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/setup-env.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Setup script for MEV Bot environment
+echo "Setting up MEV Bot environment..."
+
+# Copy the fixed .env file if it exists
+if [[ -f ".env.fixed" ]]; then
+    cp .env.fixed .env
+    echo "✅ Copied .env.fixed to .env"
+else
+    echo "⚠️  Warning: .env.fixed not found, skipping copy"
+fi
+
+# Create required directories
+mkdir -p keystore backups logs
+
+# Set proper permissions
+chmod 600 .env
+
+echo "Environment setup complete!"
+echo ""
+echo "IMPORTANT: Please update the following variables in .env:"
+echo "  - ETHEREUM_PRIVATE_KEY: Your actual private key"
+echo "  - ETHEREUM_ACCOUNT_ADDRESS: Your Ethereum account address"
+echo "  - CONTRACT_ARBITRAGE_EXECUTOR: Your deployed arbitrage contract address"
+echo "  - CONTRACT_FLASH_SWAPPER: Your deployed flash swapper contract address"
+echo ""
+echo "You can generate a new encryption key with:"
+echo "  openssl rand -base64 32"