Reduce resume OOM risk and fix update-config skill init (#304)

* Reduce resume transcript memory pressure

* Fix update-config bundled skill schema generation

---------

Co-authored-by: pr0ln <pr0ln@pr0lnui-Macmini.local>

src/utils/settings/types.ts

@@ -559,7 +559,7 @@ export const SettingsSchema = lazySchema(() =>
       enabledPlugins: z
         .record(
           z.string(),
-          z.union([z.array(z.string()), z.boolean(), z.undefined()]),
+          z.union([z.array(z.string()), z.boolean()]),
         )
         .optional()
         .describe(