build-unplanned

Build Unplanned Feature

Thin orchestrator for ad-hoc feature development without existing task definitions. Delegates to plan-task (blurb mode), implement-task, and validate.

Token Discipline

This skill orchestrates long multi-agent workflows. Every turn re-reads the full context window, so unnecessary turns are expensive.

1. No narration turns. Do not output text-only turns like "Let me understand your feature" or "Now I'll dispatch implementation." Combine text with a tool call in the same turn, or skip the text entirely.
2. Batch tool calls. When multiple tool calls are independent, issue them all in one turn.
3. No waiting updates. Do not output "Waiting for results..." turns. Wait silently until results arrive.
4. Keep context lean. Do not read file contents you won't use directly. Pass file paths to subagents and let them read in their own context windows.

Pre-flight: Model Recommendation

Your current effort level is {{effort_level}}.

Skip this step silently if effort is high, xhigh, or max (the scale is low < medium < high < xhigh < max, so xhigh and max are already above high) AND you are Sonnet or Opus. If effort is low or medium (i.e. below high), you MUST show the recommendation prompt — regardless of model. If you are not Sonnet or Opus, you MUST show the recommendation prompt — regardless of effort level.

Otherwise → use AskUserQuestion:

{
  "questions": [{
    "question": "Feature development benefits from consistent multi-domain reasoning.\n\nRecommended: Sonnet or Opus at high effort.\n\nTo switch: cancel, run `/effort high` (and `/model sonnet` if on Haiku), then re-invoke.",
    "header": "Effort check",
    "options": [
      { "label": "Continue anyway" },
      { "label": "Cancel — I'll switch first" }
    ],
    "multiSelect": false
  }]
}

If the user selects "Cancel — I'll switch first": output the switching commands and stop. Do not proceed with the skill.