Project Structure

The project uses Cargo workspaces.

Project structure

Cargo Workspace

The workspace defined in Cargo.toml contains three members:

[workspace]
members = [
    "common",
    "program",
    "client",
]

Crate	Path	Purpose
`program`	`program/`	The on-chain Solana counter program (BPF)
`client`	`client/`	Rust CLI client that invokes the on-chain program
`common`	`common/`	Shared types (structs, enums) used by both program and client

For experimentation, tweak files under program/, then rebuild and redeploy the on-chain program before re-running the client.