style: run gofmt -s across all Go files

Fixes Go Report Card gofmt score from 52% to 100%.
Pure formatting changes — no logic modifications.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

internal/connector/notifier/interface.go

@@ -20,14 +20,14 @@ type Connector interface {
 
 // Alert represents a notification alert with urgency.
 type Alert struct {
-	ID          string            `json:"id"`
-	Type        string            `json:"type"`
-	Severity    string            `json:"severity"`
-	Subject     string            `json:"subject"`
-	Message     string            `json:"message"`
-	Recipient   string            `json:"recipient"`
-	Metadata    map[string]string `json:"metadata,omitempty"`
-	CreatedAt   time.Time         `json:"created_at"`
+	ID        string            `json:"id"`
+	Type      string            `json:"type"`
+	Severity  string            `json:"severity"`
+	Subject   string            `json:"subject"`
+	Message   string            `json:"message"`
+	Recipient string            `json:"recipient"`
+	Metadata  map[string]string `json:"metadata,omitempty"`
+	CreatedAt time.Time         `json:"created_at"`
 }
 
 // Event represents a notification event with contextual information.

internal/connector/notifier/webhook/webhook.go

@@ -89,14 +89,14 @@ func (c *Connector) SendAlert(ctx context.Context, alert notifier.Alert) error {
 
 	// Format payload
 	payload := map[string]interface{}{
-		"type":      "alert",
-		"alert_id":  alert.ID,
-		"severity":  alert.Severity,
-		"subject":   alert.Subject,
-		"message":   alert.Message,
-		"recipient": alert.Recipient,
+		"type":       "alert",
+		"alert_id":   alert.ID,
+		"severity":   alert.Severity,
+		"subject":    alert.Subject,
+		"message":    alert.Message,
+		"recipient":  alert.Recipient,
 		"created_at": alert.CreatedAt,
-		"metadata":  alert.Metadata,
+		"metadata":   alert.Metadata,
 	}
 
 	if err := c.postWebhook(ctx, payload); err != nil {