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/harness/pipelines/staging.yaml

@@ -0,0 +1,139 @@
+pipeline:
+  name: Staging Promotion
+  identifier: staging_promotion
+  projectIdentifier: mev_bot
+  orgIdentifier: default
+  tags: {}
+  properties:
+    ci:
+      codebase:
+        connectorRef: account.git
+        repoName: fraktal/mev-beta
+        build:
+          type: branch
+          spec:
+            branch: <+input>
+  stages:
+    - stage:
+        name: Build & Test
+        identifier: build_test
+        description: Run Drone-equivalent checks inside Harness.
+        type: CI
+        spec:
+          cloneCodebase: true
+          platform:
+            os: Linux
+            arch: Amd64
+          execution:
+            steps:
+              - step:
+                  type: Run
+                  name: Lint
+                  identifier: lint
+                  spec:
+                    shell: Bash
+                    command: |
+                      go mod download
+                      golangci-lint run --timeout=10m
+              - step:
+                  type: Run
+                  name: UnitTests
+                  identifier: unit_tests
+                  spec:
+                    shell: Bash
+                    command: |
+                      GOCACHE=$(pwd)/.gocache go test -race -coverprofile=coverage.out ./...
+                      test -s coverage.out
+              - step:
+                  type: Run
+                  name: MathAudit
+                  identifier: math_audit
+                  spec:
+                    shell: Bash
+                    command: |
+                      GOCACHE=$(pwd)/.gocache go run ./tools/math-audit --vectors default --report reports/math/latest
+                      ls -l reports/math/latest
+              - step:
+                  type: Run
+                  name: ProfitSimulation
+                  identifier: profit_simulation
+                  spec:
+                    shell: Bash
+                    command: |
+                      ./scripts/run_profit_simulation.sh
+                      cat reports/simulation/latest/summary.md
+          caching:
+            enabled: true
+    - stage:
+        name: Package
+        identifier: package
+        type: CI
+        spec:
+          cloneCodebase: false
+          platform:
+            os: Linux
+            arch: Amd64
+          execution:
+            steps:
+              - step:
+                  type: Run
+                  name: DockerBuild
+                  identifier: docker_build
+                  spec:
+                    shell: Bash
+                    command: |
+                      docker build -t mev-bot:${HARNESS_BUILD_NUMBER} .
+                      docker save mev-bot:${HARNESS_BUILD_NUMBER} -o mev-bot.tar
+              - step:
+                  type: Run
+                  name: PublishArtifact
+                  identifier: publish_artifact
+                  spec:
+                    shell: Bash
+                    command: |
+                      echo "Uploading mev-bot.tar to artifact store"
+        when:
+          pipelineStatus: Success
+    - stage:
+        name: Deploy to Staging
+        identifier: deploy_staging
+        type: CD
+        spec:
+          deploymentType: Kubernetes
+          service:
+            serviceRef: staging
+          environment:
+            environmentRef: staging
+          execution:
+            steps:
+              - step:
+                  type: ShellScript
+                  name: HelmUpgrade
+                  identifier: helm_upgrade
+                  spec:
+                    shell: Bash
+                    source: Inline
+                    script: |
+                      helm upgrade --install mev-bot charts/mev-bot \
+                        --set image.tag=${HARNESS_BUILD_NUMBER} \
+                        --namespace mev-bot-staging
+              - step:
+                  type: ShellScript
+                  name: PostDeployChecks
+                  identifier: post_deploy_checks
+                  spec:
+                    shell: Bash
+                    source: Inline
+                    script: |
+                      kubectl rollout status deploy/mev-bot -n mev-bot-staging --timeout=120s
+                      kubectl logs deploy/mev-bot -n mev-bot-staging | tail -n 100
+          rollbackSteps:
+            - step:
+                type: ShellScript
+                name: Rollback
+                identifier: rollback
+                spec:
+                  shell: Bash
+                  source: Inline
+                  script: |
+                    helm rollback mev-bot 1 || true