detectLocation() fetched http://ip-api.com over plaintext from an HTTPS
storefront. Browsers block mixed active content, so the request never
completed and auto-detect only ever took its error branch - region
detection has been dead in production, not merely insecure. The attempt
also handed every visitor's IP to a third party from the page itself.
Geo now resolves through the tenant API at {baseUrl}/geo/resolve, the
same base /regions already uses. The server reads the client IP; the
browser sends nothing and receives no third-party payload.
The endpoint is specified in BACKEND-API-REFERENCE.md and is not built
yet. Until it ships the client falls back to the manual region picker -
identical to the behaviour production already had.
Adds location.service.spec.ts: geo goes to the tenant API, no request
leaves that origin or uses http://, failure degrades to the manual
picker, and detection is not retried once attempted.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
