diff --git a/src/zcatconfig.zig b/src/zcatconfig.zig
index 570ce02..4abfe99 100644
--- a/src/zcatconfig.zig
+++ b/src/zcatconfig.zig
@@ -563,13 +563,20 @@ pub fn save(
         const value_len = value.len;
         const total_len = key_len + 2 + value_len;
 
-        if (total_len < 40 and v.description.len > 0) {
+        // Construir comentario con opciones válidas si existen
+        var comment_buf: [256]u8 = undefined;
+        const comment: []const u8 = if (v.auto_validate) |valid|
+            std.fmt.bufPrint(&comment_buf, "{s} [{s}]", .{ v.description, valid }) catch v.description
+        else
+            v.description;
+
+        if (total_len < 40 and comment.len > 0) {
             const padding = 40 - total_len;
             const line = std.fmt.bufPrint(&line_buf, "{s}: {s}{s}# {s}\n", .{
                 v.config_key,
                 value,
                 spaces(padding),
-                v.description,
+                comment,
             }) catch unreachable; // Buffer 1024 es suficiente
             try file.writeAll(line);
         } else {
@@ -760,6 +767,13 @@ pub fn ConfigManager(
             self.notifyObservers(change);
         }
 
+        /// Establece un valor SIN notificar observers
+        /// Útil para carga masiva desde BD (evita writes innecesarios)
+        pub fn setSilent(self: *Self, key: []const u8, value: []const u8) ConfigError!void {
+            try EngineType.set(&self.config, key, value);
+            self.dirty = true;
+        }
+
         /// Busca variable por config_key
         fn findVariableByKey(key: []const u8) ?*const ConfigVariable {
             inline for (variables) |*v| {