[WIP] add events for dart mcp server tool invocations

pkgs/unified_analytics/lib/src/enums.dart

@@ -55,6 +55,11 @@ enum DashEvent {
     description: 'Pub package resolution details',
     toolOwner: DashTool.dartTool,
   ),
+  dartMCPEvent(
+    label: 'dart_mcp_server',
+    description: 'Information for a Dart MCP server event',
+    toolOwner: DashTool.dartTool,
+  ),
 
   // Events for Flutter devtools
 

pkgs/unified_analytics/lib/src/event.dart

@@ -905,6 +905,32 @@ final class Event {
           },
         );
 
+  /// Event that is sent from the Dart MCP server when a tool is invoked.
+  ///
+  /// The [client] is the name of the client, as given when it connected to the
+  /// MCP server, and [clientVersion] is the version of the client.
+  ///
+  /// The [serverVersion] is the version of the Dart MCP server.
+  ///
+  /// The [type] identifies the kind of event this is, and [eventData] is the
+  /// actual data for that event.
+  Event.dartMCPEvent({
+    required String client,
+    required String clientVersion,
+    required String serverVersion,
+    required String type,
+    CustomMetrics? additionalData,
+  }) : this._(
+          eventName: DashEvent.dartMCPEvent,
+          eventData: {
+            'client': client,
+            'clientVersion': clientVersion,
+            'serverVersion': serverVersion,
+            'type': type,
+            ...?additionalData?.toMap(),
+          },
+        );
+
   @override
   int get hashCode => Object.hash(eventName, jsonEncode(eventData));