Rebrand app icons around Burrow owl

evolution/proposals/BEP-0010-platform-services-core-and-distribution.md

@@ -137,6 +137,15 @@ production services are enabled.
     OpenTofu while the project migrates deeper native rules selectively.
   - Namespace cache setup remains the fast path for remote Bazel and local disk
     caches.
+- Use a shared Burrow owl identity across app shells:
+  - `design/brand/burrow-owl-icon-master.png` is the generated raster master for
+    Apple app icon outputs.
+  - Apple asset catalogs derive all `AppIcon` PNG sizes from that master and
+    use a restrained warm brown/gold accent color.
+  - GTK keeps a simple vector owl/burrow icon and symbolic icon so Linux
+    desktops do not inherit the old blue gear-style mark.
+  - Brown/black stays the core palette, with lighter brown, orange, or gold used
+    only as accents for eyes, beak, highlights, and platform tint.
 - For Linux distribution, split the GUI package from the privileged daemon:
   - DEB, RPM, pacman, AUR, and the NixOS flake/module install `burrowd`,
     systemd units, D-Bus policy, and polkit policy.