fix(build): make build-web works; gofmt all Go files

internal/push/handlers.go

@@ -183,8 +183,6 @@ func (h *Handler) SendPush(ctx context.Context, userID string, payload map[strin
 	}
 }
 
-
-
 // SendChannelNotification sends a push notification to all server members (except the author)
 // when a new message is posted in a channel.
 func (h *Handler) SendChannelNotification(ctx context.Context, channelID, authorID, channelName, content string) {
@@ -254,6 +252,7 @@ func (h *Handler) SendChannelNotification(ctx context.Context, channelID, author
 		}
 	}
 }
+
 // GenerateVAPIDKeys generates a new VAPID key pair.
 func GenerateVAPIDKeys() (publicKey, privateKey string, err error) {
 	privateKeyBytes := make([]byte, 32)