Add logos folder to Docker build

- Copy frontend/logos folder to production container
- Logos now accessible at /logos/ path for version branding
- ESV and NKJV logos included in Docker builds

Dockerfile

@@ -30,6 +30,9 @@ WORKDIR /app
 COPY backend ./backend
 COPY --from=backend /app/backend/node_modules ./backend/node_modules
 
+# Copy logos folder for frontend
+COPY frontend/logos ./frontend/logos
+
 # Copy built frontend
 COPY --from=frontend-build /app/frontend/build ./frontend/build