Import sanitized project structure and GitHub docs

DouYinSparkFlow/.github/workflows/schedule.yml

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+name: DouYin Spark Flow Schedule Run
+on:
+  workflow_dispatch: # 允许手动触发
+  schedule: # 定时任务
+    - cron: "0 1 * * *" # 每天 1:00 UTC（对应北京时间 9:00）
+jobs:
+  run-main:
+    timeout-minutes: 20
+    runs-on: ubuntu-latest
+    environment: user-data
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.11'
+    - name: Test Douyin Accessibility
+      run: |
+        curl -I https://creator.douyin.com/
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r requirements.txt
+    - name: Ensure browsers are installed
+      run: playwright install chromium --with-deps --only-shell
+    - name: Run DouYin Spark Flow
+      env:
+        USER_DATA: ${{ secrets.USER_DATA }}
+      run: python main.py --doTask
+    - uses: actions/upload-artifact@v4
+      if: ${{ !cancelled() }}
+      with:
+        name: run-logs
+        path: logs/
+  workflow-keepalive:
+    if: github.event_name == 'schedule'
+    runs-on: ubuntu-latest
+    permissions:
+      actions: write
+    steps:
+      - uses: liskin/gh-workflow-keepalive@v1