feat(icons): bundled Tabler device icon set

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

public/icons/devices/unknown.svg

@@ -0,0 +1,21 @@
+<!--
+category: System
+tags: [mystery, undefined, unclear, unidentified, uncertain, ambiguous, obscure, unseen, anonymous, unspecified]
+unicode: "fef4"
+version: "3.5"
+-->
+<svg
+  xmlns="http://www.w3.org/2000/svg"
+  width="24"
+  height="24"
+  viewBox="0 0 24 24"
+  fill="none"
+  stroke="currentColor"
+  stroke-width="2"
+  stroke-linecap="round"
+  stroke-linejoin="round"
+>
+  <path d="M5 5a2 2 0 0 1 2 -2h10a2 2 0 0 1 2 2v14a2 2 0 0 1 -2 2h-10a2 2 0 0 1 -2 -2l0 -14" />
+  <path d="M12 16v.01" />
+  <path d="M12 13a2 2 0 0 0 .914 -3.782a1.98 1.98 0 0 0 -2.414 .483" />
+</svg>