D1 - D1 migrations support nested layouts via `migrations_pattern`

Summary

You can now configure Wrangler to discover D1 migration files in nested directory layouts (for example layouts produced by Drizzle) using the new migrations_pattern field in your D1 binding. wrangler d1 migrations apply will use this glob (relative to your Wrangler config) to find and apply migrations.

Key Points

• Configure the D1 binding with migrations_pattern (a glob) to match nested files, e.g. set "migrations_pattern": "migrations/*/migration.sql" in your binding.
• The pattern is evaluated relative to the Wrangler config file. The default remains ${migrations_dir}/*.sql, so existing projects are unaffected.
• Each migration name recorded in the D1 migrations table is stored as the path relative to migrations_dir.
• Typical workflow: update your D1 binding in wrangler.toml/wrangler.json, then run wrangler d1 migrations apply as usual.

For implementation details and examples, see the D1 migrations documentation.