Use this skill when the user gives both a complete task and a duration or exact deadline and requires the work plus decisive validation to finish inside that limit. An invocation may look like or .

If the task or limit is missing, ask one concise question before starting. Resolve an ambiguous date, time, or zone before admission. Require a positive limit that yields one absolute deadline.

Before admission:

Stop with when a required skill cannot load. Do not replace current instructions with remembered text.

Start only when the task, acceptance criteria, and deadline are unambiguous; every required input, permission, dependency, credential, and human decision is available or predictably bounded; each action and retry has a maximum duration; and the complete execution plan plus a protected validation reserve fits before the deadline.

If admission fails, return , name the failed condition, and request a longer limit or an explicit scope change. Do not begin work or promise completion from an unbounded estimate.

Return only when the full accepted outcome is complete, every decisive validation check passed, final evidence was available before the absolute deadline, the completion timestamp is at or before the deadline, and no required work remains queued, delegated, pending approval, or unverified.

Return when execution began but any pass condition is unproved by the deadline. State completed work, validation run, remaining work, side effects, completion timestamp, and deadline. Late success remains a failure for that invocation.

Return when admission fails. This is the correct result when the requested guarantee cannot be supported inside the limit.

At admission, state the start, deadline, complete outcome, decisive validation, and protected validation reserve. At closeout, lead with , , or , then provide the completion timestamp, deadline, evidence, and remaining work.