Release version 0.15.10

• feat(composer): The message input is now a rich-text composer — type @ for a mention panel that drops inline badges for files, sessions, commits, agents, and skills, with Markdown rendered as you type.
• feat(chat): Attached files now show as inline, clickable badges in your sent messages.
• feat(editor): Select lines in a file and add them to the conversation as a line-range badge.
• feat(mcp): A new get_session_info tool resolves an @-mentioned session into its metadata, stats, and recent messages.
• feat(appearance): The interface font now defaults to System Monospace.
• fix(conversations): File links in conversation titles now fold to their label instead of raw Markdown.

发布版本 0.15.10

• 功能(输入框)：消息输入框升级为富文本编辑器——输入 @ 打开提及面板，插入文件、会话、提交、智能体和技能的内联徽章，Markdown 边输入边渲染。
• 功能(聊天)：附加的文件现在以内联、可点击的徽章显示在已发送的消息中。
• 功能(编辑器)：在文件中选中若干行，即可作为行号区间徽章加入对话。
• 功能(MCP)：新增 get_session_info 工具，将 @ 提及的会话解析为其元数据、统计信息和最近消息。
• 功能(外观)：界面字体现在默认使用系统等宽字体（System Monospace）。
• 修复(会话)：会话标题中的文件链接现在折叠为标签，不再显示原始 Markdown。