### What happened

`omarchy plugin clone omarchy.power` produces a clone whose manifest id is
correct (`will.power`) but whose QML still declares the **source** plugin's
identifiers:

```qml
// ~/.config/omarchy/plugins/will.power/Panel.qml, straight after cloning
moduleName: "omarchy.power"
ipcTarget:  "omarchy.power"
```

Consequences observed:

- The clone registers the IPC target `omarchy.power`, the same one the stock
  plugin uses. `qs ipc … show` lists only one `omarchy.power`; the clone is not
  individually addressable, and `omarchy-shell will.power open` fails with
  "Target not found".
- The panel's own right-click action (the show-percentage toggle) calls
  `shell.updateEntryInline(root.moduleName, …)`, so it writes its setting to
  the **stock plugin's** bar entry rather than the clone's — the toggle appears
  to do nothing.

Editing both lines to the clone's id fixes everything; nothing else was needed.

### Cause

`omarchy-plugin-clone` rewrites only *file names* listed in `entryPoints` /
`omarchy.clonePaths`:

```bash
if [[ $source != "$target" ]]; then
  source_pattern=${source//./\\.}
  while IFS= read -r -d '' file; do
    sed -i "s|$source_pattern|$target|g" "$file"
  done < <(rg --files-with-matches --null --fixed-strings "$source" "$target_dir")
done < <(jq -r '[ (.entryPoints[] | {source: ., target: .}),
                  (.omarchy.clonePaths[]? | {source: .source, target: .target}) ] ...' "$manifest")
```

The loop is driven by path entries, so the plugin **id** itself is never part
of `$source`/`$target` and occurrences of it inside the copied QML are left
untouched. `update_manifest()` correctly rewrites the manifest id and records
`clonedFrom`, which makes the mismatch easy to miss.

### Expected

A cloned plugin should be self-contained: its `moduleName` / `ipcTarget` (and
any other reference to its own id) should be rewritten to the clone's id, so it
neither collides with the original nor writes settings to it.

### Suggested fix

In `omarchy-plugin-clone`, after copying, additionally rewrite the source
plugin id to the target id across the cloned tree — i.e. run the same `sed`
with `source = <source manifest id>` and `target = <target id>`, not just for
path entries.

### Steps to reproduce

1. `omarchy plugin clone omarchy.power`
2. `grep -nE '^\s*(moduleName|ipcTarget):' ~/.config/omarchy/plugins/<user>.power/Panel.qml`
   → both still read `omarchy.power`.
3. `omarchy restart shell`, then
   `qs ipc -n -p /usr/share/omarchy/shell show | grep -A1 'target .*power'`
   → only `omarchy.power` is registered.
4. Right-click the cloned battery widget to toggle the percentage → the setting
   lands on the stock plugin's bar entry.

### System

- Omarchy 4.0.4-1, omarchy-settings 4.0.4-1
- Quickshell 0.3.1-1
- Kernel 7.2.5-3-omarchy
- Google Pixelbook (Eve)