feat(skills): add CCW orchestrator and refactor command-guide to ccw-help

CCW Skill (new):
- Stateless workflow orchestrator with intent classification
- 6 workflow combinations: rapid, full, coupled, bugfix, issue, ui
- External configuration: intent-rules.json, workflow-chains.json
- Implicit CLI tool injection (Gemini/Qwen/Codex)
- TODO tracking integration for workflow progress

CCW-Help Skill (refactored from command-guide):
- Renamed command-guide → ccw-help
- Removed reference folder duplication
- Source paths now relative from index/ (../../../commands/...)
- Added all-agents.json index
- Simplified SKILL.md following CCW pattern

.claude/skills/ccw/phases/actions/docs.md

@@ -0,0 +1,93 @@
+# Documentation Workflow Action
+
+## Pattern
+```
+memory:docs → execute  (full)
+memory:update-related  (incremental)
+```
+
+## Trigger Conditions
+
+- 关键词: "文档", "documentation", "docs", "readme", "注释"
+- 变体触发:
+  - `incremental`: "更新", "增量", "相关"
+  - `full`: "全部", "完整", "所有"
+
+## Variants
+
+### Full Documentation
+```mermaid
+graph TD
+    A[User Input] --> B[memory:docs]
+    B --> C[项目结构分析]
+    C --> D[模块分组 ≤10/task]
+    D --> E[execute: 并行生成]
+    E --> F[README.md]
+    E --> G[ARCHITECTURE.md]
+    E --> H[API Docs]
+    E --> I[Module CLAUDE.md]
+```
+
+### Incremental Update
+```mermaid
+graph TD
+    A[Git Changes] --> B[memory:update-related]
+    B --> C[变更模块检测]
+    C --> D[相关文档定位]
+    D --> E[增量更新]
+```
+
+## Configuration
+
+| 参数 | 默认值 | 说明 |
+|------|--------|------|
+| batch_size | 4 | 每agent处理模块数 |
+| format | markdown | 输出格式 |
+| include_api | true | 生成API文档 |
+| include_diagrams | true | 生成Mermaid图 |
+
+## CLI Integration
+
+| 阶段 | CLI Hint | 用途 |
+|------|----------|------|
+| memory:docs | `gemini --mode analysis` | 项目结构分析 |
+| execute | `gemini --mode write` | 文档生成 |
+| update-related | `gemini --mode write` | 增量更新 |
+
+## Slash Commands
+
+```bash
+/memory:docs              # 规划全量文档生成
+/memory:docs-full-cli     # CLI执行全量文档
+/memory:docs-related-cli  # CLI执行增量文档
+/memory:update-related    # 更新变更相关文档
+/memory:update-full       # 更新所有CLAUDE.md
+```
+
+## Output Structure
+
+```
+project/
+├── README.md              # 项目概览
+├── ARCHITECTURE.md        # 架构文档
+├── docs/
+│   └── api/               # API文档
+└── src/
+    └── module/
+        └── CLAUDE.md      # 模块文档
+```
+
+## When to Use
+
+- 新项目初始化文档
+- 大版本发布前文档更新
+- 代码变更后同步文档
+- API文档生成
+
+## Risk Assessment
+
+| 风险 | 缓解措施 |
+|------|----------|
+| 文档与代码不同步 | git hook集成 |
+| 生成内容过于冗长 | batch_size控制 |
+| 遗漏重要模块 | 全量扫描验证 |