# Tokio Task Group Review

## Scope

- Issue: #21
- Milestone: 0.2.0
- Changed surface: new `bluetape-rs-async` crate and root facade feature
- External reference: Tokio 1.49 documentation for `JoinSet`, `abort_all`, and
  shutdown by aborting then draining `join_next`

## 7-Tier Review

| Tier | Result | Evidence |
| --- | --- | --- |
| API contract | Pass | `try_map_bounded` defines first-error abort/drain behavior; `map_bounded_collect` defines collect-all operation result behavior. |
| Rust idioms | Pass | Uses `Result`, typed errors, `JoinSet`, `Send + 'static` task boundaries, ordered value results, and public Rustdoc examples. |
| Cancellation behavior | Pass | First operation error and Tokio join failure call `abort_all` and drain remaining tasks. |
| Bounds | Pass | Rejects zero and excessive concurrency with typed errors. |
| Documentation | Pass | README, README.ko, WIP, crate README, and Rustdoc describe scope and exclusions. |
| Tests | Pass | Unit tests cover order, bound enforcement, sibling abort/drain, collect-all results, invalid bounds, and join failure drain. |
| Risk | Moderate | Adds a new production crate and facade feature; no default feature expansion. |

## Findings

- P0: 0
- P1: 0
- P2: 0
- P3: 0

## Validation

- Pass: `cargo fmt --all --check`
- Pass: `cargo check --workspace --all-targets --all-features --locked`
- Pass: `cargo test -p bluetape-rs-async`
- Pass: `cargo test --workspace --all-features --locked`
- Pass: `cargo clippy --workspace --all-targets --all-features --locked -- -D warnings`
- Pass: `RUSTDOCFLAGS="-D warnings" cargo doc --workspace --no-deps --locked`
- Pass: `git diff --check`
