fix: preserve parallel n mark strokes

frontend/src/assets/images/1panel-logo.svg

@@ -1,5 +1,5 @@
 <svg width="120" height="33" viewBox="0 0 120 33" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
   <path d="M16.5 2.25 29.5 9.75v15L16.5 32.25l-13-7.5v-15l13-7.5Z" fill="none" stroke="currentColor" stroke-width="3" stroke-linejoin="round"/>
-  <path d="M11 23V13.25l5.5-3.25 5.5 3.25V23" fill="none" stroke="currentColor" stroke-width="3" stroke-linejoin="round"/>
+  <path d="M10 20V13l6.5-3.75L23 13v7l-3.5 2v-7.5l-3-1.73-3 1.73V22l-3.5-2Z" fill="currentColor"/>
   <text x="38" y="23" font-family="Arial, sans-serif" font-size="22" font-weight="700" letter-spacing="0">nPanel</text>
 </svg>

frontend/src/assets/images/1panel-menu-logo.svg

@@ -1,4 +1,4 @@
 <svg width="33" height="33" viewBox="0 0 33 33" fill="none" xmlns="http://www.w3.org/2000/svg">
   <path d="M16.5 2.25 29.5 9.75v15L16.5 32.25l-13-7.5v-15l13-7.5Z" stroke="currentColor" stroke-width="3" stroke-linejoin="round"/>
-  <path d="M11 23V13.25l5.5-3.25 5.5 3.25V23" stroke="currentColor" stroke-width="3" stroke-linejoin="round"/>
+  <path d="M10 20V13l6.5-3.75L23 13v7l-3.5 2v-7.5l-3-1.73-3 1.73V22l-3.5-2Z" fill="currentColor"/>
 </svg>

frontend/src/assets/images/favicon.svg

@@ -1,4 +1,4 @@
 <svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
   <path d="M12 1.5 21.1 6.75v10.5L12 22.5l-9.1-5.25V6.75L12 1.5Z" stroke="currentColor" stroke-width="2.2" stroke-linejoin="round"/>
-  <path d="M8.25 17V9.6L12 7.4l3.75 2.2V17" stroke="currentColor" stroke-width="2.2" stroke-linejoin="round"/>
+  <path d="M7.25 15.4V9.5L12 6.75l4.75 2.75v5.9l-2.55 1.45v-6.3L12 9.27l-2.2 1.28v6.3l-2.55-1.45Z" fill="currentColor"/>
 </svg>