Apply mechanical lint fixes for golangci-lint v2.12.2 rollout

Auto-remediate style-only findings (wsl_v5, nlreturn, noinlineerr,
modernize, intrange, perfsprint, usetesting, unconvert, errorlint,
gocritic, testifylint) and rename printf-style helpers to f-suffixed
names (goprintffuncname): ui.Writer message methods, cli.ReportErrorf,
database.Fatalf, vaultik stdoutf.

internal/crypto/encryption.go

@@ -2,6 +2,7 @@ package crypto
 
 import (
 	"bytes"
+	"errors"
 	"fmt"
 	"io"
 	"sync"
@@ -25,7 +26,7 @@ type Encryptor struct {
 // public keys are invalid or if no recipients are specified.
 func NewEncryptor(publicKeys []string) (*Encryptor, error) {
 	if len(publicKeys) == 0 {
-		return nil, fmt.Errorf("at least one recipient is required")
+		return nil, errors.New("at least one recipient is required")
 	}
 
 	recipients := make([]age.Recipient, 0, len(publicKeys))
@@ -34,6 +35,7 @@ func NewEncryptor(publicKeys []string) (*Encryptor, error) {
 		if err != nil {
 			return nil, fmt.Errorf("parsing age recipient %s: %w", key, err)
 		}
+
 		recipients = append(recipients, recipient)
 	}
 
@@ -126,7 +128,7 @@ func (e *Encryptor) EncryptWriter(dst io.Writer) (io.WriteCloser, error) {
 // of the public keys are invalid or if no recipients are specified.
 func (e *Encryptor) UpdateRecipients(publicKeys []string) error {
 	if len(publicKeys) == 0 {
-		return fmt.Errorf("at least one recipient is required")
+		return errors.New("at least one recipient is required")
 	}
 
 	recipients := make([]age.Recipient, 0, len(publicKeys))
@@ -135,6 +137,7 @@ func (e *Encryptor) UpdateRecipients(publicKeys []string) error {
 		if err != nil {
 			return fmt.Errorf("parsing age recipient %s: %w", key, err)
 		}
+
 		recipients = append(recipients, recipient)
 	}