Viral links served in place, not redirected: Facebook follows redirects and og:url, so every share was losing the member's name; og:url now carries the ref, canonical stays clean; QA walk updated

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

qa/walk.mjs

@@ -120,13 +120,17 @@ if (MODE === 'member' || MODE === 'all') {
   if (!/^https:\/\/instantadpay\.com\/.*[?&]ref=[a-z0-9_]+$/i.test(vl)) note('bug', L + 'promo/viral', 'builder link not rendered: ' + vl);
   const me = await page.evaluate(() => fetch('/api/me').then(r => r.json()));
   const tok = me.username || me.refCode;
-  const rr = await page.request.get(LOCAL + '/blog?ref=' + tok + '&x=1', { maxRedirects: 0 });
+  // served in place (no redirect: Facebook drops the name otherwise), cookie on the response, og:url carries the ref
+  const rr = await page.request.get(LOCAL + '/?ref=' + tok + '&x=1', { maxRedirects: 0 });
   const sc = (rr.headersArray().filter(h => h.name.toLowerCase() === 'set-cookie').map(h => h.value)).join('; ');
-  if (rr.status() !== 302 || rr.headers()['location'] !== '/blog?x=1') note('bug', L + 'viral/redirect', 'expected 302 to /blog?x=1, got ' + rr.status() + ' ' + rr.headers()['location']);
+  const rb = await rr.text();
+  if (rr.status() !== 200 || !/<title>/.test(rb)) note('bug', L + 'viral/inplace', 'expected the page at the decorated address, got ' + rr.status());
   if (!new RegExp('iap\\.sponsor=' + tok + ';').test(sc) || !/iap\.angle=page;/.test(sc)) note('bug', L + 'viral/cookie', 'sponsor/angle cookie not set: ' + sc);
+  if (!new RegExp('property="og:url" content="[^"]*[?&]ref=' + tok + '"').test(rb)) note('bug', L + 'viral/og', 'og:url does not carry the ref');
   const ru = await page.request.get(LOCAL + '/?ref=nobody_zz9', { maxRedirects: 0 });
   const su = (ru.headersArray().filter(h => h.name.toLowerCase() === 'set-cookie').map(h => h.value)).join('; ');
-  if (ru.status() !== 302 || /iap\.sponsor=/.test(su)) note('bug', L + 'viral/unknown', 'unknown ref must redirect without a sponsor cookie: ' + ru.status() + ' ' + su);
+  const ub = await ru.text();
+  if (ru.status() !== 200 || /iap\.sponsor=/.test(su) || /ref=nobody_zz9/.test(ub)) note('bug', L + 'viral/unknown', 'unknown ref must serve the plain page with no cookie and a clean og:url: ' + ru.status() + ' ' + su);
   const rj = await page.request.get(LOCAL + '/join/' + tok + '?ref=' + tok, { maxRedirects: 0 });
   if (rj.status() !== 200) note('bug', L + 'viral/join', '/join keeps its own ?ref handling, got ' + rj.status());
   console.log('ok viral links: builder + redirect + cookie');

server.js

@@ -1078,8 +1078,10 @@ const server = http.createServer(async (req, res) => {
     if (req.method === 'GET' && (TRAFFIC_PAGES.has(p) || /^\/(join|from|wall|blog)\/[^/]+$/.test(p))) traffic.hit(p.startsWith('/blog/') ? '/blog/*' : p, req.headers.referer, req.headers['user-agent']);
     // -- viral links (Marty, 2026-09-21): ANY public page + ?ref=<username|code|id> is that member's
     //    referral link. Same 30-day last-touch sponsor cookie as /join, the view counts under the
-    //    "page" hook in link stats, then a redirect to the clean URL so canonical links stay clean
-    //    for search engines. /join, /from and the APIs keep their own meaning of ?ref.
+    //    "page" hook in link stats. Served IN PLACE, not redirected (2026-09-21): Facebook's crawler follows
+    //    redirects and canonicalizes a share to og:url, so the redirect (and a clean og:url) dropped the member's
+    //    name from every share. og:url now carries the ref; rel=canonical stays clean for search engines.
+    //    /join, /from and the APIs keep their own meaning of ?ref.
     if ((req.method === 'GET' || req.method === 'HEAD') && u.searchParams.has('ref') && !p.startsWith('/api/') && !p.startsWith('/admin') && !/^\/(join|from)\//.test(p) && !/\.[a-z0-9]{2,5}$/i.test(p)) {
       const raw = String(u.searchParams.get('ref') || '').trim().toLowerCase().slice(0, 40);
       const tok = JOIN_ALIASES[raw] || raw;
@@ -1095,8 +1097,25 @@ const server = http.createServer(async (req, res) => {
         if (!parseCookies(req)['iap.ref']) set.push('iap.ref=' + encodeURIComponent(coach.refHost(req.headers.referer)) + cookieTail); // first-touch source
         if (req.method === 'GET') coach.recordView(tok, 'page', req.headers.referer);
       }
-      res.writeHead(302, baseHeaders(Object.assign({ Location: clean, 'Cache-Control': 'no-store' }, set.length ? { 'Set-Cookie': set } : {})));
-      return res.end();
+      if (known) {
+        const wh = res.writeHead.bind(res); let html = false;
+        res.writeHead = function (code, headers) {
+          headers = Object.assign({}, headers || {});
+          if (set.length) headers['Set-Cookie'] = [].concat(headers['Set-Cookie'] || [], set);
+          html = /text\/html/i.test(String(headers['Content-Type'] || '')); if (html) delete headers['Content-Length'];
+          return wh(code, headers);
+        };
+        const end = res.end.bind(res);
+        res.end = function (chunk, enc, cb) {
+          if (html && chunk) {
+            let s = Buffer.isBuffer(chunk) ? chunk.toString('utf8') : String(chunk);
+            s = s.replace(/(<meta property="og:url" content=")([^"]*)(")/, (m, a, url, c) => a + url + (url.includes('?') ? '&' : '?') + 'ref=' + encodeURIComponent(tok) + c);
+            return end(s, 'utf8', cb);
+          }
+          return end(chunk, enc, cb);
+        };
+      }
+      req.url = clean; // the routes below see the clean path; u already has the ref removed
     }
     // -- join links: /join/<memberId or share code> — LAST-touch cookie (Marty,
     //    2026-09-10): the link a visitor opened most recently is the sponsor shown