docs: add smoke script and auth-aware verification steps

scripts/smoke-no-reply-api.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+BASE_URL="${BASE_URL:-http://127.0.0.1:8787}"
+AUTH_TOKEN="${AUTH_TOKEN:-}"
+
+AUTH_HEADER=()
+if [[ -n "$AUTH_TOKEN" ]]; then
+  AUTH_HEADER=(-H "Authorization: Bearer ${AUTH_TOKEN}")
+fi
+
+echo "[1] health"
+curl -sS "${BASE_URL}/health" | sed -n '1,3p'
+
+echo "[2] models"
+curl -sS "${BASE_URL}/v1/models" "${AUTH_HEADER[@]}" | sed -n '1,8p'
+
+echo "[3] chat/completions"
+curl -sS -X POST "${BASE_URL}/v1/chat/completions" \
+  -H 'Content-Type: application/json' \
+  "${AUTH_HEADER[@]}" \
+  -d '{"model":"whispergate-no-reply-v1","messages":[{"role":"user","content":"hello"}]}' \
+  | sed -n '1,20p'
+
+echo "[4] responses"
+curl -sS -X POST "${BASE_URL}/v1/responses" \
+  -H 'Content-Type: application/json' \
+  "${AUTH_HEADER[@]}" \
+  -d '{"model":"whispergate-no-reply-v1","input":"hello"}' \
+  | sed -n '1,20p'
+
+echo "smoke ok"