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/notifier/email/email_test.go

@@ -88,11 +88,11 @@ func TestEmail_ValidateConfig_MissingPort(t *testing.T) {
 
 func TestEmail_ValidateConfig_MissingFromAddress(t *testing.T) {
 	cfg := &Config{
-		SMTPHost:   "smtp.example.com",
-		SMTPPort:   587,
-		Username:   "user",
-		Password:   "pass",
-		UseTLS:     true,
+		SMTPHost: "smtp.example.com",
+		SMTPPort: 587,
+		Username: "user",
+		Password: "pass",
+		UseTLS:   true,
 	}
 
 	rawConfig, _ := json.Marshal(cfg)