Use the official Monero mark for the app icon

apps/ios/Branding/README.md

@@ -1,23 +1,32 @@
 # Branding
 
-`logo.svg` is the source artwork: the Monero monogram in black and white —
-two outer legs, a central V descending onto a full-width base bar, one uniform
-stroke width (118 of 1024) so it stays legible at 60 px.
+The app icon is the **official Monero mark**, monochrome.
 
-iOS cannot use SVG for app icons, so the PNGs in
-`Koins/Assets.xcassets/AppIcon.appiconset` are rendered from the same geometry:
+`logo-official.svg` is `meta/safari-pinned-tab.svg` from
+[monero-project/monero-site](https://github.com/monero-project/monero-site) —
+the Monero Project's own traced, single-colour version of the logo, which is
+exactly what a black-and-white icon needs. `logo-official.png` is that file
+rasterised to 1024×1024:
+
+```sh
+qlmanage -t -s 1024 -o /tmp Branding/logo-official.svg
+```
+
+iOS cannot use SVG for app icons, so `make-icons.swift` produces the PNG the
+asset catalog needs — the mark as published (black badge, white M) inset to 90%
+so the platform's squircle mask does not clip it:
 
 ```sh
 cd apps/ios
 swift Branding/make-icons.swift Koins/Assets.xcassets/AppIcon.appiconset
 ```
 
-That writes the 1024×1024 icon (black ground, white mark, no alpha channel —
-the App Store rejects icons with alpha) plus `Branding/logo-light.png`, the
-inverted variant.
+That writes the opaque 1024×1024 app icon (no alpha channel — the App Store
+rejects icons with alpha) and `Branding/logo-inverted.png`, the same mark
+inverted for dark surfaces (white badge, black M, black ground).
 
 The asset catalog uses the single-size format, so Xcode derives every size the
 device needs from the 1024.
 
-Note: the Monero name and mark are the Monero Project's; check their brand
+Note: the Monero name and mark belong to the Monero Project — check their brand
 guidance before shipping this publicly.