feat: facts audit/extract/crm shebang wrappers (D14) (#19)

Python stays the implementation. Commands are bin/facts/{audit,extract,crm}.go
like postgres/query.go.

bin/facts/extract.go

@@ -0,0 +1,20 @@
+//usr/bin/env go run -tags=facts_extract "$0" "$@"; exit
+//go:build facts_extract
+//
+// bin/facts/extract.go - acquire confirmed facts (2-source each).
+//
+//	./bin/facts/extract.go [--json] [--dry-run]
+//
+// Python bin/facts/extract is the implementation. Graph write stays Python.
+// NOTE: never run `gofmt -w` on this file — it breaks the shebang.
+package main
+
+import (
+	"os"
+
+	"github.com/eSlider/2dph/internal/cmdbin"
+)
+
+func main() {
+	os.Exit(cmdbin.ExecFile("bin/facts/extract", os.Args[1:]))
+}