Enroll modal: days input instead of date; hide bundle if base course owned

- Quick-enroll modal now takes access duration in days (0/empty = unlimited)
  and shows the computed expiry date, instead of a manual date picker.
- Dashboard upsell no longer shows the "Всё включено" bundle of a course
  the student already owns in its base edition (obsidian/zotero).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/app/(student)/dashboard/page.tsx

@@ -57,11 +57,20 @@ export default async function StudentDashboard() {
 
   // Витрина: продаваемые курсы, которых у студента нет → заблюренные карточки
   const enrolledSlugs = new Set(enrollments.map((e) => e.course.slug));
+  // Не показываем «Всё включено», если у студента уже есть обычная версия того же курса
+  const SUPPRESS_IF_OWNED: Record<string, string> = {
+    "obsidian-full": "obsidian", // ВВ Obsidian 2025 ← обычный Obsidian 2025
+    "zotero-full": "zotero", // ВВ Zotero ← обычный Zotero
+  };
   const storeCourses = await prisma.course.findMany({
     where: { slug: { in: Object.keys(STORE_LINKS) }, published: true },
     select: { id: true, slug: true, title: true, description: true, coverImage: true },
   });
-  const locked = storeCourses.filter((c) => !enrolledSlugs.has(c.slug));
+  const locked = storeCourses.filter(
+    (c) =>
+      !enrolledSlugs.has(c.slug) &&
+      !(SUPPRESS_IF_OWNED[c.slug] && enrolledSlugs.has(SUPPRESS_IF_OWNED[c.slug]))
+  );
 
   return (
     <main className="max-w-5xl mx-auto px-6 py-10 w-full">

src/components/admin/quick-enroll-modal.tsx

@@ -18,7 +18,7 @@ export function QuickEnrollButton({ userId, userName }: Props) {
   const [courses, setCourses] = useState<Course[]>([]);
   const [loadingCourses, setLoadingCourses] = useState(false);
   const [courseId, setCourseId] = useState("");
-  const [expiresAt, setExpiresAt] = useState("");
+  const [days, setDays] = useState("");
   const [status, setStatus] = useState<"idle" | "success" | "error">("idle");
   const [errorMsg, setErrorMsg] = useState("");
   const [pending, startTransition] = useTransition();
@@ -49,7 +49,7 @@ export function QuickEnrollButton({ userId, userName }: Props) {
   function handleOpen() {
     setStatus("idle");
     setErrorMsg("");
-    setExpiresAt("");
+    setDays("");
     setCourseId("");
     setOpen(true);
   }
@@ -61,7 +61,9 @@ export function QuickEnrollButton({ userId, userName }: Props) {
 
   function handleSubmit() {
     if (!courseId) return;
-    const expiry = expiresAt ? new Date(expiresAt) : null;
+    // Количество дней доступа: 0 или пусто → бессрочно (null)
+    const d = parseInt(days, 10);
+    const expiry = !isNaN(d) && d > 0 ? new Date(Date.now() + d * 86400000) : null;
     startTransition(async () => {
       const result = await grantCourseAccess(userId, courseId, expiry);
       if ("error" in result) {
@@ -178,25 +180,28 @@ export function QuickEnrollButton({ userId, userName }: Props) {
               )}
             </div>
 
-            {/* Expiry date (optional) */}
+            {/* Срок доступа в днях */}
             <div>
               <label
                 className="block text-xs font-bold uppercase tracking-widest mb-1.5"
                 style={{ color: "var(--muted-foreground)" }}
               >
-                Срок доступа (необязательно)
+                Срок доступа, дней
               </label>
               <input
-                type="date"
-                value={expiresAt}
-                onChange={(e) => setExpiresAt(e.target.value)}
+                type="number"
+                min={0}
+                step={1}
+                inputMode="numeric"
+                value={days}
+                onChange={(e) => setDays(e.target.value)}
                 disabled={pending}
-                min={new Date().toISOString().slice(0, 10)}
+                placeholder="0"
                 style={{
                   width: "100%",
                   border: "2px solid var(--border)",
                   background: "var(--background)",
-                  color: expiresAt ? "var(--foreground)" : "var(--muted-foreground)",
+                  color: days ? "var(--foreground)" : "var(--muted-foreground)",
                   padding: "0.4rem 0.5rem",
                   fontSize: "13px",
                   fontFamily: "inherit",
@@ -206,7 +211,14 @@ export function QuickEnrollButton({ userId, userName }: Props) {
                 onBlur={(e) => (e.currentTarget.style.borderColor = "var(--border)")}
               />
               <p className="text-xs mt-1" style={{ color: "var(--muted-foreground)" }}>
-                Оставьте пустым для бессрочного доступа
+                {(() => {
+                  const d = parseInt(days, 10);
+                  if (!isNaN(d) && d > 0) {
+                    const until = new Date(Date.now() + d * 86400000).toLocaleDateString("ru-RU");
+                    return `Доступ до ${until} (${d} дн.)`;
+                  }
+                  return "0 или пусто — бессрочный доступ";
+                })()}
               </p>
             </div>