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/database/errors.go

@@ -6,15 +6,16 @@ import (
 	"os"
 )
 
-// Fatal prints an error message to stderr and exits with status 1
-func Fatal(format string, args ...interface{}) {
+// Fatalf prints an error message to stderr and exits with status 1
+func Fatalf(format string, args ...any) {
 	fmt.Fprintf(os.Stderr, "FATAL: "+format+"\n", args...)
 	os.Exit(1)
 }
 
 // CloseRows closes rows and exits on error
 func CloseRows(rows *sql.Rows) {
-	if err := rows.Close(); err != nil {
-		Fatal("failed to close rows: %v", err)
+	err := rows.Close()
+	if err != nil {
+		Fatalf("failed to close rows: %v", err)
 	}
 }