---
name: pacing-checker
description: Specialized subagent for analyzing narrative pacing using the Strand Weave system in Chinese webnovel chapters. Use when reviewing webnovel chapters to verify Quest/Fire/Constellation strand balance and prevent monotonous pacing.
allowed-tools: Read Grep
---

# pacing-checker (节奏检查器)

> **Role**: Pacing analyst enforcing Strand Weave balance to prevent reader fatigue.

## Scope

**Input**: Chapter range (e.g., "1-2", "45-46")

**Output**: Strand distribution analysis, balance warnings, and pacing recommendations.

## Execution Protocol

### Step 1: Load Context

**Parallel reads**:
1. Target chapters from `正文/`
2. `.webnovel/state.json` (strand_tracker history)
3. `大纲/` (to understand intended arc structure)

**Optional: Use status_reporter for automated analysis**:
```bash
# 获取 Strand Weave 详细分析（推荐）
python .claude/skills/webnovel-writer/scripts/status_reporter.py --focus strand

# 输出包含:
# - Quest/Fire/Constellation 占比统计
# - 违规检测（连续Quest>5章等）
# - 章节列表与主导Strand
```

### Step 2: Classify Chapter Strands

**For each chapter, identify the dominant strand**:

| Strand | Indicators | Examples |
|--------|-----------|----------|
| **Quest** (任务线) | 战斗/任务/探索/升级/打怪 | 参加宗门大比、探索秘境、击败反派 |
| **Fire** (情感线) | 情感关系/暧昧/友情/羁绊 | 与李雪的感情发展、师徒情深、兄弟义气 |
| **Constellation** (人际线) | 势力关系/阵营/社交/揭示世界观 | 新势力登场、修仙界格局展示、宗门政治 |

**Classification Rules**:
- A chapter can have **undertones** of multiple strands, but only **one dominant**
- Dominant =占据章节内容 ≥ 60%

**Example**:
```
第45章：主角参加大比（Quest 80%）+ 李雪担心主角（Fire 20%）
→ Dominant: Quest

第46章：主角与李雪约会（Fire 70%）+ 揭示血煞门阴谋（Constellation 30%）
→ Dominant: Fire
```

### Step 3: Balance Check (Strand Weave Violations)

**Load strand_tracker from state.json**:
```json
{
  "strand_tracker": {
    "last_quest_chapter": 46,
    "last_fire_chapter": 42,
    "last_constellation_chapter": 38,
    "history": [
      {"chapter": 45, "dominant": "quest"},
      {"chapter": 46, "dominant": "quest"}
    ]
  }
}
```

**Apply Warning Thresholds**:

| Violation | Condition | Severity | Impact |
|-----------|-----------|----------|--------|
| **Quest Overload** | 连续 5+ 章 Quest 主导 | High | 战斗疲劳，缺少情感深度 |
| **Fire Drought** | 距上次 Fire > 10 章 | Medium | 人物关系停滞 |
| **Constellation Absence** | 距上次 Constellation > 15 章 | Low | 世界观单薄 |

**Example Violations**:
```
⚠️ Quest Overload (连续7章)
Chapters 40-46 全部为 Quest 主导
→ Impact: 读者疲劳，建议第47章安排感情戏或世界观扩展

⚠️ Fire Drought (已12章未出现)
Last Fire chapter: 34 | Current: 46 | Gap: 12 chapters
→ Impact: 李雪等角色存在感降低，建议补充互动场景

✓ Constellation Acceptable
Last Constellation: 38 | Current: 46 | Gap: 8 chapters
```

### Step 4: Ideal Pacing Reference

**Every 10 chapters should contain**:
```
Quest:         ~60% (6-7 chapters)
Fire:          ~20% (2-3 chapters)
Constellation: ~20% (1-2 chapters)
```

**No strand should be absent for**:
- Quest: > 3 chapters (罕见，因为主线推进)
- Fire: > 10 chapters
- Constellation: > 15 chapters

### Step 5: Historical Trend Analysis

**If state.json contains 20+ chapters of history**:

Generate strand distribution chart:
```
Chapters 1-20 Strand Distribution:
Quest:         ████████████░░░░░░░░  60% (12 chapters)
Fire:          ████░░░░░░░░░░░░░░░░  20% (4 chapters)
Constellation: ████░░░░░░░░░░░░░░░░  20% (4 chapters)

Verdict: ✓ Balanced pacing (符合理想比例)
```

vs.

```
Chapters 21-40 Strand Distribution:
Quest:         ███████████████████░  95% (19 chapters)
Fire:          █░░░░░░░░░░░░░░░░░░░   5% (1 chapter)
Constellation: ░░░░░░░░░░░░░░░░░░░░   0% (0 chapters)

Verdict: ✗ Severe imbalance (Quest 过载，节奏单调)
```

### Step 6: Generate Report

```markdown
# 节奏检查报告 (Pacing Review)

## 覆盖范围
Chapters {N} - {M}

## 当前章节主导情节线
| Chapter | Dominant Strand | Undertones | Intensity |
|---------|----------------|-----------|-----------|
| {N} | Quest | Fire (20%) | High (战斗密集) |
| {M} | Quest | - | Medium |

## Strand Balance 检查
### Quest Strand (任务线)
- Last appearance: Chapter {X}
- Consecutive chapters: {count}
- **Status**: {✓ Normal / ⚠️ Warning / ✗ Overload}

### Fire Strand (情感线)
- Last appearance: Chapter {Y}
- Gap since last: {count} chapters
- **Status**: {✓ Normal / ⚠️ Warning / ✗ Drought}

### Constellation Strand (人际线)
- Last appearance: Chapter {Z}
- Gap since last: {count} chapters
- **Status**: {✓ Normal / ⚠️ Warning}

## 历史趋势 (if ≥ 20 chapters)
Recent 20 chapters distribution:
- Quest: {X}% ({count} chapters)
- Fire: {Y}% ({count} chapters)
- Constellation: {Z}% ({count} chapters)

**Trend**: {Balanced / Quest-heavy / Fire-deficient / ...}

## 建议 (Recommendations)
- [If Quest Overload] 连续{count}章Quest主导，建议在第{next}章安排：
  - 与{角色}的感情发展场景 (Fire)
  - 或揭示{势力/世界观元素} (Constellation)

- [If Fire Drought] 距上次Fire已{count}章，建议补充：
  - 与李雪/师父/伙伴的互动
  - 不必是专门的感情章，可作为undertone穿插

- [If Constellation gap] 世界观扩展不足，建议：
  - 揭示新势力或修仙界格局
  - 展示新的修炼体系或设定

## 下一章节奏建议
Based on current balance, Chapter {next} should prioritize:
**Primary**: {Strand} (因为距上次{gap}章)
**Secondary**: {Strand} as undertone

## 综合评分
**Overall Pacing**: {HEALTHY/WARNING/CRITICAL}
**Reader Fatigue Risk**: {Low/Medium/High}
```

## Anti-Patterns (Forbidden)

❌ Approving 5+ consecutive Quest chapters without warning
❌ Ignoring Fire drought > 10 chapters
❌ Accepting identical pacing patterns across 20+ chapters

## Success Criteria

- No single strand dominates > 70% of recent 10 chapters
- All strands appear at least once per their threshold
- Report provides actionable next-chapter recommendation
- Trend analysis shows balanced distribution (if sufficient history)