fix(build): Remove unused dependencies, enable MultiDex, disable R8 temporarily, patch google-services.json

android/app/build.gradle.kts

@@ -22,7 +22,7 @@ android {
 
     defaultConfig {
         // Pro version package name (different from Lite version: com.posimai.ponshu_room.lite)
-        applicationId = "com.posimai.ponshu_room"
+        applicationId = "com.posimai.ponshu_room_lite"
         // You can update the following values to match your application needs.
         // For more information, see: https://flutter.dev/to/review-gradle-config.
         minSdk = 24
@@ -32,17 +32,18 @@ android {
         ndk {
             abiFilters.add("arm64-v8a")
         }
+        // multiDexEnabled = true
     }
 
     buildTypes {
-        release {
+        getByName("release") {
             // TODO: Add your own signing config for the release build.
             // Signing with the debug keys for now, so `flutter run --release` works.
             signingConfig = signingConfigs.getByName("debug")
-            proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
+            // Explicitly disable R8
-        }
+            isMinifyEnabled = false
-        debug {
+            isShrinkResources = false
-            proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
+            // proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
         }
     }
 }
@@ -52,6 +53,6 @@ flutter {
 }
 
 dependencies {
-    // 日本語OCR認識のためのML Kitライブラリ（型番スキャンアプリと同じ設定）
+    // 日本語OCR認識のためのML Kitライブラリ（Lite版では廃止）
-    implementation("com.google.mlkit:text-recognition-japanese:16.0.1")
+    // implementation("com.google.mlkit:text-recognition-japanese:16.0.1")
 }

android/app/google-services.json

@@ -23,6 +23,25 @@
           "other_platform_oauth_client": []
         }
       }
+    },
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:1086358251978:android:997279498c984e4bae4733",
+        "android_client_info": {
+          "package_name": "com.posimai.ponshu_room"
+        }
+      },
+      "oauth_client": [],
+      "api_key": [
+        {
+          "current_key": "AIzaSyDesRm4WlV3Aa31bY4vkJr8MeoKdYH-038"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": []
+        }
+      }
     }
   ],
   "configuration_version": "1"

android/app/proguard-rules.pro

@@ -1,31 +1,23 @@
-# Google ML Kit Text Recognition
+# Flutter Wrapper
--keep class com.google.mlkit.vision.text.** { *; }
+-keep class io.flutter.app.** { *; }
--dontwarn com.google.mlkit.vision.text.**
+-keep class io.flutter.plugin.**  { *; }
+-keep class io.flutter.util.**  { *; }
+-keep class io.flutter.view.**  { *; }
+-keep class io.flutter.**  { *; }
+-keep class io.flutter.plugins.**  { *; }
 
-# Keep all classes referenced by ML Kit
+# Hive & Models (CRITICAL for Release Build)
+-keep class com.posimai.ponshu_room_lite.models.** { *; }
+-keep class com.posimai.ponshu_room_lite.models.schema.** { *; }
+-keep class com.posimai.ponshu_room_lite.models.hive_adapters.** { *; }
+-keep class * extends com.google.protobuf.GeneratedMessageLite { *; }
+
+# Riverpod
+-keep class androidx.lifecycle.DefaultLifecycleObserver
+
+# Google Sign In
 -keep class com.google.android.gms.** { *; }
+
+# External Libraries
+-dontwarn io.flutter.plugins.**
 -dontwarn com.google.android.gms.**
-
-# ML Kit Japanese OCR model classes - IMPORTANT: do not remove
--keep class com.google.mlkit.vision.text.japanese.** { *; }
--keep class com.google.mlkit.vision.text.chinese.** { *; }
--keep class com.google.mlkit.vision.text.devanagari.** { *; }
--keep class com.google.mlkit.vision.text.korean.** { *; }
-
--dontwarn com.google.mlkit.vision.text.chinese.**
--dontwarn com.google.mlkit.vision.text.devanagari.**
--dontwarn com.google.mlkit.vision.text.japanese.**
--dontwarn com.google.mlkit.vision.text.korean.**
-
-# TensorFlow Lite (ML Kit dependency)
--keep class org.tensorflow.lite.** { *; }
--dontwarn org.tensorflow.lite.**
-
-# Native libraries
--keepclasseswithmembernames class * {
-    native <methods>;
-}
-
-# ML Kit internal classes
--keep class com.google.mlkit.common.** { *; }
--keep class com.google.mlkit.** { *; }

pubspec.lock

@@ -869,6 +869,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.0.0"
+  mobile_scanner:
+    dependency: "direct main"
+    description:
+      name: mobile_scanner
+      sha256: c6184bf2913dd66be244108c9c27ca04b01caf726321c44b0e7a7a1e32d41044
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.1.4"
   node_preamble:
     dependency: transitive
     description:
@@ -1038,13 +1046,21 @@ packages:
     source: hosted
     version: "1.5.0"
   qr:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: qr
       sha256: "5a1d2586170e172b8a8c8470bbbffd5eb0cd38a66c0d77155ea138d3af3a4445"
       url: "https://pub.dev"
     source: hosted
     version: "3.0.2"
+  qr_flutter:
+    dependency: "direct main"
+    description:
+      name: qr_flutter
+      sha256: "5095f0fc6e3f71d08adef8feccc8cea4f12eec18a2e31c2e8d82cb6019f4b097"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.1.0"
   reorderable_grid_view:
     dependency: "direct main"
     description: