Python: Fixed declarative samples

[dmytrostruk]

Motivation and Context

• Fixed AgentFactory to pass chat_options as default_options instead of **kwargs, which caused response_format, temperature, and other options to be silently dropped.
• Fixed Property.from_dict() to map YAML type field to kind instead of discarding it.
• Fixed PropertySchema.to_json_schema() to produce valid JSON Schema (added root "type": "object", converted per-property required booleans to top-level array, removed empty enum arrays).
• Updated declarative samples to correctly initialize load_dotenv() and safe_mode for PowerFx expression support.
• Added unit tests for the above fixes.

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.

[markwallace-microsoft]

Python Test Coverage Report •

File	Stmts	Miss	Cover	Missing
packages/declarative/agent_framework_declarative
_loader.py	240	115	52%	311–317, 481–486, 517, 550–553, 556–558, 561–567, 594–600, 644–653, 655, 658, 660, 671, 675–681, 690, 692, 694, 700, 702, 704, 706, 708, 721–726, 733–738, 740, 744–754, 756–761, 769, 771, 776, 779–782, 785–786, 789–790, 804–805, 808–809, 827, 834–838
_models.py	484	28	94%	28, 31, 64, 69, 514, 555–558, 582, 590, 598, 606, 629, 655, 679, 707, 817, 879, 991, 1117, 1119, 1121, 1123, 1125, 1127, 1131, 1133
TOTAL	21213	3299	84%

Python Unit Test Overview

Tests	Skipped	Failures	Errors	Time
4183	239 💤	0 ❌	0 🔥	1m 16s ⏱️

[Copilot]

Pull request overview

This PR fixes several issues in the Python declarative agent stack that caused YAML-defined schema/types and model options to be mishandled, and updates declarative samples + tests to validate the corrected behavior.

Changes:

• Fix AgentFactory agent creation to pass parsed model/tool/output options via default_options (instead of **kwargs) so options aren’t silently dropped.
• Fix YAML schema handling by mapping type → kind in Property.from_dict() and generating a more valid JSON Schema shape in PropertySchema.to_json_schema().
• Update declarative samples for dotenv initialization and safe_mode usage; add unit tests covering these behaviors.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
python/samples/02-agents/declarative/openai_responses_agent.py	Adds dotenv init and sets safe_mode=False for declarative YAML execution.
python/samples/02-agents/declarative/microsoft_learn_agent.py	Adds dotenv init and sets safe_mode=False when creating agents with Azure credential.
python/samples/02-agents/declarative/mcp_tool_yaml.py	Adjusts dotenv initialization ordering and keeps declarative MCP sample setup.
python/samples/02-agents/declarative/inline_yaml.py	Adds dotenv init and sets safe_mode=False for inline YAML that uses PowerFx env access.
python/samples/02-agents/declarative/get_weather_agent.py	Adds dotenv init for the sample’s environment-variable-based configuration.
python/packages/declarative/tests/test_declarative_models.py	Adds tests for type→kind mapping and JSON Schema generation.
python/packages/declarative/tests/test_declarative_loader.py	Adds tests ensuring output schema + chat options land in Agent.default_options.
python/packages/declarative/agent_framework_declarative/_models.py	Implements type→kind mapping and improves JSON Schema output formatting.
python/packages/declarative/agent_framework_declarative/_loader.py	Fixes passing parsed chat options into Agent(default_options=...) in sync/async paths.