fix(dev): 兼容 Compose 数据库容器启动

保留显式数据库连接配置，自动识别 Compose PostgreSQL 容器及宿主机端口，并在容器不存在时跳过不适用的 Docker 建库。\n\n验证：bash -n；ShellCheck；scripts/create-database.sh；pnpm dev 真实启动 API 与 Web

scripts/create-database.sh

@@ -1,6 +1,8 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
+PROJECT_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+
 if [[ -n "${AI_GATEWAY_PG_CONTAINER:-}" ]]; then
   CONTAINER="$AI_GATEWAY_PG_CONTAINER"
 elif docker inspect easyai-pgvector >/dev/null 2>&1; then
@@ -8,7 +10,15 @@ elif docker inspect easyai-pgvector >/dev/null 2>&1; then
 elif docker inspect postgres >/dev/null 2>&1; then
   CONTAINER="postgres"
 else
-  CONTAINER="easyai-pgvector"
+  CONTAINER="$(
+    docker compose -f "${PROJECT_ROOT}/docker-compose.yml" ps -q postgres 2>/dev/null \
+      | head -n 1
+  )"
+fi
+
+if [[ -z "$CONTAINER" ]] || ! docker inspect "$CONTAINER" >/dev/null 2>&1; then
+  echo "[ai-gateway] no PostgreSQL Docker container found; set AI_GATEWAY_PG_CONTAINER or create the database through the configured connection" >&2
+  exit 1
 fi
 PGUSER="${AI_GATEWAY_PG_USER:-easyai}"
 DB_NAME="${AI_GATEWAY_DATABASE_NAME:-easyai_ai_gateway}"