Auto-populate package source mappings for darc-* feeds#5319

Draft

Copilot wants to merge 3 commits intomainfrom

copilot/fix-fe364ea6-b36d-46ab-ad9d-1569d1e58a27

Commits on Sep 29, 2025

Initial plan
Copilot
committed
Implement package source mappings for darc feeds - working but whitespace issue

Copilot
and
mmitche
committed
Complete implementation of package source mappings for darc feeds with working tests

Copilot
and
mmitche
committed