fix: exclude sent messages from report/dashboard charts to avoid data skew

frontend/src/features/reports/DashboardLineChart.vue

@@ -1,5 +1,5 @@
 <template>
-  <LineChart :data="data" index="date" :categories="['New conversations', 'Resolved conversations', 'Messages sent']"
+  <LineChart :data="data" index="date" :categories="['New conversations', 'Resolved conversations']"
     :x-formatter="xFormatter" :y-formatter="yFormatter" />
 </template>
 

frontend/src/views/reports/DashboardView.vue

@@ -138,8 +138,6 @@ const getDashboardCharts = async () => {
           chartData.value.new_conversations.find((item) => item.date === date)?.count || 0,
         'Resolved conversations':
           chartData.value.resolved_conversations.find((item) => item.date === date)?.count || 0,
-        'Messages sent':
-          chartData.value.messages_sent.find((item) => item.date === date)?.count || 0
       }))
 
       chartData.value.status_summary = resp.data.data.status_summary || []

internal/conversation/queries.sql

@@ -311,26 +311,10 @@ status_summary AS (
         GROUP BY 
             s.name
     ) agg
-),
-messages_sent as (
-    SELECT json_agg(row_to_json(agg)) AS data
-    FROM (
-        SELECT
-            TO_CHAR(created_at::date, 'YYYY-MM-DD') AS date,
-            COUNT(*) AS count
-        FROM
-            conversation_messages c
-        WHERE status = 'sent' AND 1=1 %s
-        GROUP BY
-            date
-        ORDER BY
-            date
-    ) agg
 )
 SELECT json_build_object(
     'new_conversations', (SELECT data FROM new_conversations),
     'resolved_conversations', (SELECT data FROM resolved_conversations),
-    'messages_sent', (SELECT data FROM messages_sent),
     'status_summary', (SELECT data FROM status_summary)
 ) AS result;