fix: ic launcher splash screen

pubspec.yaml

@@ -66,6 +66,26 @@ dev_dependencies:
   # package. See that file for information about deactivating specific lint
   # rules and activating additional ones.
   flutter_lints: ^5.0.0
+  flutter_launcher_icons: ^0.14.4 # آیکونِ لانچرِ گِرد (adaptive) به‌جای مربعِ تیز
+  flutter_native_splash: ^2.4.6 # اسپلشِ استارتاپِ برند‌دار (به‌جای آیکونِ خام)
+
+# آیکونِ اپ: adaptive (گِرد در لانچر) + آیکونِ لِگاسی.
+flutter_launcher_icons:
+  android: true
+  ios: false
+  image_path: "assets/icon/icon.png"
+  adaptive_icon_background: "#081428"
+  adaptive_icon_foreground: "assets/icon/foreground.png"
+  min_sdk_android: 21
+
+# اسپلشِ استارتاپ: پس‌زمینه‌ی لاجوردیِ تیره + لوگوی وسط (Android 12+ هم پشتیبانی).
+flutter_native_splash:
+  color: "#081428"
+  image: assets/icon/splash.png
+  android_12:
+    color: "#081428"
+    image: assets/icon/splash.png
+    icon_background_color: "#081428"
 
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec