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/.drone.yml

@@ -0,0 +1,160 @@
+kind: pipeline
+type: docker
+name: test-suite
+
+trigger:
+  event:
+    - push
+    - pull_request
+
+workspace:
+  path: /drone/src
+
+steps:
+  - name: setup-go-cache
+    image: golang:1.24
+    environment:
+      GOCACHE: /drone/src/.gocache
+    commands:
+      - go env -w GOCACHE=$GOCACHE
+      - go mod download
+      - go mod verify
+
+  - name: lint
+    image: golangci/golangci-lint:1.55.2
+    environment:
+      GOFLAGS: -buildvcs=false
+    commands:
+      - golangci-lint run --timeout=10m
+
+  - name: unit-tests
+    image: golang:1.24
+    environment:
+      GOCACHE: /drone/src/.gocache
+      GOFLAGS: -buildvcs=false
+    commands:
+      - go test -race -coverprofile=coverage.out ./...
+
+  - name: build-binary
+    image: golang:1.24
+    environment:
+      GOFLAGS: -buildvcs=false
+    commands:
+      - go build -o bin/mev-bot ./cmd/mev-bot
+
+  - name: smoke-start
+    image: golang:1.24
+    environment:
+      GOFLAGS: -buildvcs=false
+      MEV_BOT_ENCRYPTION_KEY: test_key_32_chars_minimum_length
+    commands:
+      - timeout 5s ./bin/mev-bot start || true
+
+  - name: math-audit
+    image: golang:1.24
+    environment:
+      GOCACHE: /drone/src/.gocache
+      GOFLAGS: -buildvcs=false
+    commands:
+      - go run ./tools/math-audit --vectors default --report reports/math/latest
+      - test -s reports/math/latest/report.json
+      - test -s reports/math/latest/report.md
+
+  - name: simulate-profit
+    image: golang:1.24
+    environment:
+      GOCACHE: /drone/src/.gocache
+      GOFLAGS: -buildvcs=false
+    commands:
+      - ./scripts/run_profit_simulation.sh
+
+  - name: docker-build
+    image: plugins/docker:20
+    settings:
+      repo: mev-bot/local
+      tags:
+        - latest
+      dry_run: true
+
+---
+kind: pipeline
+type: docker
+name: security-suite
+
+trigger:
+  event:
+    - push
+    - pull_request
+  branch:
+    include:
+      - main
+      - develop
+      - audit
+
+workspace:
+  path: /drone/src
+
+steps:
+  - name: setup-go
+    image: golang:1.24
+    environment:
+      GOCACHE: /drone/src/.gocache
+    commands:
+      - go env -w GOCACHE=$GOCACHE
+      - go mod download
+
+  - name: gosec
+    image: securego/gosec:2.18.1
+    commands:
+      - gosec -fmt sarif -out gosec-results.sarif ./...
+
+  - name: govulncheck
+    image: golang:1.24
+    commands:
+      - go install golang.org/x/vuln/cmd/govulncheck@latest
+      - govulncheck ./...
+
+  - name: dependency-scan
+    image: golang:1.24
+    commands:
+      - go install github.com/sonatypecommunity/nancy@latest
+      - go list -json -m all | nancy sleuth --exclude-vulnerability-file .nancy-ignore
+
+  - name: fuzz-security
+    image: golang:1.24
+    environment:
+      GOFLAGS: -buildvcs=false
+    commands:
+      - mkdir -p logs keystore test_keystore benchmark_keystore test_concurrent_keystore
+      - go test -v -race ./pkg/security/
+      - go test -fuzz=FuzzRPCResponseParser -fuzztime=30s ./pkg/security/
+      - go test -fuzz=FuzzKeyValidation -fuzztime=30s ./pkg/security/
+      - go test -fuzz=FuzzInputValidator -fuzztime=30s ./pkg/security/
+
+  - name: parser-sanity
+    image: golang:1.24
+    commands:
+      - go run cmd/mev-bot/main.go || true
+
+---
+kind: pipeline
+type: docker
+name: integration-opt-in
+
+trigger:
+  event:
+    - custom
+  action:
+    - integration
+
+workspace:
+  path: /drone/src
+
+steps:
+  - name: run-integration
+    image: golang:1.24
+    environment:
+      GOCACHE: /drone/src/.gocache
+      GOFLAGS: -buildvcs=false
+    commands:
+      - go test -tags=integration ./...