Claude Desktop 2.0 Overview & Version Boundaries

Claude Desktop 2.0 overview: v2.37337.1, bundled CLI 2.1.295, and how 2.0 moved from a chat shell to a sandboxed workstation with zero-loss input.

📚 Back to the 2.0 overview · Next: Chapter 2: New Features in Depth ➡️

This chapter sets the scope of the Claude Desktop 2.0 analysis: which version was analyzed, what counts as a 2.0 change, and how the global design contract moved from a chat shell to a sandboxed workstation. It is a translation of the Chinese handbook chapter; every value is copied from it unchanged, and code blocks are reproduced as-is.

1. Overview

1.1 Version boundary

In the full Claude Desktop update released on 2026-10-15, the version jumped to v2.37337.1 (@ant/[email protected]).

From REA's review of the unpacked MainWindowPage-BD9CWQ83.css, index.chunk-BWk6pVUt.js and the core Vite modules of this version, we set the following rules for classifying the technical changes in this report:

graph TD
    subgraph CDS_2_0_Provenance["CDS 2.0 技术演进血缘图谱"]
        direction TB
        L1["【新增】<br/>1.x 查无此物，直接承载 2.0 全新功能<br/>• ModelSelectorEffort 5 阶推理调节器<br/>• ChatComposerQueuedMessages 离线重试容器<br/>• ChartContainer / DataTable 离线看板容器<br/>• PopoutWindow 独立弹射多窗口状态机<br/>• Modern CSS sibling-index() 与 View Transitions"]
        
        L2["【重构】<br/>1.x 已有旧逻辑，2.0 彻底推翻重构并解释其动机<br/>• 会话侧边栏：由随意文件夹分类收拢为 4 态物理执行源<br/>• 工作台底色：由暖陶土纸质跃迁为雪花白与黑曜石墨黑<br/>• 基础圆角：Composer 圆角由 20px 降为 12px/14px，引入 Density 系统<br/>• 模型选择器：从单纯选模升级为 Usage 用量感知，剥离 Context 抽屉<br/>• 骨架屏与胶囊：引入 Wave/Lockstep 双模与 1.32x 过冲弹簧"]
        
        L3["【底座解密】<br/>长期演进但此前分散混淆，2.0 打包规范化首次完整暴露<br/>• 40 大标准化 data-cds 原生命名空间<br/>• 47 组关键帧纯 CSS 动效参数<br/>• 5 阶时间 Token 矩阵 (60ms ~ 450ms) 与 3 大核心贝塞尔曲线"]
    end

We also draw a clear line between the desktop package and the separately released command-line tool:

Bundled with desktop: the Claude Code CLI bundled inside desktop v2.37337.1 is 2.1.295;
Released separately the same day: CLI 2.1.299 / 2.1.300 (including idle compaction, the /effort command and mod virtualText) are standalone command-line updates and are not included in the desktop installer.

1.2 How the global design contract evolved

1. The 1.x chat shell vs the 2.0 sandboxed workstation

Dimension	CDS 1.x baseline	CDS 2.0 architecture
Positioning	A single-window "streaming chat shell for a large model"	A "development workstation" with local VM isolation and multi-agent dispatch
Execution isolation	Loosely bound to local folders	Strictly separates four physical execution sources: This Computer / Cloud / SSH / Slack
Multi-task view	One main window, chat and files squeezed into a split screen	Separate `PopoutWindow` (pop-out window) support for viewing in parallel across screens
Offline capability	Relies on a public CDN to fetch render scripts	Three render engines built into the local ASAR, fully usable offline
State persistence	Memory only; pending input is lost on refresh	An offline retry ledger in IndexedDB, restored in place after refresh

2. Why Anthropic reshaped the global contract

A paradigm shift from "Chatbot" to "Autonomous Agent":
In the 1.x era, users mostly talked to Claude in text, generated code and copied it by hand. In the 2.0 era, the Claude Code CLI and Cowork mode began taking over terminal operations, automatic file reads/writes and parallel Git branch clones on the user's computer. Had the old "single-window conversation" model stayed, autonomous tasks running in the background would easily interrupt what the user is doing in the foreground (eating keystrokes, stealing focus).
Tighter physical security and sandbox permissions:
Grouping by folder in the old version made users think every task had the same execution boundary. In fact, tasks running in a lightweight local Linux VM, on a remote Linux SSH server and in a cloud container differ completely in destructive potential, file write scope and security boundary. So 2.0 restructures conversations to be isolated by physical source (Environment), removing the risk of crossing security boundaries.

3. Core design contracts: environment immutability and the zero-loss input promise

Contract 1: the environment is immutable after a conversation is created (Environment Immutability):
In 2.0, once NewSessionDrawer creates a conversation, its Context Window size, Worktree root and MCP extension config are frozen permanently, preventing the Prompt Caching invalidation and state confusion that changing the environment mid-conversation would cause.
Contract 2: user instructions are never lost (Zero-loss Input Promise):
Whether the app crashes, the network drops for a moment, the 5-hour rate limit is hit or the developer refreshes the window, the user's instructions must be persisted to local storage and have a deterministic in-place retry mechanism.

📚 2.0 overview · Chapter 2: New Features in Depth ➡️

Claude Desktop 2.0: Overview & Version Boundaries