fix(deploy): Update Vercel site configuration

[iamfj]

Summary

• Update the MkDocs site_url to https://pi-stack-ops.iamfj.xyz.
• Disable Vercel framework autodetection so the docs deploy as a static MkDocs site instead of a Python app.

Validation

• bun run check
• bun run test
• bun run pack:dry-run
• uv run mkdocs build --strict

Security checklist

• The change doesn't add install-time scripts or unexpected network access.
• The change doesn't log secrets, tokens, environment values, or raw local state.
• The change keeps filesystem writes scoped to documented paths.
• GitHub Actions permissions remain least-privilege.

[vercel]

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Project	Deployment	Actions	Updated (UTC)
pi-stack-ops	Ready	Preview, Comment	Jun 15, 2026 2:41pm