ci: add GitHub Actions test workflow

scripts/ci/integration.sh

@@ -0,0 +1,53 @@
+#!/usr/bin/env bash
+set -Eeuo pipefail
+
+server_log="${RUNNER_TEMP:-${TMPDIR:-/tmp}}/xinfra-server.log"
+server_pid=""
+
+cleanup() {
+  if [[ -n "${server_pid}" ]] && kill -0 "${server_pid}" 2>/dev/null; then
+    kill "${server_pid}" 2>/dev/null || true
+    wait "${server_pid}" 2>/dev/null || true
+  fi
+}
+trap cleanup EXIT
+
+echo "Starting backend; log: ${server_log}"
+go run ./cmd/server >"${server_log}" 2>&1 &
+server_pid=$!
+
+ready=false
+for attempt in $(seq 1 30); do
+  if curl --fail --silent --show-error http://127.0.0.1:8080/readyz >/tmp/xinfra-readyz.json; then
+    echo "Backend is ready after ${attempt} attempt(s)."
+    ready=true
+    break
+  fi
+
+  if ! kill -0 "${server_pid}" 2>/dev/null; then
+    echo "Backend exited before becoming ready."
+    cat "${server_log}"
+    exit 1
+  fi
+
+  sleep 2
+
+done
+
+if [[ "${ready}" != true ]]; then
+  echo "Backend did not become ready within the timeout."
+  cat "${server_log}"
+  exit 1
+fi
+
+if ! curl --fail --silent --show-error http://127.0.0.1:8080/readyz | grep -q '"status":"ok"'; then
+  echo "Backend readiness check did not return status=ok."
+  cat /tmp/xinfra-readyz.json || true
+  cat "${server_log}"
+  exit 1
+fi
+
+curl --fail --silent --show-error http://127.0.0.1:8080/healthz | grep -q '"status":"ok"'
+curl --fail --silent --show-error http://127.0.0.1:8080/api/v1/ping | grep -q '"code":0'
+
+echo "Backend integration smoke test passed."