Story 8.2: Customer List View

**Story ID:** 8-2-customer-list-view **Epic:** Epic 8 - Agent Customer Management Hub **Status:** ready-for-dev **Priority:** P1 (Foundation - Week 2) **Estimated Effort:** 0.5 days (backend endpoint + integration) **Context:** docs/sprint-artifacts/stories/8-2-customer-list-view.context.xml