COMMUNITY MARKETPLACE BOT

Setup:
pip install -r requirements.txt
Set BOT_TOKEN and ADMIN_ID environment variables.
python bot.py

Main user buttons:
🏪 Marketplace | ➕ Post Add | 🔍 Search | ❤️ Favorites
📋 My Posts | 💬 My Contacts | 👤 Account

Users can create listings. Posts require admin approval.
Marketplace supports categories, search, favorites and seller contact.
Admin: dashboard, pending/all posts, categories, users and broadcast.
SQLite database is created automatically.
No Firebase or external API is required.
