feat: Refactor provisioning to instance requests and enhance subdomain availability check

Website/templates/admin_invoices.html

@@ -64,7 +64,7 @@
         {% endfor %}
         
         {% if provision_requests %}
-        <h2>Provisionierungsanfragen</h2>
+        <h2>Instanz-Anfragen</h2>
         {% for prov in provision_requests %}
         <article class="entry">
             <h3>{{ prov.booking_number or prov.booking_number }}</h3>
@@ -105,7 +105,7 @@
                 <button type="submit">Konfiguration ausführen</button>
             </form>
             <form method="post" style="display:inline-block; margin-right:0.6rem;">
-                <input type="hidden" name="action" value="delete_provision">
+                <input type="hidden" name="action" value="delete_instance_request">
                 <input type="hidden" name="prov_id" value="{{ prov.id }}">
                 <button type="submit" class="danger">Löschen</button>
             </form>

Website/templates/my_invoices.html

@@ -46,8 +46,8 @@
 </section>
 
 <section class="panel">
-    <h2>Provisionierungsanfragen</h2>
-    <p>Hier siehst du den Status deiner angeforderten Instanzen/ Buchungen, die vom Admin geprüft werden.</p>
+    <h2>Instanz-Anfragen</h2>
+    <p>Hier siehst du den Status deiner angeforderten Instanzen/Buchungen, die vom Admin geprüft werden.</p>
 </section>
 
 <section class="table-wrap">
@@ -62,7 +62,7 @@
             </tr>
         </thead>
         <tbody>
-            {% for prov in provision_requests %}
+            {% for prov in instance_requests %}
             <tr>
                 <td>{{ prov.booking_number or prov.booking_number }}</td>
                 <td>{{ prov.package_label or prov.package }}</td>
@@ -70,7 +70,7 @@
                 <td>{{ '%.2f'|format(prov.amount_eur or 0) }} EUR</td>
                 <td>
                     {{ prov.provision_status or 'not_started' }}
-                    <form method="post" action="{{ url_for('provision_delete') }}" style="display:inline-block; margin-left:0.6rem;">
+                    <form method="post" action="{{ url_for('instance_request_delete') }}" style="display:inline-block; margin-left:0.6rem;">
                         <input type="hidden" name="prov_id" value="{{ prov.id }}">
                         <button type="submit" class="danger">Löschen</button>
                     </form>

Website/templates/schnell_buchung.html

@@ -208,6 +208,7 @@
                 <div class="booking-review__field">
                     <label for="school_name">Schule/Einrichtung *</label>
                     <input id="school_name" name="school_name" type="text" required maxlength="160" value="{{ form_data.school_name }}">
+                    <div id="school_name_feedback" style="margin-top:0.4rem; font-size:0.9rem; color:#6b6b6b;"></div>
                 </div>
                 <div class="booking-review__field">
                     <label for="contact_email">E-Mail *</label>
@@ -242,10 +243,54 @@
             </div>
 
             <div class="booking-review__actions">
-                <button class="btn" type="submit">{{ confirm_label }}</button>
+                <button id="booking_submit" class="btn" type="submit">{{ confirm_label }}</button>
                 <a class="btn secondary" href="{{ url_for('preise') }}">Zurück zu den Preisen</a>
             </div>
         </form>
     </div>
 </section>
+<script>
+(() => {
+    const input = document.getElementById('school_name');
+    const feedback = document.getElementById('school_name_feedback');
+    const submit = document.getElementById('booking_submit');
+    let timer = null;
+
+    function setFeedback(text, ok) {
+        feedback.textContent = text;
+        feedback.style.color = ok ? '#1b8a3e' : '#b02a37';
+        submit.disabled = !ok;
+    }
+
+    async function check(name) {
+        if (!name || name.trim().length < 3) {
+            feedback.textContent = '';
+            submit.disabled = false;
+            return;
+        }
+        try {
+            const params = new URLSearchParams({ school_name: name });
+            const res = await fetch(`/instance_request/check_subdomain?${params.toString()}`, { credentials: 'same-origin' });
+            if (!res.ok) throw new Error('Netzwerkfehler');
+            const j = await res.json();
+            setFeedback(j.message || (j.available ? 'verfügbar' : 'nicht verfügbar'), !!j.available);
+        } catch (e) {
+            setFeedback('Prüfung fehlgeschlagen (Netzwerk).', false);
+        }
+    }
+
+    if (input) {
+        input.addEventListener('input', (e) => {
+            clearTimeout(timer);
+            const val = e.target.value;
+            timer = setTimeout(() => check(val), 500);
+        });
+
+        // initial check on load
+        if (input.value && input.value.trim()) {
+            check(input.value);
+        }
+    }
+})();
+</script>
 {% endblock %}