server: use fetched contents of news for search index

server/sql/count.sql

@@ -1,10 +1,9 @@
-SELECT
-    COUNT(*) count
+SELECT COUNT(*) AS count
 FROM
     post
 WHERE
     (
-        $1 :: text IS NULL
+        $1::text IS NULL
         OR site = $1
     )
     AND (
@@ -12,6 +11,7 @@ WHERE
         OR NOT is_read
     )
     AND (
-      $3 :: text IS NULL
-      OR to_tsvector('english', summary) @@ websearch_to_tsquery('english', $3)
+        $3::text IS NULL
+        OR TO_TSVECTOR('english', search_summary)
+        @@ WEBSEARCH_TO_TSQUERY('english', $3)
     )