preparelisted
Install: claude install-skill mik2win/foureyes
# Pre-Implementation Analysis: $ARGUMENTS
Analyze BEFORE implementing. Do NOT write production code — only analyze, plan, and
(on confirmation) save decomposed plans. Previous step: `/analyst` (clarify requirements).
Next step: `/implement` (one invocation per subtask file).
**Input is one card / one coherent change — check the tier before Phase 0.** A whole-surface audit
or a program that plausibly yields 20+ cards ("review every screen", "audit this whole area") is
**tier 1**, and this skill is tier 2: run **`/prompt-master`**'s program pass first (breadth sweep →
`00-report.md` + `evidence/` + `cards/NN-<slug>.md` + `RUN-ORDER.md`, stopping before any
implementation), then come back here **one card at a time**. Decomposing a surface directly into
waves skips the discovery that decides which cards are worth cutting at all.
> **Risky work → suggest plan mode.** For a change the user flags as risky (production data,
> irreversible migrations, wide blast radius), recommend running the `/implement` session
> under Claude Code's built-in **plan mode** (plan approval before any edit) — it is the
> harness-level twin of this skill's plan-first pipeline: the kit plans the work, plan mode
> gates the execution. `/rewind` checkpoints add per-edit undo on top.
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## Deliver, don't halt — ask only when the choice is material (governing rule)
This skill's job is to hand back the **finished analysis + plan**. An undertold detail must never
end the run at "tell me (a)/(b)/(c)". Sor