ci: 统一 workflow 写法，使其在 Gitea 与 GitHub 上通用

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

.github/workflows/build.yml

@@ -23,31 +23,25 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 90
     env:
-      GRADLE_USER_HOME: ${{ github.workspace }}/.gradle-ci
       ARTIFACT_GROUP_ID: uk.potatolab
       MAVEN_USER: ${{ secrets.MAVEN_USER }}
       MAVEN_PASSWORD: ${{ secrets.MAVEN_PASSWORD }}
       ORG_GRADLE_PROJECT_tdlmUsername: ${{ secrets.MAVEN_USER }}
       ORG_GRADLE_PROJECT_tdlmPassword: ${{ secrets.MAVEN_PASSWORD }}
     steps:
-      - uses: https://git.potatolab.uk/actions/checkout@fbc6f3992d24b796d5a048ff273f7fcc4a7b6c09
+      - uses: actions/checkout@fbc6f3992d24b796d5a048ff273f7fcc4a7b6c09
         with:
           ref: ${{ inputs.module-ref || github.sha }}
           fetch-depth: 0 # the package version is derived from git history
+          filter: blob:none
 
-      - uses: https://git.potatolab.uk/actions/setup-java@de7274f081f381c8f8158605e0321c36c376e2e6
+      - uses: actions/setup-java@de7274f081f381c8f8158605e0321c36c376e2e6
         with:
           distribution: zulu
           java-version: '25'
           cache-jdk: true
 
-      - uses: https://git.potatolab.uk/actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9
-        with:
-          path: ~/.gradle/jdks
-          key: gradle-toolchains-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('**/*.gradle', '**/gradle.properties', '**/gradle-wrapper.properties') }}
-          restore-keys: gradle-toolchains-${{ runner.os }}-${{ runner.arch }}-
-
-      - uses: https://git.potatolab.uk/actions/gradle-actions/setup-gradle@9c971963bec38e04b3d30dcc455b5382be2fdbfb
+      - uses: gradle/actions/setup-gradle@9c971963bec38e04b3d30dcc455b5382be2fdbfb
         with:
           cache-provider: basic