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/schemas/telegram.ts

@@ -0,0 +1,71 @@
+import { z } from "zod/v4";
+
+export const paginationSchema = z.object({
+  page: z.coerce.number().int().min(1).default(1),
+  limit: z.coerce.number().int().min(1).max(100).default(25),
+});
+
+export const listPackagesSchema = paginationSchema.extend({
+  channelId: z.string().optional(),
+  creator: z.string().optional(),
+  sortBy: z.enum(["indexedAt", "fileName", "fileSize"]).default("indexedAt"),
+  order: z.enum(["asc", "desc"]).default("desc"),
+});
+
+export const listFilesSchema = paginationSchema.extend({
+  limit: z.coerce.number().int().min(1).max(500).default(50),
+  extension: z.string().optional(),
+});
+
+export const searchSchema = paginationSchema.extend({
+  q: z.string().min(1),
+  searchIn: z.enum(["packages", "files", "both"]).default("both"),
+});
+
+export const triggerIngestionSchema = z.object({
+  accountId: z.string().optional(),
+});
+
+// ── Account CRUD ──
+
+export const telegramAccountSchema = z.object({
+  phone: z
+    .string()
+    .min(1, "Phone number is required")
+    .regex(/^\+?\d[\d\s\-]{6,20}$/, "Invalid phone format (e.g. +31612345678)"),
+  displayName: z.string().max(64).optional().or(z.literal("")),
+});
+
+export type TelegramAccountInput = z.infer<typeof telegramAccountSchema>;
+
+export const submitAuthCodeSchema = z.object({
+  code: z.string().min(3, "Auth code is required").max(10),
+});
+
+export type SubmitAuthCodeInput = z.infer<typeof submitAuthCodeSchema>;
+
+export const submitPasswordSchema = z.object({
+  password: z.string().min(1, "Password is required"),
+});
+
+export type SubmitPasswordInput = z.infer<typeof submitPasswordSchema>;
+
+// ── Channel CRUD ──
+
+export const telegramChannelSchema = z.object({
+  telegramId: z.coerce.number().int().min(1, "Telegram ID is required"),
+  title: z.string().min(1, "Title is required").max(256),
+  type: z.enum(["SOURCE", "DESTINATION"]),
+});
+
+export type TelegramChannelInput = z.infer<typeof telegramChannelSchema>;
+
+// ── Account-Channel linking ──
+
+export const linkChannelSchema = z.object({
+  accountId: z.string().min(1),
+  channelId: z.string().min(1),
+  role: z.enum(["READER", "WRITER"]).default("READER"),
+});
+
+export type LinkChannelInput = z.infer<typeof linkChannelSchema>;