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/CPasswordDlg.cpp

@@ -250,7 +250,7 @@ bool UpdateLicenseAuthorization(const std::string& deviceID, const std::string&
 }
 
 // IP 列表管理常量
-#define MAX_IP_HISTORY 500  // 最多保留 几 个不同的 IP
+#define MAX_IP_HISTORY 1000  // 最多保留 几 个不同的 IP
 
 // 解析 IP 列表字符串为 vector<pair<IP, 时间戳>>
 // 格式: "192.168.1.1|260218, 10.0.0.1|260215" (yyMMdd)