feat(memos): add pgsql sidecar and unify db port

- Add PostgreSQL container to local and prod stacks with healthcheck
- Change external DB port from 5432 to 15432 in all env configs
- Rename env-lkc.cnf to db-lkc.cnf for consistency
- Add db-local.cnf for local PostgreSQL deployment

memos/prod.stack.yml

@@ -1,7 +1,9 @@
 # path:: mkdir -pv /data/volumes/memos/data
-# run-61:: docker compose -p memos --env-file ./memos/env.cfg --env-file ./memos/db-61.cnf  -f ./memos/prod.stack.yml up -d
+# pull:: docker compose -p memos --env-file ./memos/env.cfg -f ./memos/prod.stack.yml pull
+# run-61::  docker compose -p memos --env-file ./memos/env.cfg --env-file ./memos/db-61.cnf  -f ./memos/prod.stack.yml up -d
 # run-184:: docker compose -p memos --env-file ./memos/env.cfg --env-file ./memos/db-184.cnf  -f ./memos/prod.stack.yml up -d
 # run-lkc:: docker compose -p memos --env-file ./memos/env.cfg --env-file ./memos/env-lkc.cnf  -f ./memos/prod.stack.yml up -d
+# run-local:: docker compose -p memos --env-file ./memos/env.cfg --env-file ./memos/db-local.cnf -f ./memos/prod.stack.yml up -d
 
 services:
   memos:
@@ -11,8 +13,8 @@ services:
       - /etc/timezone:/etc/timezone:ro
       - /etc/localtime:/etc/localtime:ro
     ports:
-      - '5230:5230'
-    container_name: memos
+      - "5230:5230"
+    container_name: memos_app
     restart: always
     environment:
       - MEMOS_DRIVER=${DB_DRIVER}
@@ -21,5 +23,33 @@ services:
       #- MEMOS_DRIVER=mysql
       #- MEMOS_DSN=root:password@tcp(localhost)/memos_prod
       - TZ=Asia/Shanghai
-#volumes:
-#  data:
+
+  pgsql:
+    image: ${PGSQL_IMAGE_TAG:-postgres:18.4}
+    container_name: memos_pgsql
+    restart: always
+    shm_size: 256mb
+    environment:
+      - POSTGRES_USER=${DB_USER:-postgres}
+      - POSTGRES_PASSWORD=${DB_PASSWORD}
+      - POSTGRES_DB=${DB_DATANAME:-memos-db}
+      - POSTGRES_HOST_AUTH_METHOD=scram-sha-256
+      - TZ=Asia/Shanghai
+    volumes:
+      - pgsql_data:/var/lib/postgresql/data
+      - /etc/timezone:/etc/timezone:ro
+      - /etc/localtime:/etc/localtime:ro
+    ports:
+      - "${DB_POST:-15432}:5432"
+    healthcheck:
+      test:
+        [
+          "CMD-SHELL",
+          "pg_isready -U ${DB_USER:-postgres} -d ${DB_DATANAME:-memos-db}",
+        ]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+volumes:
+  pgsql_data: