feat: add preview management, channel controls, invite polish, and recovery

- Auto-extract preview images from ZIP/RAR/7z archives during ingestion
- Upload custom preview images via package drawer
- Select preview from archive contents with on-demand extraction UI
- Manually add Telegram channels by t.me link, username, or invite link
- Invite code UX: bulk create, copy link, usage tracking, delete confirm
- Incomplete upload recovery: verify dest messages on worker startup
- Rebuild package DB by scanning destination channel with live progress

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/app/(app)/invites/actions.ts

@@ -33,6 +33,45 @@ export async function createInviteCode(input: {
   return { success: true, data: { code } };
 }
 
+export async function createBulkInviteCodes(input: {
+  count: number;
+  maxUses: number;
+  expiresInDays: number | null;
+}): Promise<ActionResult<{ codes: string[] }>> {
+  const session = await auth();
+  if (!session?.user?.id || session.user.role !== "ADMIN") {
+    return { success: false, error: "Unauthorized" };
+  }
+
+  if (input.count < 1 || input.count > 25) {
+    return { success: false, error: "Can generate between 1 and 25 codes at a time" };
+  }
+
+  const expiresAt = input.expiresInDays
+    ? new Date(Date.now() + input.expiresInDays * 24 * 60 * 60 * 1000)
+    : null;
+
+  const codes: string[] = [];
+
+  await prisma.$transaction(async (tx) => {
+    for (let i = 0; i < input.count; i++) {
+      const code = crypto.randomBytes(6).toString("hex");
+      codes.push(code);
+      await tx.inviteCode.create({
+        data: {
+          code,
+          maxUses: input.maxUses,
+          expiresAt,
+          createdBy: session.user.id,
+        },
+      });
+    }
+  });
+
+  revalidatePath("/invites");
+  return { success: true, data: { codes } };
+}
+
 export async function deleteInviteCode(id: string): Promise<ActionResult> {
   const session = await auth();
   if (!session?.user?.id || session.user.role !== "ADMIN") {
@@ -48,7 +87,10 @@ export async function deleteInviteCode(id: string): Promise<ActionResult> {
 export async function getInviteCodes() {
   const codes = await prisma.inviteCode.findMany({
     orderBy: { createdAt: "desc" },
-    include: { creator: { select: { name: true } } },
+    include: {
+      creator: { select: { name: true } },
+      usedBy: { select: { id: true, name: true, email: true, createdAt: true } },
+    },
   });
   return codes;
 }