Replace counter-arguments with possible answers and unify search inputs.

Models, AI assistant, and UI now show diskussionsfertige Antworten without titles; shared search partial fixes aria-label rendering.

Co-authored-by: Cursor <cursoragent@cursor.com>

claims/admin_forms.py

@@ -1,6 +1,6 @@
 from django import forms
 
-from .models import Claim, CounterArgument, EvidenceFile, Source
+from .models import Claim, PossibleAnswer, EvidenceFile, Source
 
 
 class ClaimAdminForm(forms.ModelForm):
@@ -26,13 +26,12 @@ class SourceInlineForm(forms.ModelForm):
         }
 
 
-class CounterArgumentInlineForm(forms.ModelForm):
+class PossibleAnswerInlineForm(forms.ModelForm):
     class Meta:
-        model = CounterArgument
+        model = PossibleAnswer
         fields = '__all__'
         widgets = {
-            'argument': forms.Textarea(attrs={'rows': 3, 'class': 'fk-admin-textarea'}),
-            'response': forms.Textarea(attrs={'rows': 4, 'class': 'fk-admin-textarea'}),
+            'answer': forms.Textarea(attrs={'rows': 4, 'class': 'fk-admin-textarea'}),
         }