Brand assets: node-mesh favicon + PWA icons + manifest palette

The token redesign couldn't touch static rasters/config — these were still the
old claw mark + old coral. Regenerate favicon (icon.svg + icon.png) and PWA
icons (192/512) as the node-mesh glyph; manifest theme_color #f96565→#ff6f61,
background #121212→#08080a; refresh the description/tagline.

Co-Authored-By: Claude Opus 4.8 <[email protected]>

frontend/src/app/manifest.ts

@@ -6,11 +6,11 @@ export default function manifest(): MetadataRoute.Manifest {
   return {
     name: "Clawmates",
     short_name: "Clawmates",
-    description: "Collaborative AI agents with human-in-the-loop safety.",
+    description: "Deploy agents at any scale — a single claw to a whole org.",
     start_url: "/",
     display: "standalone",
-    background_color: "#121212",
-    theme_color: "#f96565",
+    background_color: "#08080a",
+    theme_color: "#ff6f61",
     icons: [
       { src: "/icons/icon-192.png", sizes: "192x192", type: "image/png" },
       {