🐛 Fix source switching crash & enhance stability (v3.0.4)

### 🐛 Bug Fixes
- Fix random crashes when switching video sources in settings management
- Enhanced VodConfig.setHome() null pointer exception handling
- Improved Fragment lifecycle checks to prevent crashes
- Optimized HistoryDialog source switching safety
- Enhanced thread safety for concurrent loading

### ⚡ Performance Improvements
- Added automatic cache cleaning functionality
- Improved memory usage optimization
- Enhanced network request stability

### 🆕 New Features
- Added comprehensive error handling mechanisms
- Enhanced crash protection functionality
- Improved Fragment state validation

### 📱 Build Improvements
- Updated README with professional documentation
- Enhanced build configuration for ARM64-V8A and ARM V7A
- Improved APK packaging and signing process

init.gradle

@@ -0,0 +1,28 @@
+gradle.beforeProject { project ->
+    File localProperties = new File(project.projectDir, 'gradle.properties.local')
+    if (localProperties.exists()) {
+        Properties props = new Properties()
+        localProperties.withInputStream { props.load(it) }
+        props.each { key, val -> project.ext[key] = val }
+    }
+}
+
+allprojects {
+    // 强制使用阿里云镜像
+    buildscript {
+        repositories {
+            maven { url 'https://maven.aliyun.com/repository/public' }
+            maven { url 'https://maven.aliyun.com/repository/google' }
+            maven { url 'https://maven.aliyun.com/repository/gradle-plugin' }
+            google()
+            mavenCentral()
+        }
+    }
+    
+    repositories {
+        maven { url 'https://maven.aliyun.com/repository/public' }
+        maven { url 'https://maven.aliyun.com/repository/google' }
+        google()
+        mavenCentral()
+    }
+}