Handle image asset tool events

Merge branch 'fork/Xbang0222/fix/image-429-cascade-clean'

fix register merge session handling

fix: resolve image generation 429 cascade returning 502 to clients

fix: raise clear error message on image poll timeout

fix: report invalid token refresh failures

Add configurable image poll timeout

feat(chat): support image input in chat completions

增加图片管理、日志管理，优化敏感词等场景

Update config and management UI

fix claude message tool streaming

fix chat stream duplicate assistant history

support optional image size flow

Merge branch 'fork/qup1010/main'

feat(image): 实现图片比例选择并进行移动端响应式优化

fix: filter invalid file_upload id in image results for image-to-image

fix: reduce image generation wait time

Fix account detection and text conversation handling

重构后端服务，增加文本生成模型