Refine Burrow owl icon source

design/brand/README.md

@@ -1,12 +1,46 @@
 # Burrow Brand Source
 
 `burrow-owl-icon-master.png` is the current generated master for the Burrow app
-icon. The mark centers a burrowing owl in a dark brown/black field with minimal
-warm brown and gold accents.
+icon. The mark centers a leg-forward burrowing owl in a dark brown/black field
+with minimal warm brown and gold accents.
 
-Regenerate the Apple app icon PNGs from the master with:
+The editable source is split by intent:
+
+- `burrowing-owl-icon-source.svg` is the human-readable vector source.
+- `icon-layers/*.svg` are the transparent source layers used to regenerate the
+  Icon Composer package.
+- `Burrow.icon` is the Icon Composer document. Keep it to three broad raster
+  layers: `burrow-ground`, `owl-figure`, and `owl-legs`.
+- `burrowing-owl-concept-v2.png` is reference art only; do not use it directly
+  as an app icon.
+
+That layer count is intentional. The identifying cue is the long Burrowing Owl
+leg silhouette, so Icon Composer should receive broad shape planes instead of
+small decorative SVG layers. Face and spot details are flattened into
+`owl-figure.png`; the legs stay in the front layer so they survive small sizes.
+
+Regenerate the Icon Composer layer assets and Apple app icon PNGs with:
 
 ```bash
+for src in design/brand/icon-layers/*.svg; do
+  name="$(basename "$src" .svg)"
+  sips -s format png "$src" --out "design/brand/Burrow.icon/Assets/${name}.png" >/dev/null
+done
+magick \
+  design/brand/Burrow.icon/Assets/owl-body.png \
+  design/brand/Burrow.icon/Assets/owl-face.png \
+  design/brand/Burrow.icon/Assets/owl-spots.png \
+  -background none -layers merge -strip \
+  PNG32:design/brand/Burrow.icon/Assets/owl-figure.png
+"/Applications/Xcode/Xcode.app/Contents/Applications/Icon Composer.app/Contents/Executables/ictool" \
+  design/brand/Burrow.icon \
+  --export-image \
+  --output-file design/brand/burrow-owl-icon-master.png \
+  --platform iOS \
+  --rendition Default \
+  --width 1024 \
+  --height 1024 \
+  --scale 1
 for f in Apple/UI/Assets.xcassets/AppIcon.appiconset/*.png; do
   size="$(basename "$f" .png)"
   magick design/brand/burrow-owl-icon-master.png -colorspace sRGB -resize "${size}x${size}!" -strip "PNG24:$f"