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feat(deploy/site): serve the apex from the same Pages project, no redirect rule

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Vercel was doing the apex->www 308 itself (its "redirect to www" project
setting), so nothing about Cloudflare requires a redirect — the behaviour
just disappears with Vercel. Rather than rebuild it with a zone Redirect
Rule plus a proxied placeholder record, attach pcbjam.com as a SECOND
custom domain on pcbjam-site. Both hosts serve the site and the pages
already emit canonical=www, which is what consolidates them for search.

That drops the riskiest artefact in the migration. Redirect Rules are
zone-scoped and run BEFORE Workers/Pages routing, so a `contains` match
instead of `eq` would 308 app./editor./demo./api. to www — breaking the
product API, not just a marketing page. The sibling hosts are also the
reason this was worth avoiding rather than merely guarding.

APEX_MODE (lib/common.sh) selects the topology, defaulting to `serve`.
08-verify-prod.sh now dispatches through assert_apex: in serve mode it
requires the apex to answer 200 with no hop, to not be a stale Vercel
response, to declare canonical=www, and to expose /api/waitlist. The
`redirect` mode and 07's rules/apex phases are kept for the alternative.

08 also checks the attached domains via wrangler rather than the REST API,
so the whole serve-mode path needs only `wrangler login` — no zone scopes
at all.

Comments that explained themselves via the old redirect are corrected:
astro.config.mjs, web/standalone/src/lib/config.ts and
scripts/deploy/build-demo.mjs. The demo keeps posting to www — not because
the apex redirects, but because a CORS preflight cannot follow one, so
aiming at a host that might ever redirect is a latent breakage.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LAmkjM7okPdScp9XLW1JVr
This commit is contained in:
Viktor Vaczi 2026-07-27 14:34:16 +02:00
commit df38ebafb7
7 changed files with 138 additions and 50 deletions
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6
web/standalone/src/lib/config.ts
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@ -64,8 +64,10 @@ export const APP_URL =
* Where the in-editor waitlist form POSTs. The demo is a fully static deploy with
* no backend, so it cross-posts to the landing site's serverless endpoint (which
* sends CORS for this origin). Same JSON contract as site/src/pages/api/waitlist.ts.
* Targets the canonical www host: the apex 308-redirects to www on Vercel, and a
* CORS preflight can't follow a redirect (so the apex would break the POST).
* Targets the canonical www host. The apex now serves the same Pages project
* rather than redirecting, so either would work — but keep www: it is the
* canonical host, and a CORS preflight cannot follow a redirect, so pointing at
* a host that might ever redirect is a latent breakage.
*/
export const WAITLIST_URL =
import.meta.env.VITE_WAITLIST_URL || "https://www.pcbjam.com/api/waitlist";