P0 fixes: - P0-01: sticky_session_test.go add context import - P0-02: wire_gen.go add usageLogRepository parameter - P0-03: admin_service_stub_test.go add GetGroupAPIKeyCount - P0-04: admin_basic_handlers_test.go add stubUsageLogRepository P1 fixes: - P1-03: group_handler.go GetStats implement real data query E2E fixes: - Fix API Key path to /api/v1/keys (user endpoint) Documentation: - Update MEMORY.md with latest fixes