加固既有生产部署流程（07-27-yang-jun-reimbursement-readiness）

deploy/trialrun/preflight-remote.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+fail() {
+  echo "[remote-preflight][ERROR] $1" >&2
+  exit 1
+}
+
+for key in REMOTE_DIR REMOTE_ENV_FILE COMPOSE_FILE POSTGRES_DATA_DIR STORAGE_HOST_DIR DEPLOY_DATA_MODE SYNC_ENV; do
+  [[ -n "${!key:-}" ]] || fail "缺少 $key"
+done
+
+if [[ "$DEPLOY_DATA_MODE" == "existing" ]]; then
+  [[ -d "$REMOTE_DIR" \
+    && -f "$REMOTE_DIR/server/package.json" \
+    && -f "$REMOTE_DIR/$COMPOSE_FILE" ]] \
+    || fail "existing 模式要求 REMOTE_DIR 是现存仓库根目录"
+  [[ -f "$POSTGRES_DATA_DIR/PG_VERSION" && -d "$STORAGE_HOST_DIR" ]] \
+    || fail "existing 模式的数据目录合同未满足"
+fi
+
+if [[ "$SYNC_ENV" == "0" ]]; then
+  [[ -f "$REMOTE_ENV_FILE" && ! -L "$REMOTE_ENV_FILE" ]] \
+    || fail "SYNC_ENV=0 要求同步前已有普通远端 .env 文件"
+fi
+
+echo "[remote-preflight][PASS] 远端仓库、环境与数据合同通过"