Add doctor-setup target for diagnostics

Makefile

@@ -1,6 +1,8 @@
-.PHONY: site test deploy help
+.PHONY: doctor-setup site test deploy help
 help:
 	@grep -E "^[a-zA-Z_-]+:.*?## .*$$" $(MAKEFILE_LIST) | awk "BEGIN{FS=\":.*?## \"}{printf \"  %-10s %s\\n\",\$$1,\$$2}"
+doctor-setup: ## Bootstrap the environment for diagnostics
+	python3 scripts/check_doctor_setup.py
 site: ## Build docs _site/
 	python3 scripts/build_site.py _site
 test: ## Build the site and validate pages + internal links

scripts/check_doctor_setup.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+"""Doctor workflow setup verification for docs repository."""
+from __future__ import annotations
+
+import sys
+from pathlib import Path
+
+
+def _ensure_files_exist(paths: list[str]) -> bool:
+    missing: list[str] = [path for path in paths if not Path(path).exists()]
+    if missing:
+        print(f"FAIL: missing required file(s): {', '.join(missing)}")
+        return False
+    return True
+
+
+def main() -> int:
+    required = [
+        "Makefile",
+        "scripts/build_site.py",
+        "scripts/check_site.py",
+        "scripts/check_node_types.py",
+    ]
+    if not _ensure_files_exist(required):
+        return 1
+    print("Doctor setup checks passed")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())