v0.1: replace shell-rendered site with Grav-native pages + theme

- Drop site/ + RenderSite.sh: repo now carries grav/user/pages as
  native Grav markdown pages (home/services/terms/sign/execution)
- Add knel-contract theme: inherits quark2 via stream fallback, adds
  sign.html.twig (Twig) driving the DocuSeal flow through the APISIX
  gateway; esign wiring lives in the theme yaml for forks to retarget
- CreateDocument.sh refreshes the Grav services page from the
  rendered catalogs instead of invoking the removed site renderer

Ticket: https://projects.knownelement.com/issues/924

grav/user/themes/knel-contract/blueprints.yaml

@@ -0,0 +1,6 @@
+name: knel-contract
+slug: knel-contract
+type: theme
+version: 0.1.0
+description: KNEL services contract site theme
+author: KNEL

grav/user/themes/knel-contract/knel-contract.yaml

@@ -0,0 +1,17 @@
+enabled: true
+
+# Any quark2 template not overridden here falls through to quark2
+streams:
+  schemes:
+    theme:
+      type: ReadOnlyStream
+      prefixes:
+        '':
+          - user/themes/knel-contract
+          - user/themes/quark2
+
+# E-sign wiring (forks: point these at your own gateway/template)
+esign:
+  api_url: 'https://apigw.knownelement.com/contract-sign/api/submissions'
+  sign_url: 'https://esign.knownelement.com'
+  template_id: '2'

grav/user/themes/knel-contract/templates/sign.html.twig

@@ -0,0 +1,69 @@
+{% extends 'partials/base.html.twig' %}
+
+{% block content %}
+<div class="sign-page">
+    {{ page.content|raw }}
+
+    <style>
+        .sign-page form { max-width: 32rem; }
+        .sign-page label { display: block; margin: 0.75rem 0 0.25rem; font-weight: 600; }
+        .sign-page input { display: block; width: 100%; padding: 0.5rem; border: 1px solid #ccc; border-radius: 4px; }
+        .sign-page button { margin-top: 1rem; padding: 0.6rem 1.4rem; cursor: pointer; }
+    </style>
+    <form id="esign-form">
+        <label for="esign-name">Full name</label>
+        <input type="text" id="esign-name" name="name" required>
+
+        <label for="esign-email">Email address</label>
+        <input type="email" id="esign-email" name="email" required>
+
+        <label for="esign-entity">Entity (Party 2)</label>
+        <input type="text" id="esign-entity" name="entity" required>
+
+        <button type="submit">Request signature link</button>
+    </form>
+
+    <p id="esign-status"></p>
+</div>
+
+<script>
+(function () {
+    var form = document.getElementById('esign-form');
+    var status = document.getElementById('esign-status');
+    var config = {{ grav.config.themes['knel-contract'].esign|json_encode|raw }};
+
+    form.addEventListener('submit', function (ev) {
+        ev.preventDefault();
+        status.textContent = 'Requesting signing link…';
+        var name = document.getElementById('esign-name').value;
+        var email = document.getElementById('esign-email').value;
+        var entity = document.getElementById('esign-entity').value;
+
+        fetch(config.api_url, {
+            method: 'POST',
+            headers: {'Content-Type': 'application/json'},
+            body: JSON.stringify({
+                template_id: Number(config.template_id),
+                send_email: false,
+                submitters: [
+                    {role: 'First Party', name: name, email: email},
+                    {role: 'Second Party', name: name + ' (' + entity + ')', email: email}
+                ]
+            })
+        }).then(function (r) {
+            if (!r.ok) { throw new Error('gateway returned ' + r.status); }
+            return r.json();
+        }).then(function (data) {
+            var slug = data.submitters && data.submitters[0] && data.submitters[0].slug;
+            if (slug) {
+                window.location.href = config.sign_url + '/s/' + slug;
+            } else {
+                status.textContent = 'Signing request created. Check ' + email + ' for the signing link.';
+            }
+        }).catch(function (e) {
+            status.textContent = 'Could not create the signing request (' + e.message + '). Contact the KNEL helpdesk.';
+        });
+    });
+})();
+</script>
+{% endblock %}

grav/user/themes/knel-contract/theme.yaml

@@ -0,0 +1,10 @@
+slug: knel-contract
+name: 'KNEL Contract'
+type: theme
+version: 0.1.0
+description: 'KNEL services contract site. Inherits Quark2; adds the DocuSeal e-sign page template.'
+icon: file-text
+author:
+  name: Known Element Enterprises LLC
+keywords: contract
+license: AGPL-3.0