feat(agent): add connection reporting for SSH and reconnecting PTY (#16652)

Updates #15139

cli/agent.go

@@ -54,6 +54,8 @@ func (r *RootCmd) workspaceAgent() *serpent.Command {
 		agentHeaderCommand   string
 		agentHeader          []string
 		devcontainersEnabled bool
+
+		experimentalConnectionReports bool
 	)
 	cmd := &serpent.Command{
 		Use:   "agent",
@@ -325,6 +327,10 @@ func (r *RootCmd) workspaceAgent() *serpent.Command {
 				containerLister = agentcontainers.NewDocker(execer)
 			}
 
+			if experimentalConnectionReports {
+				logger.Info(ctx, "experimental connection reports enabled")
+			}
+
 			agnt := agent.New(agent.Options{
 				Client:            client,
 				Logger:            logger,
@@ -353,6 +359,7 @@ func (r *RootCmd) workspaceAgent() *serpent.Command {
 				ContainerLister:    containerLister,
 
 				ExperimentalContainersEnabled: devcontainersEnabled,
+				ExperimentalConnectionReports: experimentalConnectionReports,
 			})
 
 			promHandler := agent.PrometheusMetricsHandler(prometheusRegistry, logger)
@@ -482,6 +489,14 @@ func (r *RootCmd) workspaceAgent() *serpent.Command {
 			Description: "Allow the agent to automatically detect running devcontainers.",
 			Value:       serpent.BoolOf(&devcontainersEnabled),
 		},
+		{
+			Flag:        "experimental-connection-reports-enable",
+			Hidden:      true,
+			Default:     "false",
+			Env:         "CODER_AGENT_EXPERIMENTAL_CONNECTION_REPORTS_ENABLE",
+			Description: "Enable experimental connection reports.",
+			Value:       serpent.BoolOf(&experimentalConnectionReports),
+		},
 	}
 
 	return cmd