feature(w-engine): add page gestion

[Tadomika-Ari]

Plugin

• Id: <author>/<plugin>

• New plugin
• Update to an existing plugin (version bumped in plugin.toml)

What it does

Add a page management feature for limited wallpaper viewing.

This update fixes a crash that occurs for users who have a large number of wallpapers in the Steam Workshop and the plugin crashes after (for example) attempting to load 200 wallpapers.

To fix this, I added a function that checks whether the wallpaper is within the trigger zone while adding it in the loop. I check if the wallpaper number falls within the range of MAX_WALLPAPER_SHOW * PAGE_NUMBER and MAX_WALLPAPER * PAGE_NUMBER - MAX_WALLPAPER_SHOW.

I also added a limit to prevent navigation when no more pages are available.

Note: #390 (comment)

External dependencies

Testing

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

Screenshots / Videos

Checklist

Ready-for-review requirement: Every box in this section must be checked. If any statement is not true, keep the
pull request as Draft. An explanation does not replace a required check.

• 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

Plugins run as trusted, unsandboxed Luau in the user's session. Confirm:
Ready-for-review requirement: Every attestation below must be checked.

• 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.