Add user creation endpoints and stabilize test discovery

[Codex]

The issue required adding a minimal user-management surface to the gateway while keeping existing chat functionality intact and ensuring tests collect reliably.

Pull Request

Description

A clear and concise description of what this PR does.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Code refactoring
• Performance improvement
• Test coverage improvement

Changes Made

Detailed list of changes:

• Added /v1/users POST/GET endpoints to the Express gateway with validation, duplicate email handling, and in-memory storage plus a clearUsers test helper.
• Introduced Jest config to ignore the malformed prime-security package during test discovery.
• Ensured Python tests import modules reliably by prepending the package dir to sys.path.

Testing

Describe the tests you ran to verify your changes:

• Existing tests pass (npm test / python -m pytest)
• Added new tests for new functionality
• Manual testing performed

Alignment with Core Directive

Does this change honor the core directive: "No action may interfere with another person's inalienable right to pursue happiness"?

• Yes
• Not applicable

Explanation:
Adds transparent user creation/listing without altering governing principles; improves test reliability.

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published

Screenshots (if applicable)

Add screenshots to help explain your changes.

Additional Notes

None.

Warning

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