Add the Metin2 app icon for Android, macOS and iOS

branding/icon/icon.svg (a cracked Metin stone with glowing runes, inside a studded gold ring, in front of
a blood moon over ink mountains) is the single source; build_icons.sh renders it with headless Chrome and
writes the committed outputs: Android legacy + adaptive mipmaps (wired into the manifest), the macOS
AppIcon.icns and the iOS AppIcon.appiconset. scripts/package_mac_app.sh wraps mt_native_render into a
local Metin2.app using that icon.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

scripts/package_mac_app.sh

@@ -0,0 +1,52 @@
+#!/bin/zsh
+# Wraps a built mt_native_render into a double-clickable Metin2.app with the branding icon:
+#   scripts/package_mac_app.sh [BUILD_DIR=build/release] [CLIENT_DIR=<repo>/Client] [OUT=BUILD_DIR/Metin2.app]
+# The bundle is for this machine: the executable still links Homebrew's SDL3 / Vulkan loader / MoltenVK, and
+# the launcher runs the live client from CLIENT_DIR (an absolute path baked in; MT_CLIENT_DIR overrides it
+# at launch). The shaders and python27.zip go to Contents/Resources, which SDL_GetBasePath returns in a bundle.
+set -euo pipefail
+repo=${0:A:h:h}
+build=${1:-$repo/build/release}
+client=${2:-$repo/Client}
+out=${3:-$build/Metin2.app}
+bin=$build/src/host/mt_native_render
+[[ -x $bin ]] || { echo "missing $bin (build the mt_native_render target first)" >&2; exit 1; }
+client=${client:A}
+version=$(git -C $repo describe --always --dirty 2>/dev/null || echo dev)
+
+rm -rf $out
+mkdir -p $out/Contents/MacOS $out/Contents/Resources
+cp $bin $out/Contents/MacOS/
+cp $build/src/host/native.vert.spv $build/src/host/native.frag.spv $build/src/host/python27.zip $out/Contents/Resources/
+cp $repo/branding/icon/macos/AppIcon.icns $out/Contents/Resources/
+
+cat > $out/Contents/MacOS/Metin2 <<EOF
+#!/bin/sh
+# Finder starts apps with / as the working directory; the client reads its packs relative to its directory.
+cd "\${MT_CLIENT_DIR:-$client}" || exit 1
+exec "\$(dirname "\$0")/mt_native_render" --live-client . "\$@"
+EOF
+chmod +x $out/Contents/MacOS/Metin2
+
+cat > $out/Contents/Info.plist <<EOF
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleName</key><string>Metin2</string>
+	<key>CFBundleDisplayName</key><string>Metin2</string>
+	<key>CFBundleIdentifier</key><string>org.metin2port.client</string>
+	<key>CFBundleExecutable</key><string>Metin2</string>
+	<key>CFBundleIconFile</key><string>AppIcon</string>
+	<key>CFBundlePackageType</key><string>APPL</string>
+	<key>CFBundleShortVersionString</key><string>0.1</string>
+	<key>CFBundleVersion</key><string>$version</string>
+	<key>LSMinimumSystemVersion</key><string>12.0</string>
+	<key>LSApplicationCategoryType</key><string>public.app-category.role-playing-games</string>
+	<key>NSHighResolutionCapable</key><true/>
+</dict>
+</plist>
+EOF
+# Ad-hoc signature so Gatekeeper on Apple silicon runs the copied binary.
+codesign --force --deep --sign - $out >/dev/null 2>&1 || true
+echo $out