The volume for the db service is defined as ${serviceName}_data, but the named volume at the root of the file is db_data. The serviceName variable is not defined in this file's context, so this will result in a volume named _data being created, and the db_data volume will be unused. This will cause the database to lose all its data if the container is removed and recreated.

      - db_data:/var/lib/postgresql/data

The versions specified for drizzle-orm (^0.44.7) and drizzle-kit (^0.31.7) do not appear to exist in the public npm registry. This will likely cause the pnpm install command to fail for anyone without access to a private registry where these versions might be hosted. Please verify that these versions are correct. If they are typos, they should be corrected to valid, publicly available versions.

The auth variable is assigned a value here but it is never declared within the scope of the test suite. This will cause a ReferenceError when running the tests. It should be declared with let auth: any; at the beginning of the describe block.

The database connection check is performed asynchronously with .then() and .catch(), but the build function for the services:db provider is synchronous and returns immediately. This creates a race condition where the application might start handling requests before the database connection is confirmed to be healthy. The build function should be async and await the connection check to ensure the database is ready before the service is considered built.

    build: async ({ dependsOn }) => {
      const dbInstance = createDrizzle(dependsOn.env.DATABASE_URL, schema)
      try {
        await dbInstance.execute('SELECT 1')
        logger.log('Connected to database')
      } catch (err) {
        logger.withError(err).error('Failed to connect to database')
        exit(1)
      }
      return dbInstance
    },

The updatedAt columns in the session and account tables are defined as NOT NULL and have an $onUpdate hook, but they are missing a .defaultNow() call. This means that on INSERT, if a value for updatedAt is not explicitly provided, the database will try to insert NULL, which violates the NOT NULL constraint. You should add .defaultNow() to these columns for consistency with other tables and to prevent insertion errors.

Setting trustedOrigins: ['*'] disables CSRF protection provided by better-auth by allowing any origin. This is a significant security risk. While the CORS middleware in app.ts is configured correctly with getTrustedOrigin, this better-auth setting should also be made secure. You should use a specific list of trusted origins, preferably from an environment variable, and ensure a fallback is provided to prevent issues from undefined values.

The updatedAt columns in the character, avatarModel, and characterI18n tables are missing the $onUpdate hook. While the service layer currently handles updating this field manually, it's best practice to define this behavior at the schema level for consistency and to prevent accidental omissions in the future. Please add .$onUpdate(() => new Date()) to these columns.

The replyToMessageId and forwardFromMessageId columns in the messages table are defined as text but seem to reference another message's ID. For data integrity, these should be defined as foreign keys referencing messages.id. This would prevent dangling references where a message refers to a reply/forward that no longer exists.

This file duplicates a significant amount of schema and type definitions that also exist on the backend in apps/server/src/api/characters.schema.ts. This code duplication can lead to inconsistencies and maintenance overhead. Consider creating a shared package (e.g., packages/shared-types) within the monorepo to house these common types so they can be imported by both the frontend and backend.