feat: add Telegram integration with forum topic support and creator tracking

Adds full Telegram ZIP ingestion pipeline: TDLib worker service scans source
channels for archive files, deduplicates by content hash, extracts metadata,
uploads to archive channel, and indexes in Postgres. Forum supergroups are
scanned per-topic with topic names used as creator. Filename-based creator
extraction (e.g. "Mammoth Factory - 2026-01.zip") serves as fallback.

Includes admin UI for managing accounts/channels, simplified account setup
(API credentials via env vars), auth code/password submission dialog,
package browser with creator column, and live ingestion activity tracking.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/app/(app)/telegram/_components/telegram-admin.tsx

@@ -0,0 +1,41 @@
+"use client";
+
+import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs";
+import { PageHeader } from "@/components/shared/page-header";
+import { AccountsTab } from "./accounts-tab";
+import { ChannelsTab } from "./channels-tab";
+import type { AccountRow, ChannelRow } from "@/lib/telegram/admin-queries";
+
+interface TelegramAdminProps {
+  accounts: AccountRow[];
+  channels: ChannelRow[];
+}
+
+export function TelegramAdmin({ accounts, channels }: TelegramAdminProps) {
+  return (
+    <div className="space-y-4">
+      <PageHeader
+        title="Telegram"
+        description="Manage Telegram accounts, channels, and ingestion"
+      />
+
+      <Tabs defaultValue="accounts" className="space-y-4">
+        <TabsList>
+          <TabsTrigger value="accounts">
+            Accounts ({accounts.length})
+          </TabsTrigger>
+          <TabsTrigger value="channels">
+            Channels ({channels.length})
+          </TabsTrigger>
+        </TabsList>
+
+        <TabsContent value="accounts">
+          <AccountsTab accounts={accounts} />
+        </TabsContent>
+        <TabsContent value="channels">
+          <ChannelsTab channels={channels} />
+        </TabsContent>
+      </Tabs>
+    </div>
+  );
+}