feat: Docker audit + Telegram bot service + send UI

Docker:
- Harden docker-compose.yml: parameterized DB creds, required AUTH_SECRET,
  health checks, resource limits, network isolation, removed exposed DB port
- Add profiles (telegram/bot/full) so base 'docker compose up' needs only AUTH_SECRET
- Fix docker-entrypoint.sh: AUTH_SECRET startup guard
- Fix Dockerfile: copy prisma.config.ts + dotenv into production image
- Update .env.example with all new variables
- Update .dockerignore

Telegram Bot Service (bot/):
- TDLib-based bot using bot token auth (not HTTP Bot API)
- Commands: /search, /latest, /package, /link, /unlink, /subscribe, /unsubscribe
- pg_notify listener for send requests (bot_send) and new packages (new_package)
- Subscription-based notifications when matching packages arrive
- Dockerfile with multi-stage build (bookworm-slim for glibc/TDLib)

API & Database:
- Prisma: TelegramLink, BotSendRequest, BotSubscription models + migration
- POST /api/telegram/bot/send - queue package delivery to linked TG account
- GET /api/telegram/bot/send/[id] - poll send request status
- Server actions: generateTelegramLinkCode, unlinkTelegram, getBotSendHistory
- Worker: emit pg_notify('new_package') after creating packages

Frontend:
- Settings: TelegramLinkCard for account linking via one-time code
- STL table + drawer: SendToTelegramButton with send dialog and status polling
- Telegram admin: Bot Sends tab with delivery history table
- Shared SendHistoryRow type

README: Updated with bot docs, profiles, config vars, project structure

worker/src/db/queries.ts

@@ -116,7 +116,7 @@ export interface CreatePackageInput {
 }
 
 export async function createPackageWithFiles(input: CreatePackageInput) {
-  return db.package.create({
+  const pkg = await db.package.create({
     data: {
       contentHash: input.contentHash,
       fileName: input.fileName,
@@ -139,6 +139,22 @@ export async function createPackageWithFiles(input: CreatePackageInput) {
       },
     },
   });
+
+  // Notify the bot service about the new package (for subscription alerts)
+  try {
+    await db.$queryRawUnsafe(
+      `SELECT pg_notify('new_package', $1)`,
+      JSON.stringify({
+        packageId: pkg.id,
+        fileName: input.fileName,
+        creator: input.creator ?? null,
+      })
+    );
+  } catch {
+    // Best-effort — don't fail the ingestion if notification fails
+  }
+
+  return pkg;
 }
 
 export async function createIngestionRun(accountId: string) {