Newsletter signup banner, modal and branded Mailcoach pages

[simonhamp]

We're not getting enough newsletter signups. This turns the site banner into a 10% off offer for subscribing, and keeps the whole signup flow on nativephp.com instead of handing people off to Mailcoach's default pages.

What changed

Banner — x-newsletter-banner takes the site banner slot: "Celebrate SuperNative! Join the newsletter. Get 10% off everything". Clicking it opens the signup modal rather than navigating away.

Modal — x-newsletter-modal is mounted once in the layout and opened from anywhere by dispatching an open-newsletter-modal window event, so the banner, the footer card and the unsubscribed page all trigger the same thing. It posts straight to the Mailcoach list with the pet honeypot submitted empty, and carries redirect_after_subscription_pending / _subscribed / _already_subscribed pointing at our own pages.

Footer card — now a button opening the same modal instead of linking off-site to /newsletter, with copy leading on the discount code.

Four branded pages, built from a shared x-newsletter-status component and noindexed, since they're flow endpoints rather than content:

Mailcoach setting	URL
Confirm subscription	/newsletter/confirm
Someone subscribed	/newsletter/subscribed
Email was already subscribed	/newsletter/already-subscribed
Someone unsubscribed	/newsletter/unsubscribed

Config — services.mailcoach.newsletter_subscribe_url and services.mailcoach.honeypot_field, both env-overridable, defaulting to the live list and pet.

Before this ships

Those four URLs need pasting into the list's redirect settings in Mailcoach. The modal covers the immediate post-submit hop itself, but the "subscribed" and "unsubscribed" redirects fire from links inside emails, so only the list settings can drive them.

Notes

• The SuperNative banner is what this replaces. It stays in the repo alongside the seven other retired banner components, so swapping back is a one-line change. Its test now covers the component in isolation and asserts it's no longer mounted — mirroring what TheVibesBannerTest did when SuperNative displaced The Vibes. No test was removed.
• Stripe: cart checkout already sets allow_promotion_codes, so a promo code from Mailcoach will redeem — except when a per-price coupon already applies, where the code path unsets it (CartController.php:575). Discounted-price customers won't be able to stack the newsletter code.
• layout.blade.php carries two incidental Prettier normalisations (class order on font-poppins, self-closing spacing on x-impersonate::banner) from formatting the file.

Testing

11 tests in NewsletterSignupTest covering the banner, the modal's Mailcoach form and all four pages, plus the rewritten SupernativeBannerTest. Also ran the 58 tests across every suite that touches the homepage, layout or footer — all green. Pint and Prettier clean.

Verified the banner and modal render in a browser, and that all four pages return 200 with the right content. I also probed the Mailcoach endpoint with an empty email to confirm it accepts a token-less cross-origin POST (302, not 419) — that creates nothing and sends no mail. A real end-to-end signup hasn't been run against the production list, so the double opt-in email and code delivery are worth one live submission once the redirect URLs are saved in Mailcoach.

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