feat(mining-app): 添加自动版本号增长机制

mining-app 的 versionCode 写死为 1，导致版本升级检测永远无法触发。
参照 mobile-app 实现，添加 Gradle 层自增 + 构建脚本两层机制：
- build.gradle.kts: version.properties 自增 versionCode
- scripts/build.sh: 自动 bump pubspec.yaml buildNumber

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/mining-app/.gitignore

@@ -43,3 +43,9 @@ app.*.map.json
 /android/app/debug
 /android/app/profile
 /android/app/release
+
+# Auto-generated version code (each dev machine maintains its own)
+/android/app/version.properties
+
+# Build publish output
+/publish/

frontend/mining-app/android/app/build.gradle.kts

@@ -1,3 +1,7 @@
+import java.util.Properties
+import java.io.FileInputStream
+import java.io.FileOutputStream
+
 plugins {
     id("com.android.application")
     id("kotlin-android")
@@ -5,6 +9,33 @@ plugins {
     id("dev.flutter.flutter-gradle-plugin")
 }
 
+// ============================================
+// Auto-increment version code on each build
+// ============================================
+val versionPropertiesFile = rootProject.file("app/version.properties")
+val versionProperties = Properties()
+
+fun calculateNextVersionCode(): Int {
+    if (versionPropertiesFile.exists()) {
+        versionProperties.load(FileInputStream(versionPropertiesFile))
+    }
+    val currentCode = versionProperties.getProperty("VERSION_CODE", "0").toInt()
+    val newCode = currentCode + 1
+    versionProperties.setProperty("VERSION_CODE", newCode.toString())
+    versionProperties.store(FileOutputStream(versionPropertiesFile), "Auto-generated version code - DO NOT EDIT MANUALLY")
+    return newCode
+}
+
+// Get auto-incremented version code
+val autoVersionCode = calculateNextVersionCode()
+
+// Version name format: major.minor.patch (from pubspec.yaml) + build number
+// Example: 1.0.0.123
+fun getAutoVersionName(): String {
+    val flutterVersionName = flutter.versionName
+    return "$flutterVersionName.$autoVersionCode"
+}
+
 android {
     namespace = "com.rwadurian.mining_app"
     compileSdk = flutter.compileSdkVersion
@@ -23,8 +54,9 @@ android {
         applicationId = "com.rwadurian.mining_app"
         minSdk = 24
         targetSdk = flutter.targetSdkVersion
-        versionCode = flutter.versionCode
+        // Auto-incremented version code and name
-        versionName = flutter.versionName
+        versionCode = autoVersionCode
+        versionName = getAutoVersionName()
 
         // 多dex支持
         multiDexEnabled = true

frontend/mining-app/scripts/build.sh

@@ -0,0 +1,130 @@
+#!/bin/bash
+# =============================================================================
+# Flutter APK 构建脚本（自动增加构建号）
+# =============================================================================
+# 用法:
+#   ./scripts/build.sh              # 构建 release APK，自动增加构建号
+#   ./scripts/build.sh --no-bump    # 构建但不增加构建号
+#   ./scripts/build.sh --set 100    # 设置指定构建号
+# =============================================================================
+
+set -e
+
+# 颜色
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m'
+
+log_info() { echo -e "${BLUE}[INFO]${NC} $1"; }
+log_success() { echo -e "${GREEN}[OK]${NC} $1"; }
+log_warn() { echo -e "${YELLOW}[WARN]${NC} $1"; }
+
+# 获取脚本目录
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_DIR="$(dirname "$SCRIPT_DIR")"
+PUBSPEC_FILE="$PROJECT_DIR/pubspec.yaml"
+
+# 读取当前版本
+get_current_version() {
+    grep "^version:" "$PUBSPEC_FILE" | sed 's/version: //'
+}
+
+# 解析版本号
+parse_version() {
+    local version="$1"
+    VERSION_NAME=$(echo "$version" | cut -d'+' -f1)
+    BUILD_NUMBER=$(echo "$version" | cut -d'+' -f2)
+}
+
+# 更新版本号
+update_version() {
+    local new_version="$1"
+    if [[ "$OSTYPE" == "darwin"* ]]; then
+        # macOS
+        sed -i '' "s/^version:.*/version: $new_version/" "$PUBSPEC_FILE"
+    else
+        # Linux
+        sed -i "s/^version:.*/version: $new_version/" "$PUBSPEC_FILE"
+    fi
+}
+
+# 主函数
+main() {
+    cd "$PROJECT_DIR"
+
+    # 获取当前版本
+    CURRENT_VERSION=$(get_current_version)
+    parse_version "$CURRENT_VERSION"
+
+    log_info "当前版本: $CURRENT_VERSION"
+    log_info "版本名: $VERSION_NAME, 构建号: $BUILD_NUMBER"
+
+    # 处理参数
+    BUMP_VERSION=true
+    NEW_BUILD_NUMBER=""
+
+    while [[ $# -gt 0 ]]; do
+        case $1 in
+            --no-bump)
+                BUMP_VERSION=false
+                shift
+                ;;
+            --set)
+                NEW_BUILD_NUMBER="$2"
+                shift 2
+                ;;
+            *)
+                shift
+                ;;
+        esac
+    done
+
+    # 更新构建号
+    if [ -n "$NEW_BUILD_NUMBER" ]; then
+        BUILD_NUMBER="$NEW_BUILD_NUMBER"
+        log_info "设置构建号为: $BUILD_NUMBER"
+    elif [ "$BUMP_VERSION" = true ]; then
+        BUILD_NUMBER=$((BUILD_NUMBER + 1))
+        log_info "自动增加构建号为: $BUILD_NUMBER"
+    fi
+
+    NEW_VERSION="${VERSION_NAME}+${BUILD_NUMBER}"
+
+    if [ "$CURRENT_VERSION" != "$NEW_VERSION" ]; then
+        update_version "$NEW_VERSION"
+        log_success "版本更新为: $NEW_VERSION"
+    fi
+
+    # 清理并获取依赖
+    log_info "获取依赖..."
+    flutter pub get
+
+    # 构建 APK
+    log_info "构建 Release APK..."
+    flutter build apk --release
+
+    # 输出结果
+    APK_PATH="$PROJECT_DIR/build/app/outputs/flutter-apk/app-release.apk"
+    if [ -f "$APK_PATH" ]; then
+        APK_SIZE=$(du -h "$APK_PATH" | cut -f1)
+        log_success "构建完成!"
+        echo ""
+        echo "APK 信息:"
+        echo "  版本: $NEW_VERSION"
+        echo "  路径: $APK_PATH"
+        echo "  大小: $APK_SIZE"
+        echo ""
+
+        # 复制到 publish 目录
+        PUBLISH_DIR="$PROJECT_DIR/publish"
+        mkdir -p "$PUBLISH_DIR"
+        cp "$APK_PATH" "$PUBLISH_DIR/mining-app-${VERSION_NAME}-${BUILD_NUMBER}.apk"
+        log_success "已复制到: $PUBLISH_DIR/mining-app-${VERSION_NAME}-${BUILD_NUMBER}.apk"
+    else
+        log_warn "APK 文件未找到"
+        exit 1
+    fi
+}
+
+main "$@"