Add follow-up status tracking slice

backlog/tasks/task-19 - Add-campaign-performance-metrics.md

@@ -1,9 +1,10 @@
 ---
 id: TASK-19
 title: Add campaign performance metrics
-status: To Do
+status: In Progress
 assignee: []
 created_date: '2026-06-03 19:15'
+updated_date: '2026-06-05 19:30'
 labels:
   - mvp
   - analytics
@@ -42,3 +43,9 @@ Build the campaign metrics layer that summarizes acquisition progress from Conve
 4. Merge Rybbit API-derived audit activity into the visible analytics where available.
 5. Add empty/error states and verify metrics update after lead, audit, send, and status changes.
 <!-- SECTION:PLAN:END -->
+
+## Implementation Notes
+
+<!-- SECTION:NOTES:BEGIN -->
+Started implementation pass for campaign performance metrics and filters.
+<!-- SECTION:NOTES:END -->