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/tools/math-audit/main.go

@@ -0,0 +1,66 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"log"
+	"os"
+
+	"github.com/fraktal/mev-beta/tools/math-audit/internal/audit"
+	"github.com/fraktal/mev-beta/tools/math-audit/internal/checks"
+	"github.com/fraktal/mev-beta/tools/math-audit/internal/loader"
+	"github.com/fraktal/mev-beta/tools/math-audit/internal/report"
+)
+
+var (
+	vectorsFlag = flag.String("vectors", "default", "Vector set to load (default, path, or comma-separated list)")
+	reportDir   = flag.String("report", "", "Optional directory to write JSON and Markdown reports")
+)
+
+func main() {
+	flag.Parse()
+
+	log.SetFlags(0)
+
+	vectors, err := loader.LoadVectors(*vectorsFlag)
+	if err != nil {
+		log.Fatalf("load vectors: %v", err)
+	}
+
+	if len(vectors) == 0 {
+		log.Fatalf("no vectors loaded from selector %q", *vectorsFlag)
+	}
+
+	runner := audit.NewRunner()
+	propertyChecks := checks.Run()
+	result := runner.Run(vectors, propertyChecks)
+
+	failed := (result.Summary.VectorsPassed != result.Summary.TotalVectors) ||
+		(result.Summary.AssertionsPassed != result.Summary.TotalAssertions) ||
+		(result.Summary.PropertySucceeded != result.Summary.PropertyChecks)
+
+	fmt.Printf("Math audit completed: %d/%d vectors passed, %d/%d assertions passed, %d/%d property checks succeeded\n",
+		result.Summary.VectorsPassed,
+		result.Summary.TotalVectors,
+		result.Summary.AssertionsPassed,
+		result.Summary.TotalAssertions,
+		result.Summary.PropertySucceeded,
+		result.Summary.PropertyChecks,
+	)
+
+	if *reportDir != "" {
+		jsonPath, err := report.WriteJSON(*reportDir, result)
+		if err != nil {
+			log.Fatalf("write json report: %v", err)
+		}
+		mdPath, err := report.WriteMarkdown(*reportDir, result)
+		if err != nil {
+			log.Fatalf("write markdown report: %v", err)
+		}
+		fmt.Printf("Reports written to %s and %s\n", jsonPath, mdPath)
+	}
+
+	if failed {
+		os.Exit(1)
+	}
+}