chore: 优化CI缓存与YAML格式统一

构建流程中Gradle缓存新增build-cache目录，并在assembleRelease时启用--build-cache参数，提升构建效率。统一GitHub Actions YAML文件中分支、标签、条件判断等格式，增强可读性与一致性。

.github/workflows/build.yml

@@ -72,13 +72,14 @@ jobs:
       - name: Setup Android SDK
         uses: android-actions/setup-android@v3
 
-      # 缓存 Gradle 依赖 (可节省 3-5 分钟)
+      # 缓存 Gradle 依赖和构建缓存
       - name: Cache Gradle
         uses: actions/cache@v4
         with:
           path: |
             ~/.gradle/caches
             ~/.gradle/wrapper
+            ~/.gradle/build-cache
           key: gradle-${{ runner.os }}-${{ hashFiles('android/**/*.gradle*', 'android/**/gradle-wrapper.properties') }}
           restore-keys: |
             gradle-${{ runner.os }}-
@@ -118,7 +119,7 @@ jobs:
         working-directory: android
         run: |
           chmod +x ./gradlew
-          ./gradlew assembleRelease --no-daemon
+          ./gradlew assembleRelease --build-cache
 
       - name: Upload APK Artifacts
         uses: actions/upload-artifact@v4