diff --git a/.github/actions/setup_flutter/action.yml b/.github/actions/setup_flutter/action.yml
deleted file mode 100644
index b432dbc2..00000000
--- a/.github/actions/setup_flutter/action.yml
+++ /dev/null
@@ -1,20 +0,0 @@
-name: Setup Flutter
-description: "Setup Flutter"
-outputs:
-  flutter-path:
-    description: "Flutter SDK path"
-    value: ${{ steps.install-flutter.outputs.CACHE-PATH }}
-runs:
-  using: "composite"
-  steps:
-    - name: Parse Flutter version
-      id: fvm-config
-      uses: kuhnroyal/flutter-fvm-config-action@v2
-
-    - name: Install Flutter
-      id: install-flutter
-      uses: subosito/flutter-action@v2
-      with:
-        flutter-version: ${{ steps.fvm-config.outputs.FLUTTER_VERSION }}
-        channel: ${{ steps.fvm-config.outputs.FLUTTER_CHANNEL }}
-        cache: true
diff --git a/.github/workflows/deploy-ios-production-app.yaml b/.github/workflows/deploy-ios-production-app.yaml
index eb4512df..a46c1430 100644
--- a/.github/workflows/deploy-ios-production-app.yaml
+++ b/.github/workflows/deploy-ios-production-app.yaml
@@ -22,8 +22,8 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Setup Flutter
-        uses: ./.github/actions/setup_flutter
+      - name: Setup Flutter with FVM
+        uses: kuhnroyal/flutter-fvm-config-action/setup@v3
 
       - name: Deploy iOS app
         uses: ./.github/actions/deploy_ios_app
diff --git a/.github/workflows/deploy-ios-staging-app.yaml b/.github/workflows/deploy-ios-staging-app.yaml
index 0eb97b3c..3f131d62 100644
--- a/.github/workflows/deploy-ios-staging-app.yaml
+++ b/.github/workflows/deploy-ios-staging-app.yaml
@@ -22,8 +22,8 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Setup Flutter
-        uses: ./.github/actions/setup_flutter
+      - name: Setup Flutter with FVM
+        uses: kuhnroyal/flutter-fvm-config-action/setup@v3
 
       - name: Deploy iOS app
         uses: ./.github/actions/deploy_ios_app
diff --git a/.github/workflows/flutter-app-code-check.yml b/.github/workflows/flutter-app-code-check.yml
index 0d8b8f3c..e53518b2 100644
--- a/.github/workflows/flutter-app-code-check.yml
+++ b/.github/workflows/flutter-app-code-check.yml
@@ -49,12 +49,12 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Setup Flutter
+      - name: Setup Flutter with FVM
         id: setup-flutter
-        uses: ./.github/actions/setup_flutter
+        uses: kuhnroyal/flutter-fvm-config-action/setup@v3
 
       - name: Prepare Melos
-        run: echo "MELOS_SDK_PATH=${{ steps.setup-flutter.outputs.flutter-path }}" >> "$GITHUB_ENV"
+        run: echo "MELOS_SDK_PATH=${{ steps.setup-flutter.outputs.CACHE-PATH }}" >> "$GITHUB_ENV"
 
       - name: Install Melos
         uses: bluefireteam/melos-action@v3
@@ -78,9 +78,9 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Setup Flutter
+      - name: Setup Flutter with FVM
         id: setup-flutter
-        uses: ./.github/actions/setup_flutter
+        uses: kuhnroyal/flutter-fvm-config-action/setup@v3
 
       - name: Prepare Melos
         run: echo "MELOS_SDK_PATH=${{ steps.setup-flutter.outputs.flutter-path }}" >> "$GITHUB_ENV"
diff --git a/.github/workflows/pod-install-for-dependabot.yaml b/.github/workflows/pod-install-for-dependabot.yaml
index 4add32ef..c5422513 100644
--- a/.github/workflows/pod-install-for-dependabot.yaml
+++ b/.github/workflows/pod-install-for-dependabot.yaml
@@ -37,18 +37,9 @@ jobs:
               echo "directory_exists=false" >> "$GITHUB_ENV"
           fi
 
-      - name: Parse Flutter version
+      - name: Setup Flutter with FVM
         if: env.directory_exists == 'true'
-        id: fvm
-        uses: kuhnroyal/flutter-fvm-config-action@v2
-
-      - name: Install Flutter
-        if: env.directory_exists == 'true'
-        uses: subosito/flutter-action@v2
-        with:
-          flutter-version: ${{ steps.fvm.outputs.FLUTTER_VERSION }}
-          channel: ${{ steps.fvm.outputs.FLUTTER_CHANNEL }}
-          cache: true
+        uses: kuhnroyal/flutter-fvm-config-action/setup@v3
 
       - name: Flutter pub get
         if: env.directory_exists == 'true'
diff --git a/.github/workflows/upload-production-android-app.yaml b/.github/workflows/upload-production-android-app.yaml
index 180c3f7f..b10cf296 100644
--- a/.github/workflows/upload-production-android-app.yaml
+++ b/.github/workflows/upload-production-android-app.yaml
@@ -22,8 +22,8 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Setup Flutter
-        uses: ./.github/actions/setup_flutter
+      - name: Setup Flutter with FVM
+        uses: kuhnroyal/flutter-fvm-config-action/setup@v3
 
       - name: Upload android app
         uses: ./.github/actions/upload_android_app
diff --git a/.github/workflows/upload-staging-android-app.yaml b/.github/workflows/upload-staging-android-app.yaml
index 20f24740..c9af153f 100644
--- a/.github/workflows/upload-staging-android-app.yaml
+++ b/.github/workflows/upload-staging-android-app.yaml
@@ -22,8 +22,8 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Setup Flutter
-        uses: ./.github/actions/setup_flutter
+      - name: Setup Flutter with FVM
+        uses: kuhnroyal/flutter-fvm-config-action/setup@v3
 
       - name: Upload android app
         uses: ./.github/actions/upload_android_app
diff --git a/.gitignore b/.gitignore
index 38babadc..ee049a67 100644
--- a/.gitignore
+++ b/.gitignore
@@ -121,6 +121,7 @@ unlinked_spec.ds
 
 # macOS
 **/macos/Flutter/GeneratedPluginRegistrant.swift
+**/macos/Flutter/ephemeral
 
 # Web related
 lib/generated_plugin_registrant.dart
diff --git a/packages/util/analysis_options.yaml b/packages/util/analysis_options.yaml
index 4446f0ed..214808a1 100644
--- a/packages/util/analysis_options.yaml
+++ b/packages/util/analysis_options.yaml
@@ -1 +1,4 @@
 include: package:altive_lints/altive_lints.yaml
+analyzer:
+  plugins:
+    - custom_lint
diff --git a/packages/util/lib/src/json_converter.dart/color_converter.dart b/packages/util/lib/src/json_converter.dart/color_converter.dart
index d871fcc8..319682d2 100644
--- a/packages/util/lib/src/json_converter.dart/color_converter.dart
+++ b/packages/util/lib/src/json_converter.dart/color_converter.dart
@@ -11,6 +11,7 @@ class ColorConverter implements JsonConverter<Color, int> {
   const ColorConverter();
 
   @override
+  // ignore: avoid_hardcoded_color
   Color fromJson(int json) => Color(json);
 
   @override
diff --git a/packages/util/pubspec.yaml b/packages/util/pubspec.yaml
index a0d27211..6011e106 100644
--- a/packages/util/pubspec.yaml
+++ b/packages/util/pubspec.yaml
@@ -16,5 +16,6 @@ dependencies:
 
 dev_dependencies:
   altive_lints: ^1.12.0
+  custom_lint: ^0.6.7
   flutter_test:
     sdk: flutter