Overview Phase 5

Hero KPI tiles populate incrementally as each source tab lands — see the handoff doc's phasing (section 12).

• Content downloads & MQLs from content — sourced once Content & Campaigns is live (this is built — see that tab)
• LinkedIn ER & Instagram reach — sourced once Social lands (Phase 4, gated on rulings 11.5–11.7)
• Webinar attendees / show-up rate — removed from this dashboard's Overview per the Events & Webinars spin-out (Decision 9)