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/local_meta_test.go

@@ -11,18 +11,20 @@ import (
 func TestLocalMetaEmptyOnFresh(t *testing.T) {
 	db, err := database.NewTestDB()
 	require.NoError(t, err)
+
 	defer func() { _ = db.Close() }()
 
 	repos := database.NewRepositories(db)
 
 	got, err := repos.LocalMeta.Get(context.Background(), database.LocalMetaKeyStorageURL)
 	require.NoError(t, err)
-	require.Equal(t, "", got, "fresh DB must return empty for unset keys, not error")
+	require.Empty(t, got, "fresh DB must return empty for unset keys, not error")
 }
 
 func TestLocalMetaSetGetRoundTrip(t *testing.T) {
 	db, err := database.NewTestDB()
 	require.NoError(t, err)
+
 	defer func() { _ = db.Close() }()
 
 	repos := database.NewRepositories(db)
@@ -38,6 +40,7 @@ func TestLocalMetaSetGetRoundTrip(t *testing.T) {
 func TestLocalMetaSetOverwrites(t *testing.T) {
 	db, err := database.NewTestDB()
 	require.NoError(t, err)
+
 	defer func() { _ = db.Close() }()
 
 	repos := database.NewRepositories(db)