/plan-create

Think before you build. This skill runs a phased planning protocol and produces a PLAN.md artifact. No implementation code is written. The plan is the deliverable.

Structured execution spec: protocol.yon. Read it for the canonical rules, ordered phases, gate severity, and recovery handlers. This file is human-readable explanation, the PLAN.md template, and the Fast Mode reference. The two must stay in sync — if you edit one, update the other and refresh the @STAMP date.

Step 0 — Choose Execution Mode

Before starting, set mode. State your choice out loud with the reason.

• Full mode — the unconditional default. Use for everything unless you can state a specific reason Fast mode applies.
• Fast mode — opt-in only. To use it, you must name the specific reason: single unit of work with no cross-component impact and no external dependencies. If you cannot name a specific reason, use Full mode. Fast mode skips steps marked [full only] — see Fast Mode Reference at the bottom.

When in doubt, use Full mode. If the task touches auth, data, external services, multiple files, or anything you'd be nervous to get wrong, that's Full mode regardless of how it's phrased.

Phase 1 — Pre-Flight

Goal: load available context before designing anything.