fix(shell): restore always-on PATH after macOS path_helper

path_helper runs after ~/.zshenv in login shells and puts Homebrew ahead of
fnm, pyenv, and ~/.local/bin. Re-source ~/.zshenv from ~/.zprofile and make
prepends idempotent so login and zsh -c resolve the same binaries.

.zprofile

@@ -0,0 +1,7 @@
+# easyzsh: reapply always-on PATH after macOS path_helper
+# Login shells only. /etc/zprofile runs path_helper after ~/.zshenv and puts
+# Homebrew and system paths ahead of fnm, pyenv, and ~/.local/bin.
+# ~/.zshenv prepends are idempotent, so re-sourcing restores that order.
+if [[ -x /usr/libexec/path_helper ]]; then
+  . "${ZDOTDIR:-$HOME}/.zshenv"
+fi