+ postgresql server & pgadmin

README.md

@@ -113,6 +113,24 @@ Optional MCP server so Cursor can query the `db` container over the Docker netwo
 
 First image build can take a while (upstream MariaDB MCP dependencies).
 
+### PostgreSQL, pgAdmin, Postgres MCP
+
+Services `pgsql`, `pgadmin`, `mcp-postgres` are described in `docker-compose.base.yml`; copy them from
+`docker-compose.postgres.yml.example` into your `docker-compose.yml` (volumes `database-pgsql` and `pgadmin` too).
+
+`dc up -d pgsql pgadmin mcp-postgres`
+
+- `pgsql` — official `postgres:18` image. Port `5432`, user, password and database `intai`.
+  Since 18 the data lives in `/var/lib/postgresql/<major>/docker`, so the volume is mounted at `/var/lib/postgresql`.
+  Another major version does not start on the same volume — dump and restore.
+- `pgadmin` — pgAdmin 4 in desktop mode, no login: http://pgadmin.intai.localhost (or the port from the example). The `intai` server comes from `config/pgadmin/servers.json` on every start; the password (`intai`) is asked once, tick "Save password".
+  Register the server once: host `pgsql`, port `5432`, user `intai`, password `intai`.
+- `mcp-postgres` — [Postgres MCP Pro](https://github.com/crystaldba/postgres-mcp), SSE on
+  `http://127.0.0.1:${MCP_POSTGRES_PORT:-8766}/sse`.
+- `./bash/psql.sh [database] [user]` — psql inside the container.
+
+Transfer of the intai database from MariaDB and its verification: `docs/PostgreSQL.md` in the intai project.
+
 ### Workspace
 
 For execute composer update|install or nodejs operations, also yarn, npm and all node-builds.