chore(fmt): repo-wide gofmt -w sweep — close drift surfaced by ci-pipeline-cleanup Phase 4

Mechanical reformat. The new 'gofmt drift' CI step (added in
ci-pipeline-cleanup Phase 4, commit 0f205a8) surfaced 111 files
with accumulated gofmt drift across cmd/, internal/, and deploy/test/.

Each file's diff is gofmt-standard: whitespace adjustments, intra-
group import sorting (alphabetical by import path within blank-line-
separated groups), and struct-tag column alignment. No semantic
changes — verified via 'git diff --ignore-all-space' which shows only
the line-position deltas from import reordering.

The gate stays in place after this commit. Going forward it catches
gofmt drift at PR time.

internal/connector/target/k8ssecret/k8ssecret_test.go

@@ -93,7 +93,7 @@ func (m *mockK8sClient) DeleteSecret(ctx context.Context, namespace, name string
 
 func TestValidateConfig_Success_MinimalConfig(t *testing.T) {
 	cfg := map[string]interface{}{
-		"namespace":  "default",
+		"namespace":   "default",
 		"secret_name": "my-cert",
 	}
 
@@ -644,4 +644,3 @@ func contains(s, substr string) bool {
 	}
 	return false
 }
-