Format Python code with black

[justinmadison]

• Run black on python/ directory to fix formatting issues
• Reformatted 4 files: agent.py, tool_dispatcher.py, base.py, llama_cpp_backend.py
• All tests still pass after formatting

This fixes the black format check failures in GitHub CI.

🤖 Generated with Claude Code

Description

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Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Performance improvement
• Code refactoring
• Tests
• Build/CI changes

Changes Made

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Testing

• Tests pass locally (pytest tests/)
• Added new tests for new features
• Tested manually (describe below)
• No regressions in existing functionality

Manual Testing:
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Performance Impact

• No performance impact
• Improves performance
• May impact performance (explain below)

Documentation

• Updated relevant documentation
• Added code comments for complex logic
• Updated CHANGELOG (if applicable)
• Added/updated docstrings

Checklist

• My code follows the project's style guidelines
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

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