20260831 後台最新消息調整字數上限

app/Filament/Resources/NewsResource.php

@@ -126,7 +126,7 @@ class NewsResource extends Resource
                         ->rows(5)
                         ->columnSpanFull()
                         ->label("短文")
-                        
+                        ->maxLength(84)
                         ->reactive()
                         ->helperText(function (callable $get) {