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/Dockerfile.dev

@@ -0,0 +1,69 @@
+# Development Dockerfile for MEV Bot with branch selection support
+# Usage: docker build --build-arg GIT_BRANCH=master-dev -f Dockerfile.dev -t mev-bot:dev .
+
+# Build stage
+FROM golang:1.25-alpine AS builder
+
+# Install build dependencies for CGO-enabled packages and git
+RUN apk add --no-cache git build-base
+
+# Set working directory
+WORKDIR /app
+
+# Accept git branch as build argument (defaults to master-dev)
+ARG GIT_BRANCH=master-dev
+ENV GIT_BRANCH=${GIT_BRANCH}
+
+# Copy all files (including .git for branch info)
+COPY . .
+
+# Set Go environment
+ENV GOCACHE=/go/cache
+ENV CGO_ENABLED=1
+
+# Download dependencies
+RUN go mod download
+
+# Build the application
+RUN go build -o bin/mev-bot cmd/mev-bot/main.go
+
+# Final stage - Development image with more tools
+FROM alpine:latest
+
+# Install runtime dependencies for development
+RUN apk --no-cache add \
+    ca-certificates \
+    git \
+    bash \
+    curl \
+    vim \
+    htop
+
+# Create a non-root user
+RUN adduser -D -s /bin/bash mevbot
+
+# Set working directory
+WORKDIR /app
+
+# Copy the binary from builder stage
+COPY --from=builder /app/bin/mev-bot .
+
+# Copy config files
+COPY --from=builder /app/config ./config
+
+# Change ownership to non-root user
+RUN chown -R mevbot:mevbot /app
+
+# Switch to non-root user
+USER mevbot
+
+# Expose ports
+EXPOSE 8080 9090
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
+    CMD pgrep -f mev-bot || exit 1
+
+# Command to run the application
+ENTRYPOINT ["./mev-bot"]
+CMD ["start"]