scan-flow: geolocation scan, location-aware SMS throttle (log sender), finder contact, sms_enabled toggle, branding — 19/19 phase-2 scenarios pass

frontend/internal/sms/smslog.go

@@ -0,0 +1,13 @@
+package sms
+
+import "log"
+
+// LogSender writes messages to the log instead of sending.
+// Used automatically when no SMS credentials are configured.
+type LogSender struct{}
+
+// Send logs the would-be SMS.
+func (LogSender) Send(to, body string) error {
+	log.Printf("SMS to %s: %s", to, body)
+	return nil
+}