claude install reports installing v2.1.25 but actually keeps v2.1.23

Bug Description

claude install reports installing version 2.1.25 but the actual installed version remains 2.1.23.

Steps to Reproduce

1. Run claude install — the installer reports installing version 2.1.25
2. Run claude --version — output shows 2.1.23
3. Run claude — confirms running 2.1.23
4. Run npm install -g @anthropic-ai/claude-code@latest — this correctly installs 2.1.25
5. Run claude --version — now correctly shows 2.1.25
6. Claude suggests running claude install to update
7. Run claude install again — installer reports installing 2.1.25 but it downgrades back to 2.1.23

Expected Behavior

claude install should install the version it reports (2.1.25) and claude --version should reflect that version after installation.

Actual Behavior

claude install claims to install 2.1.25 but the binary remains at 2.1.23. Only npm install -g @anthropic-ai/claude-code@latest correctly installs the latest version, but running claude install afterwards reverts to the old version.

Workaround

Use npm install -g @anthropic-ai/claude-code@latest instead of claude install.

Environment

• OS: Windows
• Node.js installed via npm
• Claude Code versions involved: 2.1.23 / 2.1.25