Fix Android safe-area handling and window maximization

- Fix extension signature verification on Android by canonicalizing paths (symlink compatibility)
- Implement proper safe-area-inset handling for mobile devices
- Add reactive header height measurement to UI store
- Fix maximized window positioning to respect safe-areas and header
- Create reusable HaexDebugOverlay component for mobile debugging
- Fix Swiper navigation by using absolute positioning instead of flex-1
- Remove debug logging after Android compatibility confirmed

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

src/assets/css/main.css

@@ -14,18 +14,44 @@
     @apply cursor-not-allowed;
   }
 
+  /* Define safe-area-insets as CSS custom properties for JavaScript access */
+  :root {
+    --safe-area-inset-top: env(safe-area-inset-top, 0px);
+    --safe-area-inset-bottom: env(safe-area-inset-bottom, 0px);
+    --safe-area-inset-left: env(safe-area-inset-left, 0px);
+    --safe-area-inset-right: env(safe-area-inset-right, 0px);
+  }
+
+  /* Verhindere Scrolling auf html und body */
+  html {
+    overflow: hidden;
+    margin: 0;
+    padding: 0;
+    height: 100dvh;
+    height: 100vh; /* Fallback */
+    width: 100%;
+  }
+
+  body {
+    overflow: hidden;
+    margin: 0;
+    height: 100%;
+    width: 100%;
+    padding: 0;
+  }
+
   #__nuxt {
-    /* Stellt sicher, dass die App immer die volle Höhe hat */
-    min-height: 100vh;
+    /* Volle Höhe des body */
+    height: 100%;
+    width: 100%;
 
-    /* Sorgt dafür, dass Padding die Höhe nicht sprengt */
-    @apply box-border;
+    /* Safe-Area Paddings auf root element - damit ALLES davon profitiert */
+    padding-top: var(--safe-area-inset-top);
+    padding-bottom: var(--safe-area-inset-bottom);
+    padding-left: var(--safe-area-inset-left);
+    padding-right: var(--safe-area-inset-right);
 
-    /* Die Safe-Area Paddings */
-    padding-top: env(safe-area-inset-top);
-    padding-bottom: env(safe-area-inset-bottom);
-    padding-left: env(safe-area-inset-left);
-    padding-right: env(safe-area-inset-right);
+    box-sizing: border-box;
   }
 }