Document configuration decisions

When making configuration changes, especially those involving version specifications or constraints, include explanatory comments with links to relevant issues, PRs, or documentation. This provides context for future maintainers and makes the reasoning behind configuration decisions transparent and traceable.

For dependency versions, document why specific version constraints were chosen:

dependencies:
  - together>=1.1.0  # Use >= for compatibility, see issue #236

For CI/CD matrices, explain version selection rationale:

strategy:
  matrix:
    python-version: ["3.11", "3.12"]  # Dropped 3.10 support, see PR #123

This practice helps team members understand the historical context of configuration decisions and prevents unnecessary changes or confusion during future updates.