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.test

@@ -0,0 +1,25 @@
+# Dockerfile for running MEV Bot tests
+FROM golang:1.25-alpine AS test
+
+# Install build dependencies
+RUN apk add --no-cache \
+    git \
+    make \
+    gcc \
+    musl-dev \
+    linux-headers \
+    bash
+
+# Set working directory
+WORKDIR /app
+
+# Copy go mod files first (for layer caching)
+COPY go.mod go.sum ./
+RUN go mod download
+
+# Copy source code
+COPY . .
+
+# Run tests by default
+# Note: Tests are compiled on demand; no need for pre-compilation
+CMD ["go", "test", "-v", "-race", "-coverprofile=coverage.out", "./..."]