Dependencies

## format

```bash
cargo fmt
```

## lint

```meta
depends = ["format"]
```

```bash
cargo clippy
```

## test

```meta
depends = ["lint"]
```

```bash
cargo test
```

mq-task test runs format → lint → test.

• Multiple dependencies: depends = ["format", "lint"]
• A shared dependency runs only once
• Circular dependencies are reported as an error