feat(backend): update admin settings and test infrastructure

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

backend/handlers/admin/testmain_test.go

@@ -8,8 +8,8 @@ import (
 	"testing"
 
 	"crussell/db"
-	"crussell/testutils/testdb"
 	"crussell/testutils/jwt"
+	"crussell/testutils/testdb"
 )
 
 func TestMain(m *testing.M) {
@@ -23,4 +23,4 @@ func TestMain(m *testing.M) {
 	code := m.Run()
 	pool.Close()
 	os.Exit(code)
-}
+}