assets: refresh layer toggle SVG icons

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

assets/icons/layers/layulk.svg

@@ -1,11 +1,58 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="64" height="64">
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   viewBox="0 0 24 24"
+   width="64"
+   height="64"
+   version="1.1"
+   id="svg1"
+   sodipodi:docname="layulk.svg"
+   inkscape:version="1.4.4 (dcaf3e7d9e, 2026-05-05)"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <defs
+     id="defs1" />
+  <sodipodi:namedview
+     id="namedview1"
+     pagecolor="#505050"
+     bordercolor="#eeeeee"
+     borderopacity="1"
+     inkscape:showpageshadow="0"
+     inkscape:pageopacity="0"
+     inkscape:pagecheckerboard="0"
+     inkscape:deskcolor="#505050"
+     inkscape:zoom="7.1243729"
+     inkscape:cx="16.141772"
+     inkscape:cy="25.335563"
+     inkscape:window-width="1920"
+     inkscape:window-height="939"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg1" />
   <!-- Shackle (open — shifted to right, lifted) -->
-  <path d="M9 11 V7 a3.5 3.5 0 0 1 7 0 V5.5"
-        fill="none" stroke="#e0e0e0" stroke-width="1.7" stroke-linecap="round" stroke-linejoin="round"/>
+  <path
+     d="M 6.8200511,10.702101 V 5.6227363 c 0,-5.92592391 10.6566279,-5.92592391 10.6566279,0"
+     fill="none"
+     stroke="#e0e0e0"
+     stroke-width="2.15873"
+     stroke-linecap="round"
+     stroke-linejoin="round"
+     id="path1"
+     sodipodi:nodetypes="csc"
+     style="stroke-width:2.25;stroke-dasharray:none" />
   <!-- Lock body -->
-  <rect x="6" y="11" width="12" height="9" rx="1.5"
-        fill="none" stroke="#f0c040" stroke-width="1.6"/>
+  <rect
+     x="4.8186216"
+     y="11.405282"
+     width="15.238096"
+     height="11.428573"
+     rx="1.904762"
+     fill="none"
+     stroke="#f0c040"
+     stroke-width="2.03175"
+     id="rect1"
+     style="stroke-width:2.25;stroke-dasharray:none" />
   <!-- Keyhole (open = unlocked state: outline only) -->
-  <circle cx="12" cy="15" r="1.6" fill="none" stroke="#f0c040" stroke-width="1.3"/>
-  <line x1="12" y1="16.6" x2="12" y2="19" stroke="#f0c040" stroke-width="1.5" stroke-linecap="round"/>
 </svg>