Re-platform both microsites onto the new aws website archetype

[jeffreyaven]

Applies the new microsite pattern from stackql-registry/stackql-provider-aws (stackql_aws_provider/website, stackql-provider branch) to both sites in this repo, per request — deployment vector notwithstanding (this repo stays on Netlify).

What changed (both sites)

• Thin config + vendored shared config: docusaurus.config.js is now a small wrapper calling createConfig from ./.shared-config/index.js; stackql/docusaurus-config@main is shallow-cloned at build time via yarn vendor-config (wired as prestart/prebuild), and .shared-config/ is gitignored — never committed. provider.js carries the site identity (providerName/providerTitle), consumed by both the config and sidebars.js.
• Docusaurus ^3.10.1 with @docusaurus/faster (future: {v4, faster}), plugin-ideal-image, theme-mermaid, and the archetype's overrides/resolutions block. One addition on top of the archetype: sharp pinned ^0.33 (plugin-ideal-image resolves sharp 0.32, whose GitHub-releases binary download fails in restricted environments; 0.33+ ships prebuilt npm packages).
• src/static/theme assets replaced with the archetype's (registry-branded logo override, global.css, TSX footer theme, site.webmanifest, favicon set); the old databricks-derived src/pages/* redirect stubs are gone — the shared config's redirects plugin now provides /providers/*, /install, /blog, etc.
• Monorepo fix: createConfig derives projectName/editUrl as stackql-provider-<name-sans-underscores> (→ stackql-provider-anthropicadmin), which is wrong for this two-provider repo. Both configs post-mutate projectName = 'stackql-provider-anthropic' and the per-site docs.editUrl. The slug-derived site URL (anthropic-admin-provider.stackql.io from anthropic_admin) is correct as-is.
• Not carried over: static/CNAME and .nojekyll (GitHub Pages deployment artifacts); per-site netlify.toml retained.

Verification

• Both sites yarn build clean (zero warnings); the prebuild vendor-config clone runs as part of the build.
• Admin sitemap spot-checked: all service/resource routes emitted under https://anthropic-admin-provider.stackql.io.
• docgen frontmatter's /img/stackql-<provider>-provider-featured-image.png references satisfied by aliasing stackql-cover.png per site.
• CLAUDE.md website section updated with the archetype findings (vendor-config mechanics, sharp pin, monorepo projectName/editUrl exception).

🤖 Generated with Claude Code

https://claude.ai/code/session_01M5qQSBivc7W458yqJG9i5a

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