Fix systematic errors in pagination, sucursal warnings, and fatal count() errors across multiple modules

classes/database-manager.class.php

@@ -40,11 +40,13 @@ class DatabaseManager {
             $config = SystemConfig::getMasterDatabaseConfig();
             
             try {
+                $port = $config['port'] ?? 3306;
                 $this->masterConnection = new mysqli(
                     $config['host'],
                     $config['user'],
                     $config['password'],
-                    $config['database']
+                    $config['database'],
+                    (int)$port
                 );
                 
                 if ($this->masterConnection->connect_error) {
@@ -54,6 +56,7 @@ class DatabaseManager {
                 $this->masterConnection->set_charset($config['charset']);
             } catch (Exception $e) {
                 // Crear una conexión falsa para desarrollo sin BD
+                // die("CRITICAL DB ERROR: " . $e->getMessage()); // Debug removed
                 error_log("WARNING: No hay conexión a base de datos. Usando modo desarrollo. " . $e->getMessage());
                 $this->masterConnection = new MockDatabase();
             }