For stores: how a shop lists its own deals (DEALS-LP) (#212)

ddiff --git a/server/http/pages.js b/server/http/pages.js
iindex 4ea0152..9632bb8 100644
---- a/server/http/pages.js
++++ b/server/http/pages.js
@@@ -471,6 +471,12 @@ function createPages(ctx) {
      }
  
      router.get('/at', wrap(async (req, res) => send(req, res, 200, await sellersIndexPage(), { cacheable: true })));
++    // How a shop lists its own deals (DEALS-LP): the claim is Sources' merchant opt-in.
++    router.get('/stores', (req, res) => send(req, res, 200, {
++        title: 'List your store\'s deals', decision: pageDecision('/stores'), canonical: seo.canonicalUrl(config.baseUrl, '/stores'),
++        description: 'Run a shop? Claim your domain on OpenVibe.Sources, prove it is yours, name your feed or sitemap, and your own offers appear on OpenVibe.Deals. No fee, no referral codes.',
++        body: views.storesPage({ merchantUrl: `${config.sourcesPublicUrl || 'https://sources.openvibe.network'}/merchant` }),
++    }, { cacheable: true }));
  
      async function sellerPage(seller, page = 1) {
          const want = String(seller || '').toLowerCase();
ddiff --git a/server/render/views.js b/server/render/views.js
iindex b7760ba..9113764 100644
---- a/server/render/views.js
++++ b/server/render/views.js
@@@ -444,10 +444,33 @@ ${raw(pager ? paginationHtml(pager) : '')}`;
  function sellersPage({ sellers }) {
      return html`${raw(breadcrumbsHtml([{ name: 'Deals', url: '/' }, { name: 'Shops' }]))}
  <h1>Deals by shop</h1>
--<p class="lede">Every shop with a deal here, as the deal sources name it, the most deals first.</p>
++<p class="lede">Every shop with a deal here, as the deal sources name it, the most deals first. Run a shop? <a href="/stores">List your store's deals</a>.</p>
  ${sellers.length ? html`<ul class="seller-list">${sellers.map((x) => html`<li><a href="/at/${x.slug}">${x.seller}</a> <span class="meta">${x.count} deal${x.count === 1 ? '' : 's'}</span></li>`)}</ul>` : html`<p class="empty">No shops yet.</p>`}`;
  }
  
++/**
++ * /stores: how a shop lists its own deals here (open item 140, DEALS-LP). The claim lives on OpenVibe.Sources'
++ * merchant opt-in (a domain, a proof, a feed or sitemap); its items reach Deals through the ordinary Sources import.
++ */
++function storesPage({ merchantUrl }) {
++    return html`${raw(breadcrumbsHtml([{ name: 'Deals', url: '/' }, { name: 'Shops', url: '/at' }, { name: 'For stores' }]))}
++<h1>List your store's deals</h1>
++<p class="lede">If you run a shop, your own product pages can be a deal source here. No fee, no ads, and no change to your prices: Deals shows what your pages state.</p>
++<ol class="steps">
++<li><b>Claim your domain</b> on OpenVibe.Sources' merchant page, signed in with your OpenVibe account.</li>
++<li><b>Prove it is yours</b> with a DNS TXT record (<code>_openvibe-sources.&lt;your domain&gt;</code>) or a meta tag on your home page. Sources checks again every few minutes, or when you press "Check now".</li>
++<li><b>Name your product feed or sitemap.</b> Sources reads it politely: robots.txt on every request, spaced requests, nothing your robots.txt forbids.</li>
++<li><b>Your offers appear here</b> from the structured data on your product pages (schema.org Offer: price, currency, availability, and a list price when your page states one). A person reviews each new offer before search engines see it.</li>
++</ol>
++<p><a class="button" href="${merchantUrl}">Claim your store on OpenVibe.Sources</a></p>
++<h2>What we never do</h2>
++<ul class="plain">
++<li>Change your links to add a referral code, or guess a price your page does not state.</li>
++<li>Keep listing you after you withdraw: withdrawing on Sources stops the reading, and offers that have no source left are taken down.</li>
++<li>Rank you by payment: the order on Deals is the deals' own, by heat, by ending and by when they were seen.</li>
++</ul>`;
++}
++
  /** /c/:category: active deals in one category, as their sources name it. */
  function categoryPage({ category, views: list, pager, urls, total }) {
      return html`${raw(breadcrumbsHtml([{ name: 'Deals', url: '/' }, { name: 'Categories', url: '/c' }, { name: category }]))}
@@@ -470,4 +493,4 @@ function message({ heading, text, action }) {
      return html`<h1>${heading}</h1><p>${text}</p>${action ? html`<p><a class="button" href="${action.href}">${action.label}</a></p>` : ''}`;
  }
  
--module.exports = { offerList, tabs, offerPage, productPage, submitForm, watchesPage, searchPage, modPage, storePage, sellerPage, sellersPage, categoryPage, categoriesPage, message, priceText, when, ago };
++module.exports = { storesPage, offerList, tabs, offerPage, productPage, submitForm, watchesPage, searchPage, modPage, storePage, sellerPage, sellersPage, categoryPage, categoriesPage, message, priceText, when, ago };
ddiff --git a/test/stores-page.test.js b/test/stores-page.test.js
nnew file mode 100644
iindex 0000000..45de2f3
---- /dev/null
++++ b/test/stores-page.test.js
@@@ -0,0 +1,32 @@
++'use strict';
++/**
++ * /stores (open item 140, DEALS-LP): how a shop lists its own deals here. It explains Sources' merchant opt-in
++ * (claim, proof, feed), links to it, says what Deals never does, is reachable from the shops index, and is indexable.
++ *   node test/stores-page.test.js
++ */
++const assert = require('assert');
++const { boot, check, done, robotsOf } = require('./helpers/boot');
++
++(async () => {
++    const t = await boot();
++
++    await check('/stores explains the opt-in and links to Sources\' merchant page', async () => {
++        const r = await t.get('/stores');
++        assert.strictEqual(r.status, 200, r.text);
++        assert.match(r.text, /<h1>List your store&#39;s deals<\/h1>|<h1>List your store's deals<\/h1>/);
++        assert.match(r.text, /href="https:\/\/sources\.openvibe\.network\/merchant"/);
++        assert.match(r.text, /_openvibe-sources\.&lt;your domain&gt;/, 'the DNS proof is named');
++        assert.match(r.text, /robots\.txt/);
++        assert.match(r.text, /What we never do/);
++        assert.ok(!/noindex/.test(robotsOf(r.text) || ''), 'search engines may read it');
++    });
++
++    await check('the shops index points shops to it', async () => {
++        const r = await t.get('/at');
++        assert.strictEqual(r.status, 200);
++        assert.match(r.text, /href="\/stores"/);
++    });
++
++    await t.close();
++    done();
++})().catch((e) => { console.error(e); process.exit(1); });