add SQLOFunc type and update SQLO error messages

dbx.go

@@ -10,6 +10,9 @@ import (
 // ModuleDBName is the name of the database module.
 const ModuleDBName = "database"
 
+// SQLOFunc is a function that returns a *sql.DB pointer.
+type SQLOFunc = func() *sql.DB
+
 // Queryable interface is an SQL driver object that can execute SQL statements
 // for Jet.
 type Queryable interface {

dbxm/mysql.go

@@ -32,7 +32,7 @@ var (
 
 // SQLO returns the current SQL database handle.
 func SQLO() *sql.DB {
-	dbModule.RequireLoaded("dbx.SQLO requires database module") // ensure the module is loaded before accessing the database
+	dbModule.RequireLoaded("dbxm.SQLO requires database module") // ensure the module is loaded before accessing the database
 	if sqlDB == nil {
 		panic("SQL database not initialized")
 	}

dbxp/pxg.go

@@ -32,7 +32,7 @@ var (
 
 // SQLO returns the current SQL database handle.
 func SQLO() *sql.DB {
-	dbModule.RequireLoaded("dbx.SQLO requires database module") // ensure the module is loaded before accessing the database
+	dbModule.RequireLoaded("dbxp.SQLO requires database module") // ensure the module is loaded before accessing the database
 	if sqlDB == nil {
 		panic("SQL database not initialized")
 	}