This rewrite replaces a flat package (where each provider was a monolithic implementation wired into a shared activation service and ingest pipeline) with a declarative provider registration architecture. Each provider is now a self-contained package that registers its credentials, clients, operations, mappings, and webhooks through a builder pattern. The new runtime package handles the full integration lifecycle (credential resolution, client caching, operation dispatch, webhook routing) uniformly for all definitions. The old scattered concerns and somewhat naive approach has been wholesale replaced by a significantly more advanced, structured, and extensible framework. Identity for credentials, operations, and webhook events is now derived from go types rather than hand-assigned strings, making collisions a compile-time error instead of a runtime surprise - coupled with the declarative provider setup, we now have uniform definitions with collision-free guarantees.

You can see detailed information surrounding the new package architecture (and some rationale on the decisions around it) in the README.md in the package.