https://proposals.propin.ai/ weekly 1.0 https://proposals.propin.ai/Proposal weekly 0.8 https://proposals.propin.ai/vdm2026-1 weekly 0.8 https://proposals.propin.ai/mp2026-priority weekly 0.8 https://proposals.propin.ai/mp-proposal weekly 0.8 https://proposals.propin.ai/exhibit-a weekly 0.8 https://proposals.propin.ai/statement-of-work weekly 0.8 https://proposals.propin.ai/mp-agreement weekly 0.8 https://proposals.propin.ai/mp-proposal-regional weekly 0.8