[WIP] Conflict between isort and black due to different line lengths

[Copilot]

Plan to fix isort/black line length conflict:

• Explore repository structure and understand the issue
• Identify configuration files (.pre-commit-config.yaml and pyproject.toml)
• Confirm the issue: isort defaults to 79 chars, black defaults to 88 chars
• Create test case demonstrating the conflict
• Add [tool.isort] configuration to pyproject.toml with line_length = 88
• Test that the configuration resolves the conflict
• Verify both tools are satisfied with current codebase
• Run tests to ensure no regressions

Issue: isort and black have conflicting line length defaults (79 vs 88 characters), causing pre-commit failures when both tools format the same import lines differently.

Solution: Configure isort's line_length to match black's default of 88 characters in pyproject.toml.

Testing: Verified that with the new configuration:

• Lines between 79-88 characters are no longer broken by isort
• Both tools produce compatible formatting results
• All existing tests pass
• Current codebase satisfies both linters

Fixes #14.

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