REMU

Create or maintain a lazy-built native .so library that is hash-checked and dlopen'd at runtime, following the spike / nzea pattern. Use when adding a new simulator backend or external C/C++ dependency that should not block cargo build.

Create or update flow/ directories (command.rs, option.rs, generic.rs) for crates that need data-flow conventions. Use when a crate needs runtime commands, initialization options, or compile-time generic configuration.

Add a new ISA variant (e.g., RV64I, RV32IMF) to the project. Covers updating the for_each_isa! table, dispatch macros, and IsaKind enums across remu_isa, remu_harness, remu_simulator_nzea, and remu_boot.

Create or reorganize Rust modules following the remu Module Declaration Constitution. Use when adding a new .rs file, moving files, or fixing bare mod violations.

Scaffold a new Rust crate in the remu workspace following all conventions. Use when creating a new library crate, simulator backend, or utility crate.