feat: pre-preenche contexto do modal de novo anuncio com a copy existente

A geracao de copy/imagem por IA exigia que o usuario descrevesse o
anuncio do zero. Agora getAdSetDefaultCreative tambem extrai o texto
do criativo de um anuncio ja existente no ad set (headline, mensagem
e descricao) e o AddAdModal usa isso para preencher automaticamente
o campo de contexto, permitindo gerar variacoes no mesmo tom sem
digitar nada.

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

src/components/dashboard/AddAdModal.tsx

@@ -26,6 +26,9 @@ interface CreativeDefaults {
   is_whatsapp: boolean;
   whatsapp_link?: string;
   whatsapp_phone_number?: string;
+  sample_primary_text?: string;
+  sample_headline?: string;
+  sample_description?: string;
 }
 
 export function AddAdModal({
@@ -63,8 +66,17 @@ export function AddAdModal({
         const res = await fetch(`/api/adsets/${adsetId}/creative-defaults`);
         const data = await res.json();
         if (!cancelled && data.success) {
-          setDefaults(data.data);
-          setLink(data.data?.link || '');
+          const d: CreativeDefaults | undefined = data.data;
+          setDefaults(d ?? null);
+          setLink(d?.link || '');
+
+          // Seed do contexto com a copy de um anúncio já existente no ad set,
+          // pra IA gerar variações no mesmo "tom" sem o usuário escrever do zero.
+          const seed =
+            d?.sample_primary_text ||
+            [d?.sample_headline, d?.sample_description].filter(Boolean).join(' — ') ||
+            `Anúncio para a campanha "${campaignName}" (conjunto "${adsetName}")`;
+          setContext((prev) => prev || seed);
         }
       } catch {
         // Segue sem defaults — o usuário ainda pode publicar informando o link.
@@ -76,7 +88,7 @@ export function AddAdModal({
     return () => {
       cancelled = true;
     };
-  }, [adsetId]);
+  }, [adsetId, campaignName, adsetName]);
 
   const generateCopy = async () => {
     if (!context.trim()) {

src/lib/mcp/tools.ts

@@ -251,6 +251,9 @@ export interface AdSetDefaultCreative {
   is_whatsapp: boolean;
   whatsapp_link?: string;
   whatsapp_phone_number?: string;
+  sample_primary_text?: string;
+  sample_headline?: string;
+  sample_description?: string;
 }
 
 interface AdSetDefaultCreativeApiResponse {
@@ -262,12 +265,18 @@ interface AdSetDefaultCreativeApiResponse {
           instagram_actor_id?: string;
           link_data?: {
             link?: string;
+            message?: string;
+            name?: string;
+            description?: string;
             call_to_action?: { type?: string };
           };
         };
         asset_feed_spec?: {
           link_urls?: Array<{ website_url?: string }>;
           call_to_action_types?: string[];
+          bodies?: Array<{ text?: string }>;
+          titles?: Array<{ text?: string }>;
+          descriptions?: Array<{ text?: string }>;
         };
       };
     }>;
@@ -311,6 +320,9 @@ export async function getAdSetDefaultCreative(
       is_whatsapp: isWhatsapp,
       whatsapp_link: isWhatsapp ? linkData?.link || undefined : undefined,
       whatsapp_phone_number: undefined,
+      sample_primary_text: linkData?.message || undefined,
+      sample_headline: linkData?.name || undefined,
+      sample_description: linkData?.description || undefined,
     };
   }
 
@@ -327,6 +339,9 @@ export async function getAdSetDefaultCreative(
       is_whatsapp: isWhatsapp,
       whatsapp_link: isWhatsapp ? link : undefined,
       whatsapp_phone_number: undefined,
+      sample_primary_text: assetFeed.bodies?.[0]?.text || undefined,
+      sample_headline: assetFeed.titles?.[0]?.text || undefined,
+      sample_description: assetFeed.descriptions?.[0]?.text || undefined,
     };
   }