(perf)db: wrap update-file in sql transaction (#1827)

This should lead to some performance gains on buffers with lots of
inserts required (e.g. when the buffer has a lot of links).

CHANGELOG.md

@@ -8,6 +8,7 @@
 ### Changed
 - [#1795](https://github.com/org-roam/org-roam/pull/1795) buffer: optimized reflinks fetch
 - [#1809](https://github.com/org-roam/org-roam/pull/1809) capture: the mandatory `:if-new` property of each capture template is now renamed to `:target`
+- [#1829](https://github.com/org-roam/org-roam/pull/1829) perf: file sql updates are now wrapped in a transaction
 
 ### Fixed
 - [#1798](https://github.com/org-roam/org-roam/pull/1798) org-roam-node-at-point: do not skip invisible headings

org-roam-db.el

@@ -495,6 +495,7 @@ If the file exists, update the cache with information."
         info)
     (unless (string= content-hash db-hash)
       (org-roam-with-file file-path nil
+        (emacsql-with-transaction (org-roam-db)
           (save-excursion
             (org-set-regexps-and-options 'tags-only)
             (org-roam-db-clear-file)
@@ -514,7 +515,7 @@ If the file exists, update the cache with information."
             (when (require 'org-cite nil 'noerror)
               (org-roam-db-map-citations
                info
-             (list #'org-roam-db-insert-citation))))))))
+               (list #'org-roam-db-insert-citation)))))))))
 
 ;;;###autoload
 (defun org-roam-db-sync (&optional force)