docs: clarify Claro v1 status and validation

tools/run_tests.py

@@ -0,0 +1,15 @@
+#!/usr/bin/env python3
+"""Compatibility wrapper around the built-in Claro RC0 test runner."""
+import os
+import pathlib
+import subprocess
+import sys
+
+ROOT = pathlib.Path(__file__).resolve().parent.parent
+CLARO = ROOT / ("claro.exe" if os.name == "nt" else "claro")
+
+if not CLARO.exists():
+    print("Build first: gcc -std=c99 src/claro.c -O0 -o " + ("claro.exe" if os.name == "nt" else "claro") + " -lm")
+    raise SystemExit(2)
+
+raise SystemExit(subprocess.call([str(CLARO), "test"], cwd=str(ROOT)))