fix(postgres): get_thread uses recursive CTE — fetches all nested replies not just direct ones

crates/adapters/postgres/src/thought.rs

@@ -116,9 +116,19 @@ impl ThoughtRepository for PgThoughtRepository {
     }
 
     async fn get_thread(&self, id: &ThoughtId) -> Result<Vec<Thought>, DomainError> {
-        sqlx::query_as::<_, ThoughtRow>(&format!(
+        // Recursive CTE: fetches the root thought and all nested replies at any depth.
-            "{THOUGHT_SELECT} WHERE id=$1 OR in_reply_to_id=$1 ORDER BY created_at ASC"
+        sqlx::query_as::<_, ThoughtRow>(
-        ))
+            "WITH RECURSIVE thread AS (
+                SELECT id,user_id,content,in_reply_to_id,in_reply_to_url,ap_id,
+                       visibility,content_warning,sensitive,local,created_at,updated_at
+                FROM thoughts WHERE id = $1
+                UNION ALL
+                SELECT t.id,t.user_id,t.content,t.in_reply_to_id,t.in_reply_to_url,t.ap_id,
+                       t.visibility,t.content_warning,t.sensitive,t.local,t.created_at,t.updated_at
+                FROM thoughts t JOIN thread ON t.in_reply_to_id = thread.id
+            )
+            SELECT * FROM thread ORDER BY created_at ASC",
+        )
         .bind(id.as_uuid())
         .fetch_all(&self.pool)
         .await