Give your agent the Diff vendor pricing tiers claw

Snapshots each vendor's public pricing page daily at 07:30 and writes a diff when something material changes. Strips marketing copy and navigation churn and surfaces tier price moves, new tiers, and quietly removed features against the prior page. New and removed tiers are called out separately because both signal a vendor's roadmap thinking procurement should weigh before the next renewal. Quiet runs save state and send nothing.