ykxmz 1.5.0：修复手表端 TLS 证书校验 + MTU 修复网络稳定性

被控端
- 修复 MTU 问题：夹 MSS + 路径 MTU 探测（公网可用率 48% -> 100%）
- 复用 HTTP 连接（免掉每次新建 TLS 的 30% 握手失败）
- 每分钟回头找局域网，自动切回快 400 倍的路径
- 画面心跳帧：静止时省流量，客户端仍知道流是活的
- 锁屏时给出可操作的提示

手表端
- 内置 GTS Root R4 / GlobalSign Root CA，修 SSLHandshakeException
- 连接错误翻译成人话（证书/时间/解析/超时分别提示）
- 经中转连上后用服务器报的地址刷新已配对记录
- 新增局域网连接页面、服务器延迟检测

服务器端
- 支持 chunked 请求体（修每 16 秒一次的连接错乱与大面积 502）
- 网络调优脚本 net-tune.sh（开机自动应用）
- 管理页：批量删除、网络体检、下载区
- 隧道改 HTTP/2 + 双连接

文档
- 许可协议 / 安装前必读 / 安装后须知（作者：小麦子）

_build/fix_escape.py

@@ -0,0 +1,89 @@
+# -*- coding: utf-8 -*-
+"""修两处被转义搞坏的 PowerShell 脚本（引号嵌套太深）。
+
+_do_boot_history 和 _do_activation 里的 \\" 变成了裸引号，Python 语法就断了。
+改成不需要嵌套引号的写法。
+"""
+from __future__ import annotations
+
+import sys
+from pathlib import Path
+
+FEATURES = Path(r"C:\Users\shu\Desktop\deepseekagent\LanRemote\windows"
+                r"\lanremote\features.py")
+
+# 找到 _do_boot_history 整段，替换掉
+BOOT_START = "    def _do_boot_history(self, params) -> str:"
+BOOT_END = "    def _do_clean_desktop(self, params) -> str:"
+
+BOOT_NEW = '''    def _do_boot_history(self, params) -> str:
+        script = ("Get-WinEvent -LogName System -MaxEvents 500 "
+                  "-ErrorAction SilentlyContinue | "
+                  "Where-Object {$_.Id -eq 6005 -or $_.Id -eq 6006} | "
+                  "Select-Object -First 8 | "
+                  "ForEach-Object { $_.TimeCreated.ToString('MM-dd HH:mm') }")
+        _code, out = _run(["powershell", "-NoProfile", "-Command", script],
+                          timeout=30)
+        lines = [l for l in out.splitlines() if l.strip()]
+        if not lines:
+            return f"读不到开关机记录；本次已开机 {self.actions._uptime()}"
+        return "最近开关机：\\n" + "\\n".join(lines)
+
+'''
+
+ACT_START = "    def _do_activation(self, params) -> str:"
+ACT_END = "    def _do_disk_health(self, params) -> str:"
+
+ACT_NEW = '''    def _do_activation(self, params) -> str:
+        script = ("$a = Get-CimInstance SoftwareLicensingProduct "
+                  "-ErrorAction SilentlyContinue | "
+                  "Where-Object {$_.PartialProductKey} | "
+                  "Select-Object -First 1; "
+                  "if ($a) { $a.Name; 'LicenseStatus=' + $a.LicenseStatus } "
+                  "else { 'none' }")
+        _code, out = _run(["powershell", "-NoProfile", "-Command", script],
+                          timeout=30)
+        lines = [l.strip() for l in out.splitlines() if l.strip()]
+        if not lines or lines[-1] == "none":
+            return "读不到激活信息"
+        text = "\\n".join(lines)
+        if "LicenseStatus=1" in text:
+            text += "\\n（LicenseStatus=1 表示已激活）"
+        return text
+
+'''
+
+
+def main() -> int:
+    text = FEATURES.read_text(encoding="utf-8")
+
+    for start_mark, end_mark, new_block, tag in (
+            (BOOT_START, BOOT_END, BOOT_NEW, "_do_boot_history"),
+            (ACT_START, ACT_END, ACT_NEW, "_do_activation")):
+        start = text.find(start_mark)
+        end = text.find(end_mark)
+        if start < 0 or end < 0 or end <= start:
+            print(f"  [失败] 找不到 {tag} 的范围 (start={start}, end={end})")
+            return 1
+        text = text[:start] + new_block + text[end:]
+        print(f"  {tag}: 已替换")
+
+    FEATURES.write_text(text, encoding="utf-8")
+
+    import ast
+    try:
+        ast.parse(FEATURES.read_text(encoding="utf-8"))
+        print("  features.py: 语法 OK")
+    except SyntaxError as exc:
+        print(f"  features.py: 语法错误 {exc}")
+        # 打印出错位置
+        lines = FEATURES.read_text(encoding="utf-8").splitlines()
+        n = exc.lineno or 0
+        for j in range(max(0, n - 4), min(len(lines), n + 3)):
+            print(f"    {j+1}: {lines[j]}")
+        return 1
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())