refactor: move all remaining files to orig/ directory

Completed clean root directory structure:
- Root now contains only: .git, .env, docs/, orig/
- Moved all remaining files and directories to orig/:
  - Config files (.claude, .dockerignore, .drone.yml, etc.)
  - All .env variants (except active .env)
  - Git config (.gitconfig, .github, .gitignore, etc.)
  - Tool configs (.golangci.yml, .revive.toml, etc.)
  - Documentation (*.md files, @prompts)
  - Build files (Dockerfiles, Makefile, go.mod, go.sum)
  - Docker compose files
  - All source directories (scripts, tests, tools, etc.)
  - Runtime directories (logs, monitoring, reports)
  - Dependency files (node_modules, lib, cache)
  - Special files (--delete)

- Removed empty runtime directories (bin/, data/)

V2 structure is now clean:
- docs/planning/ - V2 planning documents
- orig/ - Complete V1 codebase preserved
- .env - Active environment config (not in git)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

orig/scripts/check-wallet-balance.sh

@@ -0,0 +1,153 @@
+#!/usr/bin/env bash
+# Check wallet balance on Arbitrum One
+# Verifies wallet is ready for MEV bot execution
+
+set -euo pipefail
+
+PRIVATE_KEY_FILE="/tmp/wallet_key.txt"
+ALCHEMY_RPC="https://arb-mainnet.g.alchemy.com/v2/d6VAHgzkOI3NgLGem6uBMiADT1E9rROB"
+MIN_BALANCE_ETH="0.001"
+
+echo "═══════════════════════════════════════════════════════════"
+echo "💰 MEV Bot Wallet Balance Check"
+echo "═══════════════════════════════════════════════════════════"
+echo ""
+
+# Check if private key file exists
+if [ ! -f "$PRIVATE_KEY_FILE" ]; then
+    echo "❌ Error: Private key file not found at $PRIVATE_KEY_FILE"
+    exit 1
+fi
+
+PRIVATE_KEY=$(cat "$PRIVATE_KEY_FILE")
+
+# Derive wallet address
+echo "🔍 Deriving wallet address..."
+
+if command -v cast &> /dev/null; then
+    WALLET_ADDRESS=$(cast wallet address "$PRIVATE_KEY")
+elif command -v python3 &> /dev/null; then
+    WALLET_ADDRESS=$(python3 << 'EOF'
+try:
+    from eth_account import Account
+    import sys
+
+    with open('/tmp/wallet_key.txt', 'r') as f:
+        private_key = f.read().strip()
+
+    if private_key.startswith('0x'):
+        private_key = private_key[2:]
+
+    account = Account.from_key(bytes.fromhex(private_key))
+    print(account.address)
+except Exception as e:
+    print(f"Error: {e}", file=sys.stderr)
+    sys.exit(1)
+EOF
+)
+else
+    echo "❌ Error: Neither cast nor python3 available"
+    echo "   Please install Foundry or Python with eth_account"
+    exit 1
+fi
+
+echo "✅ Wallet Address: $WALLET_ADDRESS"
+echo ""
+
+# Query balance from Arbitrum
+echo "🌐 Querying Arbitrum One network..."
+
+BALANCE_HEX=$(curl -s -X POST "$ALCHEMY_RPC" \
+    -H "Content-Type: application/json" \
+    -d "{\"jsonrpc\":\"2.0\",\"method\":\"eth_getBalance\",\"params\":[\"$WALLET_ADDRESS\",\"latest\"],\"id\":1}" | \
+    grep -o '"result":"[^"]*"' | \
+    cut -d'"' -f4)
+
+if [ -z "$BALANCE_HEX" ]; then
+    echo "❌ Error: Failed to query balance from Arbitrum"
+    echo "   RPC endpoint may be unavailable"
+    exit 1
+fi
+
+# Convert hex to decimal (wei)
+# Handle both with and without 0x prefix
+if [[ "$BALANCE_HEX" == 0x* ]]; then
+    BALANCE_WEI=$((BALANCE_HEX))
+else
+    BALANCE_WEI=$((0x$BALANCE_HEX))
+fi
+
+# Convert wei to ETH (1 ETH = 10^18 wei)
+BALANCE_ETH=$(echo "scale=6; $BALANCE_WEI / 1000000000000000000" | bc)
+
+echo "✅ Balance Retrieved"
+echo ""
+
+# Display balance
+echo "═══════════════════════════════════════════════════════════"
+echo "💰 Current Balance"
+echo "═══════════════════════════════════════════════════════════"
+echo ""
+echo "  Address: $WALLET_ADDRESS"
+echo "  Network: Arbitrum One (Chain ID: 42161)"
+echo "  Balance: $BALANCE_ETH ETH"
+echo "  Value:   ~\$$(echo "scale=2; $BALANCE_ETH * 2000" | bc) USD (at \$2000/ETH)"
+echo ""
+
+# Check if balance meets minimum
+BALANCE_CHECK=$(echo "$BALANCE_ETH >= $MIN_BALANCE_ETH" | bc)
+
+if [ "$BALANCE_CHECK" -eq 1 ]; then
+    echo "✅ Wallet is funded and ready for execution!"
+    echo ""
+
+    # Calculate estimated trades
+    TRADES=$(echo "scale=0; $BALANCE_ETH / 0.0005" | bc)
+    echo "📊 Estimated Capacity:"
+    echo "  • Max gas per trade: ~\$1.00 (~0.0005 ETH)"
+    echo "  • Estimated trades: ~$TRADES transactions"
+    echo "  • Recommended refill: When balance < 0.0005 ETH"
+    echo ""
+
+    echo "⏭️  Next Steps:"
+    echo "  1. Run: ./scripts/setup-keystore.sh"
+    echo "  2. Enable execution mode in config"
+    echo "  3. Restart bot to begin trading"
+    echo ""
+
+    # Arbiscan link
+    echo "🔗 View on Arbiscan:"
+    echo "   https://arbiscan.io/address/$WALLET_ADDRESS"
+    echo ""
+
+    exit 0
+else
+    echo "⚠️  Wallet balance is below minimum threshold"
+    echo ""
+    echo "❌ Current:  $BALANCE_ETH ETH"
+    echo "✅ Required: $MIN_BALANCE_ETH ETH"
+    echo "📉 Deficit:  $(echo "scale=6; $MIN_BALANCE_ETH - $BALANCE_ETH" | bc) ETH"
+    echo ""
+    echo "💡 Funding Instructions:"
+    echo ""
+    echo "  **Option 1: Bridge from Ethereum**"
+    echo "    • Visit: https://bridge.arbitrum.io/"
+    echo "    • Bridge 0.001-0.005 ETH from Ethereum to Arbitrum"
+    echo "    • Wait 7-15 minutes for confirmation"
+    echo ""
+    echo "  **Option 2: Exchange Withdrawal**"
+    echo "    • Go to Coinbase/Binance/Kraken"
+    echo "    • Withdraw → ETH → Select 'Arbitrum One' network"
+    echo "    • Send to: $WALLET_ADDRESS"
+    echo "    • Amount: 0.001-0.005 ETH"
+    echo ""
+    echo "  **Option 3: From Existing Arbitrum Wallet**"
+    echo "    • Open MetaMask on Arbitrum One network"
+    echo "    • Send 0.001-0.005 ETH to: $WALLET_ADDRESS"
+    echo ""
+    echo "🔗 Track transaction:"
+    echo "   https://arbiscan.io/address/$WALLET_ADDRESS"
+    echo ""
+
+    exit 1
+fi