feat: set up dev database

[cherman23]

Partial completion of the containerizing the application. This PR creates a dev database using docker-compose. The dev database relies on env variables for the user and password.

todo:

• Because the docker compose up command runs in detached mode, currently you have to run the command docker compose down to prevent errors after stopping the container. Maybe better dev x if two separate commands for starting dev.

Related Issues: #9

[Copilot]

Pull Request Overview

This PR sets up a development database environment using Docker Compose to containerize PostgreSQL for local development. The changes enable developers to quickly spin up a database instance with environment-based configuration and run database migrations automatically as part of the development workflow.

• Adds Docker Compose configuration for PostgreSQL 17 with persistent data storage
• Modifies the dev script to automatically start the database and run migrations
• Includes Prisma migration files for the initial database schema

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
docker-compose.yaml	Defines PostgreSQL service with environment variables for credentials and persistent volume
package.json	Updates dev script to start database and run migrations before starting Next.js
prisma/migrations/migration_lock.toml	Prisma migration lock file specifying PostgreSQL provider
prisma/migrations/20250913181608_init/migration.sql	Initial database schema migration with all tables and relationships

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