v89.5 — PAR Pipeline delivery fix

ROOT CAUSE: The app-v76.js lazy module loader still imported par-oversight-v64.js with a v89.2 cache key, so the browser could keep serving the older PAR pipeline module despite showing the new version.

FIX: Changed the dynamic module import cache key to v89.5; updated the nested pipeline import and CSS cache key. This activates the compact buttons, modal forms, summary strip and table already implemented in the new pipeline module.

Stage control: PAR cannot select Confirmed Partnership in new opportunities or stage updates; existing confirmed records remain visible and are not deleted. Director approval/backend role enforcement remains pending and should be implemented before production use.

No SQL migration. No financial data changes. Back up files and DB before deployment. Verify in browser and use hard refresh.
