cargo-build-sbf

The Cargo subcommand that compiles Rust programs to Solana Bytecode Format (SBF). It invokes the Solana-specific LLVM toolchain (platform-tools) to produce an ELF binary deployable on-chain. Replaces the older `cargo build-bpf`. Typically invoked via `anchor build` which calls it internally. Output goes to `target/deploy/<name>.so`.