Professionalize ARSAS public repository and product website

[masarray]

Summary

Repositions ARSAS as a professional public IEC 61850 engineering project and establishes a clear product direction toward one unified workstation for MMS, reporting, GOOSE, file transfer, Sampled Values, SCL engineering, diagnostics, and guarded control.

What changed

• Rebuilt the README around the ARSAS name and the current masarray/arsas repository.
• Added a maturity-based capability matrix that separates available, engineering-preview, and roadmap functionality.
• Added ROADMAP.md with definitions of done for file transfer, production-grade Sampled Values, full SCL generation, unified test evidence, and maintainability.
• Added NOTICE.md to clarify GPL community licensing, commercial licensing, trademarks, third-party components, and operational boundaries.
• Added CITATION.cff for professional software citation and discovery.
• Expanded project/package metadata and IEC 61850 search keywords.
• Rebuilt the GitHub Pages landing page and capability, control, architecture, roadmap, and 404 pages.
• Corrected all canonical, Open Graph, schema.org, sitemap, robots, manifest, repository, issue, license, and clone URLs from the legacy repository name to arsas.
• Updated landing validation to check the new canonical root, roadmap page, sitemap coverage, and legacy-brand leakage.
• Updated visible GitHub Actions and artifact branding from ArIED to ARSAS.

Product impact

The repository now presents one credible narrative:

• Available: MMS discovery, reporting, multi-IED monitoring, GOOSE subscriber, fault-record file transfer, Smart Control, SCL-assisted workflows, SOE, diagnostics, and project persistence.
• Engineering preview: Sampled Values / SMV workflow.
• Roadmap: full visual SCL generation and a unified FAT/SAT/commissioning evidence workspace.

The documentation intentionally avoids claiming formal conformance, universal interoperability, functional-safety certification, cybersecurity approval, or switching authority.

Validation

• Existing Pages validation remains active and now includes roadmap.html and the https://masarray.github.io/arsas/ canonical root.
• Existing Windows build, engine compatibility, UX invariants, packaging, and license-boundary checks remain active.
• XML/package metadata syntax was sanity-checked locally.

Review notes

This is a documentation, website, SEO, legal-clarity, and CI-branding change. It does not modify IEC 61850 runtime behavior or protocol implementation.

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