CD/CD consolidation

devops/tools/lint/implementor-guidelines.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Stub lint: enforce docs tag placeholder until full checks land.
+if git diff --cached --name-only | grep -q '^docs/'; then
+  echo "[stub] docs touched: ensure commit includes 'docs:' trailer (value or 'n/a')"
+fi