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Spec By Example

ASecurity

承接新的 plan package 中的 `spec.md`,把需求收斂成 plan-side `features/acceptance/*.feature`。此 skill 只寫入本次 plan package(`specs/plans/NNN-*/`,clade lifecycle repo 為 `specs/plans/<work-id>/`)的 `features/acceptance/**`,不修改 `specs/truth/**`,也不更新 `truth-delta.md`。

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  • Added September 24, 2026
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Scanned September 24, 2026

npx -y skills add Charles5277/nuxt-supabase-starter --skill spec-by-example --agent claude-code

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SKILL.md
---
name: spec-by-example
description: >-
  承接新的 plan package 中的 `spec.md`,把需求收斂成 plan-side
  `features/acceptance/*.feature`。此 skill 只寫入本次 plan
  package(`specs/plans/NNN-*/`,clade lifecycle repo 為 `specs/plans/<work-id>/`)的
  `features/acceptance/**`,不修改 `specs/truth/**`,也不更新 `truth-delta.md`。
metadata:
  clade:
    invocation: explicit
---
<!-- LOCKED: mirrored from Waterball-Software-Academy/aixbdd@bc8fdebe2d30db384f77911aaed81888ad03bf5f via scripts/sync-upstream-mirrors.ts — edit upstream, never here -->
<!-- clade-targets: claude,codex,cursor -->

# Spec By Example

`spec-by-example` 產出 PM 可 review 的總驗收 Gherkin。這一層仍屬於 plan:它描述本次迭代希望達成的業務旅程,不是目前系統的 interface truth。

# SOP

## Phase 1 -- 對齊 plan spec 與輸出位置

1. READ 讀取使用者需求、呼叫者要求、目標 plan package 的 `spec.md`、既有 `features/acceptance/` 內容,以及必要的 `specs/truth/**` 高層現況。
2. READ 讀取 `rules/輸出位置與acceptance切檔判準.md`,確認 acceptance feature files 必須輸出到當前 plan package。
3. WRITE 若 `specs/plans/NNN-<slug>/features/acceptance/` 尚不存在,建立該目錄。
   - 命中 clade lifecycle repo 判準(本次 plan package 的 `plan.md` frontmatter 同時含 `work_id:` 與 `truth_baseline:`;判準只看那兩個鍵)時,目錄換成 `specs/plans/<work-id>/features/acceptance/`:本次 plan package 是 `flow plan open` 鑄出的 `specs/plans/<work-id>/`,NEVER 另建 `NNN-<slug>` 目錄。

## Phase 2 -- 收斂驗收旅程與需求缺口

1. READ 讀取 `rules/gherkin-驗收句型與結構判準.md`、`templates/acceptance.feature`、`templates/acceptance.example.feature`、`templates/電商範例/features/acceptance/訂單成立與付款超時.feature`、`templates/電商範例/features/acceptance/庫存預留與超賣防護.feature`、`templates/電商範例/features/acceptance/折扣疊加與互斥.feature`、`templates/電商範例/features/acceptance/滿額贈品與條件取消.feature` 與 `templates/電商範例/features/acceptance/運費分區與免運判定.feature`,確認 acceptance Gherkin 的顆粒度、句型、Rule / Example 邊界與完成樣貌。
2. THINK 依 `spec.md` 的 User Stories、Acceptance Criteria、邊界情況與全域需求,收斂少量但關鍵的 Journey 型驗收流程。
3. READ 若需求存在會改變 Journey、規則歸屬、驗收結果或切檔的高影響缺口,讀取 `rules/缺口標記與Clarify升級判準.md`。
4. DELEGATE 若仍有高影響缺口,呼叫 `/clarify`;未收斂前停止,不自行假設答案。

## Phase 3 -- 產出 acceptance Gherkin

1. WRITE 在目標 plan package 的 `features/acceptance/` 下建立或更新 feature files;Gherkin 維持業務語言,不拆前端 / 後端,也不產出 `dsl.md`。
2. WRITE 將高影響未定事項直接標在對應 feature 的規則或步驟旁,格式固定為 `# [need clarification] ...`。
3. READ 回頭檢查每份 feature 是否與 `spec.md` 一致、可被 PM 直接閱讀,且不與已知 truth 明顯衝突;若不符合,立即修正或升級 clarify。

## Phase 4 -- 交付後續 handoff

1. WRITE 向使用者回報寫入的 acceptance feature files、已澄清決策、剩餘 `# [need clarification]`,以及是否可進入 `/system-analysis` 或 `/dsl-refine`。

Files in this skill

  • SKILL.md3.4 KB
  • rules/gherkin-驗收句型與結構判準.md7.5 KB
  • rules/缺口標記與Clarify升級判準.md5.5 KB
  • rules/輸出位置與acceptance切檔判準.md1.9 KB
  • templates/acceptance.example.feature1.3 KB
  • templates/acceptance.feature1.1 KB
  • templates/電商範例/features/acceptance/庫存預留與超賣防護.feature1.9 KB
  • templates/電商範例/features/acceptance/折扣疊加與互斥.feature3.1 KB
  • templates/電商範例/features/acceptance/滿額贈品與條件取消.feature1.8 KB
  • templates/電商範例/features/acceptance/訂單成立與付款超時.feature3.5 KB
  • templates/電商範例/features/acceptance/運費分區與免運判定.feature2.3 KB

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