fix: better handling of deletes and links

src/main/engine/MediaEngine.ts

@@ -507,7 +507,7 @@ export class MediaEngine extends EventEmitter {
   async deleteMedia(id: string): Promise<boolean> {
     const db = getDatabase().getLocal();
     const existing = await db.select().from(media).where(eq(media.id, id)).get();
-    
+
     if (!existing) {
       return false;
     }
@@ -529,6 +529,10 @@ export class MediaEngine extends EventEmitter {
     // Delete thumbnails
     await this.deleteThumbnails(id);
 
+    // Delete post-media links (cascade cleanup)
+    const { postMedia } = await import('../database/schema');
+    await db.delete(postMedia).where(eq(postMedia.mediaId, id));
+
     await db.delete(media).where(eq(media.id, id));
 
     this.emit('mediaDeleted', id);

src/main/engine/PostEngine.ts

@@ -451,7 +451,7 @@ export class PostEngine extends EventEmitter {
     const db = getDatabase().getLocal();
     const client = getDatabase().getLocalClient();
     const existing = await db.select().from(posts).where(eq(posts.id, id)).get();
-    
+
     if (!existing) {
       return false;
     }
@@ -469,6 +469,25 @@ export class PostEngine extends EventEmitter {
     await db.delete(postLinks).where(eq(postLinks.sourcePostId, id));
     await db.delete(postLinks).where(eq(postLinks.targetPostId, id));
 
+    // Delete post-media links and update media sidecars
+    const { postMedia } = await import('../database/schema');
+    const { getMediaEngine } = await import('./MediaEngine');
+    const linkedMediaResult = await db.select().from(postMedia).where(eq(postMedia.postId, id));
+    const linkedMedia = Array.isArray(linkedMediaResult) ? linkedMediaResult : [];
+
+    // Remove this post from each linked media's sidecar
+    const mediaEngine = getMediaEngine();
+    for (const link of linkedMedia) {
+      const media = await mediaEngine.getMedia(link.mediaId);
+      if (media && media.linkedPostIds) {
+        const updatedLinkedPostIds = media.linkedPostIds.filter(pid => pid !== id);
+        await mediaEngine.updateMedia(link.mediaId, { linkedPostIds: updatedLinkedPostIds });
+      }
+    }
+
+    // Delete post-media junction entries
+    await db.delete(postMedia).where(eq(postMedia.postId, id));
+
     // Delete from database
     await db.delete(posts).where(eq(posts.id, id));