[prathshenoy]

Summary

What:

• Define how batches of individual build issues are attributed to projects.
• Add a noop implementation that leaves existing project associations untouched.

Why:

• Establish the contract needed to show open issues by project. A project-specific view needs to know which individual failures affect that project; a queue-wide issue list does not provide those relationships.
• Distinguish projects that were assessed from projects that were not. Later attribution processing needs that boundary to remove outdated associations without clearing projects a build did not reassess.

Test Plan

• Add unit tests.

Revert Plan

• Revert this PR. No runtime behavior or persisted data changes.

Issue Links

• CODEM-607

Stack

1. feat(stovepipe): Define issue project attribution #994