db: optional sql driver name for Manager, close on shutdown

VERSION

@@ -1 +1 @@
-v1.1.4-dev
+v1.1.5-dev

internal/db/manager.go

@@ -22,15 +22,15 @@ type Manager struct {
 }
 
 // NewManager creates a new database connection manager with separate writer and reader connections.
+// If readerDSN is empty, the reader uses the same connection as the writer.
 //
 // sqlDriver is the registered sql driver name. Pass "" to use the default "mysql" driver.
-// When OpenTelemetry tracing is enabled, pass the name returned by otelsql.Register() instead as
+// When OpenTelemetry tracing is enabled, pass the name returned by otelsql.Register() instead —
 // that call wraps the "mysql" driver and returns a dynamically generated name that captures
 // DB spans. Without this indirection, otelsql cannot intercept sql.Open.
 //
-//	 sqlDriver options:
-//		""                          no tracing; NewManager defaults to "mysql"
-//		otelsql.Register("mysql")   tracing enabled; dynamically registered driver wrapping "mysql"
+//	""                          no tracing; NewManager defaults to "mysql"
+//	otelsql.Register("mysql")   tracing enabled; dynamically registered driver wrapping "mysql"
 func NewManager(sqlDriver, writerDSN, readerDSN string, logger *slog.Logger) (*Manager, error) {
 	if sqlDriver == "" {
 		sqlDriver = "mysql"