Covers both dev paths (plain cargo vs nix develop/build/flake check),
LSP setup via the fenix toolchain's RUST_SRC_PATH, how nix/rust.nix
is shared between the package build and dev shell, where to add
unit vs integration tests, and how to use the rename script. Includes
a note to keep it updated as the template grows into real functionality.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018ALEXkc7pTro7tF1WcUuKb
