## What happened

Running `omarchy install editor zed` (via the install menu or `omarchy-install-editor-zed`) fails on aarch64 with:

```
error: package 'zed' was not found
```

Neither `zed` nor `omazed` gets installed, because the script does a single atomic transaction:

```bash
omarchy-pkg-add zed omazed
# -> pacman -S --noconfirm --needed zed omazed
```

Since `zed` isn't resolvable, the whole pacman transaction aborts and `omazed` (which *is* available for aarch64, arch=any) never gets installed either.

## Root cause

The `omarchy` repo (`https://pkgs.omarchy.org/edge/$arch`) does not currently publish a `zed` package for the `aarch64` architecture — only `omazed` (arch=any) is present. `pacman -Si zed` on aarch64 returns "package 'zed' was not found", while `pacman -Si omazed` succeeds.

Zed itself has no packaging problem here — the upstream project ships official aarch64 Linux builds (glibc >= 2.35 required; this system has 2.43) and installs/runs fine via `curl -f https://zed.dev/install.sh | sh`.

## Expected

`omarchy install editor zed` should succeed on aarch64, either by:
- Publishing a `zed` package for aarch64 in the `omarchy` repo, or
- Falling back to Zed's official install script for architectures where the repo package isn't available.

## Steps to reproduce

1. On an aarch64 Omarchy install, run `omarchy install editor zed` (or select "Zed" from the install menu).
2. Observe the pacman error and that neither `zed` nor `omazed` end up installed.

## System details

- `omarchy version`: 4.0.0.r2120.g66a33c3-1
- Architecture: aarch64
- `ldd --version`: glibc 2.43
- `pacman -Si zed` on this system: `error: package 'zed' was not found`
- `pacman -Si omazed` on this system: succeeds, `Architecture: any`, from repo `omarchy`

## Workaround used

1. Installed Zed manually via `curl -f https://zed.dev/install.sh | sh` (works fine on aarch64).
2. Installed `omazed` separately: `sudo pacman -S --noconfirm --needed omazed`.
3. Ran `omazed setup` to wire up theme sync.