docs(asl): Upgrade Tool 3 architecture from Fan-out to Scatter+Aggregator (v2.0)

Architecture transformation:
- Replace Fan-out (Manager->Child->Last Child Wins) with Scatter+Aggregator pattern
- API layer directly dispatches N independent jobs (no Manager)
- Worker only writes its own Result row, never touches Task table (zero row-lock)
- Aggregator polls groupBy for completion + zombie cleanup (replaces Sweeper)
- Reduce red lines from 13 to 9, eliminate distributed complexity

Documents updated (10 files):
- 08-Tool3 main architecture doc: v2.0 rewrite (schema, Task 2.3/2.4, red lines, risks)
- 08d-Code patterns: rewrite sections 4.1-4.6 (API dispatch, SingleWorker, Aggregator)
- 08a-M1 sprint: rewrite M1-3 core (Worker+Aggregator), red lines, acceptance criteria
- 08b-M2 sprint: simplify SSE (NOTIFY/LISTEN downgraded to P2 optional)
- 08c-M3 sprint: milestone table wording update
- New: Scatter+Polling Aggregator pattern guide v1.1 (Level 2 cookbook)
- New: V2.0 architecture deep review and gap-fix report
- Updated: ASL module status, system status, capability layer index

Co-authored-by: Cursor <cursoragent@cursor.com>

docs/03-业务模块/ASL-AI智能文献/04-开发计划/08c-工具3-M3-动态模板引擎冲刺清单.md

@@ -165,7 +165,7 @@ IMPORTANT: The rules above are ONLY for locating and extracting specific data fi
 
 | 里程碑 | 时间 | 核心交付 | 可独立演示 |
 |--------|------|---------|-----------|
-| **M1** | Week 1（5-6 天） | Fan-out 骨架管线 + PKB ACL + 纯文本盲提 | ✅ 后台跑通，DB 有数据 |
+| **M1** | Week 1（5-6 天） | 散装派发 + Aggregator + PKB ACL + 纯文本盲提 | ✅ 后台跑通，DB 有数据 |
 | **M2** | Week 2-3（8-9 天） | MinerU + 审核抽屉 + SSE + Excel | ✅ 完整 V1 体验 |
 | **M3** | Week 4（5-6 天） | 动态模板 + 安全 + E2E | ✅ V2.0 完整交付 |
 | **合计** | **4 周（~22 天）** | | 每周五可 Demo |