R-302: the abandon banner promises only what the box can still see is true

The retrieval clause rendered unconditionally on every page and is false on a
reachable state - the same screen where the orphan card says we cannot tell.

The condition is a fingerprint PINNED at the decision, not a comparison against
the current key. The obvious proxy asks about the wrong key: the set-aside
copies were written under an older key the box no longer has, so on a
twice-rebuilt box the proxy promises about copies nothing can open. Demonstrated
- under the proxy, the replaced-package and legacy cases both flip back to
promising.

The pin is a recorded assumption and says so: nothing on the box records which
key wrote those copies. Empty is not a match. A countdown started before this
carries no pin and takes the cautious branch, not a backfill.

A sweep of all 36 templates found a fourth instance (backups page, same
condition applied) and a fifth (the confirmation screen, correctly left alone -
true at the moment of the decision).

New retrieval_promise_gate registers each claim with a reason rather than
banning a verb: a string ban failed twice, and the honest replacement copy
contains the stem.

controller/internal/web/templates/backups_remote.html

@@ -188,9 +188,14 @@
     <div class="card" style="border-left:3px solid var(--warn);margin:.75rem 0;padding:.75rem 1rem">
         <p style="margin:0 0 .35rem"><strong>A korábbi mentések törlése folyamatban</strong></p>
         <p class="form-hint" style="margin:0 0 .5rem">
+            {{/* R-302: the FOURTH instance of the retrieval promise, under a different verb than the
+                 banner's — which is why no earlier guard counted it. Same condition, same single
+                 derivation: fixing the strip above and not this would leave one page contradicting the
+                 other. The deletion and its date are certain and always render. */}}
             A kérésed szerint a korábbi távoli mentéseidet <strong>{{.AbandonDate}}</strong> napján véglegesen töröljük
-            (még <strong>{{.AbandonDaysLeft}} nap</strong>). Addig meggondolhatod magad: ha megvan a helyreállítási kódod,
-            a mentéseid visszaszerezhetők, és a törlés elmarad.
+            (még <strong>{{.AbandonDaysLeft}} nap</strong>).
+            {{if .AbandonRetrievalOffered}}Addig meggondolhatod magad: ha megvan a helyreállítási kódod,
+            a mentéseid visszaszerezhetők, és a törlés elmarad.{{else}}Hogy ezek még visszaszerezhetők-e a helyreállítási kóddal, azt innen nem tudjuk megállapítani — ha vissza szeretnéd kapni őket, <strong>írj nekünk a törlés előtt</strong>.{{end}}
         </p>
         <a href="/recovery" class="btn btn-sm btn-primary">Mégis visszaszerzem a kóddal</a>
     </div>