feat: add email notifications, order references, stock badges, and sale flags

- Add customer email field and PayPal payment reminder emails with order reference (HEL-YEAR-ID format)
- Display stock availability with color-coded badges (available/low/unavailable)
- Add sale/clearance flag with animated red badge overlay
- Implement automatic fallback placeholder for missing/broken product images
- Add email column to order management view

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

wawi/templates/abrechnung.html

@@ -0,0 +1,116 @@
+{% extends "base.html" %}
+{% block content %}
+  <div class="toolbar">
+    <h2 style="margin: 0; font-size: 20px;">Abrechnung {{ year }}</h2>
+    <form class="search" method="get" action="{{ url_for('bp.abrechnung') }}">
+      <select name="year">
+        {% for y in range(current_year, 2025, -1) %}
+          <option value="{{ y }}" {% if year == y|string %}selected{% endif %}>{{ y }}</option>
+        {% endfor %}
+        <option value="ALT" {% if year == "ALT" %}selected{% endif %}>Vor 2026 (gesamt)</option>
+      </select>
+      <button class="btn" type="submit">Anzeigen</button>
+    </form>
+  </div>
+
+  <div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; margin-bottom: 20px;">
+    <div class="stat">
+      <div class="label">Gesamtumsatz</div>
+      <div class="value">{{ "%.2f"|format(total_revenue) }} €</div>
+    </div>
+    <div class="stat">
+      <div class="label">Verkaufte Artikel</div>
+      <div class="value">{{ total_items }}</div>
+    </div>
+    <div class="stat">
+      <div class="label">PayPal ({{ paypal_count }}x)</div>
+      <div class="value">{{ "%.2f"|format(paypal_revenue) }} €</div>
+    </div>
+    <div class="stat">
+      <div class="label">Bar ({{ bar_count }}x)</div>
+      <div class="value">{{ "%.2f"|format(bar_revenue) }} €</div>
+    </div>
+  </div>
+
+  <div class="card" style="margin-bottom: 20px;">
+    <div style="padding: 16px; border-bottom: 1px solid rgba(255,255,255,.08);">
+      <h3 style="margin: 0; font-size: 16px;">Umsatz nach Artikel</h3>
+    </div>
+    <table>
+      <thead>
+        <tr>
+          <th>Artikel</th>
+          <th>Verkaufte Menge</th>
+          <th>Umsatz</th>
+        </tr>
+      </thead>
+      <tbody>
+        {% if artikel_list %}
+          {% for a in artikel_list %}
+            <tr>
+              <td>{{ a.artikel }}</td>
+              <td>{{ a.menge }}</td>
+              <td>{{ "%.2f"|format(a.umsatz) }} €</td>
+            </tr>
+          {% endfor %}
+        {% else %}
+          <tr>
+            <td colspan="3" class="empty">Keine Daten für {{ year }}.</td>
+          </tr>
+        {% endif %}
+      </tbody>
+    </table>
+  </div>
+
+  <div class="card">
+    <div style="padding: 16px; border-bottom: 1px solid rgba(255,255,255,.08);">
+      <h3 style="margin: 0; font-size: 16px;">Alle erledigten Bestellungen ({{ orders|length }})</h3>
+    </div>
+    <table>
+      <thead>
+        <tr>
+          <th>Datum</th>
+          <th>Name</th>
+          <th>Mannschaft</th>
+          <th>Artikel</th>
+          <th>Größe</th>
+          <th>Menge</th>
+          <th>Preis/Stk</th>
+          <th>Gesamt</th>
+          <th>Zahlungsart</th>
+          <th>Zahlung</th>
+        </tr>
+      </thead>
+      <tbody>
+        {% if orders %}
+          {% for o in orders %}
+            <tr>
+              <td>{{ o.completed_at }}</td>
+              <td>{{ o.name }}</td>
+              <td>{{ o.mannschaft }}</td>
+              <td>{{ o.artikel }}</td>
+              <td>{{ o.groesse }}</td>
+              <td>{{ o.menge }}</td>
+              <td>{{ "%.2f"|format(o.preis or 0) }} €</td>
+              <td><strong>{{ "%.2f"|format((o.preis or 0) * (o.menge or 0)) }} €</strong></td>
+              <td>
+                {% if o.payment_method == "paypal" %}PayPal
+                {% else %}Bar
+                {% endif %}
+              </td>
+              <td>
+                {% if o.payment_status == "paid" %}<span class="badge success">Bezahlt</span>
+                {% else %}<span class="badge warning">Unbezahlt</span>
+                {% endif %}
+              </td>
+            </tr>
+          {% endfor %}
+        {% else %}
+          <tr>
+            <td colspan="10" class="empty">Keine erledigten Bestellungen für {{ year }}.</td>
+          </tr>
+        {% endif %}
+      </tbody>
+    </table>
+  </div>
+{% endblock %}

wawi/templates/edit.html

@@ -25,6 +25,10 @@
           Bild hochladen (optional)
           <input type="file" name="bild_file" accept="image/*" />
         </label>
+        <label style="display: flex; align-items: center; gap: 8px; padding-top: 8px;">
+          <input type="checkbox" name="sale" value="1" {% if item and item.sale %}checked{% endif %} style="width: auto; height: 18px;" />
+          <span style="color: var(--text);">Sale / Abverkauf 🔥</span>
+        </label>
         <label>
           Soll
           <input type="number" name="soll" min="0" value="{{ item.soll if item else 0 }}" />

wawi/templates/orders.html

@@ -16,6 +16,7 @@
           <th>Datum</th>
           <th>Name</th>
           <th>Handy</th>
+          <th>E-Mail</th>
           <th>Mannschaft</th>
           <th>Artikel</th>
           <th>Größe</th>
@@ -33,6 +34,7 @@
             <td>{{ o.created_at }}</td>
             <td>{{ o.name }}</td>
             <td>{{ o.handy }}</td>
+            <td>{{ o.email or "–" }}</td>
             <td>{{ o.mannschaft }}</td>
             <td>{{ o.artikel }}</td>
             <td>{{ o.groesse }}</td>
@@ -43,7 +45,8 @@
               {% endif %}
             </td>
             <td>
-              {% if o.payment_status == "paid" %}<span class="badge success">Bezahlt</span>
+              {% if o.canceled %}–
+              {% elif o.payment_status == "paid" %}<span class="badge success">Bezahlt</span>
               {% else %}<span class="badge warning">Unbezahlt</span>
               {% endif %}
             </td>
@@ -68,7 +71,7 @@
                 {% endif %}
                 <form method="post" action="{{ url_for('bp.cancel_order', order_id=o.id) }}" onsubmit="return confirm('Bestellung wirklich stornieren?');">
                   <input type="hidden" name="csrf_token" value="{{ csrf_token() }}"/>
-                  <button class="btn small danger" type="submit">Stornieren</button>
+                  <button class="btn small danger" type="submit">Storno</button>
                 </form>
               {% else %}
                 –
@@ -76,7 +79,7 @@
             </td>
           </tr>
           <tr class="order-history">
-            <td colspan="12">
+            <td colspan="13">
               <details class="inline-details">
                 <summary>Historie</summary>
                 <div class="history-grid">
@@ -92,7 +95,7 @@
           </tr>
         {% else %}
           <tr>
-            <td colspan="12" class="empty">Keine Bestellungen.</td>
+            <td colspan="13" class="empty">Keine Bestellungen.</td>
           </tr>
         {% endfor %}
       </tbody>