feat: Add Global Module Settings and Caption to Images

- Introduced GlobalModuleSettings model for platform-wide module enable/disable settings.
- Added 'caption' field to Images model to store image captions.
- Updated GenerateImagePromptsFunction to handle new caption structure in prompts.
- Enhanced AIPromptViewSet to return global prompt types and validate active prompts.
- Modified serializers and views to accommodate new caption field and global settings.
- Updated frontend components to display captions and filter prompts based on active types.
- Created migrations for GlobalModuleSettings and added caption field to Images.

backend/igny8_core/modules/system/serializers.py

@@ -9,6 +9,7 @@ class AIPromptSerializer(serializers.ModelSerializer):
     """Serializer for AI Prompts"""
     
     prompt_type_display = serializers.CharField(source='get_prompt_type_display', read_only=True)
+    default_prompt = serializers.SerializerMethodField()
     
     class Meta:
         model = AIPrompt
@@ -23,6 +24,18 @@ class AIPromptSerializer(serializers.ModelSerializer):
             'created_at',
         ]
         read_only_fields = ['id', 'created_at', 'updated_at', 'default_prompt']
+    
+    def get_default_prompt(self, obj):
+        """Get live default prompt from GlobalAIPrompt"""
+        from .global_settings_models import GlobalAIPrompt
+        try:
+            global_prompt = GlobalAIPrompt.objects.get(
+                prompt_type=obj.prompt_type,
+                is_active=True
+            )
+            return global_prompt.prompt_value
+        except GlobalAIPrompt.DoesNotExist:
+            return f"ERROR: Global prompt '{obj.prompt_type}' not configured in admin"
 
 
 class AuthorProfileSerializer(serializers.ModelSerializer):