cleanup: 移除冗余依赖、死代码和构建配置

- core: 移除未使用的 uiTooling/uiToolingPreview debug 依赖
- app: 删除冗余 ndk abiFilters、bundle.language、netty pickFirsts
- app: 修复 packaging.excludes 花括号展开语法
- Platform: 删除死代码 AppPredictiveBackHandler 及未使用 import
- CalendarMonthView: 删除重复 import animateFloatAsState

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

app/build.gradle.kts

@@ -30,9 +30,6 @@ android {
         versionCode = 1
         versionName = appVersionName
 
-        ndk {
-            abiFilters += listOf("arm64-v8a", "armeabi-v7a")
-        }
     }
 
     buildTypes {
@@ -68,22 +65,18 @@ android {
     packaging {
         resources {
             excludes += listOf(
-                "/META-INF/{AL2.0,LGPL2.1}",
+                "/META-INF/AL2.0",
+                "/META-INF/LGPL2.1",
                 "/META-INF/LICENSE*",
                 "/META-INF/NOTICE*",
                 "META-INF/DEPENDENCIES",
                 "**/*.kotlin_metadata",
                 "**/*.kotlin_module",
             )
-            pickFirsts += listOf(
-                "META-INF/INDEX.LIST",
-                "META-INF/io.netty.versions.properties",
-            )
         }
     }
 
     bundle {
-        language { enableSplit = true }
         density { enableSplit = true }
         abi { enableSplit = true }
     }

core/build.gradle.kts

@@ -49,8 +49,6 @@ dependencies {
     implementation(libs.compose.animation)
     implementation(libs.compose.material3)
     implementation(libs.compose.ui)
-    debugImplementation(libs.compose.uiToolingPreview)
-    debugImplementation(libs.compose.uiTooling)
 
     implementation(libs.kotlinx.datetime)
     implementation(libs.tyme4kt)

core/src/main/kotlin/plus/rua/project/Platform.kt

@@ -1,13 +1,8 @@
 package plus.rua.project
 
 import android.os.Build
-import androidx.activity.BackEventCompat
-import androidx.activity.compose.BackHandler
-import androidx.activity.compose.PredictiveBackHandler
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.platform.LocalContext
-import kotlinx.coroutines.CancellationException
-import kotlinx.coroutines.flow.Flow
 
 /**
  * 获取 WebP 动画资源的 URI。
@@ -37,36 +32,3 @@ fun getAppVersion(): String {
         "unknown"
     }
 }
-
-/**
- * 预测性返回手势处理器（Android 13+）。
- *
- * @param enabled 是否启用
- * @param onProgress 手势进度回调（0.0~1.0），跟手过程中持续调用
- * @param onBack 手势完成回调（滑动距离足够，执行返回）
- * @param onCancel 手势取消回调（滑动距离不足，回弹）
- */
-@Composable
-fun AppPredictiveBackHandler(
-    enabled: Boolean = true,
-    onProgress: (Float) -> Unit = {},
-    onBack: () -> Unit,
-    onCancel: () -> Unit = {}
-) {
-    // 官方 PredictiveBackHandler — Flow 模式：collect 完成=返回，CancellationException=取消
-    PredictiveBackHandler(enabled = enabled) { progress: Flow<BackEventCompat> ->
-        try {
-            progress.collect { event ->
-                onProgress(event.progress)
-            }
-            onBack()
-        } catch (e: CancellationException) {
-            onCancel()
-        }
-    }
-
-    // 降级：部分设备（如 OPPO/ColorOS）不通过 OnBackInvokedCallback 分发返回事件
-    BackHandler(enabled = enabled) {
-        onBack()
-    }
-}

core/src/main/kotlin/plus/rua/project/ui/CalendarMonthView.kt

@@ -18,7 +18,6 @@ import androidx.compose.animation.scaleOut
 import androidx.compose.animation.slideInVertically
 import androidx.compose.animation.slideOutVertically
 import androidx.compose.animation.togetherWith
-import androidx.compose.animation.core.animateFloatAsState
 import androidx.compose.ui.graphics.TransformOrigin
 import androidx.compose.foundation.Canvas
 import androidx.compose.foundation.background