docs: migrate site to path.shmakov.tools

[sergeyshmakov]

What does this PR do?

How to test

Checklist

• Tests added or updated
• Docs updated (if public API changed)
• Commit messages follow Conventional Commits

---

Summary by cubic

Move the docs site to https://path.shmakov.tools with root-level paths (no /data-path). Updated configs, sitemap, and all internal links so README and docs point to the new domain.

• Migration
  • Update any external links/bookmarks to the new domain and root paths.
  • Changes include: docs/astro.config.mjs (site, base), docs/README links, robots.txt sitemap, issue template link, and homepage in package.json.

^{Written for commit 5158520. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 20 files

_{Re-trigger cubic}