feat(android): 添加rebuild选项强制重新编译Go代码

问题：
- build-apk.bat 只在 tsslib.aar 不存在时才编译Go代码
- clean 选项只清理Gradle构建文件，不删除tsslib.aar
- 导致Go代码修改后无法被编译进APK

解决方案：
- 添加 rebuild 选项到 build-apk.bat 和 build-install-debug.bat
- rebuild 会删除 tsslib.aar 并强制重新编译Go代码

使用方法：
- build-apk.bat rebuild          # 重新编译Go并构建APK
- build-install-debug.bat rebuild # 重新编译Go并安装调试APK

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

backend/mpc-system/services/service-party-android/build-apk.bat

@@ -183,8 +183,22 @@ set BUILD_TYPE=all
 if "%1"=="debug" set BUILD_TYPE=debug
 if "%1"=="release" set BUILD_TYPE=release
 if "%1"=="clean" set BUILD_TYPE=clean
+if "%1"=="rebuild" set BUILD_TYPE=rebuild
 if "%1"=="help" goto :show_help
 
+:: Handle rebuild - delete tsslib.aar to force recompilation of Go code
+if "%BUILD_TYPE%"=="rebuild" (
+    echo [INFO] Rebuild requested - deleting tsslib.aar to recompile Go code...
+    if exist "app\libs\tsslib.aar" (
+        del /f "app\libs\tsslib.aar"
+        echo [INFO] tsslib.aar deleted, will be rebuilt
+    ) else (
+        echo [INFO] tsslib.aar not found, will be built fresh
+    )
+    set BUILD_TYPE=all
+    echo.
+)
+
 :: Show build type
 echo Build type: %BUILD_TYPE%
 echo.
@@ -275,14 +289,16 @@ echo Options:
 echo   debug    - Build debug APK only
 echo   release  - Build release APK only
 echo   all      - Build both debug and release APKs (default)
-echo   clean    - Clean build files
+echo   clean    - Clean Gradle build files
+echo   rebuild  - Delete tsslib.aar and rebuild everything (use after Go code changes)
 echo   help     - Show this help message
 echo.
 echo Examples:
 echo   build-apk.bat           - Build both APKs
 echo   build-apk.bat debug     - Build debug APK only
 echo   build-apk.bat release   - Build release APK only
-echo   build-apk.bat clean     - Clean project
+echo   build-apk.bat clean     - Clean Gradle project
+echo   build-apk.bat rebuild   - Recompile Go code and build APKs
 echo.
 
 :end

backend/mpc-system/services/service-party-android/build-install-debug.bat

@@ -7,6 +7,62 @@ echo   Build - Install - Launch - Debug
 echo ========================================
 echo.
 
+:: Check for rebuild flag
+if "%1"=="rebuild" (
+    echo [0/5] Rebuild requested - deleting tsslib.aar to recompile Go code...
+    if exist "app\libs\tsslib.aar" (
+        del /f "app\libs\tsslib.aar"
+        echo [INFO] tsslib.aar deleted, will be rebuilt
+    ) else (
+        echo [INFO] tsslib.aar not found, will be built fresh
+    )
+    echo.
+
+    :: Build tsslib.aar
+    echo [0/5] Building tsslib.aar...
+
+    :: Get GOPATH for bin directory
+    for /f "tokens=*" %%G in ('go env GOPATH') do set "GOPATH_DIR=%%G"
+    if not defined GOPATH_DIR set "GOPATH_DIR=%USERPROFILE%\go"
+    set "GOBIN_DIR=!GOPATH_DIR!\bin"
+
+    :: Add GOPATH/bin to PATH if not already there
+    echo !PATH! | findstr /i /c:"!GOBIN_DIR!" >nul 2>nul
+    if !errorlevel! neq 0 (
+        set "PATH=!PATH!;!GOBIN_DIR!"
+    )
+
+    pushd tsslib
+    "!GOBIN_DIR!\gomobile.exe" bind -target=android -androidapi 21 -o "..\app\libs\tsslib.aar" .
+    if !errorlevel! neq 0 (
+        echo [ERROR] gomobile bind failed!
+        popd
+        pause
+        exit /b 1
+    )
+    popd
+
+    echo [SUCCESS] tsslib.aar rebuilt!
+    for %%F in ("app\libs\tsslib.aar") do echo   Size: %%~zF bytes
+    echo.
+)
+
+:: Show help
+if "%1"=="help" (
+    echo Usage: build-install-debug.bat [option]
+    echo.
+    echo Options:
+    echo   rebuild  - Delete and rebuild tsslib.aar before building APK
+    echo   help     - Show this help message
+    echo.
+    echo Examples:
+    echo   build-install-debug.bat          - Build and install debug APK
+    echo   build-install-debug.bat rebuild  - Rebuild Go code, then build and install
+    echo.
+    pause
+    exit /b 0
+)
+
 :: Step 1: Build Debug APK
 echo [1/5] Building Debug APK...
 call gradlew.bat assembleDebug --no-daemon