bbf6b921af
Backend port changed from 8000 to 8002 due to port conflict (frpc on Windows). - Add resolveImageUrl() to convert relative image URLs to full backend URLs - Fix all spatial page image src and download handlers to use backend address - Fix chat message image rendering to use correct port - Switch download to blob-based approach to support cross-origin file saving Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>