Finally fixed #dmenu to launch scripts from my `~/bin` correctly.
The issue is that my home directory is an import from my previous Pop!OS install, but currently running on CachyOS, and there's some differences of implicit assumptions between the two. The short version is that I was missing a `~/.xsession` file containing:
```
#!/bin/sh
. ~/.profile
```
I already had a `~/.profile` that worked correctly, but it wasn't being executed during X11 login, so I had the system default `$PATH` but nothing user-specific. I also needed to delete my `~/.cache/dmenu_run` so it would recompute my path-available executables. Now I can properly launch Zen browser, and a wrapped version of Signal that actually uses the correct credential wallet, when using #i3.
I'll probably have to figure out similar fuckery again if I ever get #sway to work on my graphics card.
