Feature: Add "Online Notify" to log message context menu in main dialog

- Add "Online Notify" menu item to the log message list (m_CList_Message)
  right-click context menu, allowing users to extract IPv4 addresses from
  selected log entries and add them to notification keywords
- Implement ExtractFirstIPFromMessage() for dependency-free IPv4 parsing
  with per-segment 0-255 validation, handling diverse log message formats
- Extend NotifyManager::ShouldNotify with IP column (ONLINELIST_IP)
  fallback check, ensuring IP keywords match regardless of the user's
  configured ColumnIndex setting
- OnMsglogLoginNotify only appends keywords and enables the rule without
  overwriting the user's existing ColumnIndex or TriggerType settings
- Menu item is automatically grayed out when PowerShell is unavailable
  or no log entry is selected
- Sync en_US / zh_TW language files with new translation strings

Co-Authored-By: DeepSeek V4 Pro

server/2015Remote/resource.h

@@ -991,6 +991,7 @@
 #define ID_CANCEL_SHARE                 33042
 #define ID_MSGLOG_COPY                  33043
 #define ID_MSGLOG_SEARCH                33078
+#define ID_MSGLOG_LOGIN_NOTIFY          33079
 #define ID_WEB_REMOTE_CONTROL           33044
 #define ID_TOOL_PLUGIN_SETTINGS         33045
 #define ID_33046                        33046
@@ -1032,7 +1033,7 @@
 #ifdef APSTUDIO_INVOKED
 #ifndef APSTUDIO_READONLY_SYMBOLS
 #define _APS_NEXT_RESOURCE_VALUE        398
-#define _APS_NEXT_COMMAND_VALUE         33079
+#define _APS_NEXT_COMMAND_VALUE         33080
 #define _APS_NEXT_CONTROL_VALUE         2542
 #define _APS_NEXT_SYMED_VALUE           105
 #endif