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/NotifyManager.cpp

@@ -141,35 +141,52 @@ bool NotifyManager::ShouldNotify(context* ctx, std::string& outMatchedKeyword, c
         }
     }
 
-    // Get column text (for COMPUTER_NAME column, prefer remark if available)
+    // Split pattern by semicolon and get keywords
+    std::vector<std::string> keywords = SplitString(rule.matchPattern, ';');
+
+    // Helper: check if any keyword matches a given column text
+    auto matchColumn = [&keywords, this](const CString& colText) -> std::string {
+        if (colText.IsEmpty()) return "";
+        std::string colTextStr = CT2A(colText, CP_UTF8);
+        std::string colLower = colTextStr;
+        std::transform(colLower.begin(), colLower.end(), colLower.begin(), ::tolower);
+
+        for (const auto& kw : keywords) {
+            std::string trimmed = Trim(kw);
+            if (trimmed.empty()) continue;
+
+            std::string kwLower = trimmed;
+            std::transform(kwLower.begin(), kwLower.end(), kwLower.begin(), ::tolower);
+
+            if (colLower.find(kwLower) != std::string::npos) {
+                return trimmed;
+            }
+        }
+        return "";
+    };
+
+    // Check primary column (for COMPUTER_NAME column, prefer remark if available)
     CString colText;
     if (rule.columnIndex == ONLINELIST_COMPUTER_NAME && !remark.IsEmpty()) {
         colText = remark;
     } else {
         colText = ctx->GetClientData(rule.columnIndex);
     }
-    if (colText.IsEmpty()) return false;
+    std::string matched = matchColumn(colText);
+    if (!matched.empty()) {
+        outMatchedKeyword = matched;
+        m_config.lastNotifyTime[clientId] = now;
+        return true;
+    }
 
-    // Convert to std::string for matching
-    std::string colTextStr = CT2A(colText, CP_UTF8);
-
-    // Split pattern by semicolon and check each keyword
-    std::vector<std::string> keywords = SplitString(rule.matchPattern, ';');
-    for (const auto& kw : keywords) {
-        std::string trimmed = Trim(kw);
-        if (trimmed.empty()) continue;
-
-        // Case-insensitive substring search
-        std::string colLower = colTextStr;
-        std::string kwLower = trimmed;
-        std::transform(colLower.begin(), colLower.end(), colLower.begin(), ::tolower);
-        std::transform(kwLower.begin(), kwLower.end(), kwLower.begin(), ::tolower);
-
-        if (colLower.find(kwLower) != std::string::npos) {
-            outMatchedKeyword = trimmed;
-            m_config.lastNotifyTime[clientId] = now;
-            return true;
-        }
+    // Also check the IP column (ONLINELIST_IP) so IP keywords added from log
+    // messages can match against host IP addresses when they come online.
+    CString ipText = ctx->GetClientData(ONLINELIST_IP);
+    matched = matchColumn(ipText);
+    if (!matched.empty()) {
+        outMatchedKeyword = matched;
+        m_config.lastNotifyTime[clientId] = now;
+        return true;
     }
 
     return false;