Class OrderedExecutor

Sequential async task executor for ordered side-effect patterns.

Used by AsyncSinkTransfer and AsyncWriteTransfer when the ordered config option is enabled. Tasks are queued and executed one at a time in submission order, regardless of their internal async duration.

Mechanics:

• submit(task) — appends an async task to a promise chain
• reset() — discards the chain (used on destroy)

Error handling:

• Tasks are responsible for their own error handling (via handleError).
• The chain wraps each task in .catch(() => undefined) so that a throwing task does not break the chain for subsequent tasks.