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

fix: resolve image generation 429 cascade returning 502 to clients

feat: add WebDAV image storage

restore ai review preflight

Merge branch 'fork/Jimmy-Bots/usermult'

Merge branch 'fork/Jimmy-Bots/cf-backup'

Add global system prompt

modified the default val

feat: Add image account concurrency configuration and management

feat: add cf r2 backup

Add configurable image poll timeout

Add request content filtering

feat: add image thumbnails in manager and logs

Add rate-limited account removal setting

增加图片管理、日志管理，优化敏感词等场景

Update config and management UI

feat(auth): 增加 admin/user 密钥角色与访问控制

feat(storage): add pluggable storage backend system with multiple implementations

优化配置

重构后端服务，增加文本生成模型

Merge branch 'fork/Hylouis233/feat/accounts-image-capability'

Add configurable image base URL handling

feat(accounts): improve image capability handling

Refactor settings config and simplify proxy setup

refactor(config): 重构配置加载逻辑并移除示例配置文件依赖

Merge branch 'fork/xingyunzhou/main'

Handle missing Docker config file mounts

Update config.py

feat(accounts): 添加账户导入对话框功能

init:初始化项目