fix: prevent ENOENT on scheduled reel publishing when local file deleted early

- facebook.ts: use resolvePublicUrl + getMediaBuffer for reels so missing local files fall back to HTTP fetch.
- scheduler.ts: only delete local video files after the last pending scheduled post for that postId is published.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

server/services/facebook.ts

@@ -72,11 +72,9 @@ export class FacebookService {
         throw new Error('Reels require a video media');
       }
 
-      // Upload video bytes directly — Facebook cannot fetch local/Docker URLs
-      const localPath = videoMedia.originalUrl.startsWith('/')
-        ? path.join(process.cwd(), videoMedia.originalUrl)
-        : videoMedia.originalUrl;
-      const nodeBuffer = await fs.promises.readFile(localPath);
+      // Use public URL so getMediaBuffer can fetch via HTTP if local file is missing
+      const publicUrl = resolvePublicUrl(videoMedia.originalUrl);
+      const nodeBuffer = await this.getMediaBuffer(publicUrl);
       return await this.publishVideoFromBuffer(page, nodeBuffer, post.content);
     } else {
       // Default to feed

server/services/scheduler.ts

@@ -125,12 +125,18 @@ export class SchedulerService {
       status: "published",
     });
 
-    // Delete local video files immediately after successful publishing
+    // Delete local video files only when no other unpublished scheduled posts reference them
     for (const mediaItem of mediaList) {
       if (mediaItem.type === 'video' && mediaItem.cloudinaryPublicId) {
         try {
-          await storageService.deleteMedia(mediaItem.cloudinaryPublicId, mediaItem.userId, 'video');
-          console.log(`[Scheduler] Deleted local video file for media ${mediaItem.id}`);
+          const remainingScheduled = await storage.getScheduledPostsByPost(post.id);
+          const hasPending = remainingScheduled.some(sp => !sp.publishedAt);
+          if (!hasPending) {
+            await storageService.deleteMedia(mediaItem.cloudinaryPublicId, mediaItem.userId, 'video');
+            console.log(`[Scheduler] Deleted local video file for media ${mediaItem.id}`);
+          } else {
+            console.log(`[Scheduler] Kept local video file for media ${mediaItem.id} (pending scheduled posts still exist)`);
+          }
         } catch (err) {
           console.warn(`[Scheduler] Failed to delete local video file for media ${mediaItem.id}:`, err);
         }