Update postgres migration instruction and file location

README.md

@@ -134,13 +134,13 @@ psql -h localhost -p 5435 -U postgres
 
 When the realm server starts up it will automatically run DB migrations that live in the `packages/realm-server/migrations` folder. As part of development you may wish to run migrations manually as well as to create a new migration.
 
-To create a new migration, from `packages/realm-server`, execute:
+To create a new migration, from `packages/postgres`, execute:
 
 ```
 pnpm migrate create name-of-migration
 ```
 
-This creates a new migration file in `packages/realm-server/migrations`. You can then edit the newly created migration file with the details of your migration. We use `node-pg-migrate` to handle our migrations. You can find the API at https://salsita.github.io/node-pg-migrate.
+This creates a new migration file in `packages/postgres/migrations`. You can then edit the newly created migration file with the details of your migration. We use `node-pg-migrate` to handle our migrations. You can find the API at https://salsita.github.io/node-pg-migrate.
 
 To run the migration, execute:
 
@@ -154,7 +154,7 @@ To revert the migration, execute:
 pnpm migrate down
 ```
 
-Boxel also uses SQLite in order to run the DB in the browser as part of running browser tests (and eventually we may run the realm server in the browser to provide a local index). We treat the Postgres database schema as the source of truth and derive the SQLite schema from it. Therefore, once you author and apply a migration, you should generate a new schema SQL file for SQLite. To generate a new SQLite schema, from `packages/realm-server`, execute:
+Boxel also uses SQLite in order to run the DB in the browser as part of running browser tests (and eventually we may run the realm server in the browser to provide a local index). We treat the Postgres database schema as the source of truth and derive the SQLite schema from it. Therefore, once you author and apply a migration, you should generate a new schema SQL file for SQLite. To generate a new SQLite schema, from `packages/postgres`, execute:
 
 ```
 pnpm make-schema

packages/host/config/environment.js

@@ -103,7 +103,7 @@ function getLatestSchemaFile() {
     ['development', 'test'].includes(process.env.EMBER_ENV)
   ) {
     throw new Error(
-      `The sqlite schema file is out of date--please regenerate the sqlite schema file using \`pnpm make-schema\` in the realm server`,
+      `The sqlite schema file is out of date--please regenerate the sqlite schema file using \`pnpm make-schema\` in the postgres package`,
     );
   }
   return path.join(schemaDir, latestSchemaFile);

packages/postgres/package.json

@@ -9,7 +9,8 @@
     "@types/pg": "^8.11.5",
     "fs-extra": "^10.1.0",
     "node-pg-migrate": "^6.2.2",
-    "pg": "^8.11.5"
+    "pg": "^8.11.5",
+    "ts-node": "^10.9.1"
   },
   "devDependencies": {
     "concurrently": "^8.0.1",