Verify commit d9c759aa implementation is present

[Copilot]

The referenced commit created BBChop/analysis/dplot.py and 37 other project foundation files in 2008.

Findings

All files from commit d9c759a already exist in the repository:

• BBChop/analysis/dplot.py - density plotting visualization for binary search algorithms
• All source, test, documentation, and analysis files match commit content
• Only difference: copyright headers added in subsequent commits

Changes

None required. Repository already contains complete implementation from referenced commit.

Note: PR title "Update authentication methods" appears unrelated to the referenced commit which implements analysis and plotting utilities for the BBChop bisection algorithm.

Original prompt

Reference: d9c759a

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