install.sh 因用户名包含 fish，向 .zshrc 写入了 fish_add_path

What version of Kimi Code is running?

0.26.0

Which open platform/subscription were you using?

Kimi Code (OAuth)

Which model were you using?

K3 thinking

What platform is your computer?

Darwin 25.5.0 arm64 arm

What issue are you seeing?

我的 shell 是 zsh，但安装器向 ~/.zshrc 写入了 Fish 专用命令：

fish_add_path -g "/Users/fish2lab/.kimi-code/bin"

导致启动 zsh 时出现：

zsh: command not found: fish_add_path

原因有点特殊：我的用户名是 fish2lab。安装器似乎把路径中的 fish 当成了 shell 类型

What steps can reproduce the bug?

当前脚本先正确得到：

rc="/Users/fish2lab/.zshrc"

随后使用完整路径判断是否为 Fish：

if [[ "$rc" == *fish* ]]; then
  export_line="fish_add_path ..."
fi

因为 $HOME 中包含 fish，条件误命中。

What is the expected behavior?

No response

Additional information

请直接根据 $SHELL 或已经检测出的 shell_name 选择 PATH 语法，不要匹配 rc 文件的完整路径：

if [ "$shell_name" = "fish" ]; then
  export_line="fish_add_path ..."
else
  export_line="export PATH=\"${KIMI_INSTALL_DIR}/bin:\$PATH\""
fi

建议增加一个回归测试：SHELL=/bin/zsh 且 $HOME 路径包含 fish。

Start in install.sh, where the rc path is checked to choose the PATH command. Reproduce with SHELL=/bin/zsh and a HOME path containing “fish”, then verify that shell detection uses the shell name rather than the full rc path. Add or update a regression test for this case and confirm that zsh receives valid syntax while Fish still receives fish_add_path.