docs(02): create phase 2 plans for platform skills

.planning/ROADMAP.md

@@ -34,7 +34,7 @@ Decimal phases appear between their surrounding integers in numeric order.
 Plans:
 - [ ] 01-01-PLAN.md — State Manager: workflow_state.json 管理 (PIPE-02, REL-01, REL-03)
 - [ ] 01-02-PLAN.md — Schema Registry: 统一输入输出格式定义 (PIPE-01, PIPE-03, VAL-01, REL-03)
-- [ ] 01-03-PLAN.md — Error Handler & Config: 结构化错误处理和统一配置 (REL-02, MNT-02, MNT-03)
+- [x] 01-03-PLAN.md — Error Handler & Config: 结构化错误处理和统一配置 (REL-02, MNT-02, MNT-03)
 
 ### Phase 2: Platform Skills
 **Goal**: 集成B站和知乎平台的内容获取能力，形成从链接到原始内容的完整流程
@@ -46,12 +46,12 @@ Plans:
   3. 输入知乎问答/专栏链接，自动提取内容和元数据
   4. 重复执行同一链接，不产生重复文件（幂等）
   5. 403/超时错误触发降级策略，记录失败原因到状态文件
-**Plans**: TBD
+**Plans:** 3 plans
 
 Plans:
-- [ ] 02-01: Link Parser & B站 Metadata 集成
-- [ ] 02-02: B站 Content (视频/专栏) 集成
-- [ ] 02-03: 知乎 Metadata & Content 集成
+- [ ] 02-01-PLAN.md — Link Parser & Idempotency Checker (PLAT-01, PLAT-02, PLAT-03)
+- [ ] 02-02-PLAN.md — Bilibili Adapter: 视频元数据 + 专栏内容 (PLAT-01, PLAT-02)
+- [ ] 02-03-PLAN.md — Zhihu Adapter: 问答 + 专栏内容 (PLAT-03)
 
 ### Phase 3: Processing Skills
 **Goal**: 集成ASR和OCR处理能力，支持视频和图片的多模态内容提取
@@ -93,12 +93,12 @@ Phases execute in numeric order: 1 → 2 → 3 → 4
 
 | Phase | Plans Complete | Status | Completed |
 |-------|----------------|--------|-----------|
-| 1. Foundation | 2/3 | In Progress | 01-02, 01-01 |
-| 2. Platform Skills | 0/3 | Not started | - |
+| 1. Foundation | 3/3 | Complete | 01-02, 01-01, 01-03 |
+| 2. Platform Skills | 0/3 | Ready | - |
 | 3. Processing Skills | 0/2 | Not started | - |
 | 4. Analysis & Orchestration | 0/3 | Not started | - |
 
 ---
 *Roadmap created: 2026-03-13*
-*Last updated: 2026-03-13 - Phase 1 in progress (2/3 plans complete)*
+*Last updated: 2026-03-13 - Phase 2 planned (3 plans ready)*
 *Granularity: coarse (4 phases)*