feat(web-session): 使用 turn/steer 处理 Codex 转向

feat(web-session): 支持富文本图片粘贴与附件导入

解析网页及 Office 富文本中的图片并保持原始顺序。
支持本机 Office 临时图片导入与远程图片确认下载，并增加路径、MIME、大小及 SSRF 安全校验。

feat(settings): add custom browser page title

Persist an instance-wide page title while preserving project and activity prefixes. Include validation, settings backup support, and frontend/backend regression coverage.

feat(ui): hide kanban workspace tab

fix(web-session): restore IME-safe composer input

ci: use OIDC for npm publishing

feat(sync): persist shared project and session ordering

fix(web-session): add missing mobile composer scroll helpers

feat(file-manager): add recursive file search

feat(web-session): add Codex skill browser and CodeMirror composer