fix(ci): 修复ci-cd.yml的YAML语法错误，将Python覆盖率汇总和失败通知抽到独立脚本

scripts/ci_coverage_summary.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+"""解析 coverage.xml 并输出覆盖率汇总。"""
+import sys
+import xml.etree.ElementTree as ET
+
+THRESHOLD = 65  # 行覆盖率门槛，百分比
+
+
+def main() -> int:
+    try:
+        tree = ET.parse("coverage.xml")
+    except FileNotFoundError:
+        print("coverage.xml 不存在，跳过汇总")
+        return 0
+
+    root = tree.getroot()
+    line_rate = float(root.get("line-rate", 0)) * 100
+    branch_rate = float(root.get("branch-rate", 0)) * 100
+    lines_covered = int(root.get("lines-covered", 0))
+    lines_valid = int(root.get("lines-valid", 0))
+
+    print(f"行覆盖率: {line_rate:.2f}% ({lines_covered}/{lines_valid})")
+    print(f"分支覆盖率: {branch_rate:.2f}%")
+    print(f"门槛: {THRESHOLD}%")
+    status = "PASS ✅" if line_rate >= THRESHOLD else "FAIL ❌"
+    print(f"状态: {status}")
+
+    return 0 if line_rate >= THRESHOLD else 1
+
+
+if __name__ == "__main__":
+    sys.exit(main())