Replace app icon with custom checkmark design

- Add purple checkmark icon matching login screen style
- Generate Android adaptive icons with proper foreground/background
- Update iOS app icons
- Include icon generator tool for future updates

android/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+  <background android:drawable="@color/ic_launcher_background"/>
+  <foreground>
+      <inset
+          android:drawable="@drawable/ic_launcher_foreground"
+          android:inset="16%" />
+  </foreground>
+</adaptive-icon>

android/app/src/main/res/values/colors.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="ic_launcher_background">#6750A4</color>
+</resources>

ios/Runner.xcodeproj/project.pbxproj

@@ -427,7 +427,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
-				ASSETCATALOG_COMPILER_GENERATE_SWIFT_ASSET_SYMBOL_EXTENSIONS = YES;
+				ASSETCATALOG_COMPILER_GENERATE_SWIFT_ASSET_SYMBOL_EXTENSIONS = AppIcon;
 				CLANG_ANALYZER_NONNULL = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";
@@ -484,7 +484,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
-				ASSETCATALOG_COMPILER_GENERATE_SWIFT_ASSET_SYMBOL_EXTENSIONS = YES;
+				ASSETCATALOG_COMPILER_GENERATE_SWIFT_ASSET_SYMBOL_EXTENSIONS = AppIcon;
 				CLANG_ANALYZER_NONNULL = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";

ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -1,122 +1 @@
-{
-  "images" : [
-    {
-      "size" : "20x20",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-20x20@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "20x20",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-20x20@3x.png",
-      "scale" : "3x"
-    },
-    {
-      "size" : "29x29",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-29x29@1x.png",
-      "scale" : "1x"
-    },
-    {
-      "size" : "29x29",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-29x29@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "29x29",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-29x29@3x.png",
-      "scale" : "3x"
-    },
-    {
-      "size" : "40x40",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-40x40@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "40x40",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-40x40@3x.png",
-      "scale" : "3x"
-    },
-    {
-      "size" : "60x60",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-60x60@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "60x60",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-60x60@3x.png",
-      "scale" : "3x"
-    },
-    {
-      "size" : "20x20",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-20x20@1x.png",
-      "scale" : "1x"
-    },
-    {
-      "size" : "20x20",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-20x20@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "29x29",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-29x29@1x.png",
-      "scale" : "1x"
-    },
-    {
-      "size" : "29x29",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-29x29@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "40x40",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-40x40@1x.png",
-      "scale" : "1x"
-    },
-    {
-      "size" : "40x40",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-40x40@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "76x76",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-76x76@1x.png",
-      "scale" : "1x"
-    },
-    {
-      "size" : "76x76",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-76x76@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "83.5x83.5",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-83.5x83.5@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "1024x1024",
-      "idiom" : "ios-marketing",
-      "filename" : "Icon-App-1024x1024@1x.png",
-      "scale" : "1x"
-    }
-  ],
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}
+{"images":[{"size":"20x20","idiom":"iphone","filename":"Icon-App-20x20@2x.png","scale":"2x"},{"size":"20x20","idiom":"iphone","filename":"Icon-App-20x20@3x.png","scale":"3x"},{"size":"29x29","idiom":"iphone","filename":"Icon-App-29x29@1x.png","scale":"1x"},{"size":"29x29","idiom":"iphone","filename":"Icon-App-29x29@2x.png","scale":"2x"},{"size":"29x29","idiom":"iphone","filename":"Icon-App-29x29@3x.png","scale":"3x"},{"size":"40x40","idiom":"iphone","filename":"Icon-App-40x40@2x.png","scale":"2x"},{"size":"40x40","idiom":"iphone","filename":"Icon-App-40x40@3x.png","scale":"3x"},{"size":"57x57","idiom":"iphone","filename":"Icon-App-57x57@1x.png","scale":"1x"},{"size":"57x57","idiom":"iphone","filename":"Icon-App-57x57@2x.png","scale":"2x"},{"size":"60x60","idiom":"iphone","filename":"Icon-App-60x60@2x.png","scale":"2x"},{"size":"60x60","idiom":"iphone","filename":"Icon-App-60x60@3x.png","scale":"3x"},{"size":"20x20","idiom":"ipad","filename":"Icon-App-20x20@1x.png","scale":"1x"},{"size":"20x20","idiom":"ipad","filename":"Icon-App-20x20@2x.png","scale":"2x"},{"size":"29x29","idiom":"ipad","filename":"Icon-App-29x29@1x.png","scale":"1x"},{"size":"29x29","idiom":"ipad","filename":"Icon-App-29x29@2x.png","scale":"2x"},{"size":"40x40","idiom":"ipad","filename":"Icon-App-40x40@1x.png","scale":"1x"},{"size":"40x40","idiom":"ipad","filename":"Icon-App-40x40@2x.png","scale":"2x"},{"size":"50x50","idiom":"ipad","filename":"Icon-App-50x50@1x.png","scale":"1x"},{"size":"50x50","idiom":"ipad","filename":"Icon-App-50x50@2x.png","scale":"2x"},{"size":"72x72","idiom":"ipad","filename":"Icon-App-72x72@1x.png","scale":"1x"},{"size":"72x72","idiom":"ipad","filename":"Icon-App-72x72@2x.png","scale":"2x"},{"size":"76x76","idiom":"ipad","filename":"Icon-App-76x76@1x.png","scale":"1x"},{"size":"76x76","idiom":"ipad","filename":"Icon-App-76x76@2x.png","scale":"2x"},{"size":"83.5x83.5","idiom":"ipad","filename":"Icon-App-83.5x83.5@2x.png","scale":"2x"},{"size":"1024x1024","idiom":"ios-marketing","filename":"Icon-App-1024x1024@1x.png","scale":"1x"}],"info":{"version":1,"author":"xcode"}}

tool/generate_icon.dart

@@ -0,0 +1,118 @@
+import 'dart:io';
+import 'dart:math';
+import 'package:image/image.dart' as img;
+
+/// Generates app icon PNG files for Agenda Tasks
+/// Run with: cd tool && dart pub get && dart run generate_icon.dart
+void main() async {
+  print('Generating app icons...');
+
+  // Generate main icon (1024x1024)
+  final mainIcon = generateIcon(1024, withBackground: true);
+  final mainPng = img.encodePng(mainIcon);
+  await File('../assets/icon/app_icon.png').writeAsBytes(mainPng);
+  print('Created: assets/icon/app_icon.png (${mainPng.length} bytes)');
+
+  // Generate adaptive icon foreground (1024x1024)
+  final foregroundIcon = generateIcon(1024, withBackground: false);
+  final fgPng = img.encodePng(foregroundIcon);
+  await File('../assets/icon/app_icon_foreground.png').writeAsBytes(fgPng);
+  print('Created: assets/icon/app_icon_foreground.png (${fgPng.length} bytes)');
+
+  print('Done! Now run from project root: flutter pub run flutter_launcher_icons');
+}
+
+/// Generate an icon with a checkmark design
+img.Image generateIcon(int size, {required bool withBackground}) {
+  final image = img.Image(width: size, height: size);
+
+  final center = size / 2;
+  final radius = size * 0.42;
+
+  // Colors - Material Purple
+  final purple = img.ColorRgba8(103, 80, 164, 255); // #6750A4
+  final white = img.ColorRgba8(255, 255, 255, 255);
+  final transparent = img.ColorRgba8(0, 0, 0, 0);
+
+  // Checkmark stroke width
+  final checkStroke = size * 0.09;
+
+  // Checkmark points - classic check shape
+  // Point 1: Start of short leg (left side)
+  final p1x = center - radius * 0.40;
+  final p1y = center + radius * 0.05;
+
+  // Point 2: Corner/bottom of check
+  final p2x = center - radius * 0.05;
+  final p2y = center + radius * 0.40;
+
+  // Point 3: End of long leg (top right)
+  final p3x = center + radius * 0.50;
+  final p3y = center - radius * 0.35;
+
+  // Fill image
+  for (int y = 0; y < size; y++) {
+    for (int x = 0; x < size; x++) {
+      final dx = x - center;
+      final dy = y - center;
+      final distance = sqrt(dx * dx + dy * dy);
+
+      img.Color pixelColor = transparent;
+
+      if (withBackground) {
+        // Draw filled purple circle
+        if (distance <= radius) {
+          pixelColor = purple;
+        }
+
+        // Draw white checkmark on top
+        final dist1 = distanceToSegment(x.toDouble(), y.toDouble(), p1x, p1y, p2x, p2y);
+        final dist2 = distanceToSegment(x.toDouble(), y.toDouble(), p2x, p2y, p3x, p3y);
+
+        if (dist1 <= checkStroke || dist2 <= checkStroke) {
+          pixelColor = white;
+        }
+      } else {
+        // Foreground only - purple circle outline and checkmark
+        final ringOuter = radius;
+        final ringInner = radius * 0.88;
+
+        // Circle outline
+        if (distance <= ringOuter && distance >= ringInner) {
+          pixelColor = purple;
+        }
+
+        // Purple checkmark
+        final dist1 = distanceToSegment(x.toDouble(), y.toDouble(), p1x, p1y, p2x, p2y);
+        final dist2 = distanceToSegment(x.toDouble(), y.toDouble(), p2x, p2y, p3x, p3y);
+
+        if (dist1 <= checkStroke || dist2 <= checkStroke) {
+          pixelColor = purple;
+        }
+      }
+
+      image.setPixel(x, y, pixelColor);
+    }
+  }
+
+  return image;
+}
+
+/// Calculate distance from point (px, py) to line segment (x1,y1)-(x2,y2)
+double distanceToSegment(double px, double py, double x1, double y1, double x2, double y2) {
+  final dx = x2 - x1;
+  final dy = y2 - y1;
+  final lengthSq = dx * dx + dy * dy;
+
+  if (lengthSq == 0) {
+    return sqrt((px - x1) * (px - x1) + (py - y1) * (py - y1));
+  }
+
+  var t = ((px - x1) * dx + (py - y1) * dy) / lengthSq;
+  t = t.clamp(0.0, 1.0);
+
+  final nearestX = x1 + t * dx;
+  final nearestY = y1 + t * dy;
+
+  return sqrt((px - nearestX) * (px - nearestX) + (py - nearestY) * (py - nearestY));
+}

tool/pubspec.lock

@@ -0,0 +1,93 @@
+# Generated by pub
+# See https://dart.dev/tools/pub/glossary#lockfile
+packages:
+  archive:
+    dependency: transitive
+    description:
+      name: archive
+      sha256: "2fde1607386ab523f7a36bb3e7edb43bd58e6edaf2ffb29d8a6d578b297fdbbd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.7"
+  collection:
+    dependency: transitive
+    description:
+      name: collection
+      sha256: "2f5709ae4d3d59dd8f7cd309b4e023046b57d8a6c82130785d2b0e5868084e76"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.19.1"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      sha256: c8ea0233063ba03258fbcf2ca4d6dadfefe14f02fab57702265467a19f27fadf
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.7"
+  ffi:
+    dependency: transitive
+    description:
+      name: ffi
+      sha256: d07d37192dbf97461359c1518788f203b0c9102cfd2c35a716b823741219542c
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.5"
+  image:
+    dependency: "direct main"
+    description:
+      name: image
+      sha256: "492bd52f6c4fbb6ee41f781ff27765ce5f627910e1e0cbecfa3d9add5562604c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.7.2"
+  meta:
+    dependency: transitive
+    description:
+      name: meta
+      sha256: "9f29b9bcc8ee287b1a31e0d01be0eae99a930dbffdaecf04b3f3d82a969f296f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.18.1"
+  path:
+    dependency: transitive
+    description:
+      name: path
+      sha256: "75cca69d1490965be98c73ceaea117e8a04dd21217b37b292c9ddbec0d955bc5"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.9.1"
+  petitparser:
+    dependency: transitive
+    description:
+      name: petitparser
+      sha256: "1a97266a94f7350d30ae522c0af07890c70b8e62c71e8e3920d1db4d23c057d1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.0.1"
+  posix:
+    dependency: transitive
+    description:
+      name: posix
+      sha256: "6323a5b0fa688b6a010df4905a56b00181479e6d10534cecfecede2aa55add61"
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.0.3"
+  typed_data:
+    dependency: transitive
+    description:
+      name: typed_data
+      sha256: f9049c039ebfeb4cf7a7104a675823cd72dba8297f264b6637062516699fa006
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.0"
+  xml:
+    dependency: transitive
+    description:
+      name: xml
+      sha256: "971043b3a0d3da28727e40ed3e0b5d18b742fa5a68665cca88e74b7876d5e025"
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.6.1"
+sdks:
+  dart: ">=3.8.0 <4.0.0"

tool/pubspec.yaml

@@ -0,0 +1,8 @@
+name: icon_generator
+description: Generate app icons for Agenda Tasks
+
+environment:
+  sdk: ^3.0.0
+
+dependencies:
+  image: ^4.3.0