```

feat: add market stats endpoint, wallet integration, and browser wallet link

- Update devnet genesis timestamp to 1767000206
- Add market statistics endpoint with 24h volume, price change, and payment counts
- Add wallet balance and info API endpoints in exchange router
- Remove unused SessionDep dependencies from exchange endpoints
- Integrate real AITBC wallet extension connection in trade-exchange UI
- Add market data fetching with API fallback for price and volume display
- Add cache-busting query

scripts/return_testnet_btc.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+# Script to return testnet Bitcoin
+
+RETURN_ADDRESS="tb1qerzrlxcfu24davlur5sqmgzzgsal6wusda40er"
+
+echo "Checking balance..."
+BALANCE=$(bitcoin-cli -testnet -rpcwallet=aitbc_exchange getbalance)
+
+if [ "$(echo "$BALANCE > 0" | bc)" -eq 1 ]; then
+    echo "Current balance: $BALANCE BTC"
+    echo "Sending to return address: $RETURN_ADDRESS"
+    
+    # Calculate amount to send (balance minus small fee)
+    SEND_AMOUNT=$(echo "$BALANCE - 0.00001" | bc)
+    
+    TXID=$(bitcoin-cli -testnet -rpcwallet=aitbc_exchange sendtoaddress "$RETURN_ADDRESS" "$SEND_AMOUNT")
+    echo "Transaction sent! TXID: $TXID"
+    echo "Explorer: https://blockstream.info/testnet/tx/$TXID"
+else
+    echo "No Bitcoin to return. Current balance: $BALANCE BTC"
+fi