feat(economy): update content creation documentation and improve editor validation

src/commands/messages/alliaces/editDisplayComponent.ts

@@ -37,7 +37,7 @@ const btns = (disabled = false) => ([
 const isValidUrl = isValidUrlOrVariable;
 
 const validateContent = (content: string | undefined | null): string => {
-    if (!content || typeof content !== 'string') return "Sin contenido";
+    if (!content) return "Sin contenido";
     const cleaned = content.trim();
     if (!cleaned) return "Sin contenido";
     if (cleaned.length > 4000) return cleaned.slice(0, 3997) + "...";

src/commands/messages/game/offerCreate.ts

@@ -30,7 +30,7 @@ export const command: CommandMessage = {
     const guildId = message.guild!.id;
     const state: OfferState = { enabled: true, price: {}, perUserLimit: null, stock: null, metadata: {} };
 
-    const editorMsg = await message.channel.send({
+    const editorMsg = await (message.channel as any).send({
       content: `🛒 Editor de Oferta (crear)`,
       components: [
         { type: 1, components: [