Optimize image caption flow to skip pre-success failed images and reduce redundant LLM calls#3

nbnbnd merged 4 commits into

mainnbnbnd/astrbot_plugin_SpectreCore:mainfrom

copilot/update-image-caption-logicnbnbnd/astrbot_plugin_SpectreCore:copilot/update-image-caption-logicCopy head branch name to clipboard