style: apply gofmt

Estate-wide consolidation pass. golangci-lint v2 default set enables NO
formatter, so gofmt drift accumulated silently across the estate -- 8 repos
were carrying it, this one included. Same hole that let two files rot in
dma-cli until they were found by hand (dma-cli#12).

Mechanical and deterministic: `gofmt -w`, nothing hand-edited. Verified
before commit -- gofmt -l now reports 0, go build and go vet both pass.

Clears this repo to adopt the canonical .golangci.yml (infra
ci-templates/golangci.yml, infra#309 pattern) in a later wave.

internal/auth/jwt_test.go

@@ -10,10 +10,10 @@ import (
 	"testing"
 	"time"
 
+	"git.d-ma.be/mathias/hyperguild/internal/auth"
 	"github.com/lestrrat-go/jwx/v2/jwa"
 	"github.com/lestrrat-go/jwx/v2/jwk"
 	"github.com/lestrrat-go/jwx/v2/jwt"
-	"git.d-ma.be/mathias/hyperguild/internal/auth"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
@@ -89,10 +89,10 @@ func TestValidator(t *testing.T) {
 	require.NoError(t, err)
 
 	tests := []struct {
-		name      string
-		token     string
-		wantSub   string
-		wantErr   bool
+		name    string
+		token   string
+		wantSub string
+		wantErr bool
 	}{
 		{
 			name:    "valid jwt",