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>

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

@@ -0,0 +1,148 @@
+"use server";
+
+import { auth } from "@/lib/auth";
+import { prisma } from "@/lib/prisma";
+import { kickstarterSchema, kickstarterHostSchema } from "@/schemas/kickstarter.schema";
+import { revalidatePath } from "next/cache";
+import type { ActionResult } from "@/types/api.types";
+
+const REVALIDATE_PATH = "/kickstarters";
+
+export async function createKickstarter(
+  input: unknown
+): Promise<ActionResult<{ id: string }>> {
+  const session = await auth();
+  if (!session?.user?.id) return { success: false, error: "Unauthorized" };
+
+  const parsed = kickstarterSchema.safeParse(input);
+  if (!parsed.success) return { success: false, error: "Validation failed" };
+
+  try {
+    const ks = await prisma.kickstarter.create({
+      data: {
+        name: parsed.data.name,
+        link: parsed.data.link || null,
+        filesUrl: parsed.data.filesUrl || null,
+        deliveryStatus: parsed.data.deliveryStatus,
+        paymentStatus: parsed.data.paymentStatus,
+        hostId: parsed.data.hostId || null,
+        notes: parsed.data.notes || null,
+        userId: session.user.id,
+      },
+    });
+    revalidatePath(REVALIDATE_PATH);
+    return { success: true, data: { id: ks.id } };
+  } catch {
+    return { success: false, error: "Failed to create kickstarter" };
+  }
+}
+
+export async function updateKickstarter(
+  id: string,
+  input: unknown
+): Promise<ActionResult> {
+  const session = await auth();
+  if (!session?.user?.id) return { success: false, error: "Unauthorized" };
+
+  const parsed = kickstarterSchema.safeParse(input);
+  if (!parsed.success) return { success: false, error: "Validation failed" };
+
+  const existing = await prisma.kickstarter.findFirst({
+    where: { id, userId: session.user.id },
+  });
+  if (!existing) return { success: false, error: "Not found" };
+
+  try {
+    await prisma.kickstarter.update({
+      where: { id },
+      data: {
+        name: parsed.data.name,
+        link: parsed.data.link || null,
+        filesUrl: parsed.data.filesUrl || null,
+        deliveryStatus: parsed.data.deliveryStatus,
+        paymentStatus: parsed.data.paymentStatus,
+        hostId: parsed.data.hostId || null,
+        notes: parsed.data.notes || null,
+      },
+    });
+    revalidatePath(REVALIDATE_PATH);
+    return { success: true, data: undefined };
+  } catch {
+    return { success: false, error: "Failed to update kickstarter" };
+  }
+}
+
+export async function deleteKickstarter(id: string): Promise<ActionResult> {
+  const session = await auth();
+  if (!session?.user?.id) return { success: false, error: "Unauthorized" };
+
+  const existing = await prisma.kickstarter.findFirst({
+    where: { id, userId: session.user.id },
+  });
+  if (!existing) return { success: false, error: "Not found" };
+
+  try {
+    await prisma.kickstarter.delete({ where: { id } });
+    revalidatePath(REVALIDATE_PATH);
+    return { success: true, data: undefined };
+  } catch {
+    return { success: false, error: "Failed to delete kickstarter" };
+  }
+}
+
+export async function createHost(
+  input: unknown
+): Promise<ActionResult<{ id: string; name: string }>> {
+  const session = await auth();
+  if (!session?.user?.id) return { success: false, error: "Unauthorized" };
+
+  const parsed = kickstarterHostSchema.safeParse(input);
+  if (!parsed.success) return { success: false, error: "Validation failed" };
+
+  try {
+    const host = await prisma.kickstarterHost.create({
+      data: { name: parsed.data.name },
+    });
+    revalidatePath(REVALIDATE_PATH);
+    return { success: true, data: { id: host.id, name: host.name } };
+  } catch (err: unknown) {
+    if (
+      err instanceof Error &&
+      err.message.includes("Unique constraint")
+    ) {
+      return { success: false, error: "A host with that name already exists" };
+    }
+    return { success: false, error: "Failed to create host" };
+  }
+}
+
+export async function linkPackages(
+  kickstarterId: string,
+  packageIds: string[]
+): Promise<ActionResult> {
+  const session = await auth();
+  if (!session?.user?.id) return { success: false, error: "Unauthorized" };
+
+  const existing = await prisma.kickstarter.findFirst({
+    where: { id: kickstarterId, userId: session.user.id },
+  });
+  if (!existing) return { success: false, error: "Not found" };
+
+  try {
+    // Replace all linked packages
+    await prisma.$transaction([
+      prisma.kickstarterPackage.deleteMany({
+        where: { kickstarterId },
+      }),
+      ...packageIds.map((packageId) =>
+        prisma.kickstarterPackage.create({
+          data: { kickstarterId, packageId },
+        })
+      ),
+    ]);
+    revalidatePath(REVALIDATE_PATH);
+    return { success: true, data: undefined };
+  } catch {
+    return { success: false, error: "Failed to link packages" };
+  }
+}