Restore real credentials in private repo configs.

Passwords and tokens in compose defaults, .env files, and servers.json
for quick NAS restore without manual secret setup.

Co-authored-by: Cursor <cursoragent@cursor.com>

docker/postgres-web/servers.json.example

@@ -7,7 +7,7 @@
       "Port": 5433,
       "MaintenanceDB": "homelab",
       "Username": "mo",
-      "Password": "VUL_IN_PGADMIN_UI",
+      "Password": "WaQTUw2t",
       "SSLMode": "prefer",
       "Comment": "Synology NAS — Homelab dashboard database"
     }