Phase 11's third sub-area (reporting/analytics dashboards), per explicit user direction. Backend-first scope (four read-only aggregation endpoints wiring up the pre-scaffolded platform/reports module), following the same backend-before-frontend pattern already established for 010/011/014 this session — a supporthub-web dashboard UI is a separate, not-yet-started follow-on. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>