Record presentation view stats on opportunity records fast

Presentation views aren't recorded on opportunities, so reps lack viewing context. Add viewing metrics to opportunity records so reps prepare follow-ups within minutes.

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Overview

When presentation engagement isn't attached to opportunities, reps lack context and outreach feels generic. This flow writes unique views, slide counts, last-view timestamps, and viewing minutes to the opportunity presentation record so sales ops and reps get actionable context within minutes.