Fix Python async syntax errors in copilot-sdk-python instructions

[Copilot]

Pull Request Checklist

• I have read and followed the CONTRIBUTING.md guidelines.
• My contribution adds a new instruction, prompt, agent, or skill file in the correct directory.
• The file follows the required naming convention.
• The content is clearly structured and follows the example format.
• I have tested my instructions, prompt, agent, or skill with GitHub Copilot.
• I have run npm start and verified that README.md is up to date.

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Description

Code examples in copilot-sdk-python.instructions.md used async with and await at module level, causing SyntaxError: 'async with' outside async function when executed.

Fixed sections:

• Basic Client Setup - Wrapped in async def main() with proper imports
• Manual Server Control - Wrapped in async def main() with proper imports

Before:

from copilot import CopilotClient

async with CopilotClient() as client:
    # Use client...
    pass

After:

from copilot import CopilotClient
import asyncio

async def main():
    async with CopilotClient() as client:
        # Use client...
        pass

asyncio.run(main())

Examples are now self-contained, executable Python code consistent with the complete examples elsewhere in the document.

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Type of Contribution

• New instruction file.
• New prompt file.
• New agent file.
• New collection file.
• New skill file.
• Update to existing instruction, prompt, agent, collection or skill.
• Other (please specify):

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Additional Notes

Changes are minimal and surgical - only the two introductory examples that would fail standalone execution. Fragment examples showing code within an existing async context remain unchanged.

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By submitting this pull request, I confirm that my contribution abides by the Code of Conduct and will be licensed under the MIT License.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Bug: Python docstring erro</issue_title>
<issue_description>The docstring does not work: instructions/copilot-sdk-python.instructions.md

>>> from copilot import CopilotClient
>>> 
>>> async with CopilotClient() as client:
...     # Use client...
...     pass
... 
  File "<stdin>", line 1
SyntaxError: 'async with' outside async function
```</issue_description>

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

<comments>
</comments>

• Fixes Bug: Python docstring erro #616

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Pull request overview

This PR fixes Python syntax errors in the copilot-sdk-python.instructions.md file where standalone code examples used async/await syntax at module level, which would cause SyntaxError: 'async with' outside async function when executed.

Changes:

• Wrapped the "Basic Client Setup" example in an async def main() function with asyncio.run(main())
• Wrapped the "Manual Server Control" example in an async def main() function with asyncio.run(main())
• Added necessary import asyncio statements to both examples