### System details

Intel i9-12900K, NVIDIA RTX 3070 Ti, Omarchy 4.0.3-1 (Quattro), imv 5.0.1-2

Not hardware specific — the cause is a packaged file, so this reproduces on any install.

### What's wrong?

Opening an image from a file manager (or `xdg-open`) gives imv a one-image playlist, so Left/Right (prev/next) do nothing. Up/Down still zoom, which makes it look like the arrow keys are half-broken rather than like there's nothing to navigate to.

**Cause:** `applications/imv.desktop` in this repo — installed to `~/.local/share/applications/imv.desktop` — uses:

```
Exec=imv %F
```

A file manager passes only the file you clicked, so imv loads exactly that one image. `imv` does not scan the containing directory on its own.

**Fix:** the imv package already ships `/usr/bin/imv-dir` for exactly this:

```sh
#!/bin/sh -efu
if [ $# -ge 2 ]; then
  exec imv "$@"
else
  exec imv -n "$1" "$(dirname "$1")"
fi
```

So `applications/imv.desktop` just needs:

```
Exec=imv-dir %F
```

That opens the whole containing folder and starts on the clicked image, and passes a multi-file selection through unchanged. Existing installs would also need a migration, since the file is copied into `~/.local/share/applications/` at install time.

### Steps to reproduce

1. Put two or more images in a folder.
2. Open one of them from Nautilus (or `xdg-open image.jpg`).
3. Press Left or Right — nothing happens. Press Up or Down — zoom works.
4. `imv *.jpg` from a terminal in that folder — arrows work, confirming the binds are fine and the playlist is the problem.

### Note on #4050

This was reported in #4050 and closed with "Arrow keys only work when you open multiple images at once." That's accurate about imv's behaviour but reads as working-as-intended, and three people commented afterwards that it still isn't what they expect from an image viewer. Opening a folder's worth of images from one click is standard behaviour (eog, gwenview, feh via `feh .`), and `imv-dir` exists upstream specifically to provide it, so this looks like a one-line packaging fix rather than a user expectation problem.