feat(calendario): opciones de generación, regenerar y publish IG/FB

Cantidades posts/stories/reels, días, mix mismo día, instrucciones,
regenerar marcadas, texto por slide/guión reel, stories interactivas
y horarios IG/FB separados o iguales.

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

src/app/api/calendar/preview/route.ts

@@ -44,6 +44,8 @@ export async function POST(req: NextRequest) {
   const body = (await req.json().catch(() => ({}))) as {
     month?: string;
     avoid_titles?: string[];
+    gen_options?: Record<string, unknown>;
+    options?: Record<string, unknown>;
   };
   const month = String(body.month || '').slice(0, 7);
   if (!/^\d{4}-\d{2}$/.test(month)) {
@@ -55,6 +57,9 @@ export async function POST(req: NextRequest) {
         .map((t) => t.trim().slice(0, 160))
         .slice(0, 40)
     : [];
+  const genOptions = (body.gen_options || body.options || null) as
+    | Record<string, unknown>
+    | null;
 
   let slug = 'cliente';
   const t = await restGet<{ slug?: string }[]>(
@@ -132,6 +137,7 @@ export async function POST(req: NextRequest) {
     brandbook,
     publishedPosts,
     avoidTitles,
+    genOptions: genOptions || undefined,
   });
 
   return NextResponse.json({