claude install doesn't persist ~/.local/bin to PATH in shell config

Bug Description

Running claude install installs the binary to ~/.local/bin/claude but does not add ~/.local/bin to the user's PATH in any shell configuration file (.zshrc, .zprofile, .bashrc, etc.).

Expected Behavior

The installer should add something like:

export PATH="$HOME/.local/bin:$PATH"

to the user's shell config file (e.g., ~/.zshrc for zsh users).

Actual Behavior

• The installer sets ~/.local/bin in the current session's PATH only
• No changes are made to shell configuration files
• Result: claude works in the terminal where install was run, but fails after:
• Opening a new terminal window
• Restarting the computer
• Opening terminal from Spotlight/Finder

Reproduction Steps

1. Start with a clean environment (no ~/.local/bin in PATH)
2. Run claude install
3. Observe that claude works in current terminal
4. Open a new terminal window (not a tab)
5. Run which claude → command not found

Environment

• macOS (Darwin 25.2.0)
• zsh shell
• Claude Code 2.1.19 (installed via website/binary)

Workaround

Manually add to ~/.zshrc:

export PATH="$HOME/.local/bin:$PATH"