feat: admin-editable success + waiting list messages for MC and Open Day

src/app/admin/master-classes/page.tsx

@@ -525,6 +525,14 @@ export default function MasterClassesEditorPage() {
             placeholder="Вы записаны! Мы свяжемся с вами"
           />
 
+          <TextareaField
+            label="Текст для листа ожидания"
+            value={data.waitingListText || ""}
+            onChange={(v) => update({ ...data, waitingListText: v || undefined })}
+            placeholder="Все места заняты, но мы добавили вас в лист ожидания..."
+            rows={2}
+          />
+
           <ArrayEditor
             label="Мастер-классы"
             items={data.items}

src/app/admin/open-day/page.tsx

@@ -19,6 +19,8 @@ interface OpenDayEvent {
   discountThreshold: number;
   minBookings: number;
   maxParticipants: number;
+  successMessage?: string;
+  waitingListText?: string;
   active: boolean;
 }
 
@@ -100,6 +102,29 @@ function EventSettings({
         />
       </div>
 
+      <div className="grid gap-4 sm:grid-cols-2">
+        <div>
+          <label className="block text-sm text-neutral-400 mb-1.5">Текст после записи</label>
+          <textarea
+            value={event.successMessage || ""}
+            onChange={(e) => onChange({ successMessage: e.target.value || undefined })}
+            rows={2}
+            className="w-full rounded-lg border border-white/10 bg-neutral-800 px-4 py-2.5 text-white placeholder-neutral-500 outline-none focus:border-gold transition-colors resize-none"
+            placeholder="Вы записаны!"
+          />
+        </div>
+        <div>
+          <label className="block text-sm text-neutral-400 mb-1.5">Текст для листа ожидания</label>
+          <textarea
+            value={event.waitingListText || ""}
+            onChange={(e) => onChange({ waitingListText: e.target.value || undefined })}
+            rows={2}
+            className="w-full rounded-lg border border-white/10 bg-neutral-800 px-4 py-2.5 text-white placeholder-neutral-500 outline-none focus:border-gold transition-colors resize-none"
+            placeholder="Все места заняты, но мы добавили вас в лист ожидания..."
+          />
+        </div>
+      </div>
+
       <div>
         <label className="block text-sm text-neutral-400 mb-1.5">Цена за занятие (BYN)</label>
         <input

src/components/sections/MasterClasses.tsx

@@ -279,6 +279,7 @@ export function MasterClasses({ data, regCounts = {} }: MasterClassesProps) {
         endpoint="/api/master-class-register"
         extraBody={{ masterClassTitle: signupTitle }}
         successMessage={data.successMessage}
+        waitingMessage={data.waitingListText}
       />
     </section>
   );

src/components/sections/OpenDay.tsx

@@ -132,6 +132,8 @@ export function OpenDay({ data }: OpenDayProps) {
           subtitle={signup.label}
           endpoint="/api/open-day-register"
           extraBody={{ classId: signup.classId, eventId: event.id }}
+          successMessage={event.successMessage}
+          waitingMessage={event.waitingListText}
         />
       )}
     </section>

src/components/ui/SignupModal.tsx

@@ -16,6 +16,8 @@ interface SignupModalProps {
   extraBody?: Record<string, unknown>;
   /** Custom success message */
   successMessage?: string;
+  /** Custom waiting list message */
+  waitingMessage?: string;
   /** Callback with API response data on success */
   onSuccess?: (data: Record<string, unknown>) => void;
 }
@@ -28,6 +30,7 @@ export function SignupModal({
   endpoint,
   extraBody,
   successMessage,
+  waitingMessage,
   onSuccess,
 }: SignupModalProps) {
   const [name, setName] = useState("");
@@ -154,10 +157,8 @@ export function SignupModal({
                   <CheckCircle size={28} className="text-amber-500" />
                 </div>
                 <h3 className="text-lg font-bold text-white">Вы в листе ожидания</h3>
-                <p className="mt-2 text-sm text-neutral-400 leading-relaxed">
+                <p className="mt-2 text-sm text-neutral-400 leading-relaxed whitespace-pre-line">
-                  Все места заняты, но мы добавили вас в лист ожидания.
+                  {waitingMessage || "Все места заняты, но мы добавили вас в лист ожидания.\nЕсли кто-то откажется — мы предложим место вам."}
-                  <br />
-                  Если кто-то откажется — мы предложим место вам.
                 </p>
                 <a
                   href={BRAND.instagram}

src/lib/db.ts

@@ -275,6 +275,19 @@ const migrations: Migration[] = [
       }
     },
   },
+  {
+    version: 16,
+    name: "add_messages_to_open_day_events",
+    up: (db) => {
+      const cols = db.prepare("PRAGMA table_info(open_day_events)").all() as { name: string }[];
+      if (!cols.some((c) => c.name === "success_message")) {
+        db.exec("ALTER TABLE open_day_events ADD COLUMN success_message TEXT");
+      }
+      if (!cols.some((c) => c.name === "waiting_list_text")) {
+        db.exec("ALTER TABLE open_day_events ADD COLUMN waiting_list_text TEXT");
+      }
+    },
+  },
 ];
 
 function runMigrations(db: Database.Database) {
@@ -969,6 +982,8 @@ interface OpenDayEventRow {
   discount_threshold: number;
   min_bookings: number;
   max_participants: number;
+  success_message: string | null;
+  waiting_list_text: string | null;
   active: number;
   created_at: string;
   updated_at: string;
@@ -984,6 +999,8 @@ export interface OpenDayEvent {
   discountThreshold: number;
   minBookings: number;
   maxParticipants: number;
+  successMessage?: string;
+  waitingListText?: string;
   active: boolean;
 }
 
@@ -1064,6 +1081,8 @@ function mapEventRow(r: OpenDayEventRow): OpenDayEvent {
     discountThreshold: r.discount_threshold,
     minBookings: r.min_bookings,
     maxParticipants: r.max_participants ?? 0,
+    successMessage: r.success_message ?? undefined,
+    waitingListText: r.waiting_list_text ?? undefined,
     active: !!r.active,
   };
 }
@@ -1174,6 +1193,8 @@ export function updateOpenDayEvent(
     discountThreshold: number;
     minBookings: number;
     maxParticipants: number;
+    successMessage: string;
+    waitingListText: string;
     active: boolean;
   }>
 ): void {
@@ -1188,6 +1209,8 @@ export function updateOpenDayEvent(
   if (data.discountThreshold !== undefined) { sets.push("discount_threshold = ?"); vals.push(data.discountThreshold); }
   if (data.minBookings !== undefined) { sets.push("min_bookings = ?"); vals.push(data.minBookings); }
   if (data.maxParticipants !== undefined) { sets.push("max_participants = ?"); vals.push(data.maxParticipants); }
+  if (data.successMessage !== undefined) { sets.push("success_message = ?"); vals.push(data.successMessage || null); }
+  if (data.waitingListText !== undefined) { sets.push("waiting_list_text = ?"); vals.push(data.waitingListText || null); }
   if (data.active !== undefined) { sets.push("active = ?"); vals.push(data.active ? 1 : 0); }
   if (sets.length === 0) return;
   sets.push("updated_at = datetime('now')");

src/types/content.ts

@@ -148,6 +148,7 @@ export interface SiteContent {
   masterClasses: {
     title: string;
     successMessage?: string;
+    waitingListText?: string;
     items: MasterClassItem[];
   };
   schedule: {