新增签到日历筛选

Co-Authored-By: Claude <noreply@anthropic.com>

web.go

@@ -88,6 +88,14 @@ func registerAPIRoutes(r gin.IRouter, store *store, mapTileCacheDir string) {
 		total, err := store.CountSigns(opts)
 		writeListResponseWithTotal(c, rows, opts, total, err, signDTO)
 	})
+	r.GET("/signs/daily", func(c *gin.Context) {
+		opts, ok := parseListOptions(c)
+		if !ok {
+			return
+		}
+		rows, err := store.CountSignsByDay(opts)
+		writeListResponse(c, rows, opts, err, signDayCountDTO)
+	})
 	r.GET("/text-messages", func(c *gin.Context) {
 		opts, ok := parseListOptions(c)
 		if !ok {
@@ -617,6 +625,10 @@ func signDTO(row signRecord) gin.H {
 	return gin.H{"id": row.ID, "node_id": row.NodeID, "long_name": ptrString(row.LongName), "short_name": ptrString(row.ShortName), "sign_text": row.SignText, "sign_time": row.SignTime}
 }
 
+func signDayCountDTO(row signDayCount) gin.H {
+	return gin.H{"date": row.Date, "count": row.Count}
+}
+
 func textMessageDTO(row textMessageRecord) gin.H {
 	return gin.H{"id": row.ID, "from_id": row.FromID, "from_num": row.FromNum, "packet_id": ptrInt64(row.PacketID), "text": ptrString(row.Text), "topic": row.Topic, "channel_id": ptrString(row.ChannelID), "created_at": row.CreatedAt, "mqtt_remote_host": ptrString(row.MQTTRemoteHost), "content_json": row.ContentJSON}
 }