Restore Speedle GitHub Pages homepage

[caiwl]

Summary

• restore the complete Speedle homepage from the last published 2020 version
• remove the 2024 redirect from speedle.io to the GitHub repository

Validation

• restored file matches commit bd4ff4c after line-ending normalization
• all 74 local assets referenced by the homepage exist
• GitHub Pages is configured to publish master:/docs with speedle.io as its custom domain
• public DNS A/AAAA records resolve to GitHub Pages and www.speedle.io aliases teramoby.github.io

Follow-up

GitHub Pages currently reports https_enforced=false; HTTPS enforcement can be enabled separately after this is merged.

[github-actions]

Ark ReviewBot review

Verdict: No actionable findings

Findings

No actionable findings.

What looks good

• The change is confined to docs/index.html and replaces a bare meta-refresh redirect with a complete static landing page; no Go source, policy evaluation, PMS/ADS, spctl, or store code is touched, so authorization behavior is unaffected.
• External links (GitHub, Medium, Slack invite, UPL license) use HTTPS; no credentials, tokens, or secrets are introduced.
• The embedded favicon is a data: image URI, avoiding an extra third-party request.
• The previous redirect target (https://github.com/teramoby/speedle-plus) is preserved as visible navigation links, so users landing on the page can still reach the maintained repository.

Validation gaps

• Several stylesheet/script references (/css/*.css, /js/kube.js, /js/master.js, etc.) and images (/img/speedle/*) are not part of this diff; static review cannot confirm these assets exist in the site output, so broken-resource risk cannot be ruled out from the supplied material.
• The diff includes a Slack shared-invite URL; whether that invite token is still valid or intended for long-term public exposure cannot be verified statically.
• The language selector links (/zh) and internal links (/quick-start/, /docs/...) point to pages not shown in the diff; their existence is a deployment-time concern only.

— Ark ReviewBot

Reviewed commit: 808c75c1aa5cddaaa47ccb3f6de08624879087d8