diff --git a/app/(app)/(tabs)/tablon/[id].tsx b/app/(app)/(tabs)/tablon/[id].tsx
index 7fe8e2d..fed539b 100644
--- a/app/(app)/(tabs)/tablon/[id].tsx
+++ b/app/(app)/(tabs)/tablon/[id].tsx
@@ -132,7 +132,7 @@ export default function PostDetailScreen() {
             ) : null}
 
             <View className="flex-row items-center gap-2">
-              {post.author.avatar_url ? (
+              {post.author?.avatar_url ? (
                 <Image
                   source={{ uri: post.author.avatar_url }}
                   contentFit="cover"
@@ -141,7 +141,7 @@ export default function PostDetailScreen() {
               ) : (
                 <View className="w-8 h-8 rounded-full bg-nun-sand items-center justify-center">
                   <Text className="text-xs font-semibold text-nun-muted">
-                    {[post.author.name, post.author.surname]
+                    {[post.author?.name, post.author?.surname]
                       .filter(Boolean)
                       .map((w) => w![0])
                       .join('')
@@ -151,7 +151,7 @@ export default function PostDetailScreen() {
                 </View>
               )}
               <Text className="text-xs text-nun-muted flex-1" numberOfLines={1}>
-                {[post.author.name, post.author.surname].filter(Boolean).join(' ') || '—'}
+                {[post.author?.name, post.author?.surname].filter(Boolean).join(' ') || '—'}
                 {post.published_at ? ` · ${formatRelativeTime(post.published_at)}` : ''}
               </Text>
             </View>
diff --git a/components/PostCard.tsx b/components/PostCard.tsx
index 8117ae8..3194e8d 100644
--- a/components/PostCard.tsx
+++ b/components/PostCard.tsx
@@ -32,7 +32,7 @@ export function PostCard({ post, onPress }: Props) {
   const { myReaction, counts, loading, toggle } = usePostReactions(post.id);
   const thumbSource = post.cover_image_url ? { uri: getThumbUrl(post.cover_image_url) } : null;
   const authorName =
-    [post.author.name, post.author.surname].filter(Boolean).join(' ') || '—';
+    [post.author?.name, post.author?.surname].filter(Boolean).join(' ') || '—';
   const publishedAt = post.published_at ? formatRelativeTime(post.published_at) : '';
 
   return (
diff --git a/lib/supabase/queries/posts.ts b/lib/supabase/queries/posts.ts
index cb46bad..ced7396 100644
--- a/lib/supabase/queries/posts.ts
+++ b/lib/supabase/queries/posts.ts
@@ -7,19 +7,19 @@ type ProfileSnippet = { name: string | null; surname: string | null };
 type PostAuthor = { id: string; name: string | null; surname: string | null; avatar_url: string | null };
 
 export type PostWithAuthor = Tables<'posts'> & {
-  author: ProfileSnippet;
+  author: ProfileSnippet | null;
   comments_count: number;
   rating_average: number; // 0 when the post has no ratings yet
   rating_count: number;
 };
-export type PostDetail = Tables<'posts'> & { author: PostAuthor };
+export type PostDetail = Tables<'posts'> & { author: PostAuthor | null };
 export type PostCursor = { published_at: string; id: string };
 
 // PostgREST reverse-embed: post_comments(count) yields [{ count }] per post and
 // post_ratings(rating) yields the rating rows, so the feed's comment and rating
 // aggregates ride on the same query (no N+1).
 type PostRow = Tables<'posts'> & {
-  author: ProfileSnippet;
+  author: ProfileSnippet | null;
   post_comments: { count: number }[];
   post_ratings: { rating: number }[];
 };
@@ -33,9 +33,14 @@ export async function listPublishedPosts({
   pageSize?: number;
   client?: SupabaseClient<Database>;
 }): Promise<{ rows: PostWithAuthor[]; nextCursor: PostCursor | null }> {
+  // Author is embedded through profiles_public: RLS on profiles only lets staff
+  // read their own row, so embedding profiles directly returns author: null for
+  // every post they did not write.
   let query = client
     .from('posts')
-    .select('*, author:profiles!author_id(name, surname), post_comments(count), post_ratings(rating)')
+    .select(
+      '*, author:profiles_public!author_id(name, surname), post_comments(count), post_ratings(rating)',
+    )
     .eq('status', 'published')
     .is('deleted_at', null)
     .order('published_at', { ascending: false })
@@ -79,7 +84,7 @@ export async function listPublishedPosts({
 export async function getPostById(id: string): Promise<PostDetail> {
   const { data, error } = await supabase
     .from('posts')
-    .select('*, author:profiles!author_id(id, name, surname, avatar_url)')
+    .select('*, author:profiles_public!author_id(id, name, surname, avatar_url)')
     .eq('id', id)
     .is('deleted_at', null)
     .single();