[Bug] claude update falsely detects npm-global install when npm prefix overlaps ~/.local/bin

claude update falsely reports an "npm-global" install when npm prefix overlaps ~/.local/bin

Repro: npm config set prefix ~/.local, then install Claude natively, then run claude update.

Effect: claude update warns about "Multiple installations found" and a "Leftover npm global installation," when in reality there is no npm install of Claude.

Environment Info

• Platform: linux
• Terminal: vte-based
• Version: 2.1.181
• Feedback ID: 374ed4b4-373f-4238-9397-e9a179021aad