feat: 实现AI驱动的Web自动化测试框架

主要功能:
- 纯视觉元素定位 + DOM辅助的混合方案
- 解决 mouse.click() 与 Vue 页面交互问题
- 使用 elementFromPoint + JS click/focus 实现可靠点击
- 智能元素定位: 根据描述生成CSS选择器获取精确坐标
- 区域扫描作为后备定位方案
- 完整的测试报告生成 (HTML+JSON)
- 截图记录每个操作步骤

技术改进:
- controller.py: 改进 click_at 使用 JavaScript 交互
- executor.py: 添加 _find_element_by_description 智能定位
- planner.py: 增强 prompt 传入视口尺寸
- main.py: 获取实际视口大小传给 planner

.github/workflows/test.yml

@@ -0,0 +1,43 @@
+name: AI Web Tester CI
+
+on:
+  push:
+    branches: [ main, master ]
+  pull_request:
+    branches: [ main, master ]
+  workflow_dispatch:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Set up Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: '3.10'
+    
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r requirements.txt
+    
+    - name: Install Playwright browsers
+      run: playwright install chromium
+    
+    - name: Run tests
+      env:
+        ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
+        ANTHROPIC_BASE_URL: ${{ secrets.ANTHROPIC_BASE_URL }}
+      run: |
+        python tests/test_cases.py --headless
+    
+    - name: Upload test reports
+      uses: actions/upload-artifact@v4
+      if: always()
+      with:
+        name: test-reports
+        path: reports/
+        retention-days: 30