diff --git a/backend/main.py b/backend/main.py
index ecfa6cf..c92a3b7 100644
--- a/backend/main.py
+++ b/backend/main.py
@@ -406,7 +406,7 @@ async def serve_media(path: str, request: _Request):
         raise _HE(404, "Nicht gefunden.")
     return _media_response(filepath)
 
-APP_VER = "910"  # muss mit APP_VER in app.js übereinstimmen
+APP_VER = "911"  # muss mit APP_VER in app.js übereinstimmen
 
 @app.get("/.well-known/assetlinks.json")
 async def assetlinks():
diff --git a/backend/static/index.html b/backend/static/index.html
index 348833f..eb60b1f 100644
--- a/backend/static/index.html
+++ b/backend/static/index.html
@@ -591,10 +591,10 @@
 <div id="modal-container"></div>
 
 <!-- JS: Reihenfolge ist wichtig — erst Basis, dann Features -->
-<script src="/js/api.js?v=910"></script>
-<script src="/js/ui.js?v=910"></script>
-<script src="/js/app.js?v=910"></script>
-<script src="/js/worlds.js?v=910"></script>
+<script src="/js/api.js?v=911"></script>
+<script src="/js/ui.js?v=911"></script>
+<script src="/js/app.js?v=911"></script>
+<script src="/js/worlds.js?v=911"></script>
 
 <!-- Feature-Seiten werden lazy geladen -->
 
diff --git a/backend/static/js/app.js b/backend/static/js/app.js
index e40d8e0..c6adb33 100644
--- a/backend/static/js/app.js
+++ b/backend/static/js/app.js
@@ -3,7 +3,7 @@
    Router, State-Management, Navigation, Initialisierung.
    ============================================================ */
 
-const APP_VER     = '910'; // ← bei jedem Deploy mit Frontend-Änderungen erhöhen
+const APP_VER     = '911'; // ← bei jedem Deploy mit Frontend-Änderungen erhöhen
 const APP_VERSION = '1.5.1'; // ← semantische Version, wird bei make release gesetzt
 const IS_STAGING  = location.hostname === 'staging.banyaro.app';
 // Cache-Bust-Parameter nach Update-Reload sofort entfernen
diff --git a/backend/static/js/pages/laeufi.js b/backend/static/js/pages/laeufi.js
index 6a734b2..0a0d14b 100644
--- a/backend/static/js/pages/laeufi.js
+++ b/backend/static/js/pages/laeufi.js
@@ -33,17 +33,17 @@ window.Page_laeufi = (() => {
   // Grundstruktur
   // ----------------------------------------------------------
   function _privateHeader() {
-    const zwinger = _breederInfo?.zwingername || '';
+    const zwinger = _breederInfo?.zwingername || 'Mein Zwinger';
     const logoUrl = _breederInfo?.logo_url   || null;
     const logoHtml = logoUrl
       ? `<img src="${UI.esc(logoUrl)}" alt="Logo"
-              style="width:40px;height:40px;border-radius:50%;object-fit:cover;
+              style="width:48px;height:48px;border-radius:50%;object-fit:cover;
                      border:2px solid rgba(196,132,58,.5);flex-shrink:0"
               onerror="this.style.display='none'">`
-      : `<div style="width:40px;height:40px;border-radius:50%;background:rgba(196,132,58,.15);
-                     border:2px solid rgba(196,132,58,.3);display:flex;align-items:center;
+      : `<div style="width:48px;height:48px;border-radius:50%;background:rgba(196,132,58,.15);
+                     border:2px solid rgba(196,132,58,.4);display:flex;align-items:center;
                      justify-content:center;flex-shrink:0">
-           <svg style="width:20px;height:20px;color:var(--c-primary)" viewBox="0 0 256 256">
+           <svg style="width:24px;height:24px;color:var(--c-primary)" viewBox="0 0 256 256">
              <use href="/icons/phosphor.svg#paw-print"></use>
            </svg>
          </div>`;
@@ -54,9 +54,10 @@ window.Page_laeufi = (() => {
                   display:flex;align-items:center;gap:var(--space-3)">
         ${logoHtml}
         <div style="flex:1;min-width:0">
-          ${zwinger ? `<div style="font-size:var(--text-sm);font-weight:700;color:rgba(255,255,255,.9);
-                            white-space:nowrap;overflow:hidden;text-overflow:ellipsis">${UI.esc(zwinger)}</div>` : ''}
-          <div style="display:flex;align-items:center;gap:var(--space-2);margin-top:1px">
+          <h2 style="margin:0 0 2px;font-size:var(--text-lg);font-weight:700;
+                     color:rgba(255,255,255,.95);white-space:nowrap;overflow:hidden;
+                     text-overflow:ellipsis;line-height:1.2">${UI.esc(zwinger)}</h2>
+          <div style="display:flex;align-items:center;gap:var(--space-2)">
             <svg style="width:11px;height:11px;color:var(--c-primary);flex-shrink:0" viewBox="0 0 256 256">
               <use href="/icons/phosphor.svg#lock-key"></use>
             </svg>
diff --git a/backend/static/js/pages/litters.js b/backend/static/js/pages/litters.js
index 6cf7320..801200f 100644
--- a/backend/static/js/pages/litters.js
+++ b/backend/static/js/pages/litters.js
@@ -98,17 +98,17 @@ window.Page_litters = (() => {
   // Grundstruktur rendern
   // ----------------------------------------------------------
   function _privateHeader() {
-    const zwinger = _breederInfo?.zwingername || '';
+    const zwinger = _breederInfo?.zwingername || 'Mein Zwinger';
     const logoUrl = _breederInfo?.logo_url   || null;
     const logoHtml = logoUrl
       ? `<img src="${_esc(logoUrl)}" alt="Logo"
-              style="width:40px;height:40px;border-radius:50%;object-fit:cover;
+              style="width:48px;height:48px;border-radius:50%;object-fit:cover;
                      border:2px solid rgba(196,132,58,.5);flex-shrink:0"
               onerror="this.style.display='none'">`
-      : `<div style="width:40px;height:40px;border-radius:50%;background:rgba(196,132,58,.15);
-                     border:2px solid rgba(196,132,58,.3);display:flex;align-items:center;
+      : `<div style="width:48px;height:48px;border-radius:50%;background:rgba(196,132,58,.15);
+                     border:2px solid rgba(196,132,58,.4);display:flex;align-items:center;
                      justify-content:center;flex-shrink:0">
-           <svg style="width:20px;height:20px;color:var(--c-primary)" viewBox="0 0 256 256">
+           <svg style="width:24px;height:24px;color:var(--c-primary)" viewBox="0 0 256 256">
              <use href="/icons/phosphor.svg#paw-print"></use>
            </svg>
          </div>`;
@@ -119,9 +119,10 @@ window.Page_litters = (() => {
                   display:flex;align-items:center;gap:var(--space-3)">
         ${logoHtml}
         <div style="flex:1;min-width:0">
-          ${zwinger ? `<div style="font-size:var(--text-sm);font-weight:700;color:rgba(255,255,255,.9);
-                            white-space:nowrap;overflow:hidden;text-overflow:ellipsis">${_esc(zwinger)}</div>` : ''}
-          <div style="display:flex;align-items:center;gap:var(--space-2);margin-top:1px">
+          <h2 style="margin:0 0 2px;font-size:var(--text-lg);font-weight:700;
+                     color:rgba(255,255,255,.95);white-space:nowrap;overflow:hidden;
+                     text-overflow:ellipsis;line-height:1.2">${_esc(zwinger)}</h2>
+          <div style="display:flex;align-items:center;gap:var(--space-2)">
             <svg style="width:11px;height:11px;color:var(--c-primary);flex-shrink:0" viewBox="0 0 256 256">
               <use href="/icons/phosphor.svg#lock-key"></use>
             </svg>
diff --git a/backend/static/js/pages/zuchthunde.js b/backend/static/js/pages/zuchthunde.js
index 5fcb2e9..281d66d 100644
--- a/backend/static/js/pages/zuchthunde.js
+++ b/backend/static/js/pages/zuchthunde.js
@@ -100,30 +100,31 @@ window.Page_zuchthunde = (() => {
   // Grundstruktur
   // ----------------------------------------------------------
   function _privateHeader() {
-    const zwinger  = _breederInfo?.zwingername || '';
-    const logoUrl  = _breederInfo?.logo_url   || null;
+    const zwinger = _breederInfo?.zwingername || 'Mein Zwinger';
+    const logoUrl = _breederInfo?.logo_url   || null;
     const logoHtml = logoUrl
       ? `<img src="${_esc(logoUrl)}" alt="Logo"
-              style="width:40px;height:40px;border-radius:50%;object-fit:cover;
+              style="width:48px;height:48px;border-radius:50%;object-fit:cover;
                      border:2px solid rgba(196,132,58,.5);flex-shrink:0"
               onerror="this.style.display='none'">`
-      : `<div style="width:40px;height:40px;border-radius:50%;background:rgba(196,132,58,.15);
-                     border:2px solid rgba(196,132,58,.3);display:flex;align-items:center;
+      : `<div style="width:48px;height:48px;border-radius:50%;background:rgba(196,132,58,.15);
+                     border:2px solid rgba(196,132,58,.4);display:flex;align-items:center;
                      justify-content:center;flex-shrink:0">
-           <svg style="width:20px;height:20px;color:var(--c-primary)" viewBox="0 0 256 256">
+           <svg style="width:24px;height:24px;color:var(--c-primary)" viewBox="0 0 256 256">
              <use href="/icons/phosphor.svg#paw-print"></use>
            </svg>
          </div>`;
     return `
-      <div style="background:linear-gradient(135deg,#1a1208,#2d1f0e);
+      <div id="breeder-private-header" style="background:linear-gradient(135deg,#1a1208,#2d1f0e);
                   border-bottom:1px solid rgba(196,132,58,.25);
                   padding:var(--space-3) var(--space-4);
                   display:flex;align-items:center;gap:var(--space-3)">
         ${logoHtml}
         <div style="flex:1;min-width:0">
-          ${zwinger ? `<div style="font-size:var(--text-sm);font-weight:700;color:rgba(255,255,255,.9);
-                            white-space:nowrap;overflow:hidden;text-overflow:ellipsis">${_esc(zwinger)}</div>` : ''}
-          <div style="display:flex;align-items:center;gap:var(--space-2);margin-top:1px">
+          <h2 style="margin:0 0 2px;font-size:var(--text-lg);font-weight:700;
+                     color:rgba(255,255,255,.95);white-space:nowrap;overflow:hidden;
+                     text-overflow:ellipsis;line-height:1.2">${_esc(zwinger)}</h2>
+          <div style="display:flex;align-items:center;gap:var(--space-2)">
             <svg style="width:11px;height:11px;color:var(--c-primary);flex-shrink:0" viewBox="0 0 256 256">
               <use href="/icons/phosphor.svg#lock-key"></use>
             </svg>
diff --git a/backend/static/sw.js b/backend/static/sw.js
index c532543..9b7b53d 100644
--- a/backend/static/sw.js
+++ b/backend/static/sw.js
@@ -3,7 +3,7 @@
    Offline-Cache + Push Notifications + Tile-Cache
    ============================================================ */
 
-const CACHE_VERSION = 'by-v910';
+const CACHE_VERSION = 'by-v911';
 const CACHE_STATIC  = `${CACHE_VERSION}-static`;
 const CACHE_TILES   = 'ban-yaro-tiles-v1';  // bleibt über SW-Updates erhalten
 const CACHE_API     = 'ban-yaro-api-v1';    // API-Response-Cache