fix(mango_layouts): use correct mmsg syntax for layout retrieval and dispatch

[DNI9]

Plugin

• Id: ezequiel/mango_layouts
• New plugin
• Update to an existing plugin (version bumped in plugin.toml)

What it does

Fixes broken mmsg IPC commands. Replaces invalid mmsg get all-monitors | jq with mmsg -g | awk to parse active monitor layout, and fixes mmsg dispatch to mmsg -d setlayout.

External dependencies

mmsg, awk, jq (existing dependencies).

Testing

Tested reading the layout and updating it via mmsg commands.

• Tested on Niri
• Tested on Hyprland
• Tested on Sway
• Tested on another compositor: MangoWC
• Noctalia version tested against: 5.0.0
• Plugin API level: 14

Screenshots / Videos

N/A - bug fix for background command

Checklist

• The directory name matches the part of id after the / in plugin.toml exactly.
• It ships plugin.toml, README.md, thumbnail.webp, and translations/en.json.
• README.md follows the README template, documents every entry id and dependency, and includes exact panel IPC commands and launcher prefixes where applicable.
• I created thumbnail.webp with the thumbnail generator.
• version follows semver and is bumped in this PR; plugin_api is the oldest API level this plugin requires.
• Every non-English translation in this PR uses a locale supported by Noctalia core, and I can read, write, and understand that language well enough to review and maintain it (no unreviewed machine/LLM translations).
• I did not edit catalog.toml; CI generates it.
• This PR touches exactly one plugin directory.

Code review attestation

• The code is readable and not obfuscated, minified, or generated.
• It does not download and execute remote code.
• Every network call, filesystem write, and spawned process is something the description above accounts for.
• I have the right to publish this code under the license declared in plugin.toml.

[github-actions]

This pull request was automatically closed because its description no longer contains
every part of the pull request template
that this repository requires.

Missing:

• the template marker line <!-- noctalia-pr-template:v1 -->
• the ## Plugin heading
• the ## What it does heading
• the ## External dependencies heading
• the ## Testing heading
• the ## Screenshots / Videos heading
• the ## Checklist heading
• the ## Code review attestation heading
• the - **Id:** field
• the - **Noctalia version tested against:** field
• the - **Plugin API level:** field
• the checklist entry: New plugin
• the checklist entry: Update to an existing plugin (version bumped in plugin.toml)
• the checklist entry: Tested on Niri
• the checklist entry: Tested on Hyprland
• the checklist entry: Tested on Sway
• the checklist entry: Tested on another compositor:
• the checklist entry: The directory name matches the part of id after the / in plugin.toml exactly.
• the checklist entry: It ships plugin.toml, README.md, thumbnail.webp, and translations/en.json.
• the checklist entry: README.md follows the README template, documents every entry id and dependency, and includes exact panel IPC commands and launcher prefixes where applicable.
• the checklist entry: I created thumbnail.webp with the thumbnail generator.
• the checklist entry: version follows semver and is bumped in this PR; plugin_api is the oldest API level this plugin requires.
• the checklist entry: Every non-English translation in this PR uses a locale supported by Noctalia core, and I can read, write, and understand that language well enough to review and maintain it (no unreviewed machine/LLM translations).
• the checklist entry: I did not edit catalog.toml; CI generates it.
• the checklist entry: This PR touches exactly one plugin directory.
• the checklist entry: The code is readable and not obfuscated, minified, or generated.
• the checklist entry: It does not download and execute remote code.
• the checklist entry: Every network call, filesystem write, and spawned process is something the description above accounts for.
• the checklist entry: I have the right to publish this code under the license declared in plugin.toml.
• exactly one checked plugin type: New plugin or Update to an existing plugin
• at least one checked compositor testing entry

Please add the items listed above back to the description, keeping their exact wording, then
reopen the pull request. Reopening re-runs this check. Draft pull requests may leave boxes
unchecked. Before a pull request is ready for review, exactly one plugin type, at least one
tested compositor, and every item under Checklist and Code review attestation must be checked.

[github-actions]

CC @ezequielgk