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/pre-run-validation.sh

@@ -0,0 +1,76 @@
+#!/bin/bash
+# Pre-Run Validation Script
+# Validates environment before starting MEV bot
+
+set -e
+
+echo "========================================="
+echo "MEV Bot Pre-Run Validation"
+echo "========================================="
+
+ERRORS=0
+
+# Check RPC endpoints
+echo "[1/5] Checking RPC endpoints..."
+if [ -z "$ARBITRUM_RPC_ENDPOINT" ]; then
+    echo "❌ ARBITRUM_RPC_ENDPOINT not set"
+    ERRORS=$((ERRORS + 1))
+else
+    echo "✅ ARBITRUM_RPC_ENDPOINT: $ARBITRUM_RPC_ENDPOINT"
+fi
+
+# Check for wss:// or https:// prefix
+echo "[2/5] Validating endpoint format..."
+if [[ "$ARBITRUM_RPC_ENDPOINT" == wss://* ]] || [[ "$ARBITRUM_RPC_ENDPOINT" == https://* ]]; then
+    echo "✅ Endpoint format valid"
+else
+    echo "❌ Endpoint must start with wss:// or https://"
+    ERRORS=$((ERRORS + 1))
+fi
+
+# Check log directory
+echo "[3/5] Checking log directory..."
+if [ -d "logs" ]; then
+    echo "✅ Log directory exists"
+
+    # Check for excessive zero addresses in recent logs
+    if [ -f "logs/liquidity_events_$(date +%Y-%m-%d).jsonl" ]; then
+        ZERO_COUNT=$(grep -c "0x0000000000000000000000000000000000000000" "logs/liquidity_events_$(date +%Y-%m-%d).jsonl" 2>/dev/null || echo 0)
+        echo "Zero addresses in today's events: $ZERO_COUNT"
+        if [ "$ZERO_COUNT" -gt 10 ]; then
+            echo "⚠️  WARNING: High zero address count detected"
+        fi
+    fi
+else
+    mkdir -p logs
+    echo "✅ Created log directory"
+fi
+
+# Check binary exists
+echo "[4/5] Checking binary..."
+if [ -f "./mev-bot" ] || [ -f "./bin/mev-bot" ]; then
+    echo "✅ MEV bot binary found"
+else
+    echo "❌ MEV bot binary not found. Run 'make build' first"
+    ERRORS=$((ERRORS + 1))
+fi
+
+# Check for port conflicts
+echo "[5/5] Checking for port conflicts..."
+if lsof -Pi :9090 -sTCP:LISTEN -t >/dev/null 2>&1; then
+    echo "⚠️  WARNING: Port 9090 (metrics) already in use"
+fi
+
+if lsof -Pi :8080 -sTCP:LISTEN -t >/dev/null 2>&1; then
+    echo "⚠️  WARNING: Port 8080 (dashboard) already in use"
+fi
+
+echo ""
+echo "========================================="
+if [ $ERRORS -eq 0 ]; then
+    echo "✅ Validation PASSED - Safe to start"
+    exit 0
+else
+    echo "❌ Validation FAILED - $ERRORS error(s) found"
+    exit 1
+fi