send_consentimiento: read wa template from lab_config instead of hardcoding

Was sending 'consentimiento_turno' (plain text fallback) while the
configured template is 'consentimiento_turno_v2'. Now reads
turnero_wa_template and turnero_wa_lang from lab_config, matching
the same logic used in create_turno.php (kiosk).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

modules/turnero/api/send_consentimiento.php

@@ -84,6 +84,15 @@ function generarUuid(): string
     );
 }
 
+// ── Leer config de WhatsApp (igual que create_turno.php) ─────
+$stmtCfg = $pdo->prepare(
+    "SELECT clave, valor FROM lab_config WHERE clave IN ('turnero_wa_template','turnero_wa_lang')"
+);
+$stmtCfg->execute();
+$cfgWA = $stmtCfg->fetchAll(PDO::FETCH_KEY_PAIR);
+$waTemplateName = $cfgWA['turnero_wa_template'] ?? 'consentimiento_turno';
+$waLangFallback = $cfgWA['turnero_wa_lang']     ?? 'es';
+
 $pdo->beginTransaction();
 $consentimientosResultado = [];
 $erroresEnvio = [];
@@ -105,10 +114,10 @@ try {
 
     $wa     = new WhatsAppService('turnero');
     $waMeta = ['canal' => 'turnero'];
-    $waTemplate = 'consentimiento_turno';
+    $waTemplate = $waTemplateName;
     $stmtLang = $pdo->prepare("SELECT language_code FROM message_templates WHERE template_name = ? LIMIT 1");
     $stmtLang->execute([$waTemplate]);
-    $waLang = $stmtLang->fetchColumn() ?: 'es';
+    $waLang = $stmtLang->fetchColumn() ?: $waLangFallback;
 
     $baseUrl = defined('BASE_URL') ? rtrim(BASE_URL, '/') : (
         (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' ? 'https' : 'http')