Complete markdown files cleanup and organization

- Organized 252 files across project
- Root directory: 187 → 2 files (98.9% reduction)
- Moved configuration guides to docs/04-configuration/
- Moved troubleshooting guides to docs/09-troubleshooting/
- Moved quick start guides to docs/01-getting-started/
- Moved reports to reports/ directory
- Archived temporary files
- Generated comprehensive reports and documentation
- Created maintenance scripts and guides

All files organized according to established standards.

scripts/check-balance.sh

@@ -0,0 +1,73 @@
+#!/usr/bin/env bash
+# Check account balance via public RPC
+# Usage: ./scripts/check-balance.sh [address] [rpc-url]
+
+set -euo pipefail
+
+ADDRESS="${1:-}"
+RPC_URL="${2:-https://rpc-http-pub.d-bis.org}"
+
+if [ -z "$ADDRESS" ]; then
+    echo "Usage: $0 <address> [rpc-url]"
+    echo "Example: $0 0x4a666f96fc8764181194447a7dfdb7d471b301c8"
+    exit 1
+fi
+
+# Colors
+GREEN='\033[0;32m'
+BLUE='\033[0;34m'
+NC='\033[0m'
+
+echo "Checking balance for: $ADDRESS"
+echo "RPC URL: $RPC_URL"
+echo ""
+
+RESPONSE=$(curl -s -X POST "$RPC_URL" \
+    -H "Content-Type: application/json" \
+    -d "{\"jsonrpc\":\"2.0\",\"method\":\"eth_getBalance\",\"params\":[\"$ADDRESS\",\"latest\"],\"id\":1}")
+
+if echo "$RESPONSE" | jq -e '.error' >/dev/null 2>&1; then
+    ERROR=$(echo "$RESPONSE" | jq -r '.error.message' 2>/dev/null || echo "Unknown error")
+    echo "Error: $ERROR"
+    exit 1
+fi
+
+BALANCE_HEX=$(echo "$RESPONSE" | jq -r '.result' 2>/dev/null)
+
+if [ -z "$BALANCE_HEX" ] || [ "$BALANCE_HEX" = "null" ]; then
+    echo "Error: Could not get balance"
+    exit 1
+fi
+
+# Convert hex to wei using Python
+BALANCE_WEI=$(python3 << PYEOF
+balance_hex = "$BALANCE_HEX"
+balance_wei = int(balance_hex, 16)
+print(balance_wei)
+PYEOF
+)
+
+# Convert wei to ETH
+BALANCE_ETH=$(python3 << PYEOF
+balance_wei = $BALANCE_WEI
+balance_eth = balance_wei / 10**18
+print(f"{balance_eth:.6f}")
+PYEOF
+)
+
+echo "Balance (hex): $BALANCE_HEX"
+echo "Balance (wei): $BALANCE_WEI"
+echo -e "${GREEN}Balance (ETH): $BALANCE_ETH ETH${NC}"
+echo ""
+
+# Also show in other units
+if [ "$BALANCE_WEI" != "0" ]; then
+    BALANCE_GWEI=$(python3 << PYEOF
+balance_wei = $BALANCE_WEI
+balance_gwei = balance_wei / 10**9
+print(f"{balance_gwei:.2f}")
+PYEOF
+)
+    echo "Balance (Gwei): $BALANCE_GWEI Gwei"
+fi
+