1.7.1：修白屏 + 配对 + 官网管理页分家

手表端
- 修「连上后一片白屏」：initTabs() 从来没被调用过，
  导致 tabDefs 为 null、selectTab 直接 return，
  标签栏里只剩一个孤立的滑动指示器
- 应用名改成 ykxmz

被控端
- 修「设备已关闭新设备配对」：配对码本身就是密钥，
  拿着正确的码就该放行。老逻辑"首台配对后自动关窗"会把
  手表重装的人永久挡在外面
- 应用名改成 ykxmz

服务器端
- / 改成官网（公开，简洁介绍 + 下载）
- /zhingzhuanzhan 中转站管理（要登录），/admin 自动跳转
- 管理账号 xmz7891，可改
- 官网 / 登录页 / 管理页都加上 favicon

_build/probe_feature_list.py

@@ -0,0 +1,121 @@
+# -*- coding: utf-8 -*-
+r"""白屏排查：直接问被控端要 feature_list，看返回什么。
+
+手表连上后是白屏 —— 说明 buildFeatureTab() 里那个
+    client.call({"cmd": "feature_list"})
+没拿到可用数据。这里用 Python 直接走一遍同样的流程，
+把原始返回打出来。
+"""
+from __future__ import annotations
+
+import json
+import os
+import shutil
+import socket
+import subprocess
+import sys
+import time
+from pathlib import Path
+
+ROOT = Path(r"C:\Users\shu\Desktop\deepseekagent\LanRemote")
+PORT = 8871
+DATA = ROOT / "_build" / "_whitetest"
+
+
+def send(sock, obj) -> dict:
+    sock.sendall((json.dumps(obj, ensure_ascii=False) + "\n").encode("utf-8"))
+    buf = b""
+    deadline = time.time() + 20
+    while time.time() < deadline:
+        chunk = sock.recv(65536)
+        if not chunk:
+            break
+        buf += chunk
+        if b"\n" in buf:
+            line = buf.split(b"\n", 1)[0]
+            return json.loads(line.decode("utf-8"))
+    raise TimeoutError("没收到回复")
+
+
+def main() -> int:
+    shutil.rmtree(DATA, ignore_errors=True)
+    env = dict(os.environ)
+    env["YKXMZ_DATA"] = str(DATA)
+    env["PYTHONIOENCODING"] = "utf-8"
+
+    print("  起被控端…")
+    proc = subprocess.Popen(
+        [sys.executable, "run_agent.py", "--port", str(PORT),
+         "--new-code", "--add-device", "10"],
+        cwd=str(ROOT / "windows"), env=env,
+        stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+
+    try:
+        ready = False
+        for _ in range(50):
+            try:
+                s = socket.create_connection(("127.0.0.1", PORT), timeout=1)
+                s.close()
+                ready = True
+                break
+            except OSError:
+                time.sleep(0.4)
+        print(f"  端口就绪: {ready}")
+        if not ready:
+            return 1
+        time.sleep(1)
+
+        # 读配对码
+        settings = json.loads((DATA / "settings.json").read_text(encoding="utf-8"))
+        code = settings.get("pairing_code")
+        print(f"  配对码: {code}")
+
+        sock = socket.create_connection(("127.0.0.1", PORT), timeout=10)
+        sock.settimeout(20)
+
+        print()
+        print("  1) 配对（命令名是 pair，不是 handshake）")
+        reply = send(sock, {"cmd": "pair", "code": code,
+                            "deviceId": "watch-probe-1",
+                            "name": "手表"})
+        print(f"     完整回复: {json.dumps(reply, ensure_ascii=False)[:400]}")
+        print(f"     ok={reply.get('ok')}  token={'有' if reply.get('token') else '无'}")
+        token = reply.get("token")
+
+        print()
+        print("  2) feature_list")
+        reply = send(sock, {"cmd": "feature_list", "token": token})
+        print(f"     顶层键: {list(reply.keys())}")
+        features = reply.get("features")
+        print(f"     features 类型: {type(features).__name__}")
+        if isinstance(features, list):
+            print(f"     features 条数: {len(features)}")
+            groups = {}
+            for item in features[:200]:
+                if isinstance(item, dict):
+                    g = item.get("group", "(无 group)")
+                    groups[g] = groups.get(g, 0) + 1
+                else:
+                    print(f"     ⚠ 非字典元素: {item!r}")
+            print(f"     分组: {groups}")
+            if features:
+                print(f"     第一条: {json.dumps(features[0], ensure_ascii=False)[:200]}")
+        else:
+            print(f"     ⚠ features 不是列表: {str(features)[:200]}")
+
+        print()
+        print("  3) 原始返回（前 400 字符）")
+        print(f"     {json.dumps(reply, ensure_ascii=False)[:400]}")
+
+        sock.close()
+    finally:
+        proc.terminate()
+        try:
+            proc.wait(timeout=10)
+        except subprocess.TimeoutExpired:
+            proc.kill()
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())