feat: add cloud deploy fallback runtime

scripts/server_start.sh

@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+port="${PORT:-43210}"
+data_dir="${BOSS_DATA_DIR:-.boss-data}"
+data_file="${BOSS_DATA_FILE:-$data_dir/server-store.json}"
+pid_file="${BOSS_PID_FILE:-$data_dir/server.pid}"
+log_file="${BOSS_LOG_FILE:-$data_dir/server.log}"
+
+mkdir -p "$data_dir"
+
+if [[ -f "$pid_file" ]]; then
+  existing_pid="$(cat "$pid_file")"
+  if [[ -n "$existing_pid" ]] && kill -0 "$existing_pid" 2>/dev/null; then
+    kill "$existing_pid"
+    for _ in {1..20}; do
+      if ! kill -0 "$existing_pid" 2>/dev/null; then
+        break
+      fi
+      sleep 1
+    done
+  fi
+  rm -f "$pid_file"
+fi
+
+nohup env PORT="$port" BOSS_DATA_FILE="$data_file" node dist/server.js >>"$log_file" 2>&1 < /dev/null &
+echo $! > "$pid_file"
+
+for _ in {1..30}; do
+  if curl -fsS "http://127.0.0.1:${port}/api/health" >/dev/null 2>&1; then
+    echo "Boss server started on :${port}"
+    exit 0
+  fi
+  sleep 1
+done
+
+echo "Boss server failed to become healthy. Recent logs:" >&2
+tail -n 80 "$log_file" >&2 || true
+exit 1