feat: turbostarter boilerplate

Production-ready Next.js boilerplate with:
- Runtime env validation (fail-fast on missing vars)
- Feature-gated config (S3, Stripe, email, OAuth)
- Docker + Coolify deployment pipeline
- PostgreSQL + pgvector, MinIO S3, Better Auth
- TypeScript strict mode (no ignoreBuildErrors)
- i18n (en/es), AI modules, billing, monitoring

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.context/turbostarter-framework-context/sections/web/database/migrations.md

@@ -0,0 +1,49 @@
+---
+title: Migrations
+description: Migrate your changes to the database.
+url: /docs/web/database/migrations
+---
+
+# Migrations
+
+You have your schema in place, and you want to apply your changes to the database. TurboStarter provides you a convenient way to do so with pre-configured CLI commands.
+
+## Generating migration
+
+To generate a migration, from the schema you need to run the following command:
+
+```bash
+pnpm with-env turbo db:generate
+```
+
+This will create a new `.sql` file in the `migrations` directory.
+
+<Callout>
+  Drizzle will also generate a `.json` representation of the migration in the `meta` directory, but it's for its internal purposes and you shouldn't need to touch it.
+</Callout>
+
+## Applying migrations
+
+To apply the migrations to the database, you need to run the following command:
+
+```bash
+pnpm with-env pnpm --filter @turbostarter/db db:migrate
+```
+
+This will apply all the migrations that have not been applied yet. If any conflicts arise, you can resolve them by modifying the generated migration file.
+
+## Pushing changes
+
+To push changes directly to the database, you can use the following command:
+
+```bash
+pnpm with-env pnpm --filter @turbostarter/db db:push
+```
+
+This lets you push your schema changes directly to the database and omit managing SQL migration files.
+
+<Callout type="warn" title="Use with caution!">
+  Pushing changes directly to the database (without using migrations) could be risky. Please be careful when using it; we recommend it only for local development and local databases.
+
+  [Read more about it in the Drizzle docs](https://orm.drizzle.team/kit-docs/overview#prototyping-with-db-push).
+</Callout>