feat(core): add logic converted from original repo by Claude Code

.env.example

@@ -0,0 +1,18 @@
+# Telegram Configuration
+TELEGRAM_BOT_TOKEN=your_bot_token_here
+TELEGRAM_BOT_USERNAME=your_bot_username
+
+# MongoDB Configuration
+MONGO_URI=mongodb://localhost:27017
+MONGO_DATABASE=store_scraper_bot
+MONGO_TIMEOUT_SECONDS=10
+
+# Application Configuration
+ENV=DEVELOPMENT
+ADMIN_IDS=123456789,987654321
+SOURCE_COMMIT=unknown
+
+# Optional: Override default constants
+APP_CACHE_SECONDS=600
+NUM_DAYS_WARNING_NOT_UPDATED=30
+SCHEDULE_CHECK_APP_TIME=0 7 * * *