fix(offer-editor): fix category bug, add ripristina, always-saveable

- Bug: remove server-side category pre-filter from getOfferEditorData;
  services now loaded unfiltered, client-side filter handles display →
  changing category no longer wipes the service list
- Fix tierTotals to use full service map (not filtered subset) so totals
  stay correct when category is edited mid-session
- Add Ripristina button for archived offers (calls toggleOfferArchived false)
- Remove canSave gate: always allow saving; button is "Salva Bozza"
  (secondary style, stays on page) when no services assigned, "Salva
  Offerta" (primary, redirects to list) when at least one tier has services
- Show "Bozza salvata." inline feedback after draft save

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/components/admin/offers/OfferEditorClient.tsx

@@ -92,6 +92,7 @@ export function OfferEditorClient({
   const [obiettivoOptions, setObiettivoOptions] = useState<string[]>(fieldOptions.obiettivo);
 
   const [initialArchived] = useState<boolean>(data.macro.is_archived);
+  const [savedDraft, setSavedDraft] = useState(false);
 
   const filteredServices = useMemo(() => {
     return macro.category
@@ -99,16 +100,22 @@ export function OfferEditorClient({
       : data.availableServices;
   }, [macro.category, data.availableServices]);
 
+  // Totals use the full catalog (not filtered) so changing category doesn't zero them.
+  const serviceById = useMemo(
+    () => new Map(data.availableServices.map((s) => [s.id, s])),
+    [data.availableServices]
+  );
+
   const tierTotals = useMemo(() => {
     return tiers.map((tier) =>
       tier.assignedServiceIds.reduce((sum, id) => {
-        const service = filteredServices.find((s) => s.id === id);
+        const service = serviceById.get(id);
         return sum + Number(service?.unit_price ?? 0);
       }, 0)
     );
-  }, [tiers, filteredServices]);
+  }, [tiers, serviceById]);
 
-  const canSave = tiers.some((t) => t.assignedServiceIds.length > 0);
+  const isDraft = !tiers.some((t) => t.assignedServiceIds.length > 0);
 
   function updateMacro<K extends keyof MacroFields>(key: K, value: MacroFields[K]) {
     setMacro((prev) => ({ ...prev, [key]: value }));
@@ -164,7 +171,12 @@ export function OfferEditorClient({
     startTransition(async () => {
       try {
         await saveOfferEditor(data.macro.id, payload);
-        router.push("/admin/offers");
+        if (isDraft) {
+          setSavedDraft(true);
+          router.refresh();
+        } else {
+          router.push("/admin/offers");
+        }
       } catch {
         setSaveError("Errore nel salvataggio. Verifica i campi.");
       }
@@ -183,6 +195,18 @@ export function OfferEditorClient({
     });
   }
 
+  function handleRestore() {
+    if (!window.confirm("Ripristinare l'offerta? Tornerà visibile nella lista.")) return;
+    startTransition(async () => {
+      try {
+        await toggleOfferArchived(data.macro.id, false);
+        router.push("/admin/offers");
+      } catch {
+        setSaveError("Errore nel salvataggio. Verifica i campi.");
+      }
+    });
+  }
+
   function handleRenameCategoria(oldValue: string, newValue: string) {
     setCategoriaOptions((prev) => prev.map((o) => (o === oldValue ? newValue : o)));
     if (macro.category === oldValue) updateMacro("category", newValue);
@@ -468,16 +492,29 @@ export function OfferEditorClient({
 
       {/* Action buttons */}
       {saveError && <p className="text-sm text-red-600">{saveError}</p>}
+      {savedDraft && !saveError && (
+        <p className="text-sm text-[#1A463C]">Bozza salvata.</p>
+      )}
       <div className="flex items-center gap-2">
-        <button
-          type="button"
-          onClick={handleSave}
-          disabled={!canSave || isPending}
-          title={!canSave ? "Seleziona almeno un servizio" : undefined}
-          className="bg-[#1A463C] text-white text-sm font-semibold px-6 py-4 rounded disabled:opacity-50 disabled:cursor-not-allowed hover:bg-[#163a31] transition-colors duration-150"
-        >
-          Salva Offerta
-        </button>
+        {isDraft ? (
+          <button
+            type="button"
+            onClick={handleSave}
+            disabled={isPending}
+            className="border border-[#e5e7eb] text-[#1a1a1a] text-sm font-semibold px-6 py-4 rounded disabled:opacity-50 disabled:cursor-not-allowed hover:bg-[#f9f9f9] transition-colors duration-150"
+          >
+            Salva Bozza
+          </button>
+        ) : (
+          <button
+            type="button"
+            onClick={handleSave}
+            disabled={isPending}
+            className="bg-[#1A463C] text-white text-sm font-semibold px-6 py-4 rounded disabled:opacity-50 disabled:cursor-not-allowed hover:bg-[#163a31] transition-colors duration-150"
+          >
+            Salva Offerta
+          </button>
+        )}
         <Link
           href="/admin/offers"
           className="border border-[#e5e7eb] text-[#1a1a1a] text-sm font-semibold px-6 py-4 rounded hover:bg-[#f9f9f9] transition-colors duration-150"
@@ -494,6 +531,16 @@ export function OfferEditorClient({
             Archivia
           </button>
         )}
+        {initialArchived && (
+          <button
+            type="button"
+            onClick={handleRestore}
+            disabled={isPending}
+            className="text-[#1A463C] text-sm font-semibold px-6 py-4 rounded hover:bg-[#f0f7f4] transition-colors duration-150 disabled:opacity-50"
+          >
+            Ripristina
+          </button>
+        )}
       </div>
     </div>
   );