Feature: Add get_audit_log MCP tool

Expose the server main-window audit log (host online/offline, operation
results, alerts) as a read-only, no-arg, in-memory MCP tool. The log lives
in m_CList_Message, a CListCtrl that is only safe to touch on the UI
thread, so add a thread-safe mirror m_MessageLog (guarded by m_cs) and keep
it in sync at the four item-mutation sites: ShowMessage, OnShowErrMessage,
OnMsglogDelete and OnMsglogClear. The tool reads the mirror directly under
m_cs and returns up to MAX_MESSAGE_COUNT (1000) entries, newest first.

Co-Authored-By: deepseek-v4-pro

server/2015Remote/McpServer.cpp

@@ -639,6 +639,34 @@ Json::Value BuildClientLogOutputSchema() {
     return schema;
 }
 
+// get_audit_log 的 outputSchema（服务端消息/审计日志条目数组）
+Json::Value BuildAuditLogOutputSchema() {
+    Json::Value props(Json::objectValue);
+
+    Json::Value entriesProp(Json::objectValue);
+    entriesProp["type"] = "array";
+    Json::Value items(Json::objectValue);
+    items["type"] = "object";
+    Json::Value itemProps(Json::objectValue);
+    const char* strFields[] = { "type", "time", "msg" };
+    for (const char* f : strFields) {
+        Json::Value s(Json::objectValue);
+        s["type"] = "string";
+        itemProps[f] = s;
+    }
+    items["properties"] = itemProps;
+    entriesProp["items"] = items;
+    props["entries"] = entriesProp;
+
+    Json::Value schema(Json::objectValue);
+    schema["type"] = "object";
+    schema["properties"] = props;
+    Json::Value required(Json::arrayValue);
+    required.append("entries");
+    schema["required"] = required;
+    return schema;
+}
+
 // get_screenshot 的 outputSchema（image 元数据；base64 数据在 content 的 image 块中）
 Json::Value BuildScreenshotOutputSchema() {
     Json::Value props(Json::objectValue);
@@ -897,6 +925,23 @@ std::string BuildToolsListResult(const Json::Value& id) {
         tools.append(tool);
     }
 
+    // 11) get_audit_log（服务端本地：主界面消息/审计日志，纯内存，无子链接）
+    {
+        Json::Value tool(Json::objectValue);
+        tool["name"] = "get_audit_log";
+        tool["description"] = u8"获取 YAMA 服务端主界面的消息/审计日志（主机上线/下线、操作结果、告警等）。返回列表内当前全部条目（最多 1000 条，新在前）。只读、纯内存。";
+
+        Json::Value inputSchema(Json::objectValue);
+        inputSchema["type"] = "object";
+        inputSchema["properties"] = Json::Value(Json::objectValue);
+        inputSchema["required"] = Json::Value(Json::arrayValue);
+        tool["inputSchema"] = inputSchema;
+
+        tool["outputSchema"] = BuildAuditLogOutputSchema();
+
+        tools.append(tool);
+    }
+
     result["tools"] = tools;
     return BuildResult(id, result);
 }
@@ -1418,6 +1463,41 @@ std::string BuildGetClientLog(const Json::Value& id, const Json::Value& args, CM
     return BuildResult(id, result);
 }
 
+// tools/call：get_audit_log（服务端本地消息日志，读取 UI 日志列表的线程安全镜像）
+std::string BuildGetAuditLog(const Json::Value& id, CMy2015RemoteDlg* parent) {
+    Json::Value entries(Json::arrayValue);
+    if (parent) {
+        EnterCriticalSection(&parent->m_cs);
+        // m_MessageLog 新在前、旧在后（与界面一致），直接顺序输出。
+        for (const auto& e : parent->m_MessageLog) {
+            Json::Value item(Json::objectValue);
+            item["type"] = ToUtf8(e.type.c_str(), 936);
+            item["time"] = ToUtf8(e.time.c_str(), 936);
+            item["msg"]  = ToUtf8(e.msg.c_str(), 936);
+            entries.append(item);
+        }
+        LeaveCriticalSection(&parent->m_cs);
+    }
+
+    int count = (int)entries.size();
+
+    Json::Value result(Json::objectValue);
+    Json::Value structuredContent(Json::objectValue);
+    structuredContent["entries"] = entries;
+    result["structuredContent"] = structuredContent;
+
+    Json::Value content(Json::arrayValue);
+    Json::Value item(Json::objectValue);
+    item["type"] = "text";
+    item["text"] = count > 0 ? std::string(u8"共 ") + std::to_string(count) + std::string(u8" 条日志。")
+                             : std::string(u8"当前无日志。");
+    content.append(item);
+    result["content"] = content;
+    result["isError"] = false;
+
+    return BuildResult(id, result);
+}
+
 // tools/call 分派
 std::string BuildToolsCall(const Json::Value& root, CMy2015RemoteDlg* parent) {
     const Json::Value& id = root["id"];
@@ -1440,6 +1520,7 @@ std::string BuildToolsCall(const Json::Value& root, CMy2015RemoteDlg* parent) {
     if (toolName == "list_files")        return BuildListFiles(id, args, parent);
     if (toolName == "list_services")     return BuildListServices(id, args, parent);
     if (toolName == "get_client_log")    return BuildGetClientLog(id, args, parent);
+    if (toolName == "get_audit_log")     return BuildGetAuditLog(id, parent);
 
     return BuildError(id, -32602,
                       "Unknown tool: " + (toolName.empty() ? std::string("(empty)") : toolName));