Add Facebook publishing functionality to schedule posts

Integrate Facebook Graph API for publishing scheduled posts, including media. Update storage to handle post-media relationships and add new schema types.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: ae4037a0-2a6f-4530-9bac-79b543286bda
Replit-Commit-Checkpoint-Type: intermediate_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/397bca8c-984f-43ff-841a-10897aeb8140/ae4037a0-2a6f-4530-9bac-79b543286bda/BuArSJC

server/storage.ts

@@ -3,6 +3,7 @@ import {
   socialPages, 
   media, 
   posts, 
+  postMedia,
   scheduledPosts,
   aiGenerations,
   cloudinaryConfig,
@@ -15,6 +16,7 @@ import {
   type InsertMedia,
   type Post,
   type InsertPost,
+  type PostMedia,
   type ScheduledPost,
   type InsertScheduledPost,
   type AiGeneration,
@@ -48,6 +50,7 @@ export interface IStorage {
   getMediaById(id: string): Promise<Media | undefined>;
   createMedia(media: InsertMedia): Promise<Media>;
   deleteMedia(id: string): Promise<void>;
+  getPostMedia(postId: string): Promise<PostMedia[]>;
 
   // Posts
   getPosts(userId: string): Promise<Post[]>;
@@ -152,6 +155,10 @@ export class DatabaseStorage implements IStorage {
     await db.delete(media).where(eq(media.id, id));
   }
 
+  async getPostMedia(postId: string): Promise<PostMedia[]> {
+    return await db.select().from(postMedia).where(eq(postMedia.postId, postId));
+  }
+
   // Posts
   async getPosts(userId: string): Promise<Post[]> {
     return await db.select().from(posts).where(eq(posts.userId, userId)).orderBy(desc(posts.createdAt));