Use common Super Linter

[LeoColomb]

Pre-requisites

• I have read the Contributing Guidelines
• I am using AI and have read the AI Policy

Change Description

This pull request enables Super Linter workflow on this repository.
It will also bring its fixer feature, where fixing fixable linting and formatting issues on the fly.
This requires YOURLS/.github#75.

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	website	c4a72bf	Commit Preview URL Branch Preview URL	May 17 2026, 09:30 PM

[dgw]

This needs changes to the required status checks, naturally.

Are you planning to replace the lint and format actions in package.json with Super Linter equivalents eventually? It supports running locally, though needs a container engine. https://github.com/super-linter/super-linter/blob/main/docs/run-linter-locally.md

Maybe something lightweight like lilipod would work in lieu of full-fat docker/podman/etc. but no matter what it shouldn't be too bad getting the necessary stuff set up in devcontainer.