Add seller to inspection event and update tracker

Your tracker rows miss calendar invites, leaving sellers uninformed and ops doing manual follow-up. Adds the seller to the inspection event and marks row so coordinators see updated status same day.

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Overview

Spreadsheet-driven invite misses create manual work and risk no-shows; this flow removes that friction by attaching sellers to their booked inspection and stamping the sheet. Coordinators get accurate status without chasing invites, with visible updates same day.