Triggered by clicking Complete on any estimate detail tab. Searches the org's HousecallPro account for matching customers (by phone, email, or name) and lets the user confirm the match — or create a new customer if none of the candidates fit. Critical for Phase 1.5 because mismatches in HCP are awkward to undo.
Confirm the customer in your HCP account before pushing this estimate. We'll attach to the selected customer or create a new one.