docs: add performance benchmarks for Titan-26 architecture

[ANU5565]

Is your feature request related to a problem? Please describe.

Description

The repository currently lacks a centralized documentation file summarizing the performance of the Titan-26 architecture against baseline models. While the README mentions benchmark results, a dedicated docs/BENCHMARKS.md file would provide better clarity for contributors and researchers.

Goal

• Create docs/BENCHMARKS.md.
• Include the summary tables comparing HRF Ultimate against SVM, Random Forest, and XGBoost.
• Add a brief explanation of the "HRF Margin" column to help users interpret the performance improvements.

Proposed Scope

• Consolidate performance data from Phase 3 Out-Of-Fold (OOF) validation.
• Format as a clean, scannable Markdown table.

Describe the solution you'd like

The repository currently lacks a centralized documentation file summarizing the performance of the Titan-26 architecture against baseline models. While the README mentions benchmark results, a dedicated docs/BENCHMARKS.md file would provide better clarity for contributors and researchers.