correlation implemented

[m-hajjo]

Description

Brief description of the changes in this PR.

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Related Issues

Fixes #(issue number) or relates to #(issue number)

Changes Made

• Closes The coordination harness is test-only: the documented multi-contract scenarios cannot be exercised against the real contract #446
• Closes correlation_event_topics accepts and discards the correlation id: the propagation helper is a no-op #447
• Closes get_economic_exposure iterates only canonical severities: custom-severity exposure is absent from the aggregate view #448
• Closes get_config_count counts only the canonical map: registered custom severities are invisible to the count #449

Testing

Describe the testing performed to validate these changes:

• Unit tests added/updated
• Integration tests added/updated
• Manual testing performed

Checklist

• My code follows the project's style guidelines
• I have performed a self-review of my own code
• I have commented complex logic
• I have updated relevant documentation
• 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
• My changes do not introduce new warnings

Screenshots (if applicable)

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[usmanimamu17-create]

Nice work, merging!