fix(devices): recolor bundled icons to theme light + larger size (2.5.1)

Tabler icons use currentColor which doesn't inherit through <img>, so they
rendered black on the dark theme. Bake --text (#e8e6ed) into the 15 bundled
SVGs and bump icon sizes (tile 20->30px, picker 22->28px).

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

public/icons/devices/unknown.svg

@@ -10,7 +10,7 @@ version: "3.5"
   height="24"
   viewBox="0 0 24 24"
   fill="none"
-  stroke="currentColor"
+  stroke="#e8e6ed"
   stroke-width="2"
   stroke-linecap="round"
   stroke-linejoin="round"