chore: enforce nginx-only setup and remove .htaccess

bin/qa-required.sh

@@ -41,6 +41,9 @@ run_step "QG-008 Docs link integrity" \
 run_step "QG-008 Docs drift contract" \
   bin/docs-drift-check.sh
 
+run_step "Nginx-only .htaccess guard" \
+  bash -lc 'matches="$(rg --files -g ".htaccess" || true)"; if [[ -n "${matches}" ]]; then echo "[FAIL] .htaccess files are not allowed in Nginx-only setup"; echo "${matches}"; exit 1; fi'
+
 run_step "CSS contract check" \
   bin/css-contract-check.sh