feat: add Active Agent monitoring plugin

lib/honeybadger/config/defaults.rb

@@ -325,6 +325,11 @@ class Boolean; end
         default: false,
         type: Boolean
       },
+      "active_agent.insights.enabled": {
+        description: "Enable automatic data collection for Active Agent.",
+        default: true,
+        type: Boolean
+      },
       "active_job.attempt_threshold": {
         description: "The number of attempts before notifications will be sent.",
         default: 0,

lib/honeybadger/plugins/active_agent.rb

@@ -0,0 +1,16 @@
+require "honeybadger/plugin"
+require "honeybadger/ruby"
+require "honeybadger/notification_subscriber"
+
+module Honeybadger
+  Plugin.register :active_agent do
+    requirement { defined?(::ActiveAgent) }
+
+    execution do
+      if config.load_plugin_insights?(:active_agent)
+        # TODO: NotificationSubscriber may be the wrong thing to use here, or we may want to subclass it.
+        ::ActiveSupport::Notifications.subscribe(/(prompt|embed|stream_open|stream_close|stream_chunk|tool_call|process|provider)\.active_agent/, Honeybadger::NotificationSubscriber.new)
+      end
+    end
+  end
+end