Writing Plans → <slug>-implementation-plan.md

사용자 질문 룰 (v2.0.3+) — 항상 AskUserQuestion

이 skill 흐름 안에서 사용자에게 질문할 일이 생기면 반드시 AskUserQuestion 도구로 호출한다. 산문으로 "~ 할까요?" 한 줄 던지지 마라.

Why

Notification 훅 (elicitation_dialog 매처) 이 알람을 발화하려면 도구 호출이 실제로 일어나야 함. 산문 질문은 훅이 못 잡아서 사용자가 놓침 (v1.1.8 신고 재발).

How to apply

• clarifying / Socratic / 모호점 확인 / 게이트 / 모드 선택 — 모두 포함
• 단답 yes/no 도 prose X → AskUserQuestion choices [yes, no] 사용
• 다중 선택은 enum choices 또는 multi-question batching (의미 결합 시 max 4 questions[])
• Socratic 자유 응답: AskUserQuestion 의 question 본문에 "자유롭게 답해주세요. 별도 옵션 선택 불필요" + dummy choice [알겠음] 1개 → 트리거만 발화, 응답은 다음 turn prose
• 예외: 본문 자체의 알람-friendly 안내문 (ℹ️ Auto-proceeding ...) 는 질문 아니라 안내 — 도구 호출 불필요

Other / 모호 응답 처리 (v2.1.1+)

사용자가 "Other" 자유 응답 또는 "모르겠음 / 이해 안 됨" 류 답변 catch 시 → 그 질문만 단독 재호출 + prose 설명 추가. 다음 단계 자동 진행 X (anchor 질문 강제 X 룰은 명확 yes/no 답변에만 적용).

Take <slug>-requirements.md + <slug>-tech-design.md as inputs and produce a comprehensive implementation plan (<slug>-implementation-plan.md) decomposed into bite-sized TDD tasks. The upstream superpowers patterns (exact file paths, complete code in every step, TDD cycle, no placeholders, frequent commits) are inherited as-is. intent-locked-workflow extends them with: change-history footer, structured "위험 코드 지점" section, and a verification gate after save.

예외 — --no-ask 플래그 (v2.5+)

사용자가 슬래시 명령에 --no-ask 토큰을 명시 한 경우에만 진입. 메인 자체 판단으로 활성화 X.

• 모든 사용자 질문을 prose (메인 turn 자유 텍스트) 로 처리
• AskUserQuestion 도구 호출 0 보장
• 게이트 자체는 살아 있음 — 사용자 prose 응답 기다림
• 알람 fire X (사용자가 명시 invoke 했으니 인지 가정)

skill 진입 시 1회 boilerplate

skill 진입 직후 다음 한 줄을 prose 로 출력:

ℹ️ --no-ask 모드 진입 — AskUserQuestion 도구 호출 X, 응답 알람 X. 백그라운드 작업 중이면 응답 시점을 직접 체크해주세요.

위험 명령 진입 직전 보강

critical 7 케이스 (파일 삭제 / git push --force / DB migration / mass commit / 외부 메시지 등) 실행 직전에는 다음 한 줄을 prose 로 출력:

⚠️ 위험 명령 진입 — 응답 기다림. 백그라운드 작업 중이면 직접 catch 해주세요.

⚠️ 마커 + 별도 줄로 일반 prose 보다 두드러지게.

Checklist

You MUST create a TaskCreate task for each of these items and complete them in order:

1. 입력 확인 — confirm both <slug>-requirements.md and <slug>-tech-design.md exist (HARD-GATE if either missing)
2. 파일 구조 윤곽 잡기 — which files are created/modified, with single-responsibility boundaries
3. 구현계획서 task 목록 작성 — each task = one TDD cycle (test → fail → impl → pass → commit), 2-5 minutes per step
4. 위험 코드 지점 (§2) 채우기 — every risk category from <slug>-tech-design.md §6 mapped to a concrete location + mitigation
5. 자체 점검 — spec coverage / placeholder scan / type consistency / 위험 coverage
6. 사양 정합성 검증 — main agent runs A+C verification on the plan via verifying-spec (Tolerance for missing skill)
7. 코드 블록 포맷 정리 — pre-review code-block prettify on the draft via code-pretty skill (Sonnet subagent). Runs AFTER verifying-spec passes and BEFORE generating-html. Targets only **수정 후**-labeled code blocks. Stops once first change-history entry is logged.
8. 문서 포맷 정리 (사용자 리뷰 전) — pre-review format pass on the draft via generating-html skill (Sonnet subagent). Runs immediately after code-pretty and BEFORE showing the plan to the user. Re-fires together with code-pretty after each revision iteration (per-draft-state).
9. 사용자 검토 (구현계획서) — show the RAW plan + verifying-spec report + code-pretty diff summary; get approval (loop until OK; on changes → revise → back to step 6 verifying-spec)
10. 변경이력 기록 — append first [구현계획서-수정] entry via change-history skill
11. 구현 단계 핸드오프 — count tasks first, then offer the choice using the Execution Handoff message below (executing-plans or subagent-driven). Upstream subagent-driven-development is NOT offered here; only invoke it if the user explicitly asks for the upstream original.

If you find yourself skipping ahead, stop and create the missing task.

Before invoking the next skill via Skill tool, mark ALL checklist TaskCreate items as completed (in_progress → completed). The Skill tool transition does NOT auto-complete prior tasks. (v1.1.15+, FR-2)

Inputs

• docs/features/<date>-<slug>/<slug>-requirements.md
• docs/features/<date>-<slug>/<slug>-tech-design.md

Output

docs/features/<date>-<slug>/<slug>-implementation-plan.md

Schema (<slug>-implementation-plan.md)

---
commit_policy: per-task
---

# 구현계획서: <feature-name>

## 1. 단계별 작업
   ### Task 1: <Component>
   **Files:** Create/Modify/Test
   - [ ] Step 1: <action>
   - [ ] Step 2: <action>
   ...
## 2. 위험 코드 지점
   - <file:line>: <category> | <mitigation>
## 3. 롤백 전략

---
## 변경이력

Frontmatter — commit_policy field

This field tells /executing-plans how to commit work between tasks. It is the single source of truth for commit policy; do NOT scatter "no commits" or "single commit" instructions in prose.

If the field is omitted, /executing-plans assumes per-task.

If the user explicitly requests single or none during planning, set the field accordingly and warn them once: "이 모드에서는 변경이력의 변경 전 코드를 in-memory로 보관해야 해서 토큰 비용이 큽니다. 가능하면 per-task를 권장합니다."

Bite-Sized Task Granularity (inherited from upstream)

Each step is one action (2-5 minutes):

• "Write the failing test" — step
• "Run it to make sure it fails" — step
• "Implement the minimal code to make the test pass" — step
• "Run the tests and make sure they pass" — step
• "Commit" — step (skip if git is not initialized)

Same-file mechanical 묶음 룰 (v2.0.1+)

둘 이상의 logical change 가 다음 세 조건 모두 만족하면 1 task 의 multi-step 으로 묶는다:

1. 같은 파일 — Files 목록 동일 (Modify 대상 path 동일)
2. 테스트 경계 없음 — 한 통합 test 또는 UI preview 로 같이 검증 가능
3. mechanical — 다음 패턴에 해당. 알고리즘 변경 X.
   • modifier / annotation 추가 (예: Modifier.padding(...))
   • handler 등록 (예: BackHandler { ... }, click listener)
   • container 옵션 (예: Scaffold(contentWindowInsets = ...))
   • placeholder text / static UI element 추가
   • import / using 추가

세 조건 중 하나라도 어기면 분리. 묶을 때 task 안 step 구조:

• step 1: 통합 test 작성 (한 번)
• step 2~N: 각 변경의 byte-copy Edit (**원본** / **수정 후** 페어)
• step N+1: test 실행 → pass 확인
• step N+2: self-review

(애매하면 분리 — false negative 회복 비용 < false positive)

multi-step task 의 byte-copy 정합성 (v2.0.0 D3 가정): 각 step 의 **원본** 블록은 직전 step 적용 후 파일 상태 기준이지만, mechanical 변경은 대부분 file 의 다른 위치 (independent insertions) 라 자연 byte-equal. 가정 깨지면 implementer Stage 1 BLOCKED → Stage 2 reorder dispatch 가 처리.

Plan Document Header (REQUIRED)

Every implementation plan MUST start with:

# <Feature Name> 구현계획서

> **다음 단계 안내**: 이 계획을 task-by-task 로 실행하려면 `subagent-driven-development` (보조 에이전트 강제 모드, 권장) 또는 `executing-plans` (인라인 모드) 를 사용하세요. 각 step 은 체크박스 (`- [ ]`) 형식이라 진행 상황 추적이 가능합니다.

**Goal:** <one sentence>

**Architecture:** <2-3 sentences from <slug>-tech-design.md §1>

**Tech Stack:** <key technologies>

**Spec inputs:**
- <slug>-requirements.md — <key FRs touched>
- <slug>-tech-design.md — <key decisions/architecture>

---

Task Structure (inherited)

### Task N: <Component Name>

**Files:**
- Create: `exact/path/to/file.py`
- Modify: `exact/path/to/existing.py:123-145`
- Test: `tests/exact/path/to/test.py`

**Model**: haiku

- [ ] **Step 1: Write the failing test**

```python
def test_specific_behavior():
    result = function(input)
    assert result == expected
```

- [ ] **Step 2: Run test to verify it fails**

Run: `pytest tests/path/test.py::test_name -v`
Expected: FAIL with "function not defined"

- [ ] **Step 3: Write minimal implementation**

```python
def function(input):
    return expected
```

- [ ] **Step 4: Run test to verify it passes**

Run: `pytest tests/path/test.py::test_name -v`
Expected: PASS

- [ ] **Step 5: Commit (skip if no git)**

```bash
git add tests/path/test.py src/path/file.py
git commit -m "feat: add specific feature"
```

Task Model Hint (v1.1.14+)

Each task block MAY include **Model**: haiku | sonnet | opus to tell subagent-driven which model to dispatch the implementer with. Spec-reviewer is always sonnet (NOT controlled by this field).

Evaluation rule:

Backward compat: If the field is omitted, subagent-driven defaults to sonnet. Existing plans (v1.1.13 and earlier) work as-is.

Anti-pattern: setting Model: haiku for a task that touches Korean prose in skill bodies. Haiku has a known rephrasing risk on Korean text — see skills/generating-html/SKILL.md:50 for the same constraint.

Code Block Convention (Before/After labels) — required for tasks that modify existing code

When a task changes existing code (Modify), use the Before/After label pair:

**원본** (`<file>:<line-range>`):
```<lang>
<original code, byte-equal to current source>
```

**수정 후**:
```<lang>
<new code>
```

Rules:

1. The "원본" label MUST start with exactly **원본** (markdown bold). The (file:line-range) annotation is REQUIRED for Modify tasks (v2.0.1+) so that plan_byte_check helper can verify the block byte-equal against the actual file at that range. Without a line range, the helper falls back to whole-file compare which fails for partial-file edits.
2. The "수정 후" label MUST start with exactly **수정 후** (markdown bold).
3. For tasks that CREATE a new file, the "원본" block is OMITTED — only "수정 후" block is shown (with (new file: <path>) annotation).
4. Both blocks MUST use the same fenced-code language identifier.
5. The code-pretty skill targets ONLY "수정 후" blocks. "원본" blocks are byte-immutable.

This convention is required so that:

• Reviewers can compare before/after at a glance.
• The code-pretty skill can identify which blocks to prettify (수정 후) and which to leave untouched (원본).

Anti-pattern: showing only the modified code without the original. Reviewers cannot tell what changed.

Process Flow

digraph plan_flow {
    "Read <slug>-requirements.md + <slug>-tech-design.md" [shape=box];
    "File structure outline" [shape=box];
    "Decompose into bite-sized tasks" [shape=box];
    "Self-review (spec coverage,\n placeholders, type consistency)" [shape=box];
    "User reviews <slug>-implementation-plan.md" [shape=diamond];
    "Invoke verifying-spec" [shape=box];
    "Verifier report → user decision" [shape=diamond];
    "Invoke code-pretty\n(pre-review, Sonnet subagent)" [shape=box];
    "Invoke generating-html\n(pre-review, Sonnet subagent)" [shape=box];
    "Invoke change-history" [shape=box];
    "Hand off to /executing-plans" [shape=doublecircle];

    "Read <slug>-requirements.md + <slug>-tech-design.md" -> "File structure outline";
    "File structure outline" -> "Decompose into bite-sized tasks";
    "Decompose into bite-sized tasks" -> "Self-review (internal)";
    "Self-review (internal)" -> "Run verifying-spec FIRST";
    "Run verifying-spec FIRST" -> "Invoke code-pretty\n(pre-review, Sonnet subagent)";
    "Invoke code-pretty\n(pre-review, Sonnet subagent)" -> "Invoke generating-html\n(pre-review, Sonnet subagent)";
    "Invoke generating-html\n(pre-review, Sonnet subagent)" -> "Single combined approval gate\n(plan + verify report + code-pretty diff)";
    "Single combined approval gate\n(plan + verify report + code-pretty diff)" -> "Self-review (internal)" [label="no — re-verify + re-prettify"];
    "Single combined approval gate\n(plan + verify report + code-pretty diff)" -> "Invoke change-history" [label="approve"];
    "Invoke change-history" -> "Hand off to /executing-plans";
}

File Structure

Before defining tasks, map out which files will be created or modified and what each one is responsible for. This is where decomposition decisions get locked in.

• Design units with clear boundaries and well-defined interfaces. Each file should have one clear responsibility.
• Smaller, focused files beat large files that do too much.
• Files that change together should live together. Split by responsibility, not by technical layer.
• In existing codebases, follow established patterns. Don't restructure unless an unwieldy file actively blocks the work.

§2 위험 코드 지점

After tasks are written, fill ## 2. 위험 코드 지점 with concrete entries:

## 2. 위험 코드 지점

- `src/wallet/service.py:42-58` — side-effect: 잔액이 -로 갈 수 있음 (mitigation: amount 검증 + 트랜잭션)
- `src/api/wallet_routes.py:withdraw` — breaking: 응답 스키마에 transaction_id 추가 (mitigation: 클라이언트 호환성 확인)

Categories MUST come from risk-annotation taxonomy: side-effect | breaking | race. Each entry pairs a location with a mitigation strategy.

§3 롤백 전략

## 3. 롤백 전략

- Code: revert commits SHA-A..SHA-B (or stash + reset)
- DB: migration <name> has down(), run `alembic downgrade -1`
- Config: feature flag `wallet.withdraw.v2` defaults off

No Placeholders (inherited)

Every step must contain the actual content an engineer needs. These are plan failures — never write them:

• "TBD", "TODO", "implement later", "fill in details"
• "Add appropriate error handling" / "add validation" / "handle edge cases"
• "Write tests for the above" (without actual test code)
• "Similar to Task N" (repeat the code — the engineer may be reading tasks out of order)
• Steps that describe what to do without showing how
• References to types, functions, or methods not defined in any task

Remember

• Exact file paths always — src/wallet/service.py:42-58, never "the wallet service"
• Complete code in every step — if a step changes code, show the code in a code block
• Exact commands with expected output — never "run the tests" without the command + expected outcome
• DRY, YAGNI, TDD, frequent commits — these aren't slogans, they're rules

Self-Review

After writing the complete plan, look at it with fresh eyes:

1. Spec coverage: Skim each FR and key decision in <slug>-requirements.md and <slug>-tech-design.md. Can you point to a task that implements it? List any gaps.
2. Placeholder scan: Search for any of the patterns from "No Placeholders" above. Fix them.
3. Type consistency: Function names, signatures, and property names must match across tasks (e.g., clearLayers() in Task 3 vs clearFullLayers() in Task 7 is a bug).
4. 위험 코드 지점 coverage: Every category in <slug>-tech-design.md §6 has at least one corresponding entry in §2.
5. same-file 묶음 룰 위반 검사: task 들 중 같은 파일만 만지는 chain 이 2건 이상 있는지 확인. 있으면 D1 의 3 조건 (같은 파일 / test 경계 X / mechanical) 재검토 → 묶을지 결정. (v2.0.1+)

If you find issues, fix them inline. If you find a spec requirement with no task, add the task.

plan_byte_check helper (v2.0.0+)

After all tasks are written and self-review checks pass, run the byte-equal verifier:

source .venv/bin/activate && python -c "
import sys
from pathlib import Path
from scripts.plan_byte_check import verify_plan_block_byte_equal
mismatches = verify_plan_block_byte_equal(
    Path('docs/features/<date>-<slug>/<slug>-implementation-plan.md'),
    Path('.'),
)
if mismatches:
    for m in mismatches:
        print(f'MISMATCH #{m.block_index} — {m.reason}')
        print(f'  file: {m.file_path}')
    sys.exit(1)
print('plan_byte_check ✅ all blocks byte-equal')
sys.exit(0)
" 2>&1

If exit 1 (mismatches found):

• Mismatch list shown to user.
• Plan is NOT saved. Fix the **원본** blocks (they must be byte-identical to current file content) and re-run the helper.
• This enforces v2.0.0 byte-copy implementer's precondition: it will fail-fast on mismatch with no LLM fuzzy match fallback.

Anti-Patterns

Red Flags

After Save — single approval gate, then execution-mode choice

This summarizes the corrected order (matches Checklist + Process Flow above):

1. Run verifying-spec FIRST (before any user prompt):
   • Target: <slug>-implementation-plan.md
   • Upstream: [<slug>-requirements.md, <slug>-tech-design.md]
   • Procedure: consistency (FR + key decisions covered as tasks) + code impact (files/functions referenced exist or are explicitly created)
   • Tolerance: if verifying-spec skill is not installed, skip and emit the notice ("ℹ️ verify-gate 가 설치되지 않았습니다. Phase 2 이후 활성화되며, 지금은 검증 없이 진행합니다.")
2. Run code-pretty (after verifying-spec passes, before generating-html):
   • Target: <slug>-implementation-plan.md (only **수정 후**-labeled blocks)
   • Output: diff summary text (preserved for the approval gate)
   • Tolerance: if code-pretty skill is not installed, skip and emit "ℹ️ code-pretty 가 설치되지 않았습니다. 코드 블록은 그대로 표시됩니다."
3. Run generating-html (immediately after code-pretty):
   • Standard format-only pass (Sonnet subagent)
4. Single combined approval gate — present in ONE message:
   • The full RAW <slug>-implementation-plan.md (or summary if very long, with link)
   • The verify-spec 4-axis report
   • The code-pretty diff summary

   • Gate #13 — plan + verify 결합 승인

     Tool form (preferred)

     Call AskUserQuestion:

     {
       "question": "<slug>-implementation-plan.md (+ verify-spec 보고서) 승인하고 진행?",
       "context": "plan + 4축 보고서 한 메시지로 노출됨",
       "choices": [
         {"value": "yes", "label": "예 — 승인하고 change-history + 실행 모드 선택"},
         {"value": "no", "label": "아니오 — 사용자 피드백 받아 수정 후 재제시"}
       ]
     }

     Prose fallback

     Approve <slug>-implementation-plan.md and proceed? — yes / no

   • DO NOT split into "approve plan" → "approve verify report". One gate, one decision.
   • On no → 피드백 받아 수정 후 재제시. anchor 질문 강제 X.
5. On yes → invoke change-history ([구현계획서-수정] entry) → continue to Execution Handoff below. On no → 피드백 받아 수정 후 재제시. anchor 질문 강제 X.

Execution Handoff

After verification passes and the entry is logged, count plan tasks and offer execution choice:

Gate #14 — 실행 모드 선택

Tool form (preferred)

Call AskUserQuestion:

{
  "question": "Plan에 <N>개 task. 어느 실행 방식?",
  "context": "Inline = ≤12 tasks recommended; Subagent = 13+ tasks recommended",
  "choices": [
    {"value": "Inline", "label": "인라인 — 메인 에이전트가 executing-plans 로 직접 실행 (≤12 task 권장)"},
    {"value": "Subagent", "label": "서브에이전트 — implementer + spec reviewer 디스패치 (13+ task 권장)"}
  ]
}

Prose fallback

"Plan complete and saved to docs/features/<date>-<slug>/<slug>-implementation-plan.md. Two execution options:

1. Inline (recommended for medium plans, ≤ 12 tasks) — main agent edits directly via executing-plans; fast, fewer total tokens; main context accumulates with task count
2. Subagent (recommended for large plans, 13+ tasks) — implementer + spec reviewer subagents via subagent-driven; preserves main context; adds dispatch cost

Plan has <N> tasks. Which approach?"

If Inline chosen → REQUIRED SUB-SKILL: executing-plans If Subagent chosen → REQUIRED SUB-SKILL: subagent-driven

The upstream subagent-driven-development is NOT offered in this handoff. Invoke it only when the user explicitly requests the upstream original.

Related Skills

• brainstorming — upstream input (<slug>-requirements.md)
• tech-design — upstream input (<slug>-tech-design.md)
• verifying-spec — verification gate (active from Phase 2)
• change-history — entry recording on save
• executing-plans / subagent-driven-development — downstream execution
• risk-annotation — taxonomy used in §2 위험 코드 지점

승인 게이트 / multi-choice 결정 = AskUserQuestion 도구 (v2.3.6+)

산출물 (PRD / tech-design / impl-plan) 작성 완료 후 사용자에게 승인 / 수정 / 다른 방향 류 multi-choice 결정을 요청할 때 → 반드시 AskUserQuestion 도구로 호출. prose 자연어 멀티 옵션 금지.

Why

• Notification.elicitation_dialog 매처 fire → OS 알람 (사용자 백그라운드 작업 시 catch)
• prose multi-choice 는 알람 X → 응답 멈춤
• "Other" / 자유 응답 / multiSelect / preview 등 도구 기능 활용

적용 케이스

• 산출물 ("이대로 진행 / 수정 필요 / 다른 방향") 게이트
• alternatives 2-3 안 사용자 선택
• partial 수정 후 재승인

기존 v2.0.3+ Socratic clarifying Q boilerplate + v2.1.1+ Other / 모호 응답 처리 룰 보존 (변경 X). 본 룰은 그 위에 multi-choice 결정 게이트 시점 명시 보강. CLAUDE.md "AskUserQuestion 도구 우선 (v2.3.5+)" 글로벌 룰의 PRD 흐름 측 boilerplate.

Anti-Patterns