feat: fix channel scanning bugs, add package tags, and kickstarters tab

Bug fixes:
- Fix channels not being scanned by paginating TDLib getChats (was only
  loading first batch, additional channels were unknown to TDLib)
- Add per-channel getChat pre-load as safety net before scanning
- Fix preview pictures not loading by checking previewData instead of
  previewMsgId for hasPreview flag
- Prevent previewMsgId from being set when preview download fails

Package Tags:
- Add tags Text[] column to Package with migration backfilling from
  channel categories
- Worker auto-inherits source channel category as initial tag
- Tag filter dropdown and Tags column in STL Files table
- Server actions for individual and bulk tag editing

Kickstarters Tab:
- New KickstarterHost, Kickstarter, and KickstarterPackage models
- Full CRUD with delivery status, payment status, host management
- Package linking (many-to-many with existing packages)
- Sidebar entry with Gift icon
- Table with search, filters, modal forms

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

prisma/migrations/20260323000000_add_package_tags/migration.sql

@@ -0,0 +1,10 @@
+-- Add tags array column to packages
+ALTER TABLE "packages" ADD COLUMN "tags" TEXT[] NOT NULL DEFAULT '{}';
+
+-- Backfill: inherit source channel category as initial tag
+UPDATE "packages" p
+SET "tags" = ARRAY[c."category"]
+FROM "telegram_channels" c
+WHERE p."sourceChannelId" = c."id"
+  AND c."category" IS NOT NULL
+  AND c."category" != '';

prisma/migrations/20260323010000_add_kickstarters/migration.sql

@@ -0,0 +1,50 @@
+-- CreateEnum
+CREATE TYPE "DeliveryStatus" AS ENUM ('NOT_DELIVERED', 'PARTIAL', 'DELIVERED');
+CREATE TYPE "PaymentStatus" AS ENUM ('PAID', 'UNPAID');
+
+-- CreateTable
+CREATE TABLE "kickstarter_hosts" (
+    "id" TEXT NOT NULL,
+    "name" TEXT NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "kickstarter_hosts_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "kickstarters" (
+    "id" TEXT NOT NULL,
+    "name" TEXT NOT NULL,
+    "link" TEXT,
+    "filesUrl" TEXT,
+    "deliveryStatus" "DeliveryStatus" NOT NULL DEFAULT 'NOT_DELIVERED',
+    "paymentStatus" "PaymentStatus" NOT NULL DEFAULT 'UNPAID',
+    "notes" TEXT,
+    "hostId" TEXT,
+    "userId" TEXT NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "kickstarters_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "kickstarter_packages" (
+    "kickstarterId" TEXT NOT NULL,
+    "packageId" TEXT NOT NULL,
+
+    CONSTRAINT "kickstarter_packages_pkey" PRIMARY KEY ("kickstarterId","packageId")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "kickstarter_hosts_name_key" ON "kickstarter_hosts"("name");
+CREATE INDEX "kickstarters_hostId_idx" ON "kickstarters"("hostId");
+CREATE INDEX "kickstarters_userId_idx" ON "kickstarters"("userId");
+CREATE INDEX "kickstarters_deliveryStatus_idx" ON "kickstarters"("deliveryStatus");
+CREATE INDEX "kickstarters_paymentStatus_idx" ON "kickstarters"("paymentStatus");
+
+-- AddForeignKey
+ALTER TABLE "kickstarters" ADD CONSTRAINT "kickstarters_hostId_fkey" FOREIGN KEY ("hostId") REFERENCES "kickstarter_hosts"("id") ON DELETE SET NULL ON UPDATE CASCADE;
+ALTER TABLE "kickstarters" ADD CONSTRAINT "kickstarters_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+ALTER TABLE "kickstarter_packages" ADD CONSTRAINT "kickstarter_packages_kickstarterId_fkey" FOREIGN KEY ("kickstarterId") REFERENCES "kickstarters"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+ALTER TABLE "kickstarter_packages" ADD CONSTRAINT "kickstarter_packages_packageId_fkey" FOREIGN KEY ("packageId") REFERENCES "packages"("id") ON DELETE CASCADE ON UPDATE CASCADE;

prisma/schema.prisma

@@ -38,6 +38,7 @@ model User {
   tags         Tag[]
   settings     UserSettings?
   telegramLink TelegramLink?
+  kickstarters Kickstarter[]
   inviteCodes  InviteCode[]   @relation("InviteCreator")
   usedInvite   InviteCode?    @relation("InviteUser", fields: [usedInviteId], references: [id], onDelete: SetNull)
   usedInviteId String?
@@ -468,6 +469,7 @@ model Package {
   isMultipart     Boolean     @default(false)
   partCount       Int         @default(1)
   fileCount       Int         @default(0)
+  tags            String[]    @default([])
   previewData     Bytes?      // JPEG thumbnail from nearby Telegram photo (stored as raw bytes)
   previewMsgId    BigInt?     // Telegram message ID of the matched photo
   indexedAt        DateTime   @default(now())
@@ -477,8 +479,9 @@ model Package {
   files           PackageFile[]
   ingestionRun    IngestionRun?        @relation(fields: [ingestionRunId], references: [id])
   ingestionRunId  String?
-  sendRequests    BotSendRequest[]
-  extractRequests ArchiveExtractRequest[]
+  sendRequests      BotSendRequest[]
+  extractRequests   ArchiveExtractRequest[]
+  kickstarterLinks  KickstarterPackage[]
 
   @@index([sourceChannelId])
   @@index([destChannelId])
@@ -682,3 +685,63 @@ model ArchiveExtractRequest {
   @@index([status])
   @@map("archive_extract_requests")
 }
+
+// ───────────────────────────────────────
+// Purchased Kickstarters
+// ───────────────────────────────────────
+
+enum DeliveryStatus {
+  NOT_DELIVERED
+  PARTIAL
+  DELIVERED
+}
+
+enum PaymentStatus {
+  PAID
+  UNPAID
+}
+
+model KickstarterHost {
+  id           String        @id @default(cuid())
+  name         String        @unique
+  createdAt    DateTime      @default(now())
+
+  kickstarters Kickstarter[]
+
+  @@map("kickstarter_hosts")
+}
+
+model Kickstarter {
+  id              String          @id @default(cuid())
+  name            String
+  link            String?
+  filesUrl        String?
+  deliveryStatus  DeliveryStatus  @default(NOT_DELIVERED)
+  paymentStatus   PaymentStatus   @default(UNPAID)
+  notes           String?
+  hostId          String?
+  userId          String
+  createdAt       DateTime        @default(now())
+  updatedAt       DateTime        @updatedAt
+
+  host     KickstarterHost?     @relation(fields: [hostId], references: [id], onDelete: SetNull)
+  user     User                 @relation(fields: [userId], references: [id], onDelete: Cascade)
+  packages KickstarterPackage[]
+
+  @@index([hostId])
+  @@index([userId])
+  @@index([deliveryStatus])
+  @@index([paymentStatus])
+  @@map("kickstarters")
+}
+
+model KickstarterPackage {
+  kickstarterId String
+  packageId     String
+
+  kickstarter Kickstarter @relation(fields: [kickstarterId], references: [id], onDelete: Cascade)
+  package     Package     @relation(fields: [packageId], references: [id], onDelete: Cascade)
+
+  @@id([kickstarterId, packageId])
+  @@map("kickstarter_packages")
+}