fix: Ads Meta conv/CPL = Clientes potenciales (sin sumar acciones solapadas)

Las creatividades inflaban ~3× al sumar lead + lead_grouped + registration.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/lib/ad-creatives-meta.ts

@@ -2,6 +2,7 @@
 
 import { resolveMetaAccessToken } from '@/lib/ads-discovery';
 import { serviceHeaders, supabaseUrl } from '@/lib/agency';
+import { leadFromMetaActions } from '@/lib/meta-leads';
 
 const META_GRAPH = 'https://graph.facebook.com/v21.0';
 
@@ -434,18 +435,9 @@ async function fetchMetaAdLevelInsights(
     for (const row of raw.data || []) {
       const adId = str(row.ad_id);
       if (!adId) continue;
-      let conversions = 0;
-      for (const a of row.actions || []) {
-        const t = (a.action_type || '').toLowerCase();
-        if (
-          t === 'offsite_conversion.fb_pixel_complete_registration' ||
-          t === 'lead' ||
-          t === 'onsite_conversion.lead_grouped' ||
-          t.includes('complete_registration')
-        ) {
-          conversions += n(a.value);
-        }
-      }
+      // Same metric as ad_daily / Ads Manager «Clientes potenciales»
+      // (do not sum lead + lead_grouped + registration — they overlap ~3×).
+      const conversions = leadFromMetaActions(row.actions);
       out.push({
         adId,
         adName: str(row.ad_name),