feat(creatives): Canva Agua Miia post / story / LinkedIn

Mapea EAHYK-l1SFM, EAHYK9p_MlY y EAHYK_ylNJo por formato y plataforma en RRSS.

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

src/app/api/creative-pipeline/generate/route.ts

@@ -190,6 +190,13 @@ export async function POST(req: NextRequest) {
     );
   }
 
+  const platformFromBody =
+    typeof body.platform === 'string'
+      ? body.platform
+      : calendarPiece?.platform
+        ? String(calendarPiece.platform)
+        : null;
+
   const brief = buildRrssGenerationBrief({
     tenantId,
     clientSlug: tenant?.slug || 'cliente',
@@ -202,6 +209,7 @@ export async function POST(req: NextRequest) {
     notes: notesBase,
     pillar,
     month,
+    platform: platformFromBody,
     scheduledAt:
       typeof body.scheduled_at === 'string' ? body.scheduled_at : null,
     calendarPiece: calendarPiece
@@ -222,9 +230,7 @@ export async function POST(req: NextRequest) {
           hashtags: calendarPiece.hashtags
             ? String(calendarPiece.hashtags)
             : null,
-          platform: calendarPiece.platform
-            ? String(calendarPiece.platform)
-            : 'instagram',
+          platform: platformFromBody || 'instagram',
         }
       : null,
     recentPipeline: (recentRows || []).map((r) => ({