feat: Add smart trading assistant with context awareness

- Add SmartAgent with automatic context injection
  - Real-time portfolio/position data in every prompt
  - AI knows current state before responding

- Add TradingContext builder
  - Aggregates balance, positions, P&L across all traders
  - Auto-generates alerts (liquidation risk, large loss, etc.)

- Add background Monitor
  - Proactive position monitoring every 30s
  - Detects new positions, closed positions
  - Forwards alerts to Telegram

- Enhanced system prompts
  - Professional trading assistant persona
  - Risk assessment guidelines
  - Clear response formatting rules

Features:
✅ Context-aware responses
✅ Proactive risk alerts
✅ Background monitoring
✅ Alert broadcasting to Telegram

telegram/bot.go

@@ -408,6 +408,25 @@ func (b *Bot) AddAllowedUser(userID int64) {
 	b.allowedUsers[userID] = true
 }
 
+// BroadcastAlert sends an alert to all admin users
+func (b *Bot) BroadcastAlert(message string) {
+	for _, adminID := range b.config.AdminUserIDs {
+		chat := &tele.Chat{ID: adminID}
+		_, err := b.bot.Send(chat, "🚨 "+message)
+		if err != nil {
+			logger.Errorf("Failed to send alert to admin %d: %v", adminID, err)
+		}
+	}
+	
+	// If no admins configured, send to allowed users
+	if len(b.config.AdminUserIDs) == 0 {
+		for userID := range b.allowedUsers {
+			chat := &tele.Chat{ID: userID}
+			_, _ = b.bot.Send(chat, "🚨 "+message)
+		}
+	}
+}
+
 // RemoveAllowedUser removes a user from the allowlist
 func (b *Bot) RemoveAllowedUser(userID int64) {
 	b.allowedUsersLock.Lock()