fix(email): complete mail settings and templates

assets/admin/src/schema/sections/global/index.js

@@ -7,7 +7,7 @@ import { logoSchema } from './logo.js'
 import { commonSchema } from './common.js'
 import { layoutSchema } from './layout.js'
 import { searchSchema } from './search.js'
-import { emailSchema } from './email.js'
+// Email schema is served by the PHP template catalog to keep defaults and fields canonical.
 import { tabbarSchema } from './tabbar.js'
 import { floatingSchema } from './floating.js'
 import { i18nSchema } from './i18n.js'
@@ -21,7 +21,7 @@ export const globalSchemas = {
   common: commonSchema,
   layout: layoutSchema,
   search: searchSchema,
-  email: emailSchema,
+  email: null,
   tabbar: tabbarSchema,
   floating: floatingSchema,
   i18n: i18nSchema,