diff --git a/cmd/doctor/cmd_doctor.go b/cmd/doctor/cmd_doctor.go
index 4aec921d..0b73e2a4 100644
--- a/cmd/doctor/cmd_doctor.go
+++ b/cmd/doctor/cmd_doctor.go
@@ -2,6 +2,7 @@
 package doctor
 
 import (
+	"errors"
 	"fmt"
 
 	"forge.lthn.ai/core/cli/pkg/cli"
@@ -98,7 +99,7 @@ func runDoctor(verbose bool) error {
 		cli.Error(i18n.T("cmd.doctor.issues", map[string]any{"Count": failed}))
 		fmt.Printf("\n%s\n", i18n.T("cmd.doctor.install_missing"))
 		printInstallInstructions()
-		return fmt.Errorf("%s", i18n.T("cmd.doctor.issues_error", map[string]any{"Count": failed}))
+		return errors.New(i18n.T("cmd.doctor.issues_error", map[string]any{"Count": failed}))
 	}
 
 	cli.Success(i18n.T("cmd.doctor.ready"))
diff --git a/cmd/module/cmd_install.go b/cmd/module/cmd_install.go
index 0cade6b8..c35d513b 100644
--- a/cmd/module/cmd_install.go
+++ b/cmd/module/cmd_install.go
@@ -2,7 +2,7 @@ package module
 
 import (
 	"context"
-	"fmt"
+	"errors"
 
 	"forge.lthn.ai/core/cli/pkg/cli"
 	"forge.lthn.ai/core/go/pkg/i18n"
@@ -21,7 +21,7 @@ func addInstallCommand(parent *cli.Command) {
 		i18n.T("Install a module by cloning its Git repository, verifying the manifest signature, and registering it.\n\nThe --repo flag is required and specifies the Git URL to clone from."),
 		func(cmd *cli.Command, args []string) error {
 			if installRepo == "" {
-				return fmt.Errorf("--repo flag is required")
+				return errors.New("--repo flag is required")
 			}
 			return runInstall(args[0], installRepo, installSignKey)
 		},
diff --git a/cmd/module/cmd_update.go b/cmd/module/cmd_update.go
index 4b5fcf3c..c3583af4 100644
--- a/cmd/module/cmd_update.go
+++ b/cmd/module/cmd_update.go
@@ -2,6 +2,7 @@ package module
 
 import (
 	"context"
+	"errors"
 	"fmt"
 
 	"forge.lthn.ai/core/cli/pkg/cli"
@@ -20,7 +21,7 @@ func addUpdateCommand(parent *cli.Command) {
 				return runUpdateAll()
 			}
 			if len(args) == 0 {
-				return fmt.Errorf("module code required (or use --all)")
+				return errors.New("module code required (or use --all)")
 			}
 			return runUpdate(args[0])
 		},
diff --git a/cmd/plugin/cmd_update.go b/cmd/plugin/cmd_update.go
index 0edcf997..60014b79 100644
--- a/cmd/plugin/cmd_update.go
+++ b/cmd/plugin/cmd_update.go
@@ -2,6 +2,7 @@ package plugin
 
 import (
 	"context"
+	"errors"
 	"fmt"
 
 	"forge.lthn.ai/core/cli/pkg/cli"
@@ -22,7 +23,7 @@ func addUpdateCommand(parent *cli.Command) {
 				return runUpdateAll()
 			}
 			if len(args) == 0 {
-				return fmt.Errorf("plugin name required (or use --all)")
+				return errors.New("plugin name required (or use --all)")
 			}
 			return runUpdate(args[0])
 		},
diff --git a/pkg/cli/daemon.go b/pkg/cli/daemon.go
index 961bb268..580b83a5 100644
--- a/pkg/cli/daemon.go
+++ b/pkg/cli/daemon.go
@@ -3,6 +3,7 @@ package cli
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"net"
 	"net/http"
@@ -309,7 +310,7 @@ func (d *Daemon) Start() error {
 	defer d.mu.Unlock()
 
 	if d.running {
-		return fmt.Errorf("daemon already running")
+		return errors.New("daemon already running")
 	}
 
 	// Acquire PID file
@@ -339,7 +340,7 @@ func (d *Daemon) Run(ctx context.Context) error {
 	d.mu.Lock()
 	if !d.running {
 		d.mu.Unlock()
-		return fmt.Errorf("daemon not started - call Start() first")
+		return errors.New("daemon not started - call Start() first")
 	}
 	d.mu.Unlock()
 
diff --git a/pkg/cli/prompt.go b/pkg/cli/prompt.go
index d9eb993e..0532901f 100644
--- a/pkg/cli/prompt.go
+++ b/pkg/cli/prompt.go
@@ -2,6 +2,7 @@ package cli
 
 import (
 	"bufio"
+	"errors"
 	"fmt"
 	"os"
 	"strconv"
@@ -45,7 +46,7 @@ func Select(label string, options []string) (string, error) {
 
 	n, err := strconv.Atoi(strings.TrimSpace(input))
 	if err != nil || n < 1 || n > len(options) {
-		return "", fmt.Errorf("invalid selection")
+		return "", errors.New("invalid selection")
 	}
 	return options[n-1], nil
 }
diff --git a/pkg/cli/utils.go b/pkg/cli/utils.go
index 13d0471a..da84cb3a 100644
--- a/pkg/cli/utils.go
+++ b/pkg/cli/utils.go
@@ -3,6 +3,7 @@ package cli
 import (
 	"bufio"
 	"context"
+	"errors"
 	"fmt"
 	"os"
 	"os/exec"
@@ -474,7 +475,6 @@ func parseMultiSelection(input string, maxItems int) ([]int, error) {
 	return result, nil
 }
 
-
 // ChooseMultiAction prompts for multiple selections using grammar composition.
 //
 //	files := ChooseMultiAction("select", "files", files)
@@ -495,14 +495,14 @@ func GitClone(ctx context.Context, org, repo, path string) error {
 		}
 		errStr := strings.TrimSpace(string(output))
 		if strings.Contains(errStr, "already exists") {
-			return fmt.Errorf("%s", errStr)
+			return errors.New(errStr)
 		}
 	}
 	// Fall back to SSH clone
 	cmd := exec.CommandContext(ctx, "git", "clone", fmt.Sprintf("git@github.com:%s/%s.git", org, repo), path)
 	output, err := cmd.CombinedOutput()
 	if err != nil {
-		return fmt.Errorf("%s", strings.TrimSpace(string(output)))
+		return errors.New(strings.TrimSpace(string(output)))
 	}
 	return nil
 }