Forward Derivation | 正向推演

Generate derived artifacts (BDD scenarios, TDD skeletons, ATDD tables) from approved SDD specifications.

從已批准的 SDD 規格生成衍生工件（BDD 場景、TDD 骨架、ATDD 表格）。

Subcommands | 子命令

Subcommand	Description	Output
all	Full derivation pipeline (BDD + TDD + IT + E2E + ATDD + Contracts)	.feature + .test.* + .it.test.* + .e2e.test.* + .md + .json
bdd	Generate BDD scenarios only	.feature
tdd	Generate TDD skeletons only	.test.*
it	Generate Integration test skeletons	.it.test.*
e2e	Generate E2E test skeletons	.e2e.test.*
atdd	Generate ATDD test tables	.md (Markdown tables)

Workflow | 工作流程

1. Read Spec - Analyze the input SPEC-XXX.md file | 分析規格檔案
2. Extract AC - Parse all Acceptance Criteria | 解析所有驗收條件
3. Generate Artifacts - Create BDD/TDD/ATDD outputs | 產生衍生工件
4. Verify - Ensure 1:1 mapping between AC and generated items | 驗證一對一對應

Anti-Hallucination Rules | 防幻覺規則

Rule	Description	說明
1:1 Mapping	Every AC has exactly one test/scenario	每個 AC 對應一個測試
Traceability	All artifacts reference Spec ID and AC ID	所有工件引用規格與 AC 編號
No Invention	Do not add scenarios not in the spec	不新增規格外的場景

Generated Artifact Tags | 產生工件標籤

Tag	Meaning	含義
[Source]	Direct content from spec	直接來自規格
[Derived]	Transformed from source	從來源轉換
[Generated]	AI-generated structure	AI 產生的結構
[TODO]	Requires human implementation	需人工實作

Usage | 使用方式

/derive all specs/SPEC-001.md           - Full derivation pipeline | 完整推演管線
/derive bdd specs/SPEC-001.md           - Derive BDD scenarios only | 僅推演 BDD 場景
/derive tdd specs/SPEC-001.md           - Derive TDD skeletons only | 僅推演 TDD 骨架
/derive it specs/SPEC-001.md            - Derive Integration test skeletons | 推演整合測試骨架
/derive e2e specs/SPEC-001.md           - Derive E2E test skeletons | 推演 E2E 測試骨架
/derive atdd specs/SPEC-001.md          - Derive ATDD tables | 推演 ATDD 表格

Next Steps Guidance | 下一步引導

After /derive completes, the AI assistant should suggest:

測試工件已產生。建議下一步 / Test artifacts generated. Suggested next steps:

• 執行 /tdd 開始紅綠重構循環 ⭐ Recommended / 推薦 — Start Red-Green-Refactor cycle
• 執行 /bdd 細化 Gherkin 場景 — Refine Gherkin scenarios
• 檢查產生的 [TODO] 標記並補齊實作 — Review [TODO] markers and fill in implementations

Reference | 參考

• Detailed guide: guide.md
• Core standard: forward-derivation-standards.md

AI Agent Behavior | AI 代理行為

完整的 AI 行為定義請參閱對應的命令文件：/derive

For complete AI agent behavior definition, see the corresponding command file: /derive