### Description

`$HOME/.local/bin` appears twice in `$PATH` because it is added by two independent sources, neither of which checks whether the directory is already present:

1. `/etc/security/pam_env.conf` (PAM session setup, shipped by Omarchy):
   ```
   PATH DEFAULT=/usr/local/sbin:/usr/local/bin:/usr/bin:@{HOME}/.local/share/mise/shims:@{HOME}/.local/bin
   ```
2. `/usr/share/omarchy-zsh/shell/envs` (shell init, packaged by Omarchy):
   ```sh
   export PATH="$PATH:$HOME/.local/bin"
   ```

So the session `$PATH` (visible in the Hyprland compositor environment) already contains `$HOME/.local/bin`, and every interactive zsh/bash session appends it a second time.

This is harmless at lookup time (the second entry is just redundant), but it is noisy for debugging and for tooling that displays or parses `$PATH`.

### Steps to reproduce

1. Fresh Omarchy 4.0.4 install, zsh as default shell.
2. Run:
   ```sh
   echo "$PATH" | tr ':' '\n'
   ```
3. Observe that `$HOME/.local/bin` appears twice.

### Expected behavior

`$HOME/.local/bin` should appear only once. A guard like the one `/etc/profile` already uses would prevent the duplicate:

```sh
case ":$PATH:" in
  *":$HOME/.local/bin:"*) ;;
  *) export PATH="$PATH:$HOME/.local/bin" ;;
esac
```

(Alternatively, drop the PAM entry or the shell entry so there is a single source of truth.)

### System details

- Omarchy: 4.0.4-1
- Shell: zsh
- Session: Hyprland
- Debug log: https://logs.omarchy.org/hmCzXk