Fix type references and minor formatting issues

• Update secret.Client references to secret.Encryption in api.go and HandlerOptions
• Add missing newline at end of encryption_test.go
• Remove trailing whitespace in daemon_install.go
• Fix nil pointer check in message_feed.go to check errMsg instead of errMsg.Error

Author: Furisto

backend/api/api.go

@@ -20,7 +20,7 @@ import (
 
 type AgentRuntime interface {
 	Memory() *memory.Client
-	Encryption() *secret.Client
+	Encryption() *secret.Encryption
 	EventHub() *event.MessageHub
 }
 
@@ -71,7 +71,7 @@ func (s *Server) Shutdown(ctx context.Context) error {
 
 type HandlerOptions struct {
 	DB           *memory.Client
-	Encryption   *secret.Client
+	Encryption   *secret.Encryption
 	AgentRuntime AgentRuntime
 
 	EventBus   *event.Bus

backend/secret/encryption_test.go

@@ -85,4 +85,4 @@ func TestKeysetSerialization(t *testing.T) {
 	if !bytes.Equal(decrypted, plaintext) {
 		t.Fatal("Decrypted data doesn't match original plaintext")
 	}
-}
+}

frontend/cli/cmd/daemon_install.go

@@ -342,7 +342,7 @@ func installSystemdService(ctx context.Context, cmd *cobra.Command, out io.Write
 	if output, err := command.Run(ctx, "systemctl", enableServiceArgs...); err != nil {
 		return fail.NewCommandError("systemctl", err, output, enableServiceArgs...)
 	}
-	
+
 	return nil
 }
 

frontend/cli/pkg/terminal/message_feed.go

@@ -173,7 +173,7 @@ func linesFromBottom(vp viewport.Model) int {
 }
 
 func (m *MessageFeed) upsertErrorMessage(errMsg *Error) {
-	if errMsg.Error == nil {
+	if errMsg == nil {
 		return
 	}