig union type
tests/test_unit_models_filler_foundry.py	Comprehensive unit tests for new Foundry agent and filler response features
tests/test_unit_serialization.py	Security tests verifying eval() removal
samples/async_mcp_sample.py	Updated to use new API version and improved code formatting
pyproject.toml	Updated azure-core dependency to 1.37.0
CHANGELOG.md	Comprehensive documentation of changes
apiview-properties.json	Added mappings for new models

[github-actions]

API Change Check

APIView identified API level changes in this PR and created the following API reviews

azure-ai-voicelive