fix gradle task path

Author: yuqi20000915

selfagent_java/build_colab.ipynb

@@ -110,8 +110,8 @@
     "os.environ['GRADLE_HOME'] = '/opt/gradle-8.2'\n",
     "os.environ['PATH'] = '/opt/gradle-8.2/bin:' + os.environ['PATH']\n",
     "\n",
-    "# 直接使用 gradle 命令构建\n",
-    "!gradle assembleRelease --no-daemon -Dorg.gradle.java.home=/usr/lib/jvm/java-17-openjdk-amd64\n",
+    "# 使用 :app:assembleRelease 指定子模块任务\n",
+    "!gradle :app:assembleRelease --no-daemon -Dorg.gradle.java.home=/usr/lib/jvm/java-17-openjdk-amd64\n",
     "print(\"✅ APK 构建完成\")"
    ],
    "execution_count": null,