Rename code_owner_reviewer_assignment_strategy to reviewer_assignment_strategy

Marc Shawrequested to merge
ms/rename-reviewer-assignment-strategy-column into master

Summary

Renames the code_owner_reviewer_assignment_strategy column and all associated model references to the more generic reviewer_assignment_strategy. This prepares the reviewer assignment infrastructure to be reused by DAP (Duo Agent Platform) and other approval types beyond CODEOWNERS.

What does this MR do?

  • Migration: Renames project_settings.code_owner_reviewer_assignment_strategy to reviewer_assignment_strategy
  • Model: Renames constant CODE_OWNER_REVIEWER_ASSIGNMENT_STRATEGIES to REVIEWER_ASSIGNMENT_STRATEGIES, updates the enum and attribute declarations
  • Method: Renames code_owner_reviewer_auto_assignment_enabled? to reviewer_auto_assignment_enabled?
  • Specs/config: Updates all references in specs and API attributes YAML

Why?

The DAP epic (&20711 - "DAP-Powered Intelligent Reviewer Assignment") depends on the assignment infrastructure from Epic &20708 ("Native CODEOWNERS Reviewer Auto-Assignment"). DAP will add its own strategy (e.g., duo_intelligent) to select optimal individual reviewers from approval groups. By making the column/enum generic now, we avoid a breaking rename later.

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