Summary

• add a founder-only permanent delete action for any business, with exact-name confirmation for all businesses and an additional DELETE REAL CUSTOMER confirmation for real customers
• expose permanent delete inside managed admin surfaces instead of as a primary triage action by adding a shared permanent-delete card to the board/detail flows and updating the founder cleanup chooser
• keep archive and bulk delete behavior intact while making local-only cleanup explicit and covering the new delete rules with focused lifecycle/auth/UI tests

Validation

• npm run env:check ✅
• npm run preflight:providers ✅
• npm run typecheck ✅
• npm run lint ✅
• npm run test ✅
• npm run build ✅