feat: support merging multiple subscriptions

internal/cli/config.go

@@ -9,7 +9,7 @@ func newConfigCmd() *cobra.Command {
 		Use:   "config",
 		Short: "Manage core configuration",
 	}
-	cmd.PersistentFlags().StringVar(&configFile, "config-file", "", "Path to the user config YAML file (default: core-config.yaml in config dir)")
+	cmd.PersistentFlags().StringVar(&configFile, "config-file", "", "Path to the user config YAML file (default: config/core-config.yaml in config dir)")
 	cmd.PersistentFlags().StringVar(&outputFile, "output-file", "", "Path to the generated config file (default: generated_config.yaml in config dir)")
 	cmd.PersistentFlags().StringVar(&subscriptionName, "subscription", "", "Name of the subscription to use for config generation (default: active subscription)")
 

internal/cli/subscription.go

@@ -16,6 +16,7 @@ func newSubscriptionCmd() *cobra.Command {
 		newSubscriptionSetURLCmd(),
 		newSubscriptionGetURLCmd(),
 		newSubscriptionActivateCmd(),
+		newSubscriptionDeactivateCmd(),
 		newSubscriptionListCmd(),
 		newSubscriptionStorageCmd(),
 	)
@@ -126,7 +127,7 @@ func newSubscriptionGetURLCmd() *cobra.Command {
 func newSubscriptionActivateCmd() *cobra.Command {
 	return &cobra.Command{
 		Use:   "activate <name>",
-		Short: "Activate a subscription",
+		Short: "Activate a subscription (additive — other active subscriptions stay active)",
 		Args:  cobra.ExactArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {
 			m, err := newManagers("", "", "")
@@ -142,6 +143,25 @@ func newSubscriptionActivateCmd() *cobra.Command {
 	}
 }
 
+func newSubscriptionDeactivateCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "deactivate <name>",
+		Short: "Deactivate a subscription",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			m, err := newManagers("", "", "")
+			if err != nil {
+				return err
+			}
+			m.Subscription.DeactivateSubscription(args[0])
+			if m.CoreConfig.Apply() {
+				m.Core.ReloadService("mihomo")
+			}
+			return nil
+		},
+	}
+}
+
 func newSubscriptionListCmd() *cobra.Command {
 	return &cobra.Command{
 		Use:   "list",