Fix leads filter: use FIND(gad_campaignid) in attr_referer instead of formula field; remove catalog Leads Lake update

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

airtable_client.py

@@ -334,14 +334,14 @@ class AirtableClient:
     def get_leads_this_month_gads(self, campaign_id: str) -> tuple[int, list[str]]:
         """
         Leads del mes actual para una campaña de Google Ads.
-        Filtra por GoogleCampaignID (extraído de attr_referer),
-        attr_utm_source pmx/google y attr_utm_medium paid_search.
+        Filtra buscando gad_campaignid=ID directamente en attr_referer,
+        más attr_utm_medium paid_search y mes actual.
         """
         now = datetime.now()
         mes_inicio = f"{now.year}-{now.month:02d}-01"
         formula = (
             f"AND("
-            f"{{GoogleCampaignID}}='{campaign_id}',"
+            f"FIND('gad_campaignid={campaign_id}',{{attr_referer}}),"
             f"{{attr_utm_medium}}='paid_search',"
             f"{{creado}}>='{mes_inicio}'"
             f")"
@@ -404,6 +404,3 @@ class AirtableClient:
         ids = [r["id"] for r in records]
         return len(ids), ids
 
-    def update_campaign_leads_lake(self, campaign_airtable_id: str, lead_ids: list[str]) -> None:
-        """Actualiza el campo 'Leads Lake' de una campaña en Google Ads Campaigns."""
-        self.campaigns.update(campaign_airtable_id, {"Leads Lake": lead_ids})