Rename AdventureLog to Voyage and add fork attribution

- Replace all AdventureLog references with Voyage across ~102 files
  (7 case variants: AdventureLog, adventurelog, Adventurelog, ADVENTURELOG,
  AdventUrelog, AdventureLOG, adventure-log, adventure_log)
- Rename brand, static, and documentation assets to use voyage naming
- Rename install_adventurelog.sh → install_voyage.sh
- Update README.md and voyage_overview.md to credit AdventureLog as
  the upstream project and Sean Morley as its original creator

backend/server/adventures/views/collection_view.py

@@ -481,7 +481,7 @@ class CollectionViewSet(viewsets.ModelViewSet):
         collection = self.get_object()
 
         export_data = {
-            'version': getattr(settings, 'ADVENTURELOG_RELEASE_VERSION', 'unknown'),
+            'version': getattr(settings, 'VOYAGE_RELEASE_VERSION', 'unknown'),
             # Omit export_date to keep template-friendly exports (no dates)
             'collection': {
                 'id': str(collection.id),

backend/server/adventures/views/generate_description_view.py

@@ -17,7 +17,7 @@ class GenerateDescription(viewsets.ViewSet):
 
     # User-Agent header required by Wikipedia API, Accept-Language patched in per request
     BASE_HEADERS = {
-        'User-Agent': f'AdventureLog/{getattr(settings, "ADVENTURELOG_RELEASE_VERSION", "unknown")}'
+        'User-Agent': f'Voyage/{getattr(settings, "VOYAGE_RELEASE_VERSION", "unknown")}'
     }
     DEFAULT_LANGUAGE = "en"
     LANGUAGE_PATTERN = re.compile(r"^[a-z0-9-]{2,12}$", re.IGNORECASE)

backend/server/adventures/views/import_export_view.py

@@ -41,7 +41,7 @@ class BackupViewSet(viewsets.ViewSet):
         
         # Build export data structure
         export_data = {
-            'version': settings.ADVENTURELOG_RELEASE_VERSION,
+            'version': settings.VOYAGE_RELEASE_VERSION,
             'export_date': datetime.now().isoformat(),
             'user_email': user.email,
             'user_username': user.username,
@@ -390,7 +390,7 @@ class BackupViewSet(viewsets.ViewSet):
         # Return ZIP file as response
         with open(tmp_file.name, 'rb') as zip_file:
             response = HttpResponse(zip_file.read(), content_type='application/zip')
-            filename = f"adventurelog_backup_{user.username}_{datetime.now().strftime('%Y%m%d_%H%M%S')}.zip"
+            filename = f"voyage_backup_{user.username}_{datetime.now().strftime('%Y%m%d_%H%M%S')}.zip"
             response['Content-Disposition'] = f'attachment; filename="{filename}"'
         
         # Clean up

backend/server/adventures/views/location_image_view.py

@@ -198,7 +198,7 @@ class ContentImageViewSet(viewsets.ModelViewSet):
             return Response({"error": result}, status=status.HTTP_400_BAD_REQUEST)
 
         try:
-            headers = {'User-Agent': 'AdventureLog/1.0 (Image Proxy)'}
+            headers = {'User-Agent': 'Voyage/1.0 (Image Proxy)'}
             max_redirects = 3
             current_url = image_url
 

backend/server/adventures/views/recommendations_view.py

@@ -14,7 +14,7 @@ class RecommendationsViewSet(viewsets.ViewSet):
     permission_classes = [IsAuthenticated]
     OVERPASS_URL = "https://overpass-api.de/api/interpreter"
     NOMINATIM_URL = "https://nominatim.openstreetmap.org/search"
-    HEADERS = {'User-Agent': 'AdventureLog Server'}
+    HEADERS = {'User-Agent': 'Voyage Server'}
 
     # Quality thresholds
     MIN_GOOGLE_RATING = 3.0  # Minimum rating to include