feat: setup HTTP server and bootstrap application

Setup HTTP server with Bun.serve and bootstrap Telegram bot and other services.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/index.js

@@ -0,0 +1,50 @@
+import { serve } from 'bun';
+import logger from './utils/logger.js';
+import { config } from './env.js';
+import { startBot } from './bot.js';
+import { handleUpload } from './routes/upload.js';
+import { handleFileRedirect, handleFileInfo } from './routes/files.js';
+import { handleHealth } from './routes/health.js';
+import { cleanupRateLimitCache } from './utils/rateLimit.js';
+
+const server = serve({
+  port: config.port,
+  routes: {
+    '/api/upload': {
+      POST: handleUpload
+    },
+    '/f/:public_id': {
+      GET: handleFileRedirect
+    },
+    '/file/:public_id/info': {
+      GET: handleFileInfo
+    },
+    '/health': {
+      GET: handleHealth
+    }
+  }
+});
+
+const bot = await startBot();
+
+logger.info('Server started', { port: config.port, url: config.baseUrl });
+
+const gracefulShutdown = async (signal) => {
+  logger.info('Graceful shutdown signal received', { signal });
+
+  logger.info('Closing HTTP server');
+  server.stop();
+
+  logger.info('Stopping Telegram bot');
+  await bot.stop();
+
+  logger.info('Server shutdown complete');
+  process.exit(0);
+};
+
+process.on('SIGTERM', () => gracefulShutdown('SIGTERM'));
+process.on('SIGINT', () => gracefulShutdown('SIGINT'));
+
+setInterval(cleanupRateLimitCache, 60000);
+
+logger.info('Application running successfully');