Promo: order page + red banner + contact form; fix admin login rehash

- /order page: single tag $5.50 / 10-pack $22.00 (GST-incl), qty via
  Stripe Payment Links (single 1-25, pack 1-2), thanks state
- Red 'Protect & recover your valuables — ORDER NOW' banner in base layout
  (every page incl. found-dog tag page) + footer promo links
- Contact page: form -> Gmail SMTP (env SMTP_*), hello@where-woof.com
- Fix admin login 500: User.getAuthPasswordName() = password_hash so
  Laravel 13 rehash-on-login writes the correct column (was trying
  UPDATE users SET password = ...)

frontend/internal/handlers/handlers.go

@@ -58,6 +58,7 @@ func LoadTemplates() (Templates, error) {
 		"about":    {dir + "/about.html"},
 		"what":     {dir + "/what.html"},
 		"contact":  {dir + "/contact.html"},
+		"order":     {dir + "/order.html"},
 		"register": {dir + "/register.html"},
 		"login":    {dir + "/login.html"},
 		"account":  {dir + "/account.html", dir + "/account-panel.html", dir + "/tag-list.html", dir + "/tag-edit-inline.html"},