adds help texts

app/Nova/AnswerResource.php

@@ -79,32 +79,38 @@ public function fields(NovaRequest $request): array
             BelongsTo::make('Session', 'session', SessionResource::class)
                 ->sortable()
                 ->filterable()
-                ->rules('required'),
+                ->readonly()
+                ->help('The questionnaire session this answer belongs to.'),
 
             BelongsTo::make('Question', 'question', QuestionResource::class)
                 ->sortable()
                 ->filterable()
-                ->rules('required'),
+                ->readonly()
+                ->help('The question that was answered.'),
 
             Text::make('Value')
                 ->sortable()
                 ->filterable()
                 ->copyable()
-                ->rules('nullable', 'max:255'),
+                ->readonly()
+                ->help('The selected answer: "yes", "no", or "not_applicable". Empty for open text questions.'),
 
             Textarea::make('Text Value')
                 ->alwaysShow()
-                ->rules('nullable'),
+                ->readonly()
+                ->help('Any written details or free text the user provided for this question.'),
 
             DateTime::make('Created At')
                 ->exceptOnForms()
                 ->sortable()
-                ->filterable(),
+                ->filterable()
+                ->help('When this answer was first saved.'),
 
             DateTime::make('Updated At')
                 ->exceptOnForms()
                 ->sortable()
-                ->filterable(),
+                ->filterable()
+                ->help('When this answer was last changed.'),
         ];
     }