Lizenz-Vertrieb Feinschliff: Zugabe +10%, sichere Datei-Einloesung, Mail-Config

Umsetzung des Thomas-Feedbacks:
- Reihenfolge: freie Lizenzen beim Lehrer jetzt ORDER BY id (= Reihenfolge der
  reinkopierten Liste); stornierte ausgeblendet.
- Gratis-Zugabe: Checkbox (Default an) "+10 % aufgerundet" -> geliefert =
  ceil(bestellt*1.1) (14 -> 16). Batch speichert qty_ordered (verrechnet) und
  qty (geliefert); Live-Vorschau im Formular.
- Einloeselink/QR ENTFERNT (Sicherheitsrisiko: falscher eingeloggter Account).
  einloesen.html + pages/einloesen.php geloescht, Sammellink aus UI/Mail raus.
- CSV: Gueltig-bis + Metadaten nur in der KOPFZEILE, danach reine Code-Zeilen
  (per Copy-Paste einloesbar). Dateiname: <ExtBestellnr|Datum>_geograsim_<intNr>.
- Interne Bestellnummer = batch.id (laufend, nicht editierbar, storno-stabil).
- Lehrer-Einloesen: sichere .txt/.csv-Ablage (mehrstufig: Endung+MIME, Groessen-
  limit, nur Text lesen, Whitelist-Regex extrahiert nur Code-Tokens, Server
  validiert) — kein Upload, keine Ausfuehrung/Rendering.
- Mailsystem: zentrale Config in neuer app_settings (Provider server|aws,
  Absender-Name/-Adresse, oeffentliche URL), pflegbar in Admin + Test-Versand.
  Mailer liest Absender aus Config (SMTP-Zugang bleibt in .env). Mailtext nutzt
  kanonische geograsim.at (nicht v3/localhost).

Migrationen: -2 (qty_ordered), -3 (app_settings). Beide additiv, auf v3 angewandt.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

App/Don_t_Deploy/2026-08-26-lizenz-vertrieb-2.sql

@@ -0,0 +1,8 @@
+-- =====================================================================
+-- Lizenz-Vertrieb — Nachtrag 2 (2026-08-26)
+--  * bestellte vs. gelieferte Menge (Zugabe +10 %)
+-- Additiv & non-breaking. (Mail-Config: siehe Nachtrag 3, app_settings.)
+-- =====================================================================
+
+ALTER TABLE license_batches
+  ADD COLUMN qty_ordered INT UNSIGNED NULL AFTER qty;   -- bestellt (verrechnet); qty = geliefert inkl. Zugabe

App/Don_t_Deploy/2026-08-26-lizenz-vertrieb-3-mailsettings.sql

@@ -0,0 +1,19 @@
+-- =====================================================================
+-- Lizenz-Vertrieb — Nachtrag 3 (2026-08-26): portable App-Settings
+-- Eigene Key/Value-Tabelle fuer die Mail-Konfiguration (Provider/Absender/URL).
+-- Ersetzt die Nutzung der lokalen Orphan-Tabelle platform_config_v2 (existiert
+-- auf v3/Prod nicht). Additiv & non-breaking. MariaDB + MySQL 8 kompatibel.
+-- =====================================================================
+
+CREATE TABLE IF NOT EXISTS app_settings (
+  skey       VARCHAR(64) NOT NULL PRIMARY KEY,
+  sval       TEXT NULL,
+  updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+  updated_by INT UNSIGNED NULL
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+INSERT IGNORE INTO app_settings (skey, sval) VALUES
+  ('mail_provider',   'server'),
+  ('mail_from_email', 'support@geograsim.at'),
+  ('mail_from_name',  'GeoGraSim'),
+  ('mail_public_url', 'https://geograsim.at');

App/admin-licenses.html

@@ -128,8 +128,8 @@
     <div class="card-h">📦 Lizenzen ausgeben (Vertrieb)</div>
     <div class="frm">
       <div>
-        <label>Anzahl</label>
+        <label>Anzahl (bestellt)</label>
-        <input type="number" id="iss-count" value="12" min="1" max="5000">
+        <input type="number" id="iss-count" value="12" min="1" max="5000" oninput="updatePreview()">
       </div>
       <div>
         <label>Typ</label>
@@ -168,6 +168,12 @@
     </div>
     <datalist id="cust-hints"></datalist>
     <datalist id="order-hints"></datalist>
+    <div style="margin-top:.6rem;display:flex;align-items:center;gap:.7rem;flex-wrap:wrap">
+      <label style="display:flex;align-items:center;gap:.4rem;font-size:.75rem;font-weight:600;color:#4a4a4a">
+        <input type="checkbox" id="iss-bonus" checked onchange="updatePreview()"> +10 % Gratis-Zugabe (aufgerundet)
+      </label>
+      <span id="iss-preview" class="mini"></span>
+    </div>
     <div style="margin-top:.7rem" class="row-act">
       <button class="btn" onclick="issueBatch()">Codes erzeugen &amp; ausgeben</button>
       <span id="iss-msg" class="mini"></span>
@@ -192,6 +198,41 @@
     <div id="batch-table" style="overflow-x:auto"></div>
   </div>
 
+  <!-- ============ Mail-Einstellungen ============ -->
+  <div class="card">
+    <div class="card-h">✉️ Mail-Einstellungen</div>
+    <div class="frm">
+      <div>
+        <label>Versand-Treiber</label>
+        <select id="mc-provider">
+          <option value="server">Eigener Server (SMTP)</option>
+          <option value="aws">Amazon SES (später)</option>
+        </select>
+        <div class="hint-s">AWS wird aktiv, sobald konfiguriert.</div>
+      </div>
+      <div>
+        <label>Absender-Name</label>
+        <input type="text" id="mc-fromname" placeholder="GeoGraSim">
+      </div>
+      <div>
+        <label>Absender-Adresse</label>
+        <input type="email" id="mc-fromemail" placeholder="support@geograsim.at">
+        <div class="hint-s">SMTP-Zugang bleibt geheim in der .env.</div>
+      </div>
+      <div>
+        <label>Öffentliche Basis-URL</label>
+        <input type="text" id="mc-publicurl" placeholder="https://geograsim.at">
+        <div class="hint-s">Für Links in Mails (nicht v3/localhost).</div>
+      </div>
+    </div>
+    <div class="row-act" style="margin-top:.6rem">
+      <button class="btn" onclick="saveMailConfig()">Speichern</button>
+      <input type="email" id="mc-testto" placeholder="Test an…" style="padding:.4rem .55rem;border:1.5px solid rgba(0,0,0,.12);border-radius:6px;font-size:.78rem">
+      <button class="btn btn-outline" onclick="testMail()">Test senden</button>
+      <span id="mc-msg" class="mini"></span>
+    </div>
+  </div>
+
   <div class="card">
     <div class="card-h">Neue Lizenzen generieren</div>
     <div style="display:flex;gap:.5rem;align-items:flex-end;flex-wrap:wrap">
@@ -409,16 +450,18 @@ async function issueBatch(){
   var name = document.getElementById('iss-name').value.trim();
   var vf = document.getElementById('iss-from').value;
   var vu = document.getElementById('iss-until').value;
+  var bonus = document.getElementById('iss-bonus').checked;
   var msg = document.getElementById('iss-msg');
   if(count<1||count>5000){ msg.textContent='Anzahl 1–5000.'; return; }
+  var delivered = calcDelivered(count, bonus);
   var who = name||email||custno||'(kein Kunde)';
-  if(count>=100 && !confirm(count+' Codes für „'+who+'"'+(order?' (Best.-Nr. '+order+')':'')+', gültig bis '+fmtDate(vu)+', Typ '+type+'.\n\nWirklich erzeugen?')) return;
+  if(count>=100 && !confirm(count+' bestellt → '+delivered+' Codes im Paket für „'+who+'"'+(order?' (Best.-Nr. '+order+')':'')+', gültig bis '+fmtDate(vu)+', Typ '+type+'.\n\nWirklich erzeugen?')) return;
   msg.textContent = 'Erzeuge …';
-  var r = await api('licenses', {action:'issue_batch', count:count, sales_type:type, order_no:order,
+  var r = await api('licenses', {action:'issue_batch', count:count, bonus:bonus, sales_type:type, order_no:order,
     customer:{email:email, customer_no:custno, name:name}, valid_from:vf, valid_until:vu});
   if(r.error){ msg.innerHTML='<span style="color:#c07a6b">'+esc(r.error)+'</span>'; return; }
-  msg.innerHTML='<span style="color:#5a8a5e">✓ '+r.count+' Codes erzeugt (Charge #'+r.batch_id+').</span>';
+  msg.innerHTML='<span style="color:#5a8a5e">✓ '+r.count+' Codes erzeugt (Bestellung #'+r.internal_no+', bestellt '+r.ordered+').</span>';
-  lastIssue = {batch_id:r.batch_id, codes:r.codes, count:r.count, valid_until:r.valid_until, token:r.redeem_token, order_no:order, email:email};
+  lastIssue = {batch_id:r.batch_id, internal_no:r.internal_no, ordered:r.ordered, codes:r.codes, count:r.count, valid_until:r.valid_until, token:r.redeem_token, order_no:order, email:email};
   renderIssueResult();
   loadBatches();
   loadLicenses();
@@ -429,17 +472,15 @@ function renderIssueResult(){
   var codesText = m.codes.join('\n');
   var mailText = buildMailText(m);
   var h = '<div class="out">'
+    + '<div class="mini" style="margin-bottom:.5rem">Bestellung <b>#'+m.internal_no+'</b> · bestellt <b>'+m.ordered+'</b> · geliefert <b>'+m.count+'</b>'+(m.count>m.ordered?' <span style="color:#5a8a5e">(+'+(m.count-m.ordered)+' gratis)</span>':'')+' · gültig bis '+fmtDate(m.valid_until)+'</div>'
     + '<h4>1 · Codes (' + m.count + ') — kopieren</h4>'
     + '<textarea id="codes-ta" rows="'+Math.min(10,Math.max(3,m.codes.length))+'" readonly>'+esc(codesText)+'</textarea>'
     + '<div class="row-act" style="margin-top:.4rem">'
     +   '<button class="btn btn-outline" onclick="copyEl(\'codes-ta\')">📋 Kopieren</button>'
     +   '<button class="btn btn-outline" onclick="downloadCodes(\'txt\')">⬇ .txt</button>'
-    +   '<button class="btn btn-outline" onclick="downloadCodes(\'csv\')">⬇ .csv (mit Gültig-bis)</button>'
+    +   '<button class="btn btn-outline" onclick="downloadCodes(\'csv\')">⬇ .csv</button>'
     + '</div>'
-    + '<h4 style="margin-top:.9rem">2 · Sammel-Einlöse-Link (alle auf einmal)</h4>'
+    + '<h4 style="margin-top:.9rem">2 · Per Mail senden</h4>'
-    + '<div class="row-act"><input class="lnk" id="charge-link" readonly value="'+esc(absUrl('/einloesen?charge='+m.token))+'"><button class="btn btn-outline" onclick="copyEl(\'charge-link\')">📋</button></div>'
-    + '<div class="hint-s">Pro Code funktioniert auch: '+esc(absUrl('/einloesen?code=CODE'))+'</div>'
-    + '<h4 style="margin-top:.9rem">3 · Per Mail senden</h4>'
     + '<div class="frm" style="grid-template-columns:1fr 2fr">'
     +   '<div><label>An</label><input type="email" id="mail-to" value="'+esc(m.email||'')+'"></div>'
     +   '<div><label>Betreff</label><input type="text" id="mail-subj" value="Ihre GeoGraSim-Lizenzcodes'+(m.order_no?' — Best.-Nr. '+esc(m.order_no):'')+'"></div>'
@@ -457,20 +498,65 @@ function buildMailText(m){
   var order = m.order_no ? ('\nBestellnummer: '+m.order_no) : '';
   return 'Guten Tag,\n\nvielen Dank für Ihre Bestellung. Anbei Ihre '+m.count+' GeoGraSim-Lizenzcodes, gültig bis '+fmtDate(m.valid_until)+'.'+order+'\n\n'
     + codesPart + '\n\n'
-    + 'Einlösen: Als Lehrperson unter '+absUrl('/')+' anmelden und die Codes unter „Lizenzen" eingeben.\n'
+    + 'Einlösen: Als Lehrperson unter '+PUBLIC_URL+' anmelden und die Codes unter „Lizenzen" eingeben.\n\n'
-    + 'Oder alle auf einmal über diesen Link: '+absUrl('/einloesen?charge='+m.token)+'\n\n'
     + 'Freundliche Grüße\nGeoGraSim';
 }
 
 function copyEl(id){ var el=document.getElementById(id); el.select(); navigator.clipboard.writeText(el.value).catch(function(){document.execCommand('copy');}); }
 
+// CSV: Metadaten (inkl. Gültig-bis) in die KOPFZEILE, danach reine Code-Zeilen
+// -> der Code-Block bleibt per Copy-Paste einlösbar (kein Datum je Zeile).
 function downloadCodes(fmt){
   var m = lastIssue; if(!m) return;
   var content, mime;
-  if(fmt==='csv'){ content='Code;Gueltig_bis\n'+m.codes.map(function(c){return c+';'+m.valid_until;}).join('\n')+'\n'; mime='text/csv'; }
+  if(fmt==='csv'){
-  else { content=m.codes.join('\r\n')+'\r\n'; mime='text/plain'; }
+    var head='Bestellung;#'+(m.internal_no||'')+'\nExterne Bestellnummer;'+(m.order_no||'')+'\nGültig bis;'+fmtDate(m.valid_until)+'\nAnzahl;'+m.count+'\n\n';
-  var base = m.order_no ? m.order_no.replace(/[^a-zA-Z0-9_\-]/g,'_') : (new Date().toISOString().slice(0,16).replace(/[:T]/g,'-'));
+    content=head+m.codes.join('\r\n')+'\r\n'; mime='text/csv';
-  var a=document.createElement('a'); a.href=URL.createObjectURL(new Blob([content],{type:mime})); a.download=base+'.'+fmt; a.click();
+  } else { content=m.codes.join('\r\n')+'\r\n'; mime='text/plain'; }
+  var ext = m.order_no ? m.order_no.replace(/[^a-zA-Z0-9_\-]/g,'_') : (new Date().toISOString().slice(0,16).replace(/[:T]/g,'-'));
+  var fname = ext+'_geograsim_'+(m.internal_no||'')+'.'+fmt;
+  var a=document.createElement('a'); a.href=URL.createObjectURL(new Blob([content],{type:mime})); a.download=fname; a.click();
+}
+
+function calcDelivered(ordered, bonus){ return bonus ? Math.ceil(ordered*1.1) : ordered; }
+function updatePreview(){
+  var o=parseInt(document.getElementById('iss-count').value)||0;
+  var b=document.getElementById('iss-bonus').checked;
+  var el=document.getElementById('iss-preview'); if(!el) return;
+  if(o<1){ el.textContent=''; return; }
+  var d=calcDelivered(o,b);
+  el.innerHTML = b ? ('→ im Paket <b>'+d+'</b> Codes (+'+(d-o)+' gratis)') : ('→ <b>'+d+'</b> Codes (keine Zugabe)');
+}
+
+// ── Mail-Einstellungen ──
+var PUBLIC_URL='https://geograsim.at';
+async function loadMailConfig(){
+  var r=await api('licenses?admin=1&mail_config=1');
+  if(!r || r.error) return;
+  PUBLIC_URL=r.public_url||PUBLIC_URL;
+  document.getElementById('mc-provider').value=r.provider||'server';
+  document.getElementById('mc-fromname').value=r.from_name||'';
+  document.getElementById('mc-fromemail').value=r.from_email||'';
+  document.getElementById('mc-publicurl').value=r.public_url||'';
+}
+async function saveMailConfig(){
+  var mm=document.getElementById('mc-msg'); mm.textContent='Speichere …';
+  var r=await api('licenses',{action:'set_mail_config',
+    provider:document.getElementById('mc-provider').value,
+    from_name:document.getElementById('mc-fromname').value.trim(),
+    from_email:document.getElementById('mc-fromemail').value.trim(),
+    public_url:document.getElementById('mc-publicurl').value.trim()});
+  if(r.error){ mm.innerHTML='<span style="color:#c07a6b">'+esc(r.error)+'</span>'; return; }
+  mm.innerHTML='<span style="color:#5a8a5e">✓ Gespeichert.</span>'; loadMailConfig();
+}
+async function testMail(){
+  var to=document.getElementById('mc-testto').value.trim();
+  var mm=document.getElementById('mc-msg');
+  if(!to){ mm.innerHTML='<span style="color:#c07a6b">Test-Adresse fehlt.</span>'; return; }
+  mm.textContent='Sende Test …';
+  var r=await api('licenses',{action:'test_mail', to_email:to});
+  if(r.error){ mm.innerHTML='<span style="color:#c07a6b">'+esc(r.error)+'</span>'; return; }
+  mm.innerHTML='<span style="color:#5a8a5e">✓ Test gesendet.</span>';
 }
 
 async function sendMail(batchId){
@@ -542,8 +628,6 @@ async function openBatch(id){
     + ' · gültig '+fmtDate(b.default_valid_from)+'–'+fmtDate(b.default_valid_until)
     + (b.canceled_at?' · <span class="badge b-canceled">Charge storniert</span>':'')+'</div>';
   h+='<div class="row-act" style="margin-bottom:.6rem">'
-    + '<input class="lnk" readonly value="'+esc(absUrl('/einloesen?charge='+b.redeem_token))+'">'
-    + '<button class="btn-sm" onclick="copyEl2(this)">📋 Sammellink</button>'
     + '<button class="btn-sm" onclick="extendBatch('+b.id+',\''+esc(b.default_valid_until||'')+'\')">📅 Charge verlängern</button>'
     + '<button class="btn-sm" onclick="cancelBatch('+b.id+')">✖ Charge stornieren</button></div>';
   h+='<div style="max-height:320px;overflow:auto"><table><tr><th>Code</th><th>Status</th><th>Gültig bis</th><th>Lehrperson</th><th></th></tr>';
@@ -608,6 +692,8 @@ fetch(BASE + '/api/admin', {method:'POST', headers:{'Content-Type':'application/
     loadLicenses();
     prefillDefaults();
     loadBatches();
+    loadMailConfig();
+    updatePreview();
   });
 </script>
 </body>

App/einloesen.html

@@ -1,80 +0,0 @@
-<!DOCTYPE html>
-<html lang="de">
-<head>
-  <meta charset="UTF-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1.0">
-  <title>Lizenz einlösen — GeoGraSim</title>
-  <link rel="stylesheet" href="assets/fonts/inter.css">
-  <style>
-    *{margin:0;padding:0;box-sizing:border-box}
-    body{font-family:'Inter',system-ui,sans-serif;background:#f0eee6;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1.5rem;color:#2a2a2a}
-    .card{background:#fff;border-radius:18px;max-width:480px;width:100%;padding:2.2rem 2rem;box-shadow:0 6px 30px rgba(31,78,90,.1);border:1px solid #e6e0d0;text-align:center}
-    .wm{font-family:'Arial Black','Helvetica Neue',Arial,sans-serif;font-weight:900;font-size:26px;letter-spacing:-.02em;margin-bottom:.3rem}
-    .wm .g{color:#143b4b}.wm .r{color:#1d707b}.wm .a{color:#f17f13}
-    .sub{font-size:.62rem;font-weight:700;letter-spacing:.28em;color:#83a3a0;text-transform:uppercase;margin-bottom:1.6rem}
-    h1{font-size:1.2rem;color:#1f4e5a;margin-bottom:.6rem}
-    p{font-size:.9rem;color:#4a5a5f;line-height:1.6;margin-bottom:1rem}
-    .big{font-size:2.6rem;font-weight:900;color:#5a8a5e;line-height:1;margin:.4rem 0}
-    .btn{display:inline-block;padding:.7rem 1.6rem;background:#4a7c8a;color:#fff;text-decoration:none;border-radius:9px;font-weight:700;font-size:.9rem;border:none;cursor:pointer;margin-top:.4rem}
-    .btn:hover{background:#3a6470}
-    .spin{width:34px;height:34px;border:3px solid #dfe8ea;border-top-color:#4a7c8a;border-radius:50%;animation:sp 1s linear infinite;margin:1rem auto}
-    @keyframes sp{to{transform:rotate(360deg)}}
-    .err{color:#b0453a}
-    .foot{font-size:.72rem;color:#9aa5a9;margin-top:1.4rem}
-    .code{font-family:'Courier New',monospace;font-weight:700;color:#1f4e5a}
-  </style>
-</head>
-<body>
-  <div class="card">
-    <div class="wm"><span class="g">Geo</span><span class="r">Gra</span><span class="a">Sim</span></div>
-    <div class="sub">Lizenz einlösen</div>
-    <div id="content"><div class="spin"></div></div>
-    <div class="foot">Bei Fragen: <a href="mailto:support@geograsim.at" style="color:#4a7c8a">support@geograsim.at</a></div>
-  </div>
-
-<script>
-(function(){
-  var G = window.__GGS__ || {};
-  var BASE = G.basePath || '';
-  var content = document.getElementById('content');
-  var params = new URLSearchParams(location.search);
-  var charge = params.get('charge');
-  var code = params.get('code');
-
-  function html(h){ content.innerHTML = h; }
-  function loginPrompt(){
-    html('<h1>Bitte anmelden</h1>'
-      + '<p>Melde dich als <b>Lehrperson</b> an, um '+(charge?'diese Lizenzen':'diesen Lizenzcode')+' einzulösen. Öffne danach diesen Link erneut.</p>'
-      + '<a class="btn" href="'+BASE+'/login">Als Lehrperson anmelden</a>');
-  }
-
-  if (!charge && !code) { html('<h1>Ungültiger Link</h1><p>Es fehlt ein Lizenzcode oder eine Charge.</p>'); return; }
-  if (!G.teacherId) { loginPrompt(); return; }
-
-  var body = charge ? {action:'redeem_charge', token:charge} : {action:'redeem', code:code};
-  fetch(BASE + '/api/licenses', {method:'POST', headers:{'Content-Type':'application/json'}, credentials:'same-origin', body:JSON.stringify(body)})
-    .then(function(r){ return r.json(); })
-    .then(function(r){
-      if (r.error) {
-        html('<h1 class="err">Nicht eingelöst</h1><p class="err">'+String(r.error)+'</p>'
-          + '<a class="btn" href="'+BASE+'/teacher">Zum Dashboard</a>');
-        return;
-      }
-      if (charge) {
-        var n = r.redeemed || 0;
-        html('<h1>Geschafft!</h1><div class="big">'+n+'</div>'
-          + '<p>'+(n===1?'Lizenz wurde':'Lizenzen wurden')+' deinem Konto gutgeschrieben. Du kannst sie jetzt im Dashboard deinen Schüler:innen zuweisen.</p>'
-          + '<a class="btn" href="'+BASE+'/teacher">Zum Dashboard</a>');
-      } else {
-        html('<h1>Code eingelöst ✓</h1>'
-          + '<p>Der Lizenzcode <span class="code">'+String(code)+'</span> wurde deinem Konto gutgeschrieben.</p>'
-          + '<a class="btn" href="'+BASE+'/teacher">Zum Dashboard</a>');
-      }
-    })
-    .catch(function(){
-      html('<h1 class="err">Fehler</h1><p>Verbindung fehlgeschlagen. Bitte später erneut versuchen.</p>');
-    });
-})();
-</script>
-</body>
-</html>

App/pages/einloesen.php

@@ -1 +0,0 @@
-<?php renderPage('einloesen.html');

App/php/api/licenses.php

@@ -87,6 +87,14 @@ function lic_attempt(Database $db, ?int $teacherId, string $code, bool $ok): voi
         [$ip !== '' ? $ip : null, $teacherId, substr($code, 0, 32), $ok ? 1 : 0]);
 }
 
+/** App-Setting lesen (app_settings), robust mit Default. */
+function lic_cfg(Database $db, string $key, string $default = ''): string {
+    try {
+        $r = $db->fetchOne("SELECT sval FROM app_settings WHERE skey = ?", [$key]);
+        return ($r && $r['sval'] !== null && $r['sval'] !== '') ? (string)$r['sval'] : $default;
+    } catch (\Throwable $e) { return $default; }
+}
+
 // === GET ===
 if ($method === 'GET') {
     // Super-Admin: alle Lizenzen
@@ -105,6 +113,16 @@ if ($method === 'GET') {
             ]);
         }
 
+        // Mail-System-Konfiguration
+        if (isset($_GET['mail_config'])) {
+            Response::ok([
+                'provider'   => lic_cfg($db, 'mail_provider', 'server'),
+                'from_email' => lic_cfg($db, 'mail_from_email', 'support@geograsim.at'),
+                'from_name'  => lic_cfg($db, 'mail_from_name', 'GeoGraSim'),
+                'public_url' => lic_cfg($db, 'mail_public_url', 'https://geograsim.at'),
+            ]);
+        }
+
         // Kunden-Autocomplete
         if (isset($_GET['customers'])) {
             $like = '%' . trim($_GET['customers']) . '%';
@@ -214,9 +232,10 @@ if ($method === 'GET') {
         [$classId]
     );
 
-    // Auch freie Lizenzen des Lehrers (noch nicht zugewiesen)
+    // Auch freie Lizenzen des Lehrers (noch nicht zugewiesen), storniert ausgeschlossen.
+    // Reihenfolge = id (= Reihenfolge, in der die Codes ausgegeben/reinkopiert wurden).
     $freeLicenses = $db->fetchAll(
-        'SELECT id, code, school_year FROM licenses WHERE teacher_id = ? AND student_id IS NULL ORDER BY code',
+        'SELECT id, code, school_year FROM licenses WHERE teacher_id = ? AND student_id IS NULL AND canceled_at IS NULL ORDER BY id',
         [$teacherId]
     );
 
@@ -348,8 +367,11 @@ if ($method === 'POST') {
         $adminId = Session::adminId();
         if (!$adminId) Response::error('Nur Admin', 403);
 
-        $count = (int)($body['count'] ?? 0);
+        $ordered = (int)($body['count'] ?? 0);
-        if ($count < 1 || $count > 5000) Response::error('Anzahl muss zwischen 1 und 5000 liegen');
+        if ($ordered < 1 || $ordered > 5000) Response::error('Anzahl muss zwischen 1 und 5000 liegen');
+        // Gratis-Zugabe: +10 %, aufgerundet (14 → 16). Standard aktiv.
+        $bonus = !array_key_exists('bonus', $body) || !empty($body['bonus']);
+        $count = $bonus ? (int)ceil($ordered * 1.1) : $ordered;
         $type = in_array($body['sales_type'] ?? '', LIC_TYPES, true) ? $body['sales_type'] : 'privat';
         $orderNo = trim((string)($body['order_no'] ?? '')) ?: null;
         $note = trim((string)($body['note'] ?? '')) ?: null;
@@ -366,9 +388,9 @@ if ($method === 'POST') {
         $db->begin();
         try {
             $db->execute(
-                "INSERT INTO license_batches (customer_id, order_no, sales_type, qty, default_valid_from, default_valid_until, note, redeem_token, created_by)
+                "INSERT INTO license_batches (customer_id, order_no, sales_type, qty, qty_ordered, default_valid_from, default_valid_until, note, redeem_token, created_by)
-                 VALUES (?,?,?,?,?,?,?,?,?)",
+                 VALUES (?,?,?,?,?,?,?,?,?,?)",
-                [$customerId, $orderNo, $type, $count, $validFrom, $validUntil, $note, $token, $adminId]);
+                [$customerId, $orderNo, $type, $count, $ordered, $validFrom, $validUntil, $note, $token, $adminId]);
             $batchId = (int)$db->lastInsertId();
 
             $codes = []; $made = 0; $tries = 0; $maxTries = $count * 8 + 50;
@@ -383,16 +405,16 @@ if ($method === 'POST') {
                 } catch (\Throwable $e) { /* Code-Kollision (extrem selten) → neuer Versuch */ }
             }
             if ($made < $count) throw new \RuntimeException("Nur $made von $count Codes erzeugt");
-            lic_event($db, $batchId, null, 'issued', "$count Codes, gültig $validFrom…$validUntil, Typ $type" . ($orderNo ? ", Best.-Nr. $orderNo" : ''), $adminId);
+            lic_event($db, $batchId, null, 'issued', "bestellt $ordered, geliefert $made (Zugabe " . ($bonus ? 'ja' : 'nein') . "), gültig $validFrom…$validUntil, Typ $type" . ($orderNo ? ", Best.-Nr. $orderNo" : ''), $adminId);
             $db->commit();
         } catch (\Throwable $e) {
             $db->rollBack();
             Response::error('Fehler beim Erzeugen: ' . $e->getMessage(), 500);
         }
         Response::ok([
-            'batch_id' => $batchId, 'redeem_token' => $token,
+            'batch_id' => $batchId, 'internal_no' => $batchId, 'redeem_token' => $token,
             'valid_from' => $validFrom, 'valid_until' => $validUntil,
-            'count' => $made, 'codes' => $codes,
+            'ordered' => $ordered, 'count' => $made, 'codes' => $codes,
         ]);
     }
 
@@ -444,6 +466,8 @@ if ($method === 'POST') {
     if ($action === 'send_batch_mail') {
         $adminId = Session::adminId(); if (!$adminId) Response::error('Nur Admin', 403);
         $bid = (int)($body['batch_id'] ?? 0); if (!$bid) Response::error('batch_id erforderlich');
+        $provider = lic_cfg($db, 'mail_provider', 'server');
+        if ($provider !== 'server') Response::error('Aktiver Mail-Treiber „' . $provider . '" ist noch nicht verfügbar. In den Mail-Einstellungen auf „server" stellen.');
         $to = trim((string)($body['to_email'] ?? ''));
         $subject = trim((string)($body['subject'] ?? '')) ?: 'Ihre GeoGraSim-Lizenzcodes';
         $textBody = (string)($body['body_text'] ?? '');
@@ -459,7 +483,7 @@ if ($method === 'POST') {
         }
         $db->execute(
             "INSERT INTO license_mails (batch_id, to_email, subject, body_text, body_html, provider, status, created_by) VALUES (?,?,?,?,?,?,?,?)",
-            [$bid, $to, $subject, $textBody, $html, 'server', 'queued', $adminId]);
+            [$bid, $to, $subject, $textBody, $html, $provider, 'queued', $adminId]);
         $mailId = (int)$db->lastInsertId();
         try {
             Mailer::sendWithAttachments($to, $subject, $html, $textBody, $attach);
@@ -489,6 +513,36 @@ if ($method === 'POST') {
         Response::ok(['redeemed' => $n]);
     }
 
+    // ═══════════════ Mail-System-Konfiguration ═══════════════
+    if ($action === 'set_mail_config') {
+        $adminId = Session::adminId(); if (!$adminId) Response::error('Nur Admin', 403);
+        $prov  = in_array($body['provider'] ?? '', ['server', 'aws'], true) ? $body['provider'] : 'server';
+        $femail = trim((string)($body['from_email'] ?? ''));
+        $fname  = trim((string)($body['from_name'] ?? ''));
+        $purl   = rtrim(trim((string)($body['public_url'] ?? '')), '/');
+        if ($femail !== '' && !filter_var($femail, FILTER_VALIDATE_EMAIL)) Response::error('Absender-Adresse ungültig');
+        $set = ['mail_provider' => $prov, 'mail_from_email' => $femail, 'mail_from_name' => $fname, 'mail_public_url' => $purl];
+        foreach ($set as $k => $v) {
+            if ($v === '') continue;
+            $db->execute("INSERT INTO app_settings (skey, sval, updated_by) VALUES (?,?,?) ON DUPLICATE KEY UPDATE sval = VALUES(sval), updated_by = VALUES(updated_by)", [$k, $v, $adminId]);
+        }
+        Response::ok();
+    }
+
+    if ($action === 'test_mail') {
+        $adminId = Session::adminId(); if (!$adminId) Response::error('Nur Admin', 403);
+        $to = trim((string)($body['to_email'] ?? ''));
+        if (!filter_var($to, FILTER_VALIDATE_EMAIL)) Response::error('Gültige Test-Adresse erforderlich');
+        $provider = lic_cfg($db, 'mail_provider', 'server');
+        if ($provider !== 'server') Response::error('Aktiver Treiber „' . $provider . '" ist noch nicht verfügbar. Auf „server" stellen.');
+        try {
+            Mailer::sendWithAttachments($to, 'GeoGraSim — Test-Mail',
+                Mailer::renderPlainBody("Test-Mail aus der Lizenz-Verwaltung.\nAbsender und Versand funktionieren."),
+                'Test-Mail — Versand funktioniert.');
+            Response::ok(['status' => 'sent']);
+        } catch (\Throwable $e) { Response::error('Versand fehlgeschlagen: ' . $e->getMessage(), 500); }
+    }
+
     Response::error('Unbekannte Aktion');
 }
 

App/php/lib/Mailer.php

@@ -16,13 +16,30 @@ class Mailer {
         $mail->SMTPSecure = \PHPMailer\PHPMailer\PHPMailer::ENCRYPTION_STARTTLS;
         $mail->Port       = defined('SMTP_PORT') ? (int)SMTP_PORT : 587;
         $mail->CharSet    = 'UTF-8';
-        $mail->setFrom(
+        [$fromEmail, $fromName] = self::configuredFrom();
-            defined('SMTP_FROM') ? SMTP_FROM : 'support@geograsim.at',
+        $mail->setFrom($fromEmail, $fromName);
-            defined('SMTP_FROM_NAME') ? SMTP_FROM_NAME : 'GeoGraSim'
-        );
         return $mail;
     }
 
+    /** Absender aus Admin-Config (platform_config_v2), Fallback auf .env-Konstanten.
+     *  SMTP-Zugangsdaten bleiben bewusst in .env (geheim) — nur die sichtbare
+     *  Absenderadresse/-name ist zentral in der Admin-Oberflaeche pflegbar. */
+    private static function configuredFrom(): array {
+        $email = defined('SMTP_FROM') ? SMTP_FROM : 'support@geograsim.at';
+        $name  = defined('SMTP_FROM_NAME') ? SMTP_FROM_NAME : 'GeoGraSim';
+        try {
+            if (class_exists('Database')) {
+                $rows = Database::get()->fetchAll(
+                    "SELECT skey, sval FROM app_settings WHERE skey IN ('mail_from_email','mail_from_name')");
+                foreach ($rows as $row) {
+                    if ($row['skey'] === 'mail_from_email' && !empty($row['sval'])) $email = $row['sval'];
+                    if ($row['skey'] === 'mail_from_name'  && !empty($row['sval'])) $name  = $row['sval'];
+                }
+            }
+        } catch (\Throwable $e) { /* Config nicht verfuegbar -> Defaults */ }
+        return [$email, $name];
+    }
+
     public static function send(string $to, string $subject, string $htmlBody, string $textBody = ''): bool {
         try {
             $mail = self::create();

App/teacher.html

@@ -431,8 +431,12 @@ schueler01,Max M.,,,,,</pre>
 <div class="modal hidden" id="modal-license">
   <div class="modal-card">
     <h3>🔑 Lizenzen einlösen</h3>
-    <p style="font-size:.7rem;color:#8a8a8a;margin-bottom:.5rem">Ein oder mehrere Codes (einer pro Zeile):</p>
+    <p style="font-size:.7rem;color:#8a8a8a;margin-bottom:.5rem">Ein oder mehrere Codes (einer pro Zeile) — oder eine .txt/.csv-Datei ablegen:</p>
-    <textarea id="ml-codes" rows="4" style="font-family:'Courier New',monospace" placeholder="ABCD-EFGH-JKLM-2026"></textarea>
+    <textarea id="ml-codes" rows="4" style="font-family:'Courier New',monospace" placeholder="ABCD-EFGH-JKLM-NPQR-STUV"></textarea>
+    <div id="ml-drop" style="margin-top:.4rem;border:1.5px dashed #cbd8dc;border-radius:8px;padding:.5rem;text-align:center;font-size:.66rem;color:#8a8a8a;cursor:pointer" ondragover="event.preventDefault();this.style.background='#eef6f8'" ondragleave="this.style.background=''" ondrop="licenseDrop(event)">
+      📄 .txt/.csv hierher ziehen oder <label style="color:#4a7c8a;font-weight:700;cursor:pointer;text-decoration:underline">auswählen<input type="file" id="ml-file" accept=".txt,.csv,text/plain,text/csv" style="display:none" onchange="licenseFilePick(this)"></label>
+      <div id="ml-fileinfo" style="margin-top:.2rem"></div>
+    </div>
     <div style="display:flex;gap:.4rem;margin-top:.5rem">
       <button class="btn" onclick="redeemLicenses()">Einlösen</button>
       <button class="btn btn-outline" onclick="hideModal('modal-license')">Abbrechen</button>
@@ -5512,6 +5516,35 @@ async function assignLicense(studentId) {
   loadLicenses();
 }
 
+// Sicherer Datei-Import fuer Codes — mehrstufig:
+// (1) Endung+MIME .txt/.csv, (2) Groessenlimit, (3) NUR als Text lesen,
+// (4) Whitelist-Regex extrahiert ausschliesslich Code-Tokens (nichts wird
+//     interpretiert/gerendert/ausgefuehrt), (5) Server validiert jeden Code.
+function extractCodes(text){
+  var m = String(text).toUpperCase().match(/\b[A-Z0-9]{4}(?:-[A-Z0-9]{4}){2,4}\b/g) || [];
+  var seen={}, out=[];
+  for (var i=0;i<m.length;i++){ var c=m[i]; if(!seen[c]){ seen[c]=1; out.push(c); } if(out.length>=5000) break; }
+  return out;
+}
+function ingestLicenseFile(file){
+  var info=document.getElementById('ml-fileinfo'); if(!file) return;
+  var name=(file.name||'').toLowerCase();
+  if(!/\.(txt|csv)$/.test(name) || (file.type && !/^text\//.test(file.type))){
+    info.innerHTML='<span style="color:#c07a6b">Nur .txt oder .csv erlaubt.</span>'; return; }
+  if(file.size > 256*1024){ info.innerHTML='<span style="color:#c07a6b">Datei zu groß (max 256 KB).</span>'; return; }
+  var reader=new FileReader();
+  reader.onload=function(){
+    var codes=extractCodes(reader.result);
+    if(!codes.length){ info.innerHTML='<span style="color:#c07a6b">Keine gültigen Codes gefunden.</span>'; return; }
+    document.getElementById('ml-codes').value=codes.join('\n');
+    info.innerHTML='<span style="color:#5a8a5e">'+codes.length+' Codes aus Datei übernommen.</span>';
+  };
+  reader.onerror=function(){ info.innerHTML='<span style="color:#c07a6b">Datei konnte nicht gelesen werden.</span>'; };
+  reader.readAsText(file);
+}
+function licenseFilePick(input){ if(input.files && input.files[0]) ingestLicenseFile(input.files[0]); input.value=''; }
+function licenseDrop(ev){ ev.preventDefault(); if(ev.currentTarget) ev.currentTarget.style.background=''; var f=ev.dataTransfer && ev.dataTransfer.files && ev.dataTransfer.files[0]; if(f) ingestLicenseFile(f); }
+
 async function redeemLicenses() {
   var text = document.getElementById('ml-codes').value.trim();
   if (!text) return;