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/.gitconfig

@@ -0,0 +1,51 @@
+# Git Configuration for MEV Bot Project
+
+This file contains the Git configuration settings for the MEV Bot project.
+
+## Project-Level Git Configuration
+
+```ini
+[core]
+    autocrlf = input
+    editor = code --wait
+    excludesfile = ~/.gitignore
+
+[push]
+    default = simple
+
+[pull]
+    rebase = true
+
+[merge]
+    tool = vimdiff
+
+[diff]
+    tool = vimdiff
+
+[color]
+    ui = auto
+
+[help]
+    autocorrect = 1
+
+[alias]
+    st = status
+    co = checkout
+    br = branch
+    ci = commit
+    unstage = reset HEAD --
+    last = log -1 HEAD
+    graph = log --oneline --graph --decorate --all
+    amend = commit --amend
+    fixup = commit --fixup
+    undo = reset --soft HEAD~1
+    hist = log --pretty=format:\"%h %ad | %s%d [%an]\" --graph --date=short
+    who = shortlog -s --
+    grep = grep -I
+
+[rerere]
+    enabled = true
+
+[push]
+    followTags = true
+```