[Bug] Tool call fails with "prepare" undefined on fresh install

[JasonChen-Uki]

Environment:

• Windows 10 native: Node.js v22.22.2, pnpm 11.7.0, DSH source build
• WSL2 Ubuntu (Linux 6.x, x86_64): Node.js v24.21.0, pnpm 11.7.0, DSH source build

Reproduction:

1. git clone https://github.com/deepseek-ai/deepseek-harness.git
2. pnpm install && pnpm run build
3. pnpm dsh web
4. In the Web UI, create a new session with default model (official DeepSeek).
5. Send: list files in current directory

Expected: The Bash tool executes and returns the file list.

Actual: The turn fails immediately with:
本轮运行失败 Cannot read properties of undefined (reading 'prepare')

Additional context:

1. The issue persists on a completely fresh install, with no third-party plugins installed.
2. node_modules/@deepseek-ai/dsh-tools was missing after pnpm install. I manually created the symlink (ln -s ../../packages/core/tools node_modules/@deepseek-ai/dsh-tools) and confirmed packages/core/tools/lib/index.js exists. The error persists.
3. pnpm why @deepseek-ai/dsh-tools returns no output, meaning no installed package depends on dsh-tools. Manually symlinking it into node_modules/@deepseek-ai/dsh-tools does not fix the error — the scheduler still fails at runtime.
4. The same error also reproduces in a native Windows 10 environment (Node.js v22.22.2, pnpm 11.7.0, fresh source build). This is not WSL-specific.
5. The error is triggered by any tool invocation (Bash, Glob, Pwsh), regardless of the model used (official DeepSeek default).
6. ~/.dsh/profiles/web/cordis.yml is an empty array []. The profile is composed entirely from bundles listed in ~/.dsh/profiles/web/package.json: ["@deepseek-ai/dsh-base", "@deepseek-ai/dsh-web-app"].
7. packages/bundle/base/package.json correctly declares @deepseek-ai/dsh-tools and all @deepseek-ai/dsh-tool-* packages in its dependencies. However, ~/.dsh/profiles/web/node_modules/@deepseek-ai/ only contains a subset that exactly mirrors the root project's devDependencies (dsh-agent, dsh-browser-use, dsh-computer-use, dsh-experimental-*, dsh-llm-replay, dsh-skill-office, dsh-tool-session-query, dsh-web-fetch-http). dsh-tools and the tool packages are missing.
8. ~/.dsh/profiles/web/pnpm-workspace.yaml contains only packages: - . and nodeLinker: hoisted. The profile's own dependencies field is empty {}. This suggests the profile dependency resolution is not following dsh-base's transitive dependencies, but instead only mirrors the root project's devDependencies — which happens to not include dsh-tools.
9. ~/.dsh/logs/ does not exist after a fresh run, so no DSH logs are available. The only log files in the environment are from npm and ubuntu-pro. This suggests DSH may be failing before its logging subsystem initializes.

Attachments: No DSH logs are available (see item 9). A screenshot of the Web UI error is attached.

[limoonrise]

me too

[wzhejunqiu]

已有老哥给出解决方案：#7219

希望有帮助

[limoonrise]

确实有用！！