Add invite and promo landing pages

.github/workflows/dev.yaml

@@ -36,6 +36,8 @@ jobs:
           CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
           CLOUDFLARE_ACCOUNT_ID: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
           COMMIT_MSG: ${{ github.event.head_commit.message }}
+        # wrangler looks for ./functions in the cwd (repo root), sibling to
+        # public/. That middleware injects Smart App Banner app-argument.
         run: |
           wrangler pages deploy public \
             --project-name=realunit-web-dev \

.github/workflows/prd.yaml

@@ -36,6 +36,8 @@ jobs:
           CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
           CLOUDFLARE_ACCOUNT_ID: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
           COMMIT_MSG: ${{ github.event.head_commit.message }}
+        # wrangler looks for ./functions in the cwd (repo root), sibling to
+        # public/. That middleware injects Smart App Banner app-argument.
         run: |
           wrangler pages deploy public \
             --project-name=realunit-web \

CONTRIBUTING.md

@@ -10,6 +10,30 @@ This repo is the **realunit.app** website — public, static. See the
   served. The dev dependencies exist **only** for the quality gates below
   (formatting, HTML validation, unit tests, screenshots); nothing compiles or
   bundles the site.
+- **Invite/promo HTML rewrite is banner, canonical, and store handoff.** Safari,
+  Play, and share crawlers snapshot `apple-itunes-app`, `og:url`,
+  `rel=canonical`, `twitter:url`, `og:title`, `twitter:title`,
+  `og:description`, `twitter:description`, `og:image:alt`, `twitter:image:alt`,
+  `og:locale`, `og:site_name`, html `lang`, the Play
+  referrer, android-app / ios-app alternate links, Facebook App Links
+  (`al:ios:url` / `al:android:url` are `realunit-wallet://…`; `al:android:class`
+  is `swiss.realunit.app.MainActivity`; `al:web:url`
+  is the HTTPS landing), and Twitter App Card `twitter:app:url:iphone` /
+  `twitter:app:url:ipad` / `twitter:app:url:googleplay` (same custom scheme)
+  from the HTML bytes before
+  `/js/invite-banner.js` / `invite.js` run, so `functions/_middleware.js`
+  (repo-root `functions/`, picked up by `wrangler pages deploy public`) and
+  `scripts/dev-server.mjs` inject those from the request URL (www folded onto
+  the apex). The campaign code is in `og:title` / `twitter:title` /
+  `og:description` / `og:image:alt` / `twitter:image:alt`; `?lang=en` sets English title/description/alt and `og:locale`;
+  invitee names wait for lookup JS. The committed
+  `public/invite` and `public/promo` HTML stay generic (`app-id` only, og:url /
+  twitter:url `/invite/` or `/promo/`, `og:site_name` RealUnit, generic titles and descriptions, Play
+  href without referrer, no `al:*`, no `twitter:app:*`, `format-detection`
+  `telephone=no, date=no` so iOS does not turn the code or Aktionstext date
+  into a link, `x-apple-data-detectors="false"` on `#ok-code` / `#ok-body`
+  because Safari re-scans JS-inserted text, no inline
+  `<script>`). Do not add other Pages Functions or server-side rendering.
 - **Keep the page self-contained.** `public/_headers` sets a strict CSP:
   - No inline `<script>` and no external resources of any kind (scripts, styles,
     images, fonts, fetch). Load JS from **same-origin** files instead.

README.md

@@ -4,12 +4,59 @@ The website served at **realunit.app**. Public, static.
 
 ## v1 (current)
 
-A minimal landing page — one hero image from the RealUnit app plus the three download buttons.
+A minimal landing page — one hero image from the RealUnit app plus the store buttons —
+plus invite/promo landings and the Aktionariat confirm / account-merge flows.
 Deliberately **without a build toolchain**: plain HTML + assets in `public/`,
 uploaded to Cloudflare Pages.
 
 - `public/index.html` — landing, shows `assets/hero.jpg` centered on a light background
   with the store/download buttons below it
+- `public/invite/` and `public/promo/` — referral and campaign landings; look up
+  `GET /v1/realunit/referral/code/:code` (contract:
+  [JonnyLuca/dfx-referral-api](https://github.com/JonnyLuca/dfx-referral-api)),
+  open `realunit-wallet://invite|promo/{code}`,
+  and pass the code as a Play install referrer. Path and query codes
+  (including ads/Play `utm_content` / `referrer` and Facebook/Google/Outlook
+  `u=` / `q=` / `url=` / email `link=` wrapping `invite=` or a landing URL, with or without
+  `https://`; a campaign name in `utm_content` does not hide a later wrapper key;
+  an empty or foreign `code=` does not hide a later `invite=` / `promo=`;
+  short `ios-app://` alternate links; Proofpoint URL Defense and Outlook Safe Links wrapping a
+  RealUnit landing; a foreign `https://` URL is not a code) are
+  uppercased, stripped of messenger zero-width/fullwidth characters and
+  trailing sentence punct (`!`, `?`, `/`, …), and capped at 32 like the
+  API lookup — including in the crawler HTML bytes Safari snapshots.
+  The re-tap hint is iOS-only;
+  Android keeps the code via the Play referrer. An App Store / Play / CTA tap
+  also copies the code (user gesture) so an iOS badge install can still be
+  pasted at registration. iOS `format-detection` is `telephone=no, date=no`
+  so Safari does not turn the campaign code or Aktionstext date into a link.
+  `#ok-code` and `#ok-body` also set `x-apple-data-detectors="false"` because
+  those strings are written after load.
+  `www.realunit.app/invite|promo` is HTTP 200 (not a
+  301 to the apex) so Universal Links and the Smart App Banner keep the host.
+  The Smart App Banner `app-argument`, `og:url`, `rel=canonical`,
+  `twitter:url`, `og:title`, `twitter:title`, `og:description`,
+  `twitter:description`, `og:image:alt`, `twitter:image:alt`, `og:locale`,
+  `og:site_name`, Play install referrer,
+  android-app / ios-app alternate links, Facebook App Links
+  (`al:ios:url` / `al:android:url` are `realunit-wallet://…`; `al:android:class`
+  is `swiss.realunit.app.MainActivity`; `al:web:url`
+  is the HTTPS landing), and Twitter App Card `twitter:app:url:*` (same
+  custom scheme; `twitter:app:country` is CH) are injected
+  into the HTML bytes from the request URL (`functions/_middleware.js` on
+  Cloudflare Pages, and the local dev-server) so Safari, Play, WhatsApp, X,
+  and share crawlers can snapshot them before JS. `og:title`, `og:description`,
+  and image alt name the campaign code; `?lang=en` sets English copy and `og:locale=en_GB`;
+  invitee names wait for lookup JS. `/js/invite-banner.js` in `<head>`
+  is the CSP-safe JS fallback — Cloudflare Pages CSP blocks inline `<script>`.
+- `public/.well-known/apple-app-site-association` and `assetlinks.json` — Universal
+  Links / App Links for `/invite/*` and `/promo/*` on apex and www (HTTP 200,
+  no 301). `sha256_cert_fingerprints`
+  lists (1) the v2 signing cert of GitHub release APK `realunit-1.2.17.apk`
+  (`O=DFX AG`, `CN=Konstantin Ullrich`) and (2) the Android debug keystore
+  used by the `pixel_jonny` AVD (`C=US, O=Android, CN=Android Debug`) so
+  debug App Links against `dev.realunit.app` verify. If Play App Signing uses
+  a different app-signing key, add that SHA-256 from Play Console beside them.
 - `public/platform.js` — enlarges the store button matching the visitor's platform
   (iOS → App Store, Android → Play Store); without JS all buttons stay equal-size
 - `public/assets/hero.jpg` — hero (source: the app's splash background)
@@ -40,10 +87,7 @@ projects in the DNS/deployment configuration. The `handbook.` subdomain is unaff
 
 ## Roadmap (v2+)
 
-- `/confirm-aktionariat` — guided Aktionariat address confirmation (calls `api.dfx.swiss`)
-- `/account-merge` — confirms adding a wallet address to the existing account (calls the public DFX API)
 - Legal pages — rendered from the app's `assets/legal/*.md` (build-time fetch, single source)
-- Universal Links / App Links (`/.well-known/*`)
 
 From v2 a build toolchain (Astro) is introduced; the plain-image landing stays the home page.
 

functions/_middleware.js

@@ -0,0 +1,32 @@
+/**
+ * Rewrite invite/promo HTML so apple-itunes-app already carries
+ * app-argument, og:url / canonical / twitter:url already name the
+ * landing URL, og:title / twitter:title / og:description already name
+ * the campaign code, ?lang=en already sets html lang / og:locale, and
+ * Facebook App Links are present. Safari and share
+ * crawlers snapshot those from the HTML bytes before
+ * /js/invite-banner.js and invite.js run.
+ * public/ stays generic; this is not a site-wide renderer.
+ */
+import { injectLandingFromRequestUrl, shouldRewriteItunesBanner } from './lib/itunes-banner.js';
+
+export async function onRequest(context) {
+  const url = new URL(context.request.url);
+  if (!shouldRewriteItunesBanner(url.pathname)) {
+    return context.next();
+  }
+  const response = await context.next();
+  const type = response.headers.get('content-type') || '';
+  if (context.request.method !== 'GET' || !type.includes('text/html')) {
+    return response;
+  }
+  const html = await response.text();
+  const injected = injectLandingFromRequestUrl(html, context.request.url);
+  const headers = new Headers(response.headers);
+  headers.delete('content-length');
+  return new Response(injected, {
+    status: response.status,
+    statusText: response.statusText,
+    headers,
+  });
+}