hub: F-15 instant reset codes — reset-request response carries the rotated {code_hash, generation, issued_at} (same shape/guarantee as the report ACK); claim-resent flash now states the operator-resend ACK lag

Claude-Session: https://claude.ai/code/session_01GzammAMzsJTgpQHqxwM2bC

hub/internal/web/templates/customer_unified.html

@@ -51,6 +51,8 @@
             {{else if eq .Flash "blocked"}}Customer blocked — hidden from Dashboard.
             {{else if eq .Flash "unblocked"}}Customer unblocked — visible on Dashboard again.
             {{else if eq .Flash "log_tail_requested"}}Log tail requested — the controller delivers it on its next report cycle (a few minutes). A customer-visible event line was recorded.
+            {{else if eq .Flash "claim-resent"}}Code re-sent to the registered address. A kód a doboz következő jelentésekor (~15 percen belül) aktiválódik.
+            {{else if eq .Flash "claim-resend-failed"}}Claim code resend FAILED — check the hub log (email delivery / send error).
             {{end}}
         </div>
         {{end}}