Pdn secondary ground#9521

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Bbn08 wants to merge 3 commits intoThe-OpenROAD-Project:masterfrom

Bbn08:pdn-secondary-ground

Commits on Feb 23, 2026

pdn: add secondary_ground support and fix secondary power net ordering
Bbn08
committed
pdn: add run() spanning buildGrids+writeToDb, disable tests pending defok
Bbn08
committed
pdn: refactor duplicated secondary net logic into helpers
Bbn08
committed