Point docs links at datahub.arcadiascience.com/docs

[wasimxyz]

Summary

The docs site now serves under /docs on the product's domain via Vercel Microfrontends (#128, Arcadia-Science/data-hub-docs#5), so this moves every reference off the old arcadia-data-hub-docs.vercel.app deployment and fixes two link bugs that surfaced after the move.

• Repoint the docs host in the READMEs, AGENTS.md, developer-docs/, and the watcher package metadata to https://datahub.arcadiascience.com/docs. Home links now target /docs (the docs landing) rather than the apex, which is the product.
• Make the docs origin client-safe. web/lib/docs.ts now reads NEXT_PUBLIC_DOCS_BASE_URL so it inlines into the client bundle. The Docs link in the sidebar user menu is a Client Component, where the old non-public DOCS_BASE_URL resolved to undefined and silently fell back to the hardcoded URL — which is why setting the env var in Vercel had no effect.
• Add DOCS_URL (<origin>/docs) for the bare "Docs" links, which otherwise pointed at the product root after the domain move, and fix the login page's Quickstart link to /docs/quickstart (getting-started doesn't exist). adding-an-instrument and managing-tokens were verified against the docs content.

The two microfrontends.json development.fallback values were intentionally left as arcadia-data-hub-docs.vercel.app — those are functional local-dev routing config pointing at the docs child's own deployment.

Follow-up (dashboard, not code)

• Rename the Vercel env var DOCS_BASE_URL → NEXT_PUBLIC_DOCS_BASE_URL (same value) and redeploy so it can override the fallback. The fallback is already correct, so links work without it.

Test plan

• make check-all
• Sidebar user-menu Docs link opens https://datahub.arcadiascience.com/docs
• Login page Docs → /docs, Quickstart → /docs/quickstart (both resolve, no 404)

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Project	Deployment	Actions	Updated (UTC)
data-hub	Ready	Preview, Comment	Jul 8, 2026 6:35pm