fix(servidor-dashboard): show DB connection count on server cards

- GetServidor: query conx_count per server with GROUP BY and attach to response
- servidor_dashboard.html: use conx_count from API (fallback to _conexiones.length)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

resources/views/servidor_dashboard.html

@@ -77,7 +77,7 @@
               <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 7v10c0 2.21 3.582 4 8 4s8-1.79 8-4V7M4 7c0 2.21 3.582 4 8 4s8-1.79 8-4M4 7c0-2.21 3.582 4 8 4"/>
             </svg>
             <span class="text-sm text-slate-600">
-              <span class="font-bold text-blue-600" x-text="servidor._conexiones?.length || 0"></span>
+              <span class="font-bold text-blue-600" x-text="servidor.conx_count ?? servidor._conexiones?.length ?? 0"></span>
               conexiones BD
             </span>
           </div>

rest/controllers/servidor_controller.go

@@ -63,9 +63,42 @@ func GetServidor(c *fiber.Ctx) error {
 			"error":   err.Error(),
 		})
 	}
+
+	// Build connection count map per server
+	type conxCount struct {
+		ServidorID uint  `gorm:"column:servidor_id"`
+		Count      int64 `gorm:"column:count"`
+	}
+	var counts []conxCount
+	serverIDs := make([]uint, len(records))
+	for i, s := range records {
+		serverIDs[i] = s.ID
+	}
+	if len(serverIDs) > 0 {
+		app.Http.Database.DB.Table("conx_db").
+			Select("servidor_id, count(*) as count").
+			Where("servidor_id IN ? AND deleted_at IS NULL", serverIDs).
+			Group("servidor_id").
+			Scan(&counts)
+	}
+	countMap := make(map[uint]int64)
+	for _, cc := range counts {
+		countMap[cc.ServidorID] = cc.Count
+	}
+
+	// Attach conx_count to each record
+	type servidorWithCount struct {
+		models.Servidor
+		ConxCount int64 `json:"conx_count"`
+	}
+	enriched := make([]servidorWithCount, len(records))
+	for i, s := range records {
+		enriched[i] = servidorWithCount{Servidor: s, ConxCount: countMap[s.ID]}
+	}
+
 	totalPages := int(math.Ceil(float64(total) / float64(limit)))
 	return c.JSON(fiber.Map{
-		"registros":  records,
+		"registros":  enriched,
 		"total":      total,
 		"totalPages": totalPages,
 		"page":       page,