feat: upload creativos, PMax formats, portada IG/FB y seguimiento con notas

Permite subir media sin URL; previews Google PMax por ratio; calendario anual estilo Miia con filtros IG/FB y LinkedIn; seguimiento con selector de fechas, KPIs y cuadro de notas.

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

src/app/api/creatives/route.ts

@@ -11,7 +11,7 @@ import {
 } from '@/lib/agency';
 
 const SELECT =
-  'id,title,status,channel,placement,format,headline,primary_text,description,cta,media_url,brand_name,landing_url,mime_type,bytes,created_at,updated_at';
+  'id,title,status,channel,placement,format,headline,primary_text,description,cta,media_url,brand_name,landing_url,storage_path,mime_type,bytes,created_at,updated_at';
 
 const CHANNELS = new Set([
   'meta_ads',
@@ -31,6 +31,12 @@ const FORMATS = new Set([
   'story',
   'rsa',
   'pmax',
+  'pmax_landscape',
+  'pmax_square',
+  'pmax_portrait',
+  'pmax_vertical',
+  'pmax_logo',
+  'youtube',
   'other',
 ]);
 const ALLOWED_STATUS = new Set(['draft', 'in_review', 'approved', 'rejected']);