fix: skip Teams messages older than 24h to prevent old channel messages surfacing

connector_m365.go

@@ -754,6 +754,16 @@ func (c *M365Connector) pollTeams() bool {
 				continue
 			}
 
+			// Skip messages older than 24h — prevents old channel messages from surfacing
+			if msg.ComposeTime != "" {
+				if t, err := time.Parse(time.RFC3339Nano, msg.ComposeTime); err == nil {
+					if time.Since(t) > 24*time.Hour {
+						log.Printf("[m365] Skipping old Teams message from %s (age: %s)", msg.DisplayName, time.Since(t).Round(time.Minute))
+						continue
+					}
+				}
+			}
+
 			content := stripHTMLTags(msg.Content)
 			if content == "" {
 				continue
@@ -812,6 +822,7 @@ type teamsMsg struct {
 	From        string
 	DisplayName string
 	Content     string
+	ComposeTime string
 }
 
 func (c *M365Connector) fetchTeamsMessages(token, convID string) []teamsMsg {
@@ -854,6 +865,7 @@ func (c *M365Connector) fetchTeamsMessages(token, convID string) []teamsMsg {
 			From:        m.From,
 			DisplayName: m.IMDisplayName,
 			Content:     m.Content,
+			ComposeTime: m.ComposeTime,
 		})
 	}