Sequel `:d1` adapter and Opal compatibility patches for Cloudflare D1. Pass a duck-typed D1 binding to `Sequel.connect(adapter: :d1, d1: binding)`. Includes `cloudflare-workers-migrate` to compile Sequel migration DSL to wrangler SQL.

Opal compatibility patches for upstream Sinatra, plus homura JWT / Cron / Queue extensions. Depends on homura-runtime. Consumers typically vendor sinatra and compile with Opal; this gem ships library Ruby only.