Keep exported invoices out of the repository

storage/archive is runtime output, and on a real server it is a mount point.
Committing it would put customer documents into git and make a deploy fight the
archive for the directory.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

.gitignore

@@ -24,6 +24,10 @@
 /public/storage
 /storage/*.key
 /storage/pail
+# Exported invoice PDFs — runtime output, and on a real server this is a mount
+# point. Committing it would put customer documents into the repository and
+# make a deploy fight the archive for the directory.
+/storage/archive
 /vendor
 _ide_helper.php
 Homestead.json