Parallel agent delivery

Parallelism is a property of the work, not a preference. Establish it before dispatching.

When it is safe

All three must hold:

1. Disjoint write surfaces — no two agents touch the same file. Not "unlikely to conflict"; provably disjoint.
2. No sequential dependency — none needs another's output to start.
3. Independently verifiable — each result can be judged on its own.

Fail any one and run sequentially. Two agents editing one file produces a merge conflict at best and a silent lost update at worst.

Dispatching