Simplify README.md: Remove duplicate and extraneous content

[Copilot]

README.md contained duplicate information and developer-focused content better suited for other documentation.

Changes

• Removed Update section - Already documented in User Guide
• Removed duplicate Self-Validation section - Consolidated into single comprehensive section with test table
• Removed Development section - Build/test/package instructions fully covered in CONTRIBUTING.md

Reduces README.md by 74 lines while maintaining all essential user-facing information. References to specialized documentation (User Guide, CONTRIBUTING.md) preserved.

Original prompt

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This section details on the original issue you should resolve

<issue_title>[Feature]: Simplify README.md</issue_title>
<issue_description>### Problem Statement

The README.md has some extraneous information that clutters the content.

Proposed Solution

The README.md can probably remove the following information:

• Update - we can assume users will handle tool updating themselves, or read the user guide.
• Self Validation - the information about self-validation appears to be duplicated, and only needs to be covered once
• Development - users will use the CONTRIBUTING.md if they want to build the project

Also look for other improvements to the README.md to remove superfluous or duplicate information already covered by other referenced documentation. The primary purpose of the README.md is for users, with references to other documents for other purposes.

Alternatives Considered

No response

Additional Context

No response

Priority

Medium - Would improve workflow

Contribution

• I would be willing to submit a PR for this feature

Code of Conduct

• I agree to follow this project's Code of Conduct</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes [Feature]: Simplify README.md #52

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