The validation step in the plugin guide (https://plugins.omarchy.org/develop.html) runs:

```
qmllint -I "$OMARCHY_PATH/shell" "$PLUGIN_DIR/BarWidget.qml" "$PLUGIN_DIR/Panel.qml"
```

It has two problems on a stock Omarchy 4.0.4 install:

### 1. `qmllint: command not found`

Arch's `qt6-declarative` (6.11.2) installs `qmllint` only to `/usr/lib/qt6/bin/qmllint`. That directory isn't on PATH, and the package ships `/usr/bin` symlinks only for `qml6`, `qmlls6`, `qmlscene6`, `qmlpreview6` and `qmleasing6`, not for `qmllint` or `qmlformat`. Omarchy doesn't add `/usr/lib/qt6/bin` to PATH either.

### 2. The import path doesn't resolve `qs.*`, so the check passes without checking anything

With the full binary path, the command exits 0, but every Omarchy import fails:

```
Warning: BarWidget.qml:3:1: Failed to import qs.Ui. Are your import paths set up properly? [import]
Warning: BarWidget.qml:60:3: WidgetButton was not found ...
Warning: Panel.qml:3:1: Failed to import qs.Commons ...
```

The modules are declared as `module qs.Ui` / `module qs.Commons` in their `qmldir` files, so qmllint looks for `<importpath>/qs/Ui/qmldir`. `$OMARCHY_PATH/shell` has `Ui/` and `Commons/` directly and no `qs/` directory. Quickshell maps `qs` to the shell root at runtime, but qmllint doesn't know about that. The result is around 26 warnings for the guide's own example, including bogus `[inheritance-cycle]` (BarWidget -> BarWidget) and `[unqualified]` warnings on `Style.*`. Because the exit code is still 0, "Both commands should exit without an error" looks like a pass even though the imports were never checked.

Even with imports resolved, the guide's own pattern leaves `[missing-property]` warnings, because `Loader.item` is `QObject`, `Ui/Panel.qml` declares `property QtObject bar`, and `Commons/Style.qml` declares `property QtObject font`. Omarchy's built-in clock plugin gets the same warnings.

### Workaround

```
mkdir -p /tmp/qs-imports && ln -sfn "$OMARCHY_PATH/shell" /tmp/qs-imports/qs
/usr/lib/qt6/bin/qmllint -I /tmp/qs-imports --missing-property info \
  "$PLUGIN_DIR/BarWidget.qml" "$PLUGIN_DIR/Panel.qml"
```

This gives 0 warnings on a correct plugin and still catches real mistakes: a misspelled property such as `tooltipTxt:` is reported as `[missing-property]`, and `Stlye.space(8)` is reported as `[unqualified]`. Add `-W 0` to make any warning fail the run. (`--missing-property disable` is too broad; it hides misspelled properties.)

### Suggested fix

- Use `/usr/lib/qt6/bin/qmllint` in the guide, or list adding it to PATH as a prerequisite.
- Fix the import path so `qs.*` resolves, for example with the `qs` symlink above.
- Or have `omarchy plugin validate` run qmllint itself with the correct binary and import directory.