Fix semantic search: query chunks instead of empty parent_chunks table

src/core/db/postgres_db.rs

@@ -4622,13 +4622,13 @@ impl PostgresDb {
         let results = sqlx::query_as::<_, SemanticSearchResult>(
             r#"
             SELECT 
-                id, scene_order, start_time, end_time, 
-                summary_text as summary,
+                id, chunk_index as scene_order, start_time, end_time, 
+                COALESCE(summary_text, text_content, '') as summary,
                 metadata,
-                (1 - (summary_vector <=> $1::vector)) as similarity
-            FROM parent_chunks
-            WHERE uuid = $2
-            ORDER BY summary_vector <=> $1::vector
+                (1 - (embedding <=> $1::vector)) as similarity
+            FROM dev.chunks
+            WHERE file_uuid = $2 AND chunk_type = 'cut' AND embedding IS NOT NULL
+            ORDER BY embedding <=> $1::vector
             LIMIT $3
             "#,
         )