• resolves Create reference documentation for CVSS decision point groups #690
• resolves Add Decision Point Group docs to References #448

Copilot Summary

This pull request introduces a new "Public Safety Impact" decision table to the SSVC data model, registers it in the object registry, and significantly enhances the documentation for decision points, decision tables, and their mappings. The most important changes are summarized below:

New Decision Table and Registry Updates

• Added a new decision table file public_safety_impact_1_0_0.json defining the "Public Safety Impact" mapping, which categorizes safety impact into minimal or significant based on detailed criteria.
• Registered "Public Safety Impact" (DT_PSI) in the ssvc_object_registry.json, making it available for programmatic use and documentation.

Documentation Improvements

• Added new reference documentation pages for Decision Points, Decision Tables, and Decision Point Groups, providing structured API docs and explanations for these core concepts. [1] [2] [3]
• Updated the code documentation index and navigation to include links to the new documentation pages, improving discoverability. [1] [2]

Decision Point Documentation Enhancements

• Enhanced the documentation for "Human Impact", "Public Safety Impact", and "Utility" decision points by adding executable code blocks that generate mapping diagrams (using Mermaid) and tables, making the relationships and logic more transparent and interactive for users. [1] [2] [3]
• Refined the prose and structure of the "Human Impact" and "Public Safety Impact" decision point docs for clarity and to better explain the compound nature and mapping logic. [1] [2]

Visualization Helper Improvements

• Improved the Mermaid diagram generator in decision_tables/helpers.py to visually separate input and output columns using subgraphs, resulting in clearer and more informative mapping diagrams in the documentation. [1] [2]