feat: default quicklinks, static PDF downloads, improved app icon

public/app.html

@@ -622,6 +622,7 @@ main {
 .ql-del { position: absolute; top: 3px; right: 4px; font-size: 10px; color: var(--text-subtle); display: none; border: none; background: none; cursor: pointer; line-height: 1; }
 .ql-item:hover .ql-del { display: block; }
 .ql-del:hover { color: var(--red); }
+.ql-item--soon { opacity: .4; cursor: not-allowed; pointer-events: none; }
 
 /* ── EMPTY STATE ─────────────────────────────────────────── */
 
@@ -1418,8 +1419,12 @@ footer {
           <button class="add-btn" id="btn-add-ql" style="display:none" onclick="openModal('quicklinks')">+ Link</button>
         </div>
         <div class="card-body"><div class="ql-grid" id="ql-grid">
-          <a class="ql-item" href="https://www.ifb-schulen.de" target="_blank" rel="noopener"><span class="ql-icon"><i data-lucide="building-2" aria-hidden="true"></i></span>IFB Website</a>
+          <span class="ql-item ql-item--soon" title="Demnächst verfügbar"><span class="ql-icon"><i data-lucide="award" aria-hidden="true"></i></span>Notenportal</span>
-          <a class="ql-item" href="https://www.bib-info.de" target="_blank" rel="noopener"><span class="ql-icon"><i data-lucide="book-open" aria-hidden="true"></i></span>Bibliothek</a>
+          <a class="ql-item" href="https://github.com/lulinretrograde/ifb-schulapp" target="_blank" rel="noopener"><span class="ql-icon"><i data-lucide="github" aria-hidden="true"></i></span>Quellcode</a>
+          <a class="ql-item" href="https://ifb-rosenheim.de/" target="_blank" rel="noopener"><span class="ql-icon"><i data-lucide="building-2" aria-hidden="true"></i></span>IFB-Website</a>
+          <a class="ql-item" href="https://webentwicklerkurs.de/" target="_blank" rel="noopener"><span class="ql-icon"><i data-lucide="globe" aria-hidden="true"></i></span>Webentwicklerkurs</a>
+          <a class="ql-item" href="https://pythonentwicklerkurs.de/" target="_blank" rel="noopener"><span class="ql-icon"><i data-lucide="terminal" aria-hidden="true"></i></span>Pythonentwicklerkurs</a>
+          <a class="ql-item" href="https://kientwicklerkurs.de/" target="_blank" rel="noopener"><span class="ql-icon"><i data-lucide="bot" aria-hidden="true"></i></span>KI-Entwicklerkurs</a>
         </div></div>
       </div>
 
@@ -2978,8 +2983,22 @@ async function delTeacherGrade(id){
 async function loadStudentMaterials(){
   const mats=await api('GET','teacher/materials/class/info1');
   const el=document.getElementById('list-student-materials');
-  if(!mats||mats.error||!mats.length){el.innerHTML='<div class="empty">Keine Materialien vorhanden</div>';return;}
+  const staticItems=`<div class="file-item">
-  el.innerHTML=mats.map(m=>`<div class="file-item">
+    <div class="file-icon">📕</div>
+    <div class="file-info">
+      <div class="file-name">Stundenplan ab 02.03.26</div>
+      <div class="file-meta">PDF · Allgemein</div>
+    </div>
+    <a class="file-dl" href="/downloads/Stundenplan_ab_02_03_26.pdf" download="Stundenplan_ab_02_03_26.pdf">↓ Laden</a>
+  </div><div class="file-item">
+    <div class="file-icon">📕</div>
+    <div class="file-info">
+      <div class="file-name">Klausurenplan ab 06.03.26</div>
+      <div class="file-meta">PDF · Allgemein</div>
+    </div>
+    <a class="file-dl" href="/downloads/Klausurenplan_ab_06_03_26.pdf" download="Klausurenplan_ab_06_03_26.pdf">↓ Laden</a>
+  </div>`;
+  const dynItems=(!mats||mats.error||!mats.length)?'':mats.map(m=>`<div class="file-item">
     <div class="file-icon">${fileIcon(m.mime_type)}</div>
     <div class="file-info">
       <div class="file-name">${esc(m.title)}</div>
@@ -2987,6 +3006,7 @@ async function loadStudentMaterials(){
     </div>
     <button class="file-dl" onclick="window.location.href='/api/teacher/materials/${m.id}/download'">↓ Laden</button>
   </div>`).join('');
+  el.innerHTML=staticItems+dynItems;
 }
 
 async function loadStudentAnnouncements(){

public/favicon.svg

@@ -1,7 +1,7 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32">
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512">
-  <rect width="32" height="32" rx="6" fill="#2563eb"/>
+  <rect width="512" height="512" rx="96" fill="#2563eb"/>
-  <polygon points="16,7 29,13 16,19 3,13" fill="white"/>
+  <polygon points="256,76 480,188 256,300 32,188" fill="white"/>
-  <path d="M9.5,15.5 L9.5,22 Q16,26 22.5,22 L22.5,15.5" fill="white"/>
+  <path d="M128,216 L128,326 C128,384 186,428 256,428 C326,428 384,384 384,326 L384,216 L256,300 Z" fill="white"/>
-  <line x1="29" y1="13" x2="29" y2="20.5" stroke="white" stroke-width="2" stroke-linecap="round"/>
+  <rect x="462" y="188" width="18" height="118" rx="9" fill="white"/>
-  <circle cx="29" cy="22" r="1.8" fill="white"/>
+  <circle cx="471" cy="330" r="28" fill="white"/>
 </svg>

public/sw.js

@@ -1,4 +1,4 @@
-const CACHE = 'klassenportal-v1';
+const CACHE = 'klassenportal-v2';
 const PRECACHE = [
   '/',
   '/login.html',