Fix: Decode process list names/paths as GBK on Windows

Process management decoded the client's process name/path bytes with
GetClientEncoding, which returns UTF-8 for CLIENT_CAP_UTF8 clients. But
the Windows client builds the process list with the ANSI A-interface
(Process32FirstA / QueryFullProcessImageNameA), which emits the client's
system code page (GBK on Chinese Windows) regardless of the UTF-8
capability -- unlike window titles, which were migrated to the
W-interface plus UTF-8. Decoding GBK as UTF-8 garbled Chinese process
names and paths.

Add GetProcessListEncoding(): 936 for Windows clients, UTF-8 for
LNX/MAC, matching McpServer::BuildListProcesses, and use it in
ShowProcessList (which still writes via LVM_SETITEMTEXTW).

Also raise the IP history cap to 1000 and rename the experimental
"隐私屏幕" menu item to "虚拟屏幕".

Co-Authored-By: deepseek-v4-pro

server/2015Remote/2015RemoteDlg.cpp

@@ -239,6 +239,28 @@ UINT GetClientEncoding(context* ctx) {
     return 936;
 }
 
+// 客户端「进程名/路径」编码：Windows 用 A 接口生成，恒为客户端 ANSI（简中=GBK/936），
+// 不随 CLIENT_CAP_UTF8 转 UTF-8；LNX/MAC 的 /proc 天然 UTF-8。
+// 不能用 GetClientEncoding——它按能力位返回 CP_UTF8，会误解 Windows 客户端的 GBK 进程名。
+// 与 McpServer::BuildListProcesses 的判定保持一致。
+UINT GetProcessListEncoding(context* ctx) {
+    if (!ctx) return 936;
+    CString clientType = ctx->GetAdditionalData(RES_CLIENT_TYPE);
+    if (clientType == "LNX" || clientType == "MAC") return CP_UTF8;
+    // 子连接情形：自身 RES_CLIENT_TYPE 为空 -> 找主连接取 clientType
+    if (g_2015RemoteDlg) {
+        context* mainCtx = g_2015RemoteDlg->FindHostByClientID(ctx->GetClientID());
+        if (!mainCtx) {
+            mainCtx = g_2015RemoteDlg->FindHostByIP(ctx->GetPeerName());
+        }
+        if (mainCtx) {
+            CString mainType = mainCtx->GetAdditionalData(RES_CLIENT_TYPE);
+            if (mainType == "LNX" || mainType == "MAC") return CP_UTF8;
+        }
+    }
+    return 936;
+}
+
 // 授权日志频率控制：首次必须记录，状态变化必须记录，相同状态每小时记录一次
 static bool ShouldLogAuth(const std::string& sn, int success) {
     struct AuthLogState {