## What happens

`omarchy display text size` with no arguments prints the wrong terminal font size on any machine
that does not use Ghostty. It reports the value from the shipped `~/.config/ghostty/config` instead
of the terminal actually in use.

On a machine where foot is the only terminal installed, with `~/.config/foot/foot.ini` set to
`size=9.5`:

```
$ omarchy display text size
text size: 15 px
gtk text-scaling-factor: 1.2726999999999999
terminal font: 11 pt
```

The real foot size is 9.5. The 11 comes from `~/.config/ghostty/config`, and Ghostty is not
installed.

## Cause

The setter and the getter in `bin/omarchy-display-text-size` walk different lists.

`set_terminal_size` writes every terminal config it finds, using four independent `if` blocks:

```bash
if [[ -f ~/.config/alacritty/alacritty.toml ]]; then ...
if [[ -f ~/.config/kitty/kitty.conf ]]; then ...
if [[ -f ~/.config/ghostty/config ]]; then ...
if [[ -f ~/.config/foot/foot.ini ]]; then ...
```

`term_current_pt` reads only the first config it finds, using an `elif` chain with Ghostty first:

```bash
term_current_pt() {
  if [[ -f ~/.config/ghostty/config ]]; then
    grep -oP '^font-size = \K[0-9.]+' ~/.config/ghostty/config | head -1
  elif [[ -f ~/.config/alacritty/alacritty.toml ]]; then
  ...
```

Omarchy ships default configs for all four terminals, so `~/.config/ghostty/config` exists on a
stock install whether or not the Ghostty binary does. The getter therefore stops at Ghostty on
almost every machine, and the reported number only matches reality for Ghostty users.

The divergence stays invisible while the four files agree, and the setter keeps them in step. Edit
one file on its own and the report goes wrong. The docs invite exactly that, by naming `foot.ini`
as the place the terminal size lives.

## Reproduce

On a machine with foot installed and Ghostty not installed, both config files present:

1. `omarchy display text size 12`
2. Edit `~/.config/foot/foot.ini` and set `:size=9.5` by hand
3. Run `omarchy display text size`

Reported terminal font is 9 pt. Actual foot size is 9.5.

## Suggested fix

Resolve the terminal the way the rest of Omarchy does, rather than by config file existence.
`xdg-terminal-exec` already knows which terminal will open. `command -v` tells an installed binary
from a shipped config file. Either one makes the getter agree with the machine.

Failing that, having the getter report every config it finds would at least stop it naming one
terminal authoritatively when four were written.

## Note

PR #6550 reworks this file and adds `--shell`, `--gtk` and `--terminals` scope flags. Its status
rows read back through the same getter, so the scope row for Terminals would inherit this. Worth
settling the resolution question there rather than twice.

Reproduced on omarchy 4.0.1-1. The same code sits at the tip of `quattro`.