feat: add dashboard trend charts

docs/development/roadmap.md

@@ -41,12 +41,14 @@ Implementation note:
 Objective: turn parsed DMARC data into administrator-friendly reports.
 
 Priority tasks:
-- Add time-series charts for volume and compliance.
 - Add per-domain daily rollups.
 - Add "what changed" summaries for newly observed senders and sudden compliance drops.
 - Add exportable reports for a domain and date range.
 - Add actionable recommendations for common SPF, DKIM, and DMARC failure patterns.
 
+Delivered:
+- Dashboard time-series charts show daily mail volume, compliance rate, and failure rate.
+
 Quality bar:
 - A domain owner can understand who sends mail as their domain, which sources fail, and what to fix next.
 

docs/milestones.md

@@ -77,8 +77,10 @@ Status: In progress
 
 Goal: convert raw DMARC data into useful operational reporting.
 
-Planned:
+Delivered:
 - Dashboard trend charts for volume, compliance rate, and failure rate.
+
+Planned:
 - Top sender/source reports with pass/fail breakdowns.
 - Per-domain report timeline and daily rollups.
 - Exportable reports for a selected domain and date range.

docs/todo.md

@@ -128,16 +128,16 @@ This file tracks the specific implementation tasks for each milestone of the DMA
 ## Milestone 4: Dashboard Enhancements
 
 ### Data Visualization
-- [ ] Integrate Chart.js library
-- [ ] Create time-series charts for DMARC compliance
-- [ ] Add volume charts for email traffic
+- [x] Integrate Chart.js library
+- [x] Create time-series charts for DMARC compliance
+- [x] Add volume charts for email traffic
 - [ ] Implement sender breakdown visualizations
 - [ ] Create policy distribution charts
 
 ### Dashboard Widgets
 - [ ] Create compliance rate summary widget
 - [ ] Add enforcement rate widget
-- [ ] Implement email volume trends widget
+- [x] Implement email volume trends widget
 - [ ] Create top sender sources widget
 - [ ] Add alert status summary (for later integration)