[WIP] Refactor gRPC server by moving Library Service to new crate

[Copilot]

• Create new packages/library-service crate structure
  • Create Cargo.toml with workspace dependencies
  • Create project.json for NX integration
  • Create README.md with documentation
• Move library service implementation from grpc-service/src/library/ to new crate
  • Copy mod.rs as handlers.rs, delete_handlers.rs, metadata_handlers.rs, update_handlers.rs
  • Copy content_resolver/ module (mod.rs, game_resolver.rs, platform_resolver.rs, parser.rs, tests.rs)
  • Add job_manager.rs (moved from grpc-service/src/jobs/)
  • Skip utils.rs (dead code with broken import)
• Export library_service_server() function from the new crate
• Update grpc-service crate
  • Remove library module
  • Remove local job_manager.rs (now in library-service)
  • Add dependency on retrom-library-service
  • Update lib.rs to use new crate's library_service_server()
  • Update jobs/mod.rs to use JobManager from library-service
  • Update metadata/mod.rs to use JobManager and JobError from library-service
  • Update README.md to reference library-service
• Update workspace configuration
  • Add retrom-library-service to root Cargo.toml workspace members
  • Add retrom-library-service as workspace dependency
• Verify build and tests pass
• Run code review and address feedback

Original prompt

Refactor the gRPC server implementation by moving the Library Service out of the monolithic grpc-service crate into a new workspace crate named library-service.

Requirements:

• Create a new crate: packages/library-service
• Move related code (handlers, modules, utilities) from packages/grpc-service/src/library/ into library-service.
• In library-service, export a function (e.g., library_service_server) returning LibraryServiceServer configured with a constructed handler.
• Update all dependencies to use [workspace] resolution where possible.
• Remove the library service implementation from the grpc-service crate. In grpc-service, update routing to use the library server from the new crate.
• Add documentation and ensure README.md reflects the change.
• Ensure build and test pass for the workspace.
• Update root workspace Cargo.toml and relevant package Cargo.toml files to include and use the new crate.

References:

• [Design notes from chat]
• Existing handlers are in packages/grpc-service/src/library/.
• Proto types are in codegen.
• Main workspace path for new crate: packages/library-service.

This PR should only migrate the Library Service as a representative example, setting the foundation for similar future extractions for other services.

This pull request was created as a result of the following prompt from Copilot chat.

Refactor the gRPC server implementation by moving the Library Service out of the monolithic grpc-service crate into a new workspace crate named library-service.

Requirements:

• Create a new crate: packages/library-service
• Move related code (handlers, modules, utilities) from packages/grpc-service/src/library/ into library-service.
• In library-service, export a function (e.g., library_service_server) returning LibraryServiceServer configured with a constructed handler.
• Update all dependencies to use [workspace] resolution where possible.
• Remove the library service implementation from the grpc-service crate. In grpc-service, update routing to use the library server from the new crate.
• Add documentation and ensure README.md reflects the change.
• Ensure build and test pass for the workspace.
• Update root workspace Cargo.toml and relevant package Cargo.toml files to include and use the new crate.

References:

• [Design notes from chat]
• Existing handlers are in packages/grpc-service/src/library/.
• Proto types are in codegen.
• Main workspace path for new crate: packages/library-service.

This PR should only migrate the Library Service as a representative example, setting the foundation for similar future extractions for other services.

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