From 84386e93d09ed678da7b7c110758a0cd0ae6899c Mon Sep 17 00:00:00 2001
From: Thomas <dornbirn@gmx.at>
Date: Mon, 20 Jul 2026 14:51:48 +0200
Subject: [PATCH] =?UTF-8?q?Lehrer:=20Default-Klasse=20=3D=20zuletzt=20gew?=
 =?UTF-8?q?=C3=A4hlte=20(persistent),=20Fallback=20=C3=A4lteste?=
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Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 App/teacher.html | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/App/teacher.html b/App/teacher.html
index a003f43..ac502f1 100644
--- a/App/teacher.html
+++ b/App/teacher.html
@@ -2004,7 +2004,17 @@ async function loadClasses() {
     opt.value = c.id; opt.textContent = c.name + ' (' + c.school_year + ')';
     sel.appendChild(opt);
   });
-  if (!currentClassId) currentClassId = classes[0].id;
+  // Default-Klasse: zuletzt gewählte (persistent gemerkt), sonst die ÄLTESTE.
+  if (!currentClassId) {
+    var saved = null;
+    try { saved = parseInt(localStorage.getItem('ggs-last-class'), 10); } catch(_) {}
+    if (saved && classes.some(function(c){ return c.id === saved; })) {
+      currentClassId = saved;
+    } else {
+      var byAge = classes.slice().sort(function(a,b){ return (a.created_at||'') < (b.created_at||'') ? -1 : 1; });
+      currentClassId = byAge[0].id;   // älteste zuerst
+    }
+  }
   sel.value = currentClassId;
   currentClass = classes.find(function(c) { return c.id === currentClassId; });
   document.getElementById('class-code').textContent = currentClass?.join_code || '—';
@@ -2025,6 +2035,7 @@ async function loadClasses() {
 
 function onClassChange() {
   currentClassId = parseInt(document.getElementById('class-select').value);
+  try { localStorage.setItem('ggs-last-class', currentClassId); } catch(_) {}   // „letzter Aufruf" merken
   currentClass = allClasses.find(function(c) { return c.id === currentClassId; });
   document.getElementById('class-code').textContent = currentClass?.join_code || '—';
   loadTab(currentTab);