The ADR-101 (#82) implementation actually depends on part of #81 being implemented first. My recommendation's to implement this on a feature branch (feature/adr101-pull-companion) based off of main, which we can later reconcile with #95.

The following parts of the gRPC API from #81 need to be implemented as part of this PoC:

• grpc: Add base gRPC server with version service #818
• ADR-101: Implement gRPC BlockService #1094
• ADR-101: Implement gRPC BlockResultsService #1095
• gRPC: Add endpoint to trigger indexer pruning #1258

The following issues are exclusively related to ADR-101 and need to be implemented:

• ADR-101: Implement gRPC PruningService #1097
  • ADR-101: Implement block and block results pruning mechanism #1096
• ADR101 - Implement metrics to monitor data companion requests #1232
• docs: How to run a data companion and use the pruning API #1296