在准备环境前提交次全部更改。

scripts/ops/set_default_pwsh7.py

@@ -0,0 +1,98 @@
+"""
+一次性脚本：将 Windows 系统级默认 shell 切换为 PowerShell 7
+1. Windows Terminal 默认 profile → pwsh.exe
+2. OpenSSH DefaultShell 注册表 → pwsh.exe
+3. 系统 ComSpec 环境变量不动（保持 cmd.exe 兼容）
+"""
+import json
+import os
+import subprocess
+import winreg
+
+PWSH7 = r"C:\Program Files\PowerShell\7\pwsh.exe"
+
+# ── 1. Windows Terminal settings.json ──
+wt_settings = os.path.join(
+    os.environ["LOCALAPPDATA"],
+    "Packages",
+    "Microsoft.WindowsTerminal_8wekyb3d8bbwe",
+    "LocalState",
+    "settings.json",
+)
+wt_preview = os.path.join(
+    os.environ["LOCALAPPDATA"],
+    "Packages",
+    "Microsoft.WindowsTerminalPreview_8wekyb3d8bbwe",
+    "LocalState",
+    "settings.json",
+)
+
+# Windows Terminal 的 PowerShell 7 profile GUID（官方固定值）
+PWSH7_GUID = "{574e775e-4f2a-5b96-ac1e-a2962a402336}"
+
+for path in [wt_settings, wt_preview]:
+    if os.path.isfile(path):
+        with open(path, "r", encoding="utf-8") as f:
+            content = f.read()
+        # 去掉 JSON 注释行（Windows Terminal 允许 // 注释）
+        lines = []
+        for line in content.splitlines():
+            stripped = line.lstrip()
+            if stripped.startswith("//"):
+                continue
+            lines.append(line)
+        clean = "\n".join(lines)
+        try:
+            cfg = json.loads(clean)
+        except json.JSONDecodeError:
+            print(f"跳过（JSON 解析失败）: {path}")
+            continue
+        cfg["defaultProfile"] = PWSH7_GUID
+        with open(path, "w", encoding="utf-8") as f:
+            json.dump(cfg, f, indent=4, ensure_ascii=False)
+        print(f"已更新 Windows Terminal defaultProfile: {path}")
+    else:
+        print(f"未找到 Windows Terminal 配置: {path}")
+
+# ── 2. OpenSSH DefaultShell 注册表 ──
+try:
+    key = winreg.CreateKeyEx(
+        winreg.HKEY_LOCAL_MACHINE,
+        r"SOFTWARE\OpenSSH",
+        0,
+        winreg.KEY_SET_VALUE,
+    )
+    winreg.SetValueEx(key, "DefaultShell", 0, winreg.REG_SZ, PWSH7)
+    winreg.CloseKey(key)
+    print(f"已设置 OpenSSH DefaultShell → {PWSH7}")
+except PermissionError:
+    print("OpenSSH 注册表写入需要管理员权限，跳过（可手动以管理员运行）")
+except Exception as e:
+    print(f"OpenSSH 注册表写入失败: {e}")
+
+# ── 3. 将 pwsh.exe 所在目录加到 PATH 最前面（如果不在的话）──
+pwsh_dir = os.path.dirname(PWSH7)
+current_path = os.environ.get("PATH", "")
+if pwsh_dir.lower() not in current_path.lower():
+    # 写入用户级 PATH
+    try:
+        key = winreg.OpenKeyEx(
+            winreg.HKEY_CURRENT_USER,
+            r"Environment",
+            0,
+            winreg.KEY_READ | winreg.KEY_SET_VALUE,
+        )
+        user_path, _ = winreg.QueryValueEx(key, "Path")
+        if pwsh_dir.lower() not in user_path.lower():
+            new_path = pwsh_dir + ";" + user_path
+            winreg.SetValueEx(key, "Path", 0, winreg.REG_EXPAND_SZ, new_path)
+            print(f"已将 {pwsh_dir} 添加到用户 PATH 最前面")
+        else:
+            print(f"{pwsh_dir} 已在用户 PATH 中")
+        winreg.CloseKey(key)
+    except Exception as e:
+        print(f"PATH 更新失败: {e}")
+else:
+    print(f"{pwsh_dir} 已在 PATH 中")
+
+print("\n完成。新开的终端窗口将默认使用 PowerShell 7。")