chore: ignore the one-off operator seed script

packages/core/seed-operator.mts creates the first operator by hand until the first-run wizard exists. It runs as the table owner and takes a password on the command line, so it must never be committable.

Signed-off-by: Matthew Wren <info@origindev.com>

Author: OriginDevIT

.gitignore

@@ -12,6 +12,9 @@ packages/db/src/schema.ts
 .env.*
 !.env.example
 
+# one-off operator seed (see its header) - must never be committed
+packages/core/seed-operator.mts
+
 .DS_Store
 Thumbs.db
 *.log