diff --git a/.gitignore b/.gitignore
index 711a00c..b5eaf2f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,8 @@
+# OS / System
 .DS_Store
 ._*
 thumbs.db
+
+# Build & Tooling
+.artifacts/
+.worktrees/
diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..4e708a2
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,18 @@
+# User-specific and local IDE state files
+/workspace.xml
+/shelf/
+/caches/
+/deviceManager.xml
+/deploymentTargetSelector.xml
+/appInsightsSettings.xml
+/planningMode.xml
+/studiobot.xml
+/markdown.xml
+/assetWizardSettings.xml
+/usage.statistics.xml
+/tasks.xml
+
+# IntelliJ module files generated by Gradle
+*.iml
+*.iws
+/modules.xml
diff --git a/.idea/AndroidProjectSystem.xml b/.idea/AndroidProjectSystem.xml
new file mode 100644
index 0000000..a127520
--- /dev/null
+++ b/.idea/AndroidProjectSystem.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="AndroidProjectSystem">
+    <option name="providerId" value="com.android.tools.idea.GradleProjectSystem" />
+  </component>
+</project>
diff --git a/.idea/compiler.xml b/.idea/compiler.xml
new file mode 100644
index 0000000..c85eefb
--- /dev/null
+++ b/.idea/compiler.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="21" />
+  </component>
+</project>
diff --git a/.idea/gradle.xml b/.idea/gradle.xml
new file mode 100644
index 0000000..90aa872
--- /dev/null
+++ b/.idea/gradle.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="CHOOSE_PER_TEST" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$/Android" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$/Android" />
+            <option value="$PROJECT_DIR$/Android/app" />
+          </set>
+        </option>
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..dc87e28
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="NullableNotNullManager">
+    <option name="myDefaultNullable" value="androidx.annotation.Nullable" />
+    <option name="myDefaultNotNull" value="androidx.annotation.NonNull" />
+    <option name="myOrdered" value="true" />
+    <option name="myNullables">
+      <value>
+        <list size="17">
+          <item index="0" class="java.lang.String" itemvalue="androidx.annotation.Nullable" />
+          <item index="1" class="java.lang.String" itemvalue="io.reactivex.annotations.Nullable" />
+          <item index="2" class="java.lang.String" itemvalue="io.reactivex.rxjava3.annotations.Nullable" />
+          <item index="3" class="java.lang.String" itemvalue="android.support.annotation.Nullable" />
+          <item index="4" class="java.lang.String" itemvalue="android.annotation.Nullable" />
+          <item index="5" class="java.lang.String" itemvalue="com.android.annotations.Nullable" />
+          <item index="6" class="java.lang.String" itemvalue="androidx.annotation.RecentlyNullable" />
+          <item index="7" class="java.lang.String" itemvalue="org.jspecify.annotations.Nullable" />
+          <item index="8" class="java.lang.String" itemvalue="org.jetbrains.annotations.Nullable" />
+          <item index="9" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.qual.Nullable" />
+          <item index="10" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.compatqual.NullableDecl" />
+          <item index="11" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.compatqual.NullableType" />
+          <item index="12" class="java.lang.String" itemvalue="org.eclipse.jdt.annotation.Nullable" />
+          <item index="13" class="java.lang.String" itemvalue="edu.umd.cs.findbugs.annotations.Nullable" />
+          <item index="14" class="java.lang.String" itemvalue="jakarta.annotation.Nullable" />
+          <item index="15" class="java.lang.String" itemvalue="javax.annotation.Nullable" />
+          <item index="16" class="java.lang.String" itemvalue="javax.annotation.CheckForNull" />
+        </list>
+      </value>
+    </option>
+    <option name="myNotNulls">
+      <value>
+        <list size="16">
+          <item index="0" class="java.lang.String" itemvalue="androidx.annotation.NonNull" />
+          <item index="1" class="java.lang.String" itemvalue="io.reactivex.annotations.NonNull" />
+          <item index="2" class="java.lang.String" itemvalue="io.reactivex.rxjava3.annotations.NonNull" />
+          <item index="3" class="java.lang.String" itemvalue="android.support.annotation.NonNull" />
+          <item index="4" class="java.lang.String" itemvalue="android.annotation.NonNull" />
+          <item index="5" class="java.lang.String" itemvalue="com.android.annotations.NonNull" />
+          <item index="6" class="java.lang.String" itemvalue="androidx.annotation.RecentlyNonNull" />
+          <item index="7" class="java.lang.String" itemvalue="org.jspecify.annotations.NonNull" />
+          <item index="8" class="java.lang.String" itemvalue="org.jetbrains.annotations.NotNull" />
+          <item index="9" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.qual.NonNull" />
+          <item index="10" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.compatqual.NonNullDecl" />
+          <item index="11" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.compatqual.NonNullType" />
+          <item index="12" class="java.lang.String" itemvalue="org.eclipse.jdt.annotation.NonNull" />
+          <item index="13" class="java.lang.String" itemvalue="edu.umd.cs.findbugs.annotations.NonNull" />
+          <item index="14" class="java.lang.String" itemvalue="jakarta.annotation.Nonnull" />
+          <item index="15" class="java.lang.String" itemvalue="javax.annotation.Nonnull" />
+        </list>
+      </value>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="jbr-21" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
diff --git a/.idea/runConfigurations/app.xml b/.idea/runConfigurations/app.xml
new file mode 100644
index 0000000..b8f4c58
--- /dev/null
+++ b/.idea/runConfigurations/app.xml
@@ -0,0 +1,68 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="app" type="AndroidRunConfigurationType" factoryName="Android App" activateToolWindowBeforeRun="false" focusToolWindowBeforeRun="true">
+    <module name="MonsterCards.app" />
+    <option name="ANDROID_RUN_CONFIGURATION_SCHEMA_VERSION" value="1" />
+    <option name="DEPLOY" value="true" />
+    <option name="DEPLOY_APK_FROM_BUNDLE" value="false" />
+    <option name="DEPLOY_AS_INSTANT" value="false" />
+    <option name="ARTIFACT_NAME" value="" />
+    <option name="PM_INSTALL_OPTIONS" value="" />
+    <option name="ALL_USERS" value="false" />
+    <option name="ALWAYS_INSTALL_WITH_PM" value="false" />
+    <option name="ALLOW_ASSUME_VERIFIED" value="false" />
+    <option name="CLEAR_APP_STORAGE" value="false" />
+    <option name="DYNAMIC_FEATURES_DISABLED_LIST" value="" />
+    <option name="ACTIVITY_EXTRA_FLAGS" value="" />
+    <option name="MODE" value="default_activity" />
+    <option name="RESTORE_ENABLED" value="false" />
+    <option name="RESTORE_FILE" value="" />
+    <option name="RESTORE_FRESH_INSTALL_ONLY" value="false" />
+    <option name="CLEAR_LOGCAT" value="true" />
+    <option name="SHOW_LOGCAT_AUTOMATICALLY" value="true" />
+    <option name="TARGET_SELECTION_MODE" value="DEVICE_AND_SNAPSHOT_COMBO_BOX" />
+    <option name="DEBUGGER_TYPE" value="Auto" />
+    <Auto>
+      <option name="USE_JAVA_AWARE_DEBUGGER" value="false" />
+      <option name="SHOW_STATIC_VARS" value="true" />
+      <option name="WORKING_DIR" value="" />
+      <option name="TARGET_LOGGING_CHANNELS" value="lldb process:gdb-remote packets" />
+      <option name="SHOW_OPTIMIZED_WARNING" value="true" />
+      <option name="ATTACH_ON_WAIT_FOR_DEBUGGER" value="true" />
+    </Auto>
+    <Hybrid>
+      <option name="USE_JAVA_AWARE_DEBUGGER" value="false" />
+      <option name="SHOW_STATIC_VARS" value="true" />
+      <option name="WORKING_DIR" value="" />
+      <option name="TARGET_LOGGING_CHANNELS" value="lldb process:gdb-remote packets" />
+      <option name="SHOW_OPTIMIZED_WARNING" value="true" />
+      <option name="ATTACH_ON_WAIT_FOR_DEBUGGER" value="false" />
+    </Hybrid>
+    <Java>
+      <option name="ATTACH_ON_WAIT_FOR_DEBUGGER" value="false" />
+    </Java>
+    <Native>
+      <option name="USE_JAVA_AWARE_DEBUGGER" value="false" />
+      <option name="SHOW_STATIC_VARS" value="true" />
+      <option name="WORKING_DIR" value="" />
+      <option name="TARGET_LOGGING_CHANNELS" value="lldb process:gdb-remote packets" />
+      <option name="SHOW_OPTIMIZED_WARNING" value="true" />
+      <option name="ATTACH_ON_WAIT_FOR_DEBUGGER" value="false" />
+    </Native>
+    <Profilers>
+      <option name="ADVANCED_PROFILING_ENABLED" value="false" />
+      <option name="STARTUP_PROFILING_ENABLED" value="false" />
+      <option name="STARTUP_CPU_PROFILING_ENABLED" value="false" />
+      <option name="STARTUP_CPU_PROFILING_CONFIGURATION_NAME" value="LeakCanary" />
+      <option name="STARTUP_NATIVE_MEMORY_PROFILING_ENABLED" value="false" />
+      <option name="NATIVE_MEMORY_SAMPLE_RATE_BYTES" value="2048" />
+    </Profilers>
+    <option name="DEEP_LINK" value="" />
+    <option name="ACTIVITY" value="" />
+    <option name="ACTIVITY_CLASS" value="" />
+    <option name="SEARCH_ACTIVITY_IN_GLOBAL_SCOPE" value="false" />
+    <option name="SKIP_ACTIVITY_VALIDATION" value="false" />
+    <method v="2">
+      <option name="Android.Gradle.BeforeRunTask" enabled="true" />
+    </method>
+  </configuration>
+</component>
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/Android/.gitignore b/Android/.gitignore
index 331c81c..cbe2549 100644
--- a/Android/.gitignore
+++ b/Android/.gitignore
@@ -1,20 +1,15 @@
-.artifacts
-.gradle
-.idea/appInsightsSettings.xml
-.idea/caches
-.idea/compiler.xml
-.idea/deploymentTargetSelector.xml
-.idea/deviceManager.xml
-.idea/gradle.xml
-.idea/markdown.xml
-.idea/migrations.xml
-.idea/planningMode.xml
-.idea/studiobot.xml
-.idea/workspace.xml
-.DS_Store
-.externalNativeBuild
-.cxx
-*.iml
-build
-captures
+# Build outputs
+build/
+app/build/
+.externalNativeBuild/
+.cxx/
+captures/
 local.properties
+*.iml
+
+# Android / Gradle caches
+.gradle/
+.artifacts/
+
+# System
+.DS_Store
diff --git a/Android/.idea/.gitignore b/Android/.idea/.gitignore
index 26d3352..4e708a2 100644
--- a/Android/.idea/.gitignore
+++ b/Android/.idea/.gitignore
@@ -1,3 +1,18 @@
-# Default ignored files
-/shelf/
+# User-specific and local IDE state files
 /workspace.xml
+/shelf/
+/caches/
+/deviceManager.xml
+/deploymentTargetSelector.xml
+/appInsightsSettings.xml
+/planningMode.xml
+/studiobot.xml
+/markdown.xml
+/assetWizardSettings.xml
+/usage.statistics.xml
+/tasks.xml
+
+# IntelliJ module files generated by Gradle
+*.iml
+*.iws
+/modules.xml
diff --git a/Android/.idea/compiler.xml b/Android/.idea/compiler.xml
new file mode 100644
index 0000000..b86273d
--- /dev/null
+++ b/Android/.idea/compiler.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="21" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/Android/.idea/gradle.xml b/Android/.idea/gradle.xml
new file mode 100644
index 0000000..02c4aa5
--- /dev/null
+++ b/Android/.idea/gradle.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="CHOOSE_PER_TEST" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/Android/.idea/migrations.xml b/Android/.idea/migrations.xml
new file mode 100644
index 0000000..f8051a6
--- /dev/null
+++ b/Android/.idea/migrations.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectMigrations">
+    <option name="MigrateToGradleLocalJavaHome">
+      <set>
+        <option value="$PROJECT_DIR$" />
+      </set>
+    </option>
+  </component>
+</project>
\ No newline at end of file