diff --git a/.doc/ops/CURRENT.md b/.doc/ops/CURRENT.md
index 5486ab78..d0a20958 100644
--- a/.doc/ops/CURRENT.md
+++ b/.doc/ops/CURRENT.md
@@ -5,7 +5,7 @@
 
 ## 焦点
 
-1. **MULTI-INTENT HITL**：U1 契约已冻结（[U1 报告](../test-reports/2026-09-15-multi-intent-u1-contracts-test-report.md)；[U1 任务](./short-term/2026-09-15-multi-intent-u1-contracts.md)）；U2 规则分段未开工
+1. **MULTI-INTENT HITL**：U2 规则分段进行中（[U2](./short-term/2026-09-15-multi-intent-u2-segmenter.md)；[U1 报告](../test-reports/2026-09-15-multi-intent-u1-contracts-test-report.md)）
 2. **发布门禁**：CI `TEST_DATABASE_URL`、真实 PI 三工作流 E2E、前端人工抽检仍开放（[gap-matrix](../remediation/gap-matrix.md)）
 3. **CHAT-INTENT**：双标签 busy 已签（项目 **6275**）；不删 `sess-p143-u9`；项目 143 只读
 
@@ -13,6 +13,7 @@
 
 | owner | task | branch | worktree | mutex | status |
 |-------|------|--------|----------|-------|--------|
+| Cursor | 2026-09-15-multi-intent-u2-segmenter | feature/multi-intent-u2-segmenter | - | intent | in_progress |
 | Cursor | 2026-09-15-multi-intent-u1-contracts | feature/multi-intent-u1-contracts | - | architecture-docs | done |
 | Cursor | app-composition-u11-u12 | feature/app-composition-u11-u12 | - | app | done |
 | Cursor | chatlog-contextasm-u10 | feature/chatlog-contextasm-u10 | - | chat | done |
diff --git a/.doc/ops/checklists/2026-09-15-multi-intent-u2-segmenter.md b/.doc/ops/checklists/2026-09-15-multi-intent-u2-segmenter.md
new file mode 100644
index 00000000..c2ae5e0f
--- /dev/null
+++ b/.doc/ops/checklists/2026-09-15-multi-intent-u2-segmenter.md
@@ -0,0 +1,22 @@
+---
+title: "多意图 HITL U2 规则分段 checklist"
+status: in_progress
+created: 2026-09-15
+updated: 2026-09-15
+related_task: "2026-09-15-multi-intent-u2-segmenter"
+---
+
+# 多意图 HITL U2 规则分段 checklist
+
+## Wave 1
+
+- [ ] characterization 锁定 legacy IntentPlan
+- [ ] 分段器 golden（连接词/句号/序号/先再最后）
+- [ ] 查询并总结不拆；写段进入提案；5 段拒绝；红线整体拒绝；指代澄清
+- [ ] digest 稳定；shadow 不改 TopIntent
+- [ ] 反事实 auto_read 错误自动执行 = 0
+- [ ] `go test -short ./internal/intent ./internal/coordinator ./internal/app/intentflow`
+
+## 完成定义
+
+- [ ] 全部勾选且有证据链接
diff --git a/.doc/ops/short-term/2026-09-15-multi-intent-hitl.md b/.doc/ops/short-term/2026-09-15-multi-intent-hitl.md
index fca7da0d..4605d88a 100644
--- a/.doc/ops/short-term/2026-09-15-multi-intent-hitl.md
+++ b/.doc/ops/short-term/2026-09-15-multi-intent-hitl.md
@@ -3,10 +3,10 @@ title: "多意图持久计划与 HITL（核心 U1–U8，扩面 U9–U12）"
 status: in_progress
 created: 2026-09-15
 updated: 2026-09-15
-owner: "-（U1 已完成；U2 待认领）"
-branch: "-"
+owner: Cursor（U2）；其余单元待认领
+branch: feature/multi-intent-u2-segmenter
 worktree: "-"
-mutex: "-"
+mutex: intent
 ---
 
 # 多意图持久计划与 HITL（核心 U1–U8，扩面 U9–U12）
diff --git a/.doc/ops/short-term/2026-09-15-multi-intent-u2-segmenter.md b/.doc/ops/short-term/2026-09-15-multi-intent-u2-segmenter.md
new file mode 100644
index 00000000..e86d5dea
--- /dev/null
+++ b/.doc/ops/short-term/2026-09-15-multi-intent-u2-segmenter.md
@@ -0,0 +1,56 @@
+---
+title: "多意图 HITL U2：规则分段与 shadow 提案"
+status: in_progress
+created: 2026-09-15
+updated: 2026-09-15
+owner: Cursor
+branch: feature/multi-intent-u2-segmenter
+worktree: "-"
+mutex: intent
+---
+
+# 多意图 HITL U2：规则分段与 shadow 提案
+
+## 目标
+
+在不改变生产路由（TopIntent / 现有 IntentPlan）的前提下，用纯规则分段器生成 2–4 步 `PlanProposal` 与 shadow 指标；写段不再在提案层被静默丢弃。
+
+## 范围
+
+- `internal/intent/segmenter.go`：连接词/句号/分号/换行/序号/先再最后，上限 4
+- `PlanProposal` L1 值对象：span、证据、缺槽、依赖建议、稳定 digest
+- Recognize 附加提案与 shadow；**不**改 coordinator 执行路径
+- golden / hard-negative / 反事实（若处于 auto_read 会如何）
+
+## 非目标
+
+- 不建 PG、不接 HTTP、不改 Web
+- 不把 HITL/tier 回灌 ActionRegistry
+- 不启用 LLM 分段（U9）
+- 不把 shadow 提案当作生产 IntentPlan
+
+## 步骤
+
+1. [ ] 认领 CURRENT，characterization 锁定现有 IntentPlan
+2. [ ] 分段器 + PlanProposal + digest
+3. [ ] 接入 Recognize（leaf 识别防递归）
+4. [ ] golden/hard-negative/反事实与报告
+
+## 验收标准
+
+- [ ] 「查风险，然后查法规」现有 IntentPlan 仍为 2 步 query
+- [ ] 「查法规然后生成报价单」生产 IntentPlan 仍为 nil（路由不变），提案含写段且 ComboHint=needs_confirm
+- [ ] 「查询并总结」不拆
+- [ ] 指代失败 → needs_clarify
+- [ ] 红线混入 → rejected
+- [ ] 5 段 → rejected_batch_size
+- [ ] 同输入 digest 稳定
+- [ ] 反事实错误自动执行 = 0
+- [ ] `intent -> maturity` 保持
+
+## 相关链接
+
+- 总览: [2026-09-15-multi-intent-hitl.md](./2026-09-15-multi-intent-hitl.md)
+- 设计: [../../system-design/2026-09-15-multi-intent-hitl-plan.md](../../system-design/2026-09-15-multi-intent-hitl-plan.md)
+- Checklist: [../checklists/2026-09-15-multi-intent-u2-segmenter.md](../checklists/2026-09-15-multi-intent-u2-segmenter.md)
+- Test report: [../../test-reports/2026-09-15-multi-intent-u2-segmenter-test-report.md](../../test-reports/2026-09-15-multi-intent-u2-segmenter-test-report.md)