Release version 0.15.7

feat(sidebar): A reworked sidebar with a fixed New chat / Search bar (with shortcut hints) and a dedicated collapsible "Pinned" section up top. Hover any conversation for quick pin/unpin and mark-done actions, and your pins and collapsed state are now remembered between sessions.
feat(chat): The message thread is now keyboard-scrollable — click into a transcript and use Arrow keys, PageUp/PageDown, Home/End and Space, just like the conversation list.
feat(channels): When an agent asks you a question, that prompt is now pushed to your IM channels and webhooks. On by default, never debounced, and localized across all 10 languages.
feat(hermes): A smoother Hermes setup — uv runtime install is now its own streamed step with an "Install uv" preflight action, and every uvx call pins Python 3.13 to avoid install failures on newer Python.
fix(update): In-place server upgrades no longer fail on Docker's overlayfs; the web-asset swap now falls back to a copy when a directory rename is rejected.

发布版本 0.15.7

功能(侧边栏)：重新设计的侧边栏，顶部新增固定的「新建对话 / 搜索」栏（带快捷键提示）和独立的可折叠「置顶」分组。悬停任意会话即可快速置顶/取消置顶或标记完成，置顶和折叠状态现在会在会话之间保留。
功能(聊天)：消息列表支持键盘滚动——点击进入消息区后，即可用方向键、PageUp/PageDown、Home/End 和空格键滚动，与会话列表一致。
功能(渠道)：当智能体向你提问时，该提问现在会推送到你的 IM 渠道和 Webhook。默认开启、不做防抖，并已覆盖全部 10 种语言。
功能(Hermes)：更顺畅的 Hermes 安装——uv 运行时安装独立为可流式查看的步骤并提供「安装 uv」预检操作，每次 uvx 调用固定使用 Python 3.13，避免在较新 Python 上安装失败。
修复(更新)：服务器在线升级不再因 Docker overlayfs 失败；当目录重命名被拒绝时，web 资源替换会自动改用复制方式。