big ole refactor

internal/handlers/callback.go

@@ -22,7 +22,7 @@ import (
 func Callback(
 	s *hws.Server,
 	auth *hwsauth.Authenticator[*db.User, bun.Tx],
-	conn *bun.DB,
+	conn *db.DB,
 	cfg *config.Config,
 	store *store.Store,
 	discordAPI *discord.APIClient,
@@ -70,7 +70,7 @@ func Callback(
 			switch data {
 			case "login":
 				var redirect func()
-				if ok := db.WithWriteTx(s, w, r, conn, func(ctx context.Context, tx bun.Tx) (bool, error) {
+				if ok := conn.WithWriteTx(s, w, r, func(ctx context.Context, tx bun.Tx) (bool, error) {
 					redirect, err = login(ctx, auth, tx, cfg, w, r, code, store, discordAPI)
 					if err != nil {
 						throw.InternalServiceError(s, w, r, "OAuth login failed", err)