安装 PostgreSQL 插件

从 gemini-cli-extensions/postgres 安装 postgres@postgres，通过 POSTGRES_* 参数连接数据库。本地 MCP 服务名为 postgresql。

export POSTGRES_DATABASE=YOUR_POSTGRES_DATABASE
export POSTGRES_USER=YOUR_POSTGRES_USER
export POSTGRES_PASSWORD=YOUR_POSTGRES_PASSWORD

codex plugin marketplace add gemini-cli-extensions/postgres
codex plugin add postgres@postgres
codex mcp list

# 可选：
# export POSTGRES_HOST=YOUR_POSTGRES_HOST
# export POSTGRES_PORT=YOUR_POSTGRES_PORT
# export POSTGRES_QUERY_PARAMS=YOUR_POSTGRES_QUERY_PARAMS
# codex plugin marketplace upgrade postgres

# 不要：
# plugin install postgres@postgres
# plugin add postgres@data-agent-kit
# /plugin install postgres@postgres
# gemini extensions install https://github.com/gemini-cli-extensions/postgres
# plugin add cloud-sql-postgresql@data-agent-kit
# plugin add alloydb@data-agent-kit
# export POSTGRES_PROJECT
# export CLOUD_SQL_POSTGRES_PROJECT
# codex mcp login postgresql
# command = "./PATH/TO/toolbox"