feat: 工资查询助手首版 v1.0.105

基于 skill-template 脚手架开发，包含：
- payroll_config（费率配置，可编辑）+ payslip_snapshots（解析历史，只读）2 张业务表
- 全国默认 + 北上广 4 套费率（社保/公积金/个税起征点/7 级税率表）
- 5 个业务 Action：calculate-payslip-simple / calculate-payslip-full / explain-term / view-config / edit-config
- 个税累计预扣法计算，支持多月历史累加
- 20 个薪资名词库（社保/公积金/个税/全勤/加班费等）
- 完整市场文档（README/TUTORIAL/DEMO/CHANGELOG）
- 296 测试全部通过

tests/test_entrypoint_subprocess.py

@@ -0,0 +1,68 @@
+# -*- coding: utf-8 -*-
+"""通过 subprocess 调用 ``python scripts/main.py``，验证真实入口（非仅 import main）。"""
+from __future__ import annotations
+
+import json
+import os
+import subprocess
+import sys
+import unittest
+
+from _support import IsolatedDataRoot, get_skill_root
+
+import importlib.metadata as metadata
+
+from jiangchang_skill_core import version_ge
+from util.constants import PLATFORM_KIT_MIN_VERSION
+
+
+def _platform_kit_meets_template_minimum() -> bool:
+    try:
+        installed = metadata.version("jiangchang-platform-kit")
+    except metadata.PackageNotFoundError:
+        return False
+    return version_ge(installed, PLATFORM_KIT_MIN_VERSION)
+
+
+def _run_main(args: list[str], timeout: int = 15) -> subprocess.CompletedProcess[str]:
+    root = get_skill_root()
+    main_py = os.path.join(root, "scripts", "main.py")
+    env = os.environ.copy()
+    env.setdefault("PYTHONIOENCODING", "utf-8")
+    env["PYTHONDONTWRITEBYTECODE"] = "1"
+    return subprocess.run(
+        [sys.executable, main_py, *args],
+        cwd=root,
+        env=env,
+        capture_output=True,
+        text=True,
+        encoding="utf-8",
+        errors="replace",
+        timeout=timeout,
+    )
+
+
+class TestEntrypointSubprocess(unittest.TestCase):
+    @unittest.skipUnless(
+        _platform_kit_meets_template_minimum(),
+        f"installed jiangchang-platform-kit below template minimum {PLATFORM_KIT_MIN_VERSION}",
+    )
+    def test_health_exit_zero(self) -> None:
+        with IsolatedDataRoot():
+            cp = _run_main(["health"])
+            self.assertEqual(cp.returncode, 0, msg=cp.stderr + cp.stdout)
+
+    def test_version_json_and_skill_slug(self) -> None:
+        with IsolatedDataRoot():
+            cp = _run_main(["version"])
+            self.assertEqual(cp.returncode, 0, msg=cp.stderr + cp.stdout)
+            payload = json.loads(cp.stdout.strip())
+            self.assertIn("version", payload)
+            self.assertIn("skill", payload)
+            from util.constants import SKILL_SLUG
+
+            self.assertEqual(payload["skill"], SKILL_SLUG)
+
+
+if __name__ == "__main__":
+    unittest.main()