1.2 Update

[Atmois]

Summary by Sourcery

Restructure the MediaWiki deployment into a generic, env‑driven containerized wiki image with modular configs and task automation, and document how to deploy and operate it.

New Features:

• Add comprehensive deployment, environment variable, directory layout, and just-command documentation for running the wiki in local, staging, and production environments.
• Introduce modular Justfile structure with commands for environment setup, container lifecycle management, MediaWiki initialization, schema updates, status checks, and OpenSearch indexing workflows.
• Add configurable integrations for S3-backed file storage, Cloudflare Turnstile CAPTCHA, Discord notifications, OpenID Connect SSO, CirrusSearch/OpenSearch search backend, and other MediaWiki extensions.

Enhancements:

• Refactor Dockerfile and file layout to use a unified /var/www/wiki structure, php-extension-installer, additional system dependencies, and improved sitemap/cache handling.
• Generalize core MediaWiki configuration to use environment variables for SMTP, HTTPS behaviour, cache directories, diff engine, and CDN/IP handling, and switch Redis references to Valkey.
• Rename and reorganize configuration, composer, and NGINX files under wiki/, and update project metadata and licensing headers to reflect All Things Linux and contributors.
• Add PHPCS configuration to enforce PSR-12 on wiki PHP code and improve minor PHP style/lint issues across config files.

Build:

• Add a Docker Build GitHub Actions workflow to ensure the MediaWiki image builds successfully on pull requests.

CI:

• Add GitHub Actions workflows to lint PHP with PHPCS/PHPCBF, lint Python with Pylint, and lint the Dockerfile with Hadolint, including automatic fixing and commit of PHPCS issues on non-fork PRs.

Documentation:

• Replace the placeholder README with detailed deployment instructions, environment variable reference, project layout diagrams, just-command reference, administrator notes, and upstream dependency attribution.