feat: M2 — 写→审(一致性)→裁决→验收(事务)；未决冲突禁验收

- 续审 Agent 声明(AgentSpec) + 结构化输出契约(ContinuityReview/Conflict 五类) - LangGraph 并行审子图(可扩四审) + collect 落 chapter_reviews 留痕 + review SSE(section/conflict) - 验收-side Repository：章节 accepted 版本晋升 + digest append-only + 审稿留痕/裁决 - API：review(SSE) + reviews 历史 + accept(单原子事务：晋升 version + 终稿 digest + 裁决留痕) - 冲突 gate：未决裁决拦截(CONFLICT_UNRESOLVED)；digest 从终稿提炼(不变量#4) - 前端：审稿报告页 + 冲突就地标注 + 裁决(采纳/忽略/手改) + 未决禁验收 + 「本次将更新」清单 - M2 E2E：真实 DB + 多档位 mock 网关零 token 走通写→审→裁决→验收→摘要入库 - 多 agent 协同台账(PROGRESS.md) + 共享记忆(memory/contracts·decisions·gotchas)
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+# PROGRESS — 多 Agent 协同任务台账
+
+> 多 agent 共享的**唯一协同入口**。开工前读这里 + `memory/`；认领任务、尊重依赖、完成即更新。
+> 完整任务定义见 `DEV_PLAN.md`；本台账只展开**当前阶段**，进入新阶段时再把该阶段任务拉进来。
+> 协同规则见 `CLAUDE.md` →「多 Agent 协同」。
+
+**状态图例**：⬜ 待办 · 🔵 进行中(注明 @skill + 日期) · ✅ 完成 · ⛔ 阻塞(注明等什么)
+
+---
+
+## 当前阶段：Phase 2 (M2) · 一致性 + 验收
+
+> 目标：写 → 审(一致性) → 裁决 → 验收(事务写回)；**未决冲突禁验收**。**契约先行**：C6 续审 AgentSpec + 结构化输出 schema → C4 扩(并行审图/SSE) → C3 扩(review/accept/reviews)。
+> 执行波次（依赖驱动）：A(T2.1‖T2.3) → B(T2.2) → C(T2.4+T2.5) → D(T2.6) → E(T2.7)。
+> 计划已定的设计决策（见变更日志 + `memory/decisions.md` 待 Wave A 落地后回写）：
+> **R2** digest 提炼在事务外做、原子事务只写库（不在持开事务里跨网络调 LLM）；
+> **R3** accept 为确定性事务代码、读领域表(`chapters`/`chapter_reviews`)重建真相，checkpoint 仅控制流句柄（不变量 #5）；
+> **R4** accept 取该章 `max(version)+1` 晋升 `status='accepted'`，草稿行保留；
+> **R5** 裁决清单每个 conflict 必须 采纳/忽略/手改 之一，缺判决 → `CONFLICT_UNRESOLVED`。
+
+| 任务 | 状态 | 负责 | 依赖 | 契约 | 备注 |
+|---|---|---|---|---|---|
+| T2.1 续审 AgentSpec + 结构化输出契约 + 网关 instructor 接线 | ✅ @llm 2026-06-18 | @llm | T1.1✅ | C6✅稳定 | `packages/agents/`+`packages/llm_gateway/`；`ContinuityReview/Conflict`(五类枚举)+`continuity_spec`(只读)；`Gateway.run` 经 instructor 填 `parsed`(改 C1)；25 tests 绿 |
+| T2.2 LangGraph 并行审 + collect 留痕 + review SSE | ✅ @llm 2026-06-18 | @llm | T1.3✅, T2.1✅ | C4✅扩稳定 | `orchestrator/`：`build_review_graph`(continuity 并行,可扩四审)+`collect_reviews`落 `chapter_reviews`+`normalize_review`(section/conflict)；accept 接线留 T2.4；15 新测；只 flush 不 commit |
+| T2.3 摘要/审稿留痕 Repository + 章节 version | ✅ @backend 2026-06-18 | @backend | T0.2✅ | — | `core/ww_core/domain/`：`chapter_repo`(promote_to_accepted/max_version/latest_accepted)+`digest_repo`(append-only)+`review_repo`(record/list/set_decisions)；纯 fake 17 新测；只 flush 不 commit（交 T2.4 事务）；唯一约束 DB 级→T2.7 E2E 覆盖 |
+| T2.4 验收事务 + 冲突 gate | ✅ @backend 2026-06-18 | @backend | T2.2✅, T2.3✅ | C3✅扩 | `accept_service`(冲突 gate+R3/R4 单事务)+`digest_extraction`(R2 事务外提炼,light)；`POST .../accept`；缺判→409 `CONFLICT_UNRESOLVED`+missing_indices |
+| T2.5 review API + 历史 | ✅ @backend 2026-06-18 | @backend | T2.2✅ | C3✅扩 | `POST .../review`(SSE section/conflict/done)+`GET .../reviews`(新→旧)；analyst 网关；流耗尽 commit；+9 测全仓 112 passed |
+| T2.6 审稿报告页 + 冲突裁决 + 验收 gate | ✅ @frontend 2026-06-18 | @frontend | T2.4✅, T2.5✅ | — | `app/projects/[id]/review`+`components/review/*`+`lib/review/*`；gen:api 纳三端点；就地标注(R6 段级锚点)+裁决+「将更新」清单+未决禁验收；vitest 45(+21) |
+| T2.7 M2 E2E | ✅ @qa 2026-06-18 | @qa | T2.6✅ | — | `tests/test_m2_e2e.py` 2 用例真跑过(非 skip)；闭环 + 零冲突直通；DB 真源断言(accepted v2 / digest 来自终稿#4 / 裁决留痕 / 三档位 ledger)；无新 bug |
+
+**M2 出口（DoD）✅ 全部达成**：写→审(一致性)→裁决→验收(事务)；未决冲突禁验收。后端门禁绿（ruff / mypy **90 文件** / pytest **114 passed** / alembic **无漂移**）；前端门禁绿（gen:api / lint / tsc / vitest **45** / build）；E2E 真实 DB + mock 网关零 token 走通 写→审→裁决→验收→摘要入库，DB 真源逐项断言。**M2 完成。** 下一阶段 M3（伏笔 + 节奏）见 DEV_PLAN，进入时拉入本表。
+
+---
+
+## 已归档阶段
+
+<details><summary>Phase 1 · 写章闭环骨架 (M1) — ✅ 全部完成（2026-06-18）</summary>
+
+T1.1 LLM 网关接口+DeepSeek 适配器+usage_ledger 记账（C1✅稳定）@llm · T1.2 记忆 assemble 确定性选择（C5✅稳定）@backend · T1.3 LangGraph 写章节点+Postgres checkpointer+SSE（C4✅稳定）@llm · T1.4 立项+写章 draft(SSE)+PUT 自动保存（C3✅稳定）@backend · T1.5 AppShell+作品库+5 步立项向导 @frontend · T1.6 写作工作台（三栏+流式打字机+注入透明面板+自动保存）@frontend · T1.7 提供商凭据管理（Fernet 加密+测试连接）@backend · T1.8 设置页（档位路由+凭据行）@frontend · T1.9 M1 E2E（真实 DB+mock 网关零 token；暴露并修复 ledger 提交 bug）@qa。
+出口达成：后端门禁绿（ruff / mypy 68 / pytest 57 / alembic 无漂移）；前端门禁绿（gen:api / lint / tsc / vitest 24 / build）；E2E 闭环走通。
+M2 起可补的 M1 占位：本章助手/注入透明面板、向导主角/世界观字段、档位路由可写。
+
+</details>
+
+<details><summary>Phase 0 · 基建与栈修订 — ✅ 全部完成（2026-06-18）</summary>
+
+T0.1 monorepo 骨架 ✅ @devops · T0.2 16 MVP 表迁移（无漂移，users stub）✅ @db · T0.3 FastAPI 骨架 + config + 错误信封(带 request_id) + OpenAPI + `GET /jobs/:id` + structlog ✅ @backend · T0.4 前端骨架 + 纸感 token + OpenAPI→TS gen:api ✅ @frontend · T0.5 CI（含 pg service + alembic 漂移校验）✅ @devops · T0.6 架构栈修订回写规格 ✅ @docs。
+出口达成：backend 门禁绿、frontend 门禁绿、API 实跑 200 带 `x-request-id`。
+
+</details>
+
+---
+
+## 变更日志（append-only，最新在最上）
+
+> 格式：`- [YYYY-MM-DD] @skill 完成/进展 Txx — 一句话结果 + 影响的契约/文件`
+
+- [2026-06-18] @orchestrator — **🎉 M2 完成**（Wave E：T2.7✅）。`tests/test_m2_e2e.py` 真实 pg + 多档位 mock 网关（零 token）真跑通过 2 用例：主用例串 立项→写章 SSE→自动保存→**审稿 SSE(section/conflict)**→GET 历史→**残缺裁决触发 409 `CONFLICT_UNRESOLVED`+missing_indices(gate 事务前拦截未写库)**→全量裁决+终稿验收(200, accepted v2)→**DB 真源逐项断言**：chapters draft v1 留存 + accepted v2(content==final_text)、`chapter_digests.facts` 追溯终稿标记(证 #4 digest 从终稿非草稿)、`chapter_reviews.decisions` 写回、`usage_ledger` 三档位(writer/analyst/light)各落一条且事务已 commit；补充用例验证零冲突直通。**无新 bug**（M1 曾暴露的 ledger 提交 bug 在 M2 三档位无复发——review 流末 + accept 事务末均 commit）。最终全收口门禁绿：ruff/format 干净、mypy **90 文件**、pytest **114 passed**、**alembic 无漂移**（M2 全程零建表迁移）。M2 出口 DoD 全达成。下一阶段 **M3（伏笔+节奏）**。
+- [2026-06-18] @orchestrator — **Wave D 完成**（T2.6✅）。审稿报告页落地：`app/projects/[id]/review`（RSC 取历史）+ `components/review/*`（报告卡/就地标注/AcceptPanel）+ `lib/review/*`（SSE reducer/裁决完整性/请求体组装，纯逻辑单测）。`pnpm gen:api` 纳入 review/accept/reviews 三端点类型（不手写）；SSE 沿用 `useDraftStream` 的 fetch+ReadableStream 范式；五类冲突就地朱砂锚点(R6 段级降级)+裁决(采纳/忽略/手改)+**未决禁验收 gate**+409 missing_indices 高亮+「本次将更新」清单。前端门禁绿：gen:api/lint/tsc/**vitest 45(+21)**/build。memory +1 decision +2 gotchas。下一步 **Wave E：T2.7 M2 E2E**(@qa 真实 DB + mock 网关零 token)。
+- [2026-06-18] @orchestrator — **Wave C 完成**（T2.4✅ + T2.5✅，C3 扩稳定，单 @backend agent 顺序做）。三端点入 OpenAPI：`POST .../review`(SSE section/conflict/done) + `GET .../reviews`(新→旧) + `POST .../accept`。验收：冲突 gate（裁决 `conflict_index` 须覆盖 review.conflicts 全下标，缺判→409 `CONFLICT_UNRESOLVED`+missing_indices）→ 终稿 digest 提炼在事务外(R2，light 档)→ 单原子事务 promote(R4)+digest.append(#4)+set_decisions、末尾一次 commit、失败全回滚(R3)。`build_gateway_for_tier` 统一多档位网关注入。全仓门禁绿：ruff/format 干净、mypy **83 文件**、pytest **112 passed**（+9）。memory 登记 C3 扩 + 1 decision + 2 gotchas。下一步 **Wave D：T2.6**(@frontend 审稿页+裁决+验收 gate，先 `pnpm gen:api`)。
+- [2026-06-18] @orchestrator — **Wave B 完成**（T2.2✅，C4 扩稳定）。审稿子图落地：`build_review_graph`(START→continuity 并行审→collect→END，可扩四审) + `collect_reviews` 落 `chapter_reviews` 留痕 + `normalize_review`(SSE 加 `section`/`conflict`)；M1 `build_write_graph` 不动。划清边界：本任务到 collect+归一缝为止，`interrupt`/accept 事务接线交 T2.4（对齐 R3：accept 从领域表重读、checkpoint 仅控制流）。全仓门禁绿：ruff/format 干净、mypy **80 文件**、pytest **103 passed**。memory 登记 C4 扩 + 3 gotchas（reducer/add_node 重载/失败隔离两层）。下一步 **Wave C：T2.4+T2.5**（单 @backend agent 顺序做：验收事务+冲突 gate / review API+历史，避免 apps/api 路由+OpenAPI 写冲突）。
+- [2026-06-18] @orchestrator — **Wave A 完成**（T2.1✅ C6 稳定 + T2.3✅）。两个 fresh agent 并行（@llm packages/agents+llm_gateway ‖ @backend core/domain，目录不相交无冲突）。**补上 M1 遗留网关缺口**：`Gateway.run()` 经 instructor 接通 `output_schema→LlmResponse.parsed`（改 C1，见 contracts 变更日志）。T2.3 写侧三 repo（章节 accepted 晋升/digest append/审稿留痕+裁决）只 flush 不 commit、交 T2.4 事务。全仓 compose 门禁绿：ruff 干净、format 干净、mypy **77 文件**、pytest **89 passed**。memory 已登记 C6+C1 变更+2 decisions+3 gotchas。下一步 **Wave B：T2.2**(@llm 并行审图+collect 留痕+review SSE，依赖 C6+C4)。
+- [2026-06-18] @orchestrator — **进入 M2**：归档 Phase 1(M1) 至已归档；Phase 2 七任务拉入台账。计划核对两处偏差并据实修正：(1) **T2.3「Repository 逻辑」落 `packages/core/ww_core/domain/`（@backend owned）而非 `packages/db`**——DB 全 MVP 表 + 唯一约束 `(project_id,chapter_no,version)` 已在 T0.2(@db) 一次建齐、M2 无新建表迁移，故 T2.3 由 @backend 承接 Repository 逻辑；(2) **网关结构化输出缺口**：`Gateway.run()` 当前不消费 `output_schema`/不填 `LlmResponse.parsed`（instructor 未接线），续审依赖此，归入 T2.1(@llm)。启动 **Wave A：T2.1(@llm·packages/agents+llm_gateway) ‖ T2.3(@backend·core/domain)**（不同目录，无写冲突）。
+- [2026-06-18] @orchestrator — **🎉 M1 完成**（Wave E：T1.9 E2E✅）。真实 DB + mock 网关 E2E 走通 立项→写章 SSE→自动保存→DB 真源断言（projects/chapters/usage_ledger）。**E2E 暴露并修复一个生产 bug**：draft SSE 端点未提交注入 ledger 的请求 session（`SqlAlchemyLedgerSink` 按设计只 flush、不 commit——写库事务归编排层），导致真实写章的 `usage_ledger` 行被回滚丢失（违背「成本账本从第一天」）。修复：draft 端点流耗尽后 `await session.commit()`；E2E 改用请求 session 做 ledger、去掉手动 commit 以回归校验该提交。最终全门禁绿：ruff / mypy 68 / pytest **57** / alembic 无漂移；前端 gen:api/lint/tsc/vitest 24/build 绿。
+- [2026-06-18] @orchestrator — **Wave D 完成**（T1.5+T1.6+T1.8✅，单前端 agent）。`pnpm gen:api` 重生成客户端含全 M1 端点；路由 `/`(作品库)、`/projects/new`(5 步向导)、`/projects/[id]/write`(工作台 SSE 打字机+停+自动保存)、`/settings/providers`(脱敏+测试连接+能力徽标)。前端门禁全绿：gen:api/lint/tsc/**test 24**/build。M1 占位（无 API 支撑、未造假端点）：单章导航、本章助手/注入透明面板(M2)、向导主角/世界观字段折叠进 premise、档位路由只读。下一步 Wave E：T1.9 E2E(@qa, mock 网关)。
+- [2026-06-18] @orchestrator — **Wave C 完成**（T1.4✅ 立项+写章 API，**C3 稳定**：M1 端点全落）。记忆→网关→编排器串成 HTTP：5 端点入 OpenAPI，写章 SSE(token/done/error) + 幂等自动保存，lifespan 幂等 seed stub user（修 owner_id FK 缺口）。网关从凭据构建、测试经 dependency_overrides 注 mock。全仓 compose 绿：ruff、mypy **68 文件**、pytest **56 passed**。后端/编排全部完成。下一步 Wave D：单个前端 agent 做 T1.5+T1.6+T1.8（同一 Next 应用合并做，先 `pnpm gen:api`），避免 apps/web 写冲突。
+- [2026-06-18] @orchestrator — **Wave B 完成**（T1.3✅ 编排器/C4稳定 + T1.7✅ 凭据/C3部分）。两个 fresh agent 并行（各 ~90–98k tokens，比 fork 省）。全仓 compose 门禁绿：ruff、mypy **61 文件**、pytest **48 passed**。修了跨包测试碰撞（apps/api `fakes.py`→`fakes_providers.py`；root mypy 排除 `conftest.py` 解决多 rootless conftest 同名）。⚠️ **Wave C 前置**：DB 无 stub user，而 projects/usage_ledger/provider_credentials.owner_id 均 FK→users.id；T1.4 须先幂等 seed stub user(`uuid(int=1)`)。下一步 Wave C：T1.4(@backend 立项+写章 SSE+自动保存，依赖 C4)。
+- [2026-06-18] @orchestrator — **Wave A 完成**（T1.1✅ + T1.2✅，契约 C1/C5 稳定）。全仓 compose 门禁绿：ruff 干净、mypy 45 文件、pytest **27 passed**（9 基线 +10 网关 +8 记忆）。T1.1 网关由 orchestrator 内联实现（原 fork 因 stream idle timeout 早夭、零产出）；T1.2 记忆由 fork 完成。下一步 Wave B：T1.3(@llm 写章节点+SSE，依赖 C1+C5) + T1.7(@backend 凭据，依赖 C1)。
+- [2026-06-18] @orchestrator — **进入 M1**：把 Phase 1 九任务拉入台账并归档 Phase 0；新增 workspace 成员 `packages/llm_gateway`(ww-llm-gateway) + `packages/core`(ww-core)，装 openai/instructor/langgraph/langgraph-checkpoint-postgres/cryptography/tenacity，根 `pyproject.toml` members+mypy_path 已更，`uv sync` 通过，基线门禁全绿(ruff/mypy 27 文件/pytest 9 passed)。记录 decision：`assemble` 返回中性文本以解耦 T1.1‖T1.2。启动 Wave A（T1.1 @llm + T1.2 @backend）。
+- [2026-06-18] @devops/@db/@backend/@frontend — **Phase 0 全部完成**：monorepo(uv workspace + pnpm)、16 MVP 表迁移(无漂移)、FastAPI(structlog+request_id+错误信封+/jobs/:id)、Next.js(纸感 token + OpenAPI→TS gen:api)、CI。门禁全绿，API 实跑 200。下一步 M1/T1.1(网关接口)。
+- [2026-06-18] @docs — DEV_PLAN 与规格对齐修订：T0.3 加可观测性底座(structlog+request_id)、T1.1 加 `usage_ledger` 记账(从第一天)、T0.2/T2.3 统一建表口径(全 MVP 表一次建齐, T2.3 仅 Repository)、T4.2 把文风漂移并入第四审、新增 `PUT .../draft` 自动保存端点并回写 ARCH §7.2 + contracts C3。
+- [2026-06-17] @docs — 四份规格 + CLAUDE.md + 协同系统（PROGRESS/memory）就绪；可进 Phase 0 / T0.1。
--- a/apps/api/tests/test_review_accept.py
+++ b/apps/api/tests/test_review_accept.py
@@ -0,0 +1,286 @@
+"""T2.5 review API + 历史 / T2.4 验收事务 + 冲突 gate（内存替身，无 DB/无网络）。
+
+覆盖：review SSE 帧序列（section/conflict/done）、reviews 历史、accept happy path
+（晋升 + digest + 裁决）、冲突 gate 拦截（缺判 → CONFLICT_UNRESOLVED 不写库）、
+事务回滚（某步失败全回滚不 commit）。审稿/digest 网关均注 mock（产 parsed），绝不联网。
+"""
+
+from __future__ import annotations
+
+import uuid
+
+import httpx
+import pytest
+from fakes_projects import (
+    FakeChapterRepo,
+    FakeDigestAppendRepo,
+    FakeReviewGateway,
+    FakeReviewRepo,
+    FakeSession,
+)
+from test_projects import _empty_memory_repos
+from ww_agents import ContinuityReview
+from ww_agents.schemas import Conflict
+from ww_shared import ErrorCode
+
+
+def _make_client(
+    *,
+    chapter_repo: FakeChapterRepo | None = None,
+    review_repo: FakeReviewRepo | None = None,
+    digest_repo: FakeDigestAppendRepo | None = None,
+    review_gateway: FakeReviewGateway | None = None,
+    digest_gateway: FakeReviewGateway | None = None,
+    session: FakeSession | None = None,
+) -> tuple[
+    httpx.AsyncClient,
+    FakeChapterRepo,
+    FakeReviewRepo,
+    FakeDigestAppendRepo,
+    FakeSession,
+]:
+    import os
+
+    os.environ.setdefault("CREDENTIAL_ENC_KEY", "x" * 44)
+    from ww_api.main import create_app
+    from ww_api.services.project_deps import (
+        get_chapter_repo,
+        get_digest_append_repo,
+        get_digest_gateway,
+        get_memory_repos,
+        get_review_gateway,
+        get_review_repo,
+    )
+    from ww_db import get_session
+
+    chapter_repo = chapter_repo or FakeChapterRepo()
+    review_repo = review_repo or FakeReviewRepo()
+    digest_repo = digest_repo or FakeDigestAppendRepo()
+    review_gateway = review_gateway or FakeReviewGateway(parsed=ContinuityReview())
+    digest_gateway = digest_gateway or FakeReviewGateway(parsed=ContinuityReview())
+    session = session or FakeSession()
+
+    app = create_app()
+    app.dependency_overrides[get_chapter_repo] = lambda: chapter_repo
+    app.dependency_overrides[get_review_repo] = lambda: review_repo
+    app.dependency_overrides[get_digest_append_repo] = lambda: digest_repo
+    app.dependency_overrides[get_memory_repos] = _empty_memory_repos
+    app.dependency_overrides[get_review_gateway] = lambda: review_gateway
+    app.dependency_overrides[get_digest_gateway] = lambda: digest_gateway
+    app.dependency_overrides[get_session] = lambda: session
+    transport = httpx.ASGITransport(app=app)
+    client = httpx.AsyncClient(transport=transport, base_url="http://test")
+    return client, chapter_repo, review_repo, digest_repo, session
+
+
+# ---- T2.5 review SSE ----
+
+
+@pytest.mark.asyncio
+async def test_review_stream_yields_section_and_done() -> None:
+    gw = FakeReviewGateway(parsed=ContinuityReview())
+    client, _, review_repo, _, session = _make_client(review_gateway=gw)
+    pid = uuid.uuid4()
+    async with client:
+        resp = await client.post(
+            f"/projects/{pid}/chapters/1/review", json={"draft": "本章草稿正文。"}
+        )
+    assert resp.status_code == 200
+    assert resp.headers["content-type"].startswith("text/event-stream")
+    text = resp.text
+    assert "event: section" in text
+    assert '"name": "continuity"' in text
+    assert '"status": "done"' in text
+    assert "event: done" in text
+    # collect 落了一行留痕；端点流耗尽后 commit。
+    assert len(review_repo.rows) == 1
+    assert session.commits == 1
+
+
+@pytest.mark.asyncio
+async def test_review_stream_emits_conflict_events() -> None:
+    review = ContinuityReview(
+        conflicts=[
+            Conflict(type="性格漂移", where="第3段", refs=["第2章"], suggestion="改回冷静"),
+        ]
+    )
+    gw = FakeReviewGateway(parsed=review)
+    client, _, review_repo, _, _ = _make_client(review_gateway=gw)
+    pid = uuid.uuid4()
+    async with client:
+        resp = await client.post(f"/projects/{pid}/chapters/1/review", json={"draft": "草稿"})
+    text = resp.text
+    assert "event: conflict" in text
+    assert '"type": "性格漂移"' in text
+    # 冲突落进 chapter_reviews 留痕。
+    assert review_repo.rows[0].conflicts[0]["type"] == "性格漂移"
+
+
+@pytest.mark.asyncio
+async def test_review_without_draft_falls_back_to_saved() -> None:
+    chapter_repo = FakeChapterRepo()
+    pid = uuid.uuid4()
+    await chapter_repo.save_draft(pid, 1, text="已存草稿")
+    client, _, _, _, _ = _make_client(chapter_repo=chapter_repo)
+    async with client:
+        resp = await client.post(f"/projects/{pid}/chapters/1/review", json={})
+    assert resp.status_code == 200
+    assert "event: done" in resp.text
+
+
+@pytest.mark.asyncio
+async def test_review_without_any_draft_404() -> None:
+    client, _, _, _, _ = _make_client()
+    pid = uuid.uuid4()
+    async with client:
+        resp = await client.post(f"/projects/{pid}/chapters/9/review", json={})
+    assert resp.status_code == 404
+    assert resp.json()["error"]["code"] == ErrorCode.NOT_FOUND
+
+
+# ---- T2.5 reviews 历史 ----
+
+
+@pytest.mark.asyncio
+async def test_list_reviews_returns_history_newest_first() -> None:
+    review_repo = FakeReviewRepo()
+    pid = uuid.uuid4()
+    await review_repo.record(pid, 1, conflicts=[{"type": "设定违例"}])
+    await review_repo.record(pid, 1, conflicts=[])
+    client, _, _, _, _ = _make_client(review_repo=review_repo)
+    async with client:
+        resp = await client.get(f"/projects/{pid}/chapters/1/reviews")
+    assert resp.status_code == 200
+    rows = resp.json()["reviews"]
+    assert len(rows) == 2
+    # 新→旧：最近 record 的（空冲突）在前。
+    assert rows[0]["conflicts"] == []
+
+
+# ---- T2.4 accept happy path ----
+
+
+async def _seed_review(
+    review_repo: FakeReviewRepo, pid: uuid.UUID, conflicts: list[dict[str, object]]
+) -> None:
+    await review_repo.record(pid, 1, conflicts=conflicts)
+
+
+@pytest.mark.asyncio
+async def test_accept_promotes_appends_digest_records_decisions() -> None:
+    review_repo = FakeReviewRepo()
+    pid = uuid.uuid4()
+    await _seed_review(
+        review_repo, pid, [{"type": "性格漂移", "where": "x", "refs": [], "suggestion": "y"}]
+    )
+    from ww_api.services.digest_extraction import ChapterDigestFacts
+
+    digest_gw = FakeReviewGateway(parsed=ChapterDigestFacts(summary="本章主线", events=["开战"]))
+    client, chapter_repo, _, digest_repo, session = _make_client(
+        review_repo=review_repo, digest_gateway=digest_gw
+    )
+    async with client:
+        resp = await client.post(
+            f"/projects/{pid}/chapters/1/accept",
+            json={
+                "final_text": "作者改稿后的终稿正文。",
+                "decisions": [{"conflict_index": 0, "verdict": "accept"}],
+            },
+        )
+    assert resp.status_code == 200
+    body = resp.json()
+    assert body["accepted_version"] == 1
+    assert body["digest_added"] is True
+    assert body["decisions_recorded"] == 1
+    # 晋升落 accepted v1，终稿正文。
+    accepted = await chapter_repo.latest_accepted(pid, 1)
+    assert accepted is not None
+    assert accepted.content == "作者改稿后的终稿正文。"
+    # digest 从终稿提炼（不变量 #4）。
+    assert digest_repo.rows[0][2]["summary"] == "本章主线"
+    # 裁决写回留痕。
+    assert review_repo.rows[0].decisions is not None
+    assert review_repo.rows[0].decisions["items"][0]["verdict"] == "accept"
+    # 单事务一次 commit。
+    assert session.commits == 1
+
+
+@pytest.mark.asyncio
+async def test_accept_with_no_review_succeeds() -> None:
+    """无审稿留痕（零冲突）→ gate 直通，仍晋升 + 提炼 digest。"""
+    from ww_api.services.digest_extraction import ChapterDigestFacts
+
+    digest_gw = FakeReviewGateway(parsed=ChapterDigestFacts(summary="s"))
+    client, chapter_repo, _, digest_repo, session = _make_client(digest_gateway=digest_gw)
+    pid = uuid.uuid4()
+    async with client:
+        resp = await client.post(
+            f"/projects/{pid}/chapters/1/accept",
+            json={"final_text": "终稿", "decisions": []},
+        )
+    assert resp.status_code == 200
+    assert resp.json()["accepted_version"] == 1
+    assert session.commits == 1
+    assert len(digest_repo.rows) == 1
+
+
+# ---- T2.4 冲突 gate 拦截 ----
+
+
+@pytest.mark.asyncio
+async def test_accept_blocks_when_conflict_unresolved() -> None:
+    review_repo = FakeReviewRepo()
+    pid = uuid.uuid4()
+    await _seed_review(
+        review_repo,
+        pid,
+        [
+            {"type": "性格漂移", "where": "a", "refs": [], "suggestion": "b"},
+            {"type": "设定违例", "where": "c", "refs": [], "suggestion": "d"},
+        ],
+    )
+    digest_gw = FakeReviewGateway(parsed=ContinuityReview())
+    client, chapter_repo, _, digest_repo, session = _make_client(
+        review_repo=review_repo, digest_gateway=digest_gw
+    )
+    async with client:
+        resp = await client.post(
+            f"/projects/{pid}/chapters/1/accept",
+            json={
+                "final_text": "终稿",
+                # 只裁决了 0 号冲突，1 号缺判 → 拦截。
+                "decisions": [{"conflict_index": 0, "verdict": "ignore"}],
+            },
+        )
+    assert resp.status_code == 409
+    assert resp.json()["error"]["code"] == ErrorCode.CONFLICT_UNRESOLVED
+    assert resp.json()["error"]["details"]["missing_conflict_indices"] == [1]
+    # 不写库：未晋升、未提炼 digest、未提交、未调 digest 网关。
+    assert await chapter_repo.latest_accepted(pid, 1) is None
+    assert len(digest_repo.rows) == 0
+    assert session.commits == 0
+    assert len(digest_gw.requests) == 0
+
+
+# ---- T2.4 事务回滚 ----
+
+
+@pytest.mark.asyncio
+async def test_accept_rolls_back_when_a_step_fails() -> None:
+    """裁决留痕步骤抛错 → 整体回滚（不 commit）。"""
+    review_repo = FakeReviewRepo(fail_set_decisions=True)
+    pid = uuid.uuid4()
+    await _seed_review(review_repo, pid, [])
+    from ww_api.services.digest_extraction import ChapterDigestFacts
+
+    digest_gw = FakeReviewGateway(parsed=ChapterDigestFacts(summary="s"))
+    client, _, _, _, session = _make_client(review_repo=review_repo, digest_gateway=digest_gw)
+    # set_decisions 在事务中途抛错；ASGITransport 默认上抛未处理异常。
+    with pytest.raises(RuntimeError, match="rollback test"):
+        async with client:
+            await client.post(
+                f"/projects/{pid}/chapters/1/accept",
+                json={"final_text": "终稿", "decisions": []},
+            )
+    # 关键：事务未 commit（半态不落库，整体回滚）。
+    assert session.commits == 0
--- a/apps/api/ww_api/services/accept_service.py
+++ b/apps/api/ww_api/services/accept_service.py
@@ -0,0 +1,136 @@
+"""验收事务 + 冲突 gate（T2.4；ARCH §5.5 四步，不变量 #3/#4/#5）。
+
+把作者裁决后的变更**单原子事务**落库（R3/R4）：晋升终稿 → 终稿提炼 digest →
+裁决留痕 →（占位）人物/伏笔状态。digest 提炼在**事务外**先做（R2）。
+
+冲突 gate（R5，事务前拦截）：核对最近一次审稿留痕的**每个冲突**在裁决清单里都有
+采纳/忽略/手改之一；缺判 → `AppError(CONFLICT_UNRESOLVED)`，不写库。
+
+accept 是**确定性事务代码**，不跑 graph 正文/审稿节点；真相从领域表（`chapters` /
+`chapter_reviews`）重读（R3，不变量 #5）。提交边界：全部只 flush → 末尾一次
+`await session.commit()`；任一步失败 → 整体回滚。
+"""
+
+from __future__ import annotations
+
+import uuid
+from dataclasses import dataclass
+
+import structlog
+from ww_core.domain.chapter_repo import ChapterRepo
+from ww_core.domain.digest_repo import DigestAppendRepo
+from ww_core.domain.review_repo import ReviewRepo, ReviewView
+from ww_shared import AppError, ErrorCode
+
+from ww_api.schemas.projects import ConflictDecision
+
+log = structlog.get_logger(__name__)
+
+
+@dataclass(frozen=True)
+class AcceptOutcome:
+    """验收事务结果（供端点组「本次将更新」清单）。"""
+
+    accepted_version: int
+    digest_added: bool
+    decisions_recorded: int
+    review_id: uuid.UUID | None
+
+
+def assert_conflicts_resolved(
+    latest_review: ReviewView | None,
+    decisions: list[ConflictDecision],
+) -> None:
+    """冲突 gate（R5）：最近审稿的每个冲突都须有裁决，否则 `CONFLICT_UNRESOLVED`。
+
+    判据：以最近审稿留痕的 `conflicts` 列表下标为冲突身份；裁决清单里出现的
+    `conflict_index` 集合必须**覆盖** `range(len(conflicts))`。缺判 → 拦截（不写库）。
+    无审稿留痕或零冲突 → 直接通过（无需裁决）。纯函数：只判定、不副作用。
+    """
+    if latest_review is None:
+        return
+    conflict_count = len(latest_review.conflicts)
+    if conflict_count == 0:
+        return
+    decided = {d.conflict_index for d in decisions}
+    missing = [i for i in range(conflict_count) if i not in decided]
+    if missing:
+        raise AppError(
+            ErrorCode.CONFLICT_UNRESOLVED,
+            "存在未裁决的冲突，无法验收：请对每个冲突选择 采纳/忽略/手改",
+            {"missing_conflict_indices": missing, "conflict_count": conflict_count},
+        )
+
+
+def _serialize_decisions(
+    latest_review: ReviewView | None,
+    decisions: list[ConflictDecision],
+) -> dict[str, object]:
+    """把裁决清单序列化为可落 `chapter_reviews.decisions` 的 JSON 形（确定性）。"""
+    return {
+        "items": [
+            {
+                "conflict_index": d.conflict_index,
+                "verdict": d.verdict,
+                "note": d.note,
+            }
+            for d in sorted(decisions, key=lambda x: x.conflict_index)
+        ],
+        "conflict_count": len(latest_review.conflicts) if latest_review else 0,
+    }
+
+
+async def run_accept_transaction(
+    *,
+    session: object,
+    chapter_repo: ChapterRepo,
+    digest_repo: DigestAppendRepo,
+    review_repo: ReviewRepo,
+    project_id: uuid.UUID,
+    chapter_no: int,
+    final_text: str,
+    digest_facts: dict[str, object],
+    latest_review: ReviewView | None,
+    decisions: list[ConflictDecision],
+) -> AcceptOutcome:
+    """单原子事务落库（R3/R4，§5.5 步骤 1–4），末尾一次 commit。
+
+    `digest_facts` 已在事务外提炼好（R2）。各 repo 写方法只 flush；本函数统一在末尾
+    `await session.commit()`，任一步抛错由调用方/上下文回滚（不显式半提交）。
+    `session` 类型用 object 以免绑定 SQLAlchemy（测试注入 fake session 亦可）。
+    """
+    # 步骤 1：终稿晋升 accepted 新 version（max+1，草稿行保留，R4）。
+    chapter = await chapter_repo.promote_to_accepted(project_id, chapter_no, content=final_text)
+
+    # 步骤 2：终稿 digest 追加（append-only，不变量 #4）。
+    await digest_repo.append(project_id, chapter_no, facts=digest_facts)
+
+    # 步骤 4：裁决留痕（写到最近一次审稿行；无审稿行则跳过）。
+    review_id: uuid.UUID | None = None
+    if latest_review is not None:
+        updated = await review_repo.set_decisions(
+            latest_review.id,
+            decisions=_serialize_decisions(latest_review, decisions),
+        )
+        review_id = updated.id
+
+    # 步骤 3（占位）：人物 latest_state / 伏笔状态更新——M3 才正式接伏笔表，
+    # 这里按 §5.5 步骤 3 留占位，不引入 M3 表逻辑（避免越界写未就绪的状态机）。
+    # TODO(M3): 按裁决应用 latest_state 变更 + 伏笔登记/到期扫描（§6.2）。
+
+    await session.commit()  # type: ignore[attr-defined]  # AsyncSession.commit()（fake 同形）
+
+    log.info(
+        "chapter_accepted",
+        project_id=str(project_id),
+        chapter_no=chapter_no,
+        accepted_version=chapter.version,
+        decisions_recorded=len(decisions),
+        review_id=str(review_id) if review_id else None,
+    )
+    return AcceptOutcome(
+        accepted_version=chapter.version,
+        digest_added=True,
+        decisions_recorded=len(decisions),
+        review_id=review_id,
+    )
--- a/apps/api/ww_api/services/digest_extraction.py
+++ b/apps/api/ww_api/services/digest_extraction.py
@@ -0,0 +1,99 @@
+"""终稿 digest 提炼（验收事务的 R2 步骤；ARCH §5.5 / §6.1，不变量 #4）。
+
+验收时用**终稿**（作者裁决/改稿后的最终文本）经网关跑一次轻量结构化提炼，得 digest
+（结构化事实）。**在开原子事务之前**完成——别在持开事务里跨网络调 LLM（R2）。
+
+`ChapterDigestFacts` 是 digest 的结构化形：本章关键事实清单，供后续章节注入近况摘要
+（assemble 的 `recent_digests`）+ 一致性比对。轻量档位（tier=light），只读终稿、产事实。
+
+记账：digest 提炼这次网关调用产 usage，经 `SqlAlchemyLedgerSink` flush 进**同一请求
+session**——由验收事务在末尾一次 commit 落 `usage_ledger`（见 ledger gotcha）。
+"""
+
+from __future__ import annotations
+
+import uuid
+from typing import Any
+
+import structlog
+from pydantic import BaseModel, Field
+from ww_llm_gateway import Gateway
+from ww_llm_gateway.types import Block, LlmRequest, Scope
+
+log = structlog.get_logger(__name__)
+
+DIGEST_SYSTEM_PROMPT = """你是长篇连载小说的「章节摘要提炼」。读入本章**终稿**，抽取后续\
+章节一致性比对所需的结构化事实，产出结构化摘要。
+
+只提炼**终稿明确写出**的事实，不臆造、不推断未写明的内容：
+- summary：本章一句话主线（≤60 字）；
+- events：本章发生的关键事件（按时序）；
+- characters：登场人物及其本章状态变化（姓名 + 状态/变化）；
+- locations：出现的地点；
+- foreshadow：本章埋下或回收的伏笔线索。
+
+纪律：只读终稿、只产事实，不评价、不改稿、不报冲突（冲突在审稿期产）。"""
+
+
+class CharacterStateFact(BaseModel):
+    """单个人物的本章状态事实。"""
+
+    name: str = Field(description="人物姓名")
+    state: str = Field(description="本章该人物的状态/变化")
+
+
+class ChapterDigestFacts(BaseModel):
+    """终稿提炼的结构化事实（落 `chapter_digests.facts`）。"""
+
+    summary: str = Field(default="", description="本章一句话主线")
+    events: list[str] = Field(default_factory=list, description="关键事件（时序）")
+    characters: list[CharacterStateFact] = Field(
+        default_factory=list, description="登场人物及其本章状态变化"
+    )
+    locations: list[str] = Field(default_factory=list, description="出现的地点")
+    foreshadow: list[str] = Field(default_factory=list, description="埋下/回收的伏笔线索")
+
+
+def build_digest_request(
+    *, final_text: str, user_id: uuid.UUID, project_id: uuid.UUID
+) -> LlmRequest:
+    """据终稿构造 digest 提炼请求（纯函数）。
+
+    `system_prompt` 进缓存断点前块；终稿进 `input`（断点后）。tier=light（不变量 #2）。
+    `output_schema=ChapterDigestFacts` → 网关经 instructor 保证产结构化实例（C1）。
+    """
+    return LlmRequest(
+        tier="light",
+        system=[Block(text=DIGEST_SYSTEM_PROMPT, cache=True)],
+        input=f"## 本章终稿\n{final_text}",
+        output_schema=ChapterDigestFacts,
+        scope=Scope(user_id=user_id, project_id=project_id),
+    )
+
+
+async def extract_digest_facts(
+    gateway: Gateway,
+    *,
+    final_text: str,
+    user_id: uuid.UUID,
+    project_id: uuid.UUID,
+    chapter_no: int,
+) -> dict[str, Any]:
+    """从终稿提炼结构化事实，返回可直接落 `facts` 列的 dict。
+
+    **在开原子事务之前**调用（R2：别在持开事务里跨网络调 LLM）。`gateway.run(req).parsed`
+    带 schema 时必非 None（C1）；防御性兜底：若 parsed 缺失则落空事实（不崩验收）。
+    日志脱敏：只记终稿长度，不记正文。
+    """
+    req = build_digest_request(final_text=final_text, user_id=user_id, project_id=project_id)
+    resp = await gateway.run(req)
+    parsed = resp.parsed
+    facts = parsed.model_dump() if parsed is not None else ChapterDigestFacts().model_dump()
+    log.info(
+        "digest_extracted",
+        project_id=str(project_id),
+        chapter_no=chapter_no,
+        final_text_len=len(final_text),
+        event_count=len(facts.get("events", [])),
+    )
+    return facts
--- a/apps/web/app/projects/[id]/review/page.tsx
+++ b/apps/web/app/projects/[id]/review/page.tsx
@@ -0,0 +1,40 @@
+import { notFound } from "next/navigation";
+
+import { ReviewReport } from "@/components/review/ReviewReport";
+import { fetchProject, fetchReviews } from "@/lib/api/server";
+import { latestReview } from "@/lib/review/history";
+
+interface PageProps {
+  params: Promise<{ id: string }>;
+  searchParams: Promise<{ chapter?: string }>;
+}
+
+const DEFAULT_CHAPTER_NO = 1;
+
+// 审稿报告页（UX §6.4）。Server Component 取项目 + 审稿留痕历史（新→旧）；
+// ReviewReport（Client）承载 SSE 重审 / 裁决 / 验收交互。
+export default async function ReviewPage({ params, searchParams }: PageProps) {
+  const { id } = await params;
+  const { chapter } = await searchParams;
+  const chapterNo = parsePositiveInt(chapter) ?? DEFAULT_CHAPTER_NO;
+  try {
+    const project = await fetchProject(id);
+    const history = await fetchReviews(id, chapterNo);
+    return (
+      <ReviewReport
+        project={project}
+        chapterNo={chapterNo}
+        initialReview={latestReview(history.reviews)}
+        initialDraft=""
+      />
+    );
+  } catch {
+    notFound();
+  }
+}
+
+function parsePositiveInt(raw: string | undefined): number | null {
+  if (!raw) return null;
+  const n = Number.parseInt(raw, 10);
+  return Number.isInteger(n) && n > 0 ? n : null;
+}
--- a/apps/web/components/review/AcceptPanel.tsx
+++ b/apps/web/components/review/AcceptPanel.tsx
@@ -0,0 +1,76 @@
+"use client";
+
+import type { AcceptResponse } from "@/lib/api/types";
+
+interface AcceptPanelProps {
+  conflictCount: number;
+  unresolvedCount: number;
+  accepting: boolean;
+  result: AcceptResponse | null;
+  onAccept: () => void;
+}
+
+// 验收 gate（UX §9 / §8.4）：未决禁验收（置灰 + 文案），验收后呈现「本次将更新」清单。
+export function AcceptPanel({
+  conflictCount,
+  unresolvedCount,
+  accepting,
+  result,
+  onAccept,
+}: AcceptPanelProps) {
+  const blocked = unresolvedCount > 0;
+
+  if (result) {
+    return (
+      <div className="rounded border border-pass/50 bg-panel p-4">
+        <h3 className="mb-2 text-sm font-semibold text-pass">本章已验收</h3>
+        <ul className="space-y-1 text-xs text-ink-soft">
+          <li>
+            晋升版次：
+            <span className="font-mono text-ink">v{result.accepted_version}</span>
+          </li>
+          <li>
+            章节摘要：{result.digest_added ? "已新增一行" : "未变更"}
+          </li>
+          <li>
+            裁决写回：
+            <span className="font-mono text-ink">
+              {result.decisions_recorded}
+            </span>{" "}
+            条
+          </li>
+          {result.review_id ? (
+            <li className="truncate">
+              留痕：<span className="font-mono">{result.review_id}</span>
+            </li>
+          ) : null}
+        </ul>
+      </div>
+    );
+  }
+
+  return (
+    <div className="rounded border border-line bg-panel p-4">
+      {blocked ? (
+        <p className="mb-2 text-xs text-conflict" role="status">
+          尚有 {unresolvedCount} 项冲突未裁决，处理完才能验收。
+        </p>
+      ) : (
+        <p className="mb-2 text-xs text-ink-soft">
+          {conflictCount === 0
+            ? "无冲突，可直接验收。"
+            : "全部冲突已裁决，可验收本章。"}
+        </p>
+      )}
+      <button
+        type="button"
+        onClick={onAccept}
+        disabled={blocked || accepting}
+        aria-disabled={blocked || accepting}
+        className="w-full rounded bg-cinnabar px-4 py-2 text-sm text-panel hover:opacity-90 disabled:cursor-not-allowed disabled:opacity-40"
+      >
+        {accepting ? "验收中…" : "全部处理完 → 验收本章"}
+      </button>
+    </div>
+  );
+}
--- a/apps/web/components/review/AnnotatedText.tsx
+++ b/apps/web/components/review/AnnotatedText.tsx
@@ -0,0 +1,54 @@
+"use client";
+
+import type { ReviewConflict } from "@/lib/review/sse";
+
+interface AnnotatedTextProps {
+  text: string;
+  conflicts: ReviewConflict[];
+  // 当前聚焦的冲突下标（来自报告卡「跳转」），用于锚点联动。
+  focusedIndex: number | null;
+  onAnchorClick: (index: number) => void;
+}
+
+// 正文就地标注（UX §8.3 / §6.1）。
+// M2 占位（R6）：`where` 是文字定位（如「第4段」），M2 不做精确字符 range —
+// 改为段级/锚点联动：每个冲突渲染为一枚朱砂波浪线锚点挂在正文上方，点击=回跳报告卡。
+// 精确 inline range 标注留 M3+（需后端给字符 offset）。
+export function AnnotatedText({
+  text,
+  conflicts,
+  focusedIndex,
+  onAnchorClick,
+}: AnnotatedTextProps) {
+  return (
+    <div className="flex h-full flex-col">
+      {conflicts.length > 0 ? (
+        <div className="mb-3 flex flex-wrap gap-2 border-b border-line pb-3">
+          {conflicts.map((c, i) => (
+            <button
+              key={i}
+              type="button"
+              id={`anchor-${i}`}
+              onClick={() => onAnchorClick(i)}
+              aria-current={focusedIndex === i ? "true" : undefined}
+              className={`conflict-anchor rounded px-2 py-0.5 text-xs ${
+                focusedIndex === i
+                  ? "bg-cinnabar text-panel"
+                  : "text-conflict hover:bg-[var(--color-conflict)]/10"
+              }`}
+              title={`${c.type}：${c.where || "正文"}`}
+            >
+              <span aria-hidden="true">⌇</span> {c.type}
+              {c.where ? ` · ${c.where}` : ""}
+            </button>
+          ))}
+        </div>
+      ) : null}
+      <article className="flex-1 overflow-auto whitespace-pre-wrap font-serif text-[17px] leading-[1.9] text-ink">
+        {text || (
+          <span className="text-ink-soft/60">（无待审正文，先去写作页起草本章）</span>
+        )}
+      </article>
+    </div>
+  );
+}
--- a/apps/web/components/review/ConflictCard.tsx
+++ b/apps/web/components/review/ConflictCard.tsx
@@ -0,0 +1,119 @@
+"use client";
+
+import type { ReviewConflict } from "@/lib/review/sse";
+import type { DecisionDraft, Verdict } from "@/lib/review/decisions";
+
+interface ConflictCardProps {
+  index: number;
+  conflict: ReviewConflict;
+  draft: DecisionDraft;
+  missing: boolean;
+  onVerdict: (index: number, verdict: Verdict) => void;
+  onNote: (index: number, note: string) => void;
+  onJump: (index: number) => void;
+}
+
+const VERDICT_OPTIONS: { value: Verdict; label: string }[] = [
+  { value: "accept", label: "采纳改法" },
+  { value: "ignore", label: "忽略" },
+  { value: "manual", label: "手改" },
+];
+
+// 单个冲突报告卡（UX §6.4）：五类徽标 + where + refs + suggestion + 裁决三态。
+// 冲突=赭红；未决/缺判时加图标+文案（不单靠色，a11y §10）。
+export function ConflictCard({
+  index,
+  conflict,
+  draft,
+  missing,
+  onVerdict,
+  onNote,
+  onJump,
+}: ConflictCardProps) {
+  const resolved = draft.verdict !== null;
+  return (
+    <li
+      id={`conflict-card-${index}`}
+      className={`rounded border bg-panel p-4 ${
+        missing
+          ? "border-conflict ring-1 ring-conflict"
+          : resolved
+            ? "border-pass/40"
+            : "border-line"
+      }`}
+    >
+      <div className="flex items-start gap-3">
+        <span
+          className="shrink-0 rounded bg-[var(--color-conflict)]/10 px-2 py-0.5 text-xs text-conflict"
+          aria-hidden="true"
+        >
+          ⚠ {conflict.type}
+        </span>
+        <p className="flex-1 text-sm text-ink">{conflict.suggestion}</p>
+      </div>
+
+      <div className="mt-2 flex flex-wrap items-center gap-2 pl-1 text-xs text-ink-soft">
+        {conflict.where ? (
+          <button
+            type="button"
+            onClick={() => onJump(index)}
+            className="rounded border border-line px-2 py-0.5 hover:border-cinnabar hover:text-cinnabar"
+          >
+            ▸ 跳转 {conflict.where}
+          </button>
+        ) : null}
+        {conflict.refs.map((ref) => (
+          <span key={ref} className="font-mono">
+            ▸ {ref}
+          </span>
+        ))}
+      </div>
+
+      <fieldset className="mt-3">
+        <legend className="sr-only">冲突 {index + 1} 裁决</legend>
+        <div className="flex flex-wrap items-center gap-2">
+          {VERDICT_OPTIONS.map((opt) => {
+            const active = draft.verdict === opt.value;
+            return (
+              <button
+                key={opt.value}
+                type="button"
+                aria-pressed={active}
+                onClick={() => onVerdict(index, opt.value)}
+                className={`rounded px-3 py-1 text-xs ${
+                  active
+                    ? "bg-cinnabar text-panel"
+                    : "border border-line text-ink hover:border-cinnabar"
+                }`}
+              >
+                {opt.label}
+              </button>
+            );
+          })}
+          {resolved ? (
+            <span className="text-xs text-pass" aria-hidden="true">
+              ✓ 已裁决
+            </span>
+          ) : (
+            <span className="text-xs text-conflict">未裁决</span>
+          )}
+        </div>
+        {draft.verdict === "manual" ? (
+          <div className="mt-2">
+            <label htmlFor={`note-${index}`} className="sr-only">
+              手改说明
+            </label>
+            <input
+              id={`note-${index}`}
+              type="text"
+              value={draft.note}
+              onChange={(e) => onNote(index, e.target.value)}
+              placeholder="手改说明（可选）"
+              className="w-full rounded border border-line bg-bg px-3 py-1.5 text-sm text-ink focus:border-cinnabar focus:outline-none"
+            />
+          </div>
+        ) : null}
+      </fieldset>
+    </li>
+  );
+}
--- a/apps/web/components/review/ReviewReport.tsx
+++ b/apps/web/components/review/ReviewReport.tsx
@@ -0,0 +1,291 @@
+"use client";
+
+import { useEffect, useMemo, useRef, useState } from "react";
+
+import { AppShell } from "@/components/AppShell";
+import type { ProjectResponse, ReviewHistoryItem } from "@/lib/api/types";
+import {
+  allResolved,
+  emptyDecisions,
+  setNote,
+  setVerdict,
+  unresolvedIndices,
+  type DecisionDraft,
+  type Verdict,
+} from "@/lib/review/decisions";
+import { normalizeConflicts } from "@/lib/review/history";
+import { useAccept } from "@/lib/review/useAccept";
+import { useReviewStream } from "@/lib/review/useReviewStream";
+import type { ReviewConflict } from "@/lib/review/sse";
+import { AcceptPanel } from "./AcceptPanel";
+import { AnnotatedText } from "./AnnotatedText";
+import { ConflictCard } from "./ConflictCard";
+
+interface ReviewReportProps {
+  project: ProjectResponse;
+  chapterNo: number;
+  initialReview: ReviewHistoryItem | undefined;
+  initialDraft: string;
+}
+
+// 审稿报告页主体（UX §6.4 / §8.3 / §9）。
+// 数据源：进页用历史留痕 conflicts 种入；「重新审稿」用当前终稿跑 SSE 覆盖。
+// 裁决草稿随 conflicts 长度对齐；未决禁验收（gate）。
+export function ReviewReport({
+  project,
+  chapterNo,
+  initialReview,
+  initialDraft,
+}: ReviewReportProps) {
+  const review = useReviewStream();
+  const accept = useAccept();
+
+  const [finalText, setFinalText] = useState(initialDraft);
+  const [drafts, setDrafts] = useState<DecisionDraft[]>(() =>
+    emptyDecisions(normalizeConflicts(initialReview).length),
+  );
+  const [focusedIndex, setFocusedIndex] = useState<number | null>(null);
+  const [missing, setMissing] = useState<Set<number>>(new Set());
+  const seededRef = useRef(false);
+
+  // 进页一次性把历史 conflicts 种入流状态（无需重审即可裁决）。
+  const seededConflicts = useMemo(
+    () => normalizeConflicts(initialReview),
+    [initialReview],
+  );
+  useEffect(() => {
+    if (seededRef.current) return;
+    seededRef.current = true;
+    if (seededConflicts.length > 0) review.seed(seededConflicts);
+  }, [review, seededConflicts]);
+
+  // 当前生效冲突 = 流状态（重审后即时更新，否则种入的历史）。
+  const conflicts: ReviewConflict[] = review.state.conflicts;
+
+  // 重审完成（done 边沿）→ 重置裁决草稿对齐新冲突集（冲突可能整组变化）。
+  const conflictCount = conflicts.length;
+  const wasReviewingRef = useRef(false);
+  useEffect(() => {
+    if (review.state.phase === "reviewing") {
+      wasReviewingRef.current = true;
+      return;
+    }
+    if (review.state.phase === "done" && wasReviewingRef.current) {
+      wasReviewingRef.current = false;
+      setDrafts(emptyDecisions(conflictCount));
+      setMissing(new Set());
+    }
+  }, [review.state.phase, conflictCount]);
+
+  const onReReview = (): void => {
+    setMissing(new Set());
+    void review.start(project.id, chapterNo, finalText);
+  };
+
+  const onVerdict = (index: number, verdict: Verdict): void => {
+    setDrafts((prev) => setVerdict(prev, index, verdict));
+    setMissing((prev) => {
+      if (!prev.has(index)) return prev;
+      const next = new Set(prev);
+      next.delete(index);
+      return next;
+    });
+  };
+  const onNote = (index: number, note: string): void =>
+    setDrafts((prev) => setNote(prev, index, note));
+
+  const jumpToCard = (index: number): void => {
+    setFocusedIndex(index);
+    document
+      .getElementById(`conflict-card-${index}`)
+      ?.scrollIntoView({ behavior: "smooth", block: "center" });
+  };
+  const jumpToAnchor = (index: number): void => {
+    setFocusedIndex(index);
+    document
+      .getElementById(`anchor-${index}`)
+      ?.scrollIntoView({ behavior: "smooth", block: "center" });
+  };
+
+  const onAccept = async (): Promise<void> => {
+    const outcome = await accept.accept(
+      project.id,
+      chapterNo,
+      finalText,
+      drafts,
+    );
+    if (outcome.missingIndices.length > 0) {
+      setMissing(new Set(outcome.missingIndices));
+    }
+  };
+
+  const resolved = allResolved(drafts);
+  const unresolved = unresolvedIndices(drafts).length;
+  const reviewing = review.isReviewing;
+
+  return (
+    <AppShell
+      title={`〈${project.title}〉`}
+      subtitle={`第 ${chapterNo} 章 · 审稿报告`}
+    >
+      <div className="grid h-[calc(100vh-4rem)] grid-cols-1 lg:grid-cols-[1fr_24rem]">
+        {/* 左：终稿正文 + 就地标注 */}
+        <section className="flex min-w-0 flex-col bg-bg">
+          <div className="flex items-center gap-3 border-b border-line bg-panel px-6 py-3">
+            <h1 className="font-serif text-lg text-ink">
+              第 {chapterNo} 章 审稿报告
+            </h1>
+            <span className="font-mono text-xs text-ink-soft">
+              {conflictCount} 冲突
+            </span>
+            <div className="ml-auto">
+              {reviewing ? (
+                <button
+                  type="button"
+                  onClick={review.stop}
+                  className="rounded border border-conflict px-3 py-1.5 text-sm text-conflict"
+                >
+                  停
+                </button>
+              ) : (
+                <button
+                  type="button"
+                  onClick={onReReview}
+                  className="rounded bg-cinnabar px-3 py-1.5 text-sm text-panel hover:opacity-90"
+                >
+                  ✦ 重新审稿
+                </button>
+              )}
+            </div>
+          </div>
+
+          {review.state.error ? (
+            <p className="border-b border-line bg-panel px-6 py-2 text-sm text-conflict">
+              审稿失败（{review.state.error.code}）：
+              {review.state.error.message}
+              {review.state.error.code === "LLM_UNAVAILABLE" ? (
+                <>
+                  {" "}
+                  <a
+                    href="/settings/providers"
+                    className="underline hover:text-cinnabar"
+                  >
+                    去设置提供商
+                  </a>
+                </>
+              ) : null}
+            </p>
+          ) : null}
+
+          <div className="flex-1 overflow-auto px-6 py-6">
+            <AnnotatedText
+              text={finalText}
+              conflicts={conflicts}
+              focusedIndex={focusedIndex}
+              onAnchorClick={jumpToCard}
+            />
+            <details className="mt-4">
+              <summary className="cursor-pointer text-xs text-ink-soft hover:text-cinnabar">
+                展开/编辑终稿（裁决时可改稿 — 摘要从终稿提炼）
+              </summary>
+              <label htmlFor="final-text" className="sr-only">
+                终稿正文
+              </label>
+              <textarea
+                id="final-text"
+                value={finalText}
+                onChange={(e) => setFinalText(e.target.value)}
+                className="mt-2 min-h-[20vh] w-full resize-y rounded border border-line bg-panel p-3 font-serif text-[16px] leading-[1.9] text-ink focus:border-cinnabar focus:outline-none"
+              />
+            </details>
+          </div>
+        </section>
+
+        {/* 右：审稿分区 + 冲突裁决 + 验收 gate */}
+        <aside className="flex flex-col overflow-auto border-l border-line bg-panel px-4 py-4">
+          <section className="mb-4">
+            <h2 className="text-xs font-semibold uppercase tracking-wide text-ink-soft">
+              一致性 (continuity)
+            </h2>
+            <SectionStatusLine
+              reviewing={reviewing}
+              done={review.state.phase === "done"}
+              conflictCount={conflictCount}
+              sections={review.state.sections}
+            />
+          </section>
+
+          <section className="flex-1">
+            {conflicts.length === 0 ? (
+              <p className="rounded border border-dashed border-line p-4 text-xs text-ink-soft">
+                {review.state.phase === "done" || seededConflicts.length === 0
+                  ? "未发现一致性冲突。"
+                  : "进页未带审稿留痕，点「重新审稿」开始。"}
+              </p>
+            ) : (
+              <ul className="space-y-3">
+                {conflicts.map((c, i) => (
+                  <ConflictCard
+                    key={i}
+                    index={i}
+                    conflict={c}
+                    draft={drafts[i] ?? { verdict: null, note: "" }}
+                    missing={missing.has(i)}
+                    onVerdict={onVerdict}
+                    onNote={onNote}
+                    onJump={jumpToAnchor}
+                  />
+                ))}
+              </ul>
+            )}
+          </section>
+
+          <section className="mt-4">
+            <AcceptPanel
+              conflictCount={conflictCount}
+              unresolvedCount={resolved ? 0 : unresolved}
+              accepting={accept.status === "accepting"}
+              result={accept.result}
+              onAccept={() => void onAccept()}
+            />
+          </section>
+        </aside>
+      </div>
+    </AppShell>
+  );
+}
+
+interface SectionStatusLineProps {
+  reviewing: boolean;
+  done: boolean;
+  conflictCount: number;
+  sections: { name: string; status: string }[];
+}
+
+// 四审进行中骨架逐项点亮（UX §9）；M2 仅 continuity 一项。
+function SectionStatusLine({
+  reviewing,
+  done,
+  conflictCount,
+  sections,
+}: SectionStatusLineProps) {
+  if (reviewing) {
+    return (
+      <p className="mt-1 text-xs text-info" aria-live="polite">
+        审稿进行中…
+      </p>
+    );
+  }
+  if (done || sections.length > 0) {
+    return (
+      <p className="mt-1 text-xs">
+        {conflictCount > 0 ? (
+          <span className="text-conflict">⚠ {conflictCount} 冲突</span>
+        ) : (
+          <span className="text-pass">✓ 通过</span>
+        )}
+      </p>
+    );
+  }
+  return null;
+}
--- a/apps/web/lib/review/decisions.test.ts
+++ b/apps/web/lib/review/decisions.test.ts
@@ -0,0 +1,101 @@
+import { describe, expect, it } from "vitest";
+
+import {
+  allResolved,
+  buildAcceptRequest,
+  emptyDecisions,
+  missingConflictIndices,
+  setNote,
+  setVerdict,
+  unresolvedIndices,
+} from "./decisions";
+
+describe("emptyDecisions", () => {
+  it("creates N unresolved drafts", () => {
+    expect(emptyDecisions(2)).toEqual([
+      { verdict: null, note: "" },
+      { verdict: null, note: "" },
+    ]);
+  });
+});
+
+describe("setVerdict / setNote (immutable)", () => {
+  it("sets verdict at index without mutating others", () => {
+    const drafts = emptyDecisions(2);
+    const next = setVerdict(drafts, 1, "ignore");
+    expect(next[1]?.verdict).toBe("ignore");
+    expect(next[0]?.verdict).toBeNull();
+    expect(drafts[1]?.verdict).toBeNull(); // 原数组不变
+  });
+
+  it("sets note at index", () => {
+    const drafts = emptyDecisions(1);
+    const next = setNote(drafts, 0, "手改说明");
+    expect(next[0]?.note).toBe("手改说明");
+    expect(drafts[0]?.note).toBe("");
+  });
+});
+
+describe("allResolved / unresolvedIndices", () => {
+  it("zero conflicts pass through (allResolved true)", () => {
+    expect(allResolved([])).toBe(true);
+    expect(unresolvedIndices([])).toEqual([]);
+  });
+
+  it("requires every conflict to have a verdict", () => {
+    let drafts = emptyDecisions(3);
+    expect(allResolved(drafts)).toBe(false);
+    expect(unresolvedIndices(drafts)).toEqual([0, 1, 2]);
+    drafts = setVerdict(drafts, 0, "accept");
+    drafts = setVerdict(drafts, 2, "manual");
+    expect(allResolved(drafts)).toBe(false);
+    expect(unresolvedIndices(drafts)).toEqual([1]);
+    drafts = setVerdict(drafts, 1, "ignore");
+    expect(allResolved(drafts)).toBe(true);
+    expect(unresolvedIndices(drafts)).toEqual([]);
+  });
+});
+
+describe("buildAcceptRequest", () => {
+  it("includes only resolved decisions and trims notes", () => {
+    let drafts = emptyDecisions(3);
+    drafts = setVerdict(drafts, 0, "accept");
+    drafts = setVerdict(drafts, 2, "manual");
+    drafts = setNote(drafts, 2, "  改成后天淬炼  ");
+    // index 1 仍未决 → 不应进入请求
+    const req = buildAcceptRequest("终稿正文", drafts);
+    expect(req.final_text).toBe("终稿正文");
+    expect(req.decisions).toEqual([
+      { conflict_index: 0, verdict: "accept" },
+      { conflict_index: 2, verdict: "manual", note: "改成后天淬炼" },
+    ]);
+  });
+
+  it("omits empty/whitespace-only notes", () => {
+    let drafts = emptyDecisions(1);
+    drafts = setVerdict(drafts, 0, "ignore");
+    drafts = setNote(drafts, 0, "   ");
+    const req = buildAcceptRequest("t", drafts);
+    expect(req.decisions).toEqual([{ conflict_index: 0, verdict: "ignore" }]);
+  });
+});
+
+describe("missingConflictIndices", () => {
+  it("extracts a set from 409 details", () => {
+    const set = missingConflictIndices({
+      missing_conflict_indices: [1, 3],
+      conflict_count: 4,
+    });
+    expect(set.has(1)).toBe(true);
+    expect(set.has(3)).toBe(true);
+    expect(set.has(0)).toBe(false);
+  });
+
+  it("returns empty set for malformed/missing details", () => {
+    expect(missingConflictIndices(null).size).toBe(0);
+    expect(missingConflictIndices({}).size).toBe(0);
+    expect(missingConflictIndices({ missing_conflict_indices: "x" }).size).toBe(
+      0,
+    );
+  });
+});
--- a/apps/web/lib/review/decisions.ts
+++ b/apps/web/lib/review/decisions.ts
@@ -0,0 +1,74 @@
+// 裁决纯逻辑：完整性判定（未决禁验收）、accept 请求体组装、缺判高亮映射。
+// 对齐 C3 accept 契约 + R5 冲突 gate（裁决 conflict_index 须覆盖 range(len(conflicts))）。
+
+import type { AcceptRequest, ConflictDecision } from "@/lib/api/types";
+
+export type Verdict = "accept" | "ignore" | "manual";
+
+// 单个冲突的本地裁决草稿（按下标定位）。
+export interface DecisionDraft {
+  verdict: Verdict | null;
+  note: string;
+}
+
+// 初始化 N 个冲突的裁决草稿（全部未决）。
+export function emptyDecisions(conflictCount: number): DecisionDraft[] {
+  return Array.from({ length: conflictCount }, () => ({
+    verdict: null,
+    note: "",
+  }));
+}
+
+// 不可变更新：设置某个冲突的 verdict。
+export function setVerdict(
+  drafts: readonly DecisionDraft[],
+  index: number,
+  verdict: Verdict,
+): DecisionDraft[] {
+  return drafts.map((d, i) => (i === index ? { ...d, verdict } : d));
+}
+
+// 不可变更新：设置某个冲突的 note。
+export function setNote(
+  drafts: readonly DecisionDraft[],
+  index: number,
+  note: string,
+): DecisionDraft[] {
+  return drafts.map((d, i) => (i === index ? { ...d, note } : d));
+}
+
+// 是否全部已决：每个冲突都有 verdict（覆盖 range(len(conflicts))）。零冲突 → 直通。
+export function allResolved(drafts: readonly DecisionDraft[]): boolean {
+  return drafts.every((d) => d.verdict !== null);
+}
+
+// 本地仍未决的冲突下标（用于禁用态提示）。
+export function unresolvedIndices(drafts: readonly DecisionDraft[]): number[] {
+  return drafts.flatMap((d, i) => (d.verdict === null ? [i] : []));
+}
+
+// 组装 accept 请求体（仅含已决项；note 去空白后非空才带）。
+export function buildAcceptRequest(
+  finalText: string,
+  drafts: readonly DecisionDraft[],
+): AcceptRequest {
+  const decisions: ConflictDecision[] = drafts.flatMap((d, i) => {
+    if (d.verdict === null) return [];
+    const trimmed = d.note.trim();
+    const decision: ConflictDecision = {
+      conflict_index: i,
+      verdict: d.verdict,
+    };
+    return [trimmed ? { ...decision, note: trimmed } : decision];
+  });
+  return { final_text: finalText, decisions };
+}
+
+// 从 409 CONFLICT_UNRESOLVED 的 details 提取缺判下标集合（用于报告卡高亮）。
+export function missingConflictIndices(details: unknown): Set<number> {
+  if (typeof details !== "object" || details === null) return new Set();
+  const raw = (details as { missing_conflict_indices?: unknown })
+    .missing_conflict_indices;
+  if (!Array.isArray(raw)) return new Set();
+  return new Set(raw.filter((n): n is number => typeof n === "number"));
+}
--- a/apps/web/lib/review/history.test.ts
+++ b/apps/web/lib/review/history.test.ts
@@ -0,0 +1,54 @@
+import { describe, expect, it } from "vitest";
+
+import type { ReviewHistoryItem } from "@/lib/api/types";
+import { latestReview, normalizeConflicts } from "./history";
+
+const item = (
+  conflicts: Record<string, unknown>[],
+): ReviewHistoryItem => ({
+  id: "00000000-0000-0000-0000-000000000001",
+  project_id: "00000000-0000-0000-0000-000000000002",
+  chapter_no: 128,
+  conflicts,
+});
+
+describe("normalizeConflicts", () => {
+  it("tightens loose dicts into ReviewConflict, preserving order", () => {
+    const out = normalizeConflicts(
+      item([
+        {
+          type: "设定违例",
+          where: "第4段",
+          refs: ["第30章"],
+          suggestion: "统一血脉",
+        },
+        { type: "时间线倒错", where: "第8段", refs: [], suggestion: "调整" },
+      ]),
+    );
+    expect(out).toEqual([
+      { type: "设定违例", where: "第4段", refs: ["第30章"], suggestion: "统一血脉" },
+      { type: "时间线倒错", where: "第8段", refs: [], suggestion: "调整" },
+    ]);
+  });
+
+  it("fills safe defaults for missing/wrong-typed fields", () => {
+    const out = normalizeConflicts(item([{ where: 42, refs: "x" }]));
+    expect(out).toEqual([
+      { type: "未分类", where: "", refs: [], suggestion: "" },
+    ]);
+  });
+
+  it("returns [] for undefined item or missing conflicts", () => {
+    expect(normalizeConflicts(undefined)).toEqual([]);
+  });
+});
+
+describe("latestReview", () => {
+  it("returns first item (history is newest-first)", () => {
+    const a = item([]);
+    const b = item([]);
+    expect(latestReview([a, b])).toBe(a);
+    expect(latestReview([])).toBeUndefined();
+    expect(latestReview(undefined)).toBeUndefined();
+  });
+});
--- a/apps/web/lib/review/history.ts
+++ b/apps/web/lib/review/history.ts
@@ -0,0 +1,34 @@
+// 审稿历史归一：把后端 ReviewHistoryItem 的松散 conflicts（dict[]）收紧成 ReviewConflict[]。
+// 纯逻辑（可单测）；schema 把 conflicts 标成 {[k]:unknown}[]，这里安全收窄。
+
+import type { ReviewHistoryItem } from "@/lib/api/types";
+import type { ReviewConflict } from "./sse";
+
+function asString(v: unknown, fallback = ""): string {
+  return typeof v === "string" ? v : fallback;
+}
+
+function asStringArray(v: unknown): string[] {
+  if (!Array.isArray(v)) return [];
+  return v.filter((x): x is string => typeof x === "string");
+}
+
+// 把一条留痕的 conflicts 收紧（缺字段给安全默认；保持顺序=下标身份，对齐冲突 gate）。
+export function normalizeConflicts(
+  item: ReviewHistoryItem | undefined,
+): ReviewConflict[] {
+  const raw = item?.conflicts ?? [];
+  return raw.map((c) => ({
+    type: asString(c["type"], "未分类"),
+    where: asString(c["where"]),
+    refs: asStringArray(c["refs"]),
+    suggestion: asString(c["suggestion"]),
+  }));
+}
+
+// 最近一条留痕（GET .../reviews 已按新→旧排序）。
+export function latestReview(
+  items: readonly ReviewHistoryItem[] | undefined,
+): ReviewHistoryItem | undefined {
+  return items?.[0];
+}
--- a/apps/web/lib/review/sse.test.ts
+++ b/apps/web/lib/review/sse.test.ts
@@ -0,0 +1,130 @@
+import { describe, expect, it } from "vitest";
+
+import {
+  ReviewFrameBuffer,
+  initialReviewState,
+  parseReviewBlock,
+  reduceReview,
+  type ReviewSseEvent,
+} from "./sse";
+
+describe("parseReviewBlock", () => {
+  it("parses a section frame", () => {
+    const evt = parseReviewBlock(
+      'event:section\ndata:{"name":"continuity","status":"done"}',
+    );
+    expect(evt).toEqual({
+      event: "section",
+      data: { name: "continuity", status: "done" },
+    });
+  });
+
+  it("parses a conflict frame", () => {
+    const evt = parseReviewBlock(
+      'event:conflict\ndata:{"type":"设定违例","where":"第4段","refs":["第30章"],"suggestion":"统一血脉设定"}',
+    );
+    expect(evt).toEqual({
+      event: "conflict",
+      data: {
+        type: "设定违例",
+        where: "第4段",
+        refs: ["第30章"],
+        suggestion: "统一血脉设定",
+      },
+    });
+  });
+
+  it("parses done and error frames", () => {
+    expect(parseReviewBlock('event:done\ndata:{"length":1}')).toEqual({
+      event: "done",
+      data: { length: 1 },
+    });
+    expect(
+      parseReviewBlock(
+        'event:error\ndata:{"code":"INTERNAL","message":"boom","request_id":"r1"}',
+      ),
+    ).toEqual({
+      event: "error",
+      data: { code: "INTERNAL", message: "boom", request_id: "r1" },
+    });
+  });
+
+  it("returns null for unknown event or malformed json", () => {
+    expect(parseReviewBlock('event:token\ndata:{"text":"x"}')).toBeNull();
+    expect(parseReviewBlock("event:conflict\ndata:{not json")).toBeNull();
+  });
+});
+
+describe("ReviewFrameBuffer", () => {
+  it("emits complete blocks and buffers the tail", () => {
+    const buf = new ReviewFrameBuffer();
+    const first = buf.push(
+      'event:section\ndata:{"name":"continuity","status":"started"}\n\nevent:conf',
+    );
+    expect(first).toEqual([
+      { event: "section", data: { name: "continuity", status: "started" } },
+    ]);
+    const second = buf.push(
+      'lict\ndata:{"type":"性格漂移","where":"第2段","refs":[],"suggestion":"x"}\n\n',
+    );
+    expect(second).toEqual([
+      {
+        event: "conflict",
+        data: { type: "性格漂移", where: "第2段", refs: [], suggestion: "x" },
+      },
+    ]);
+  });
+});
+
+describe("reduceReview", () => {
+  it("upserts sections by name (last status wins) and marks reviewing", () => {
+    const events: ReviewSseEvent[] = [
+      { event: "section", data: { name: "continuity", status: "started" } },
+      { event: "section", data: { name: "continuity", status: "done" } },
+    ];
+    const state = events.reduce(reduceReview, initialReviewState);
+    expect(state.sections).toEqual([
+      { name: "continuity", status: "done" },
+    ]);
+    expect(state.phase).toBe("reviewing");
+  });
+
+  it("accumulates conflicts in order", () => {
+    const events: ReviewSseEvent[] = [
+      {
+        event: "conflict",
+        data: { type: "设定违例", where: "a", refs: [], suggestion: "s1" },
+      },
+      {
+        event: "conflict",
+        data: { type: "时间线倒错", where: "b", refs: ["第3章"], suggestion: "s2" },
+      },
+    ];
+    const state = events.reduce(reduceReview, initialReviewState);
+    expect(state.conflicts.map((c) => c.type)).toEqual([
+      "设定违例",
+      "时间线倒错",
+    ]);
+  });
+
+  it("marks done and captures error preserving collected data", () => {
+    let s = reduceReview(initialReviewState, {
+      event: "section",
+      data: { name: "continuity", status: "done" },
+    });
+    s = reduceReview(s, { event: "done", data: { length: 1 } });
+    expect(s.phase).toBe("done");
+
+    let e = reduceReview(initialReviewState, {
+      event: "conflict",
+      data: { type: "能力不符", where: "x", refs: [], suggestion: "y" },
+    });
+    e = reduceReview(e, {
+      event: "error",
+      data: { code: "LLM_UNAVAILABLE", message: "no key" },
+    });
+    expect(e.phase).toBe("error");
+    expect(e.conflicts).toHaveLength(1);
+    expect(e.error?.code).toBe("LLM_UNAVAILABLE");
+  });
+});
--- a/apps/web/lib/review/sse.ts
+++ b/apps/web/lib/review/sse.ts
@@ -0,0 +1,155 @@
+// 审稿 SSE 帧归一 + reducer（对齐 C3 / C4 扩 / ARCH §7.3）。
+// 帧：`section{name,status}` / `conflict{type,where,refs,suggestion}` / `done{length}` / `error{...}`。
+// 纯逻辑，便于 node 环境单测（不依赖 DOM）。
+
+// 五类冲突（C6 ConflictType / ARCH §6.1）。
+export type ConflictType =
+  | "性格漂移"
+  | "能力不符"
+  | "设定违例"
+  | "地理矛盾"
+  | "时间线倒错";
+
+export interface ReviewConflict {
+  type: string;
+  where: string;
+  refs: string[];
+  suggestion: string;
+}
+
+export type SectionStatus = "started" | "done" | "incomplete";
+
+export interface SectionEvent {
+  event: "section";
+  data: { name: string; status: SectionStatus };
+}
+export interface ConflictEvent {
+  event: "conflict";
+  data: ReviewConflict;
+}
+export interface DoneEvent {
+  event: "done";
+  data: { length: number };
+}
+export interface ErrorEvent {
+  event: "error";
+  data: { code: string; message: string; request_id?: string | null };
+}
+export type ReviewSseEvent =
+  | SectionEvent
+  | ConflictEvent
+  | DoneEvent
+  | ErrorEvent;
+
+const KNOWN_EVENTS = new Set(["section", "conflict", "done", "error"]);
+
+// 把一个完整 SSE 块（多行）解析成事件；无法解析则返回 null（跳过）。
+export function parseReviewBlock(block: string): ReviewSseEvent | null {
+  let event = "";
+  const dataLines: string[] = [];
+  for (const rawLine of block.split("\n")) {
+    const line = rawLine.replace(/\r$/, "");
+    if (line.startsWith(":")) continue; // 注释/心跳
+    const sep = line.indexOf(":");
+    if (sep === -1) continue;
+    const field = line.slice(0, sep);
+    const value = line.slice(sep + 1).replace(/^ /, "");
+    if (field === "event") event = value;
+    else if (field === "data") dataLines.push(value);
+  }
+  if (!KNOWN_EVENTS.has(event) || dataLines.length === 0) return null;
+  let data: unknown;
+  try {
+    data = JSON.parse(dataLines.join("\n"));
+  } catch {
+    return null;
+  }
+  return { event, data } as ReviewSseEvent;
+}
+
+// 增量缓冲：吃进一段文本，吐出已完成的事件块（空行分隔），保留未完成尾部。
+export class ReviewFrameBuffer {
+  private buf = "";
+
+  push(chunk: string): ReviewSseEvent[] {
+    this.buf += chunk;
+    const events: ReviewSseEvent[] = [];
+    let idx: number;
+    while ((idx = this.findBoundary(this.buf)) !== -1) {
+      const block = this.buf.slice(0, idx);
+      this.buf = this.buf.slice(this.boundaryEnd(this.buf, idx));
+      const evt = parseReviewBlock(block);
+      if (evt) events.push(evt);
+    }
+    return events;
+  }
+
+  private findBoundary(s: string): number {
+    const a = s.indexOf("\n\n");
+    const b = s.indexOf("\r\n\r\n");
+    if (a === -1) return b;
+    if (b === -1) return a;
+    return Math.min(a, b);
+  }
+
+  private boundaryEnd(s: string, idx: number): number {
+    return s.startsWith("\r\n\r\n", idx) ? idx + 4 : idx + 2;
+  }
+}
+
+export type ReviewPhase = "idle" | "reviewing" | "done" | "error" | "aborted";
+
+export interface ReviewSection {
+  name: string;
+  status: SectionStatus;
+}
+
+export interface ReviewStreamState {
+  phase: ReviewPhase;
+  sections: ReviewSection[];
+  conflicts: ReviewConflict[];
+  error: { code: string; message: string; request_id?: string | null } | null;
+}
+
+export const initialReviewState: ReviewStreamState = {
+  phase: "idle",
+  sections: [],
+  conflicts: [],
+  error: null,
+};
+
+// 纯 reducer：把单个事件折叠进状态。section 按 name upsert（最后状态生效）。
+export function reduceReview(
+  state: ReviewStreamState,
+  event: ReviewSseEvent,
+): ReviewStreamState {
+  switch (event.event) {
+    case "section":
+      return {
+        ...state,
+        phase: "reviewing",
+        sections: upsertSection(state.sections, event.data),
+      };
+    case "conflict":
+      return {
+        ...state,
+        phase: "reviewing",
+        conflicts: [...state.conflicts, event.data],
+      };
+    case "done":
+      return { ...state, phase: "done" };
+    case "error":
+      return { ...state, phase: "error", error: event.data };
+    default:
+      return state;
+  }
+}
+
+function upsertSection(
+  sections: ReviewSection[],
+  next: ReviewSection,
+): ReviewSection[] {
+  const idx = sections.findIndex((s) => s.name === next.name);
+  if (idx === -1) return [...sections, next];
+  return sections.map((s, i) => (i === idx ? next : s));
+}
--- a/apps/web/lib/review/useAccept.ts
+++ b/apps/web/lib/review/useAccept.ts
@@ -0,0 +1,76 @@
+"use client";
+
+import { useCallback, useState } from "react";
+
+import { api } from "@/lib/api/client";
+import { useToast } from "@/components/Toast";
+import type { AcceptResponse } from "@/lib/api/types";
+import { buildAcceptRequest, type DecisionDraft } from "./decisions";
+
+export type AcceptStatus = "idle" | "accepting" | "accepted" | "error";
+
+export interface AcceptOutcome {
+  result: AcceptResponse | null;
+  // 409 CONFLICT_UNRESOLVED 缺判下标（高亮报告卡）。
+  missingIndices: number[];
+}
+
+export interface UseAccept {
+  status: AcceptStatus;
+  result: AcceptResponse | null;
+  accept: (
+    projectId: string,
+    chapterNo: number,
+    finalText: string,
+    drafts: readonly DecisionDraft[],
+  ) => Promise<AcceptOutcome>;
+}
+
+interface ApiErrorEnvelope {
+  error?: {
+    code?: string;
+    message?: string;
+    details?: { missing_conflict_indices?: number[] } | null;
+  };
+}
+
+// 验收：乐观置 accepting → 成功置 accepted（呈现「本次将更新」清单）；
+// 失败回滚状态 + toast；409 CONFLICT_UNRESOLVED 解析缺判下标供高亮。
+export function useAccept(): UseAccept {
+  const [status, setStatus] = useState<AcceptStatus>("idle");
+  const [result, setResult] = useState<AcceptResponse | null>(null);
+  const toast = useToast();
+
+  const accept = useCallback<UseAccept["accept"]>(
+    async (projectId, chapterNo, finalText, drafts) => {
+      setStatus("accepting");
+      const body = buildAcceptRequest(finalText, drafts);
+      const { data, error } = await api.POST(
+        "/projects/{project_id}/chapters/{chapter_no}/accept",
+        {
+          params: { path: { project_id: projectId, chapter_no: chapterNo } },
+          body,
+        },
+      );
+      if (error || !data) {
+        setStatus("error");
+        const env = error as ApiErrorEnvelope | undefined;
+        const code = env?.error?.code;
+        const missing = env?.error?.details?.missing_conflict_indices ?? [];
+        if (code === "CONFLICT_UNRESOLVED") {
+          toast("尚有冲突未裁决，请先处理高亮项", "error");
+          return { result: null, missingIndices: missing };
+        }
+        toast("验收失败，请重试（正文未丢失）", "error");
+        return { result: null, missingIndices: [] };
+      }
+      setResult(data);
+      setStatus("accepted");
+      toast("本章已验收", "success");
+      return { result: data, missingIndices: [] };
+    },
+    [toast],
+  );
+
+  return { status, result, accept };
+}
--- a/apps/web/lib/review/useReviewStream.ts
+++ b/apps/web/lib/review/useReviewStream.ts
@@ -0,0 +1,135 @@
+"use client";
+
+import { useCallback, useReducer, useRef } from "react";
+
+import { API_BASE_PUBLIC } from "@/lib/api/config";
+import {
+  ReviewFrameBuffer,
+  initialReviewState,
+  reduceReview,
+  type ReviewConflict,
+  type ReviewStreamState,
+} from "./sse";
+
+type Action =
+  | { type: "start" }
+  | { type: "events"; events: ReturnType<ReviewFrameBuffer["push"]> }
+  | { type: "abort" }
+  | { type: "fail"; code: string; message: string }
+  | { type: "seed"; conflicts: ReviewConflict[] };
+
+function reducer(state: ReviewStreamState, action: Action): ReviewStreamState {
+  switch (action.type) {
+    case "start":
+      return { ...initialReviewState, phase: "reviewing" };
+    case "events":
+      return action.events.reduce(reduceReview, state);
+    case "abort":
+      return { ...state, phase: "aborted" };
+    case "fail":
+      return {
+        ...state,
+        phase: "error",
+        error: { code: action.code, message: action.message },
+      };
+    case "seed":
+      return { ...initialReviewState, conflicts: action.conflicts };
+    default:
+      return state;
+  }
+}
+
+export interface UseReviewStream {
+  state: ReviewStreamState;
+  isReviewing: boolean;
+  // 用当前编辑器草稿重新审稿。
+  start: (projectId: string, chapterNo: number, draft: string) => Promise<void>;
+  stop: () => void;
+  // 进页用历史留痕的冲突种入（无需重审即可裁决）。
+  seed: (conflicts: ReviewConflict[]) => void;
+}
+
+// 消费 POST .../review 的 SSE 流：fetch+ReadableStream（EventSource 不支持 POST）。
+// "停" = abort（已收 section/conflict 留在 state，裁决草稿不丢）。
+// 流前 503 LLM_UNAVAILABLE 是 JSON 信封（非帧）→ 经 !res.ok 检出。
+export function useReviewStream(): UseReviewStream {
+  const [state, dispatch] = useReducer(reducer, initialReviewState);
+  const controllerRef = useRef<AbortController | null>(null);
+
+  const stop = useCallback(() => {
+    controllerRef.current?.abort();
+    controllerRef.current = null;
+    dispatch({ type: "abort" });
+  }, []);
+
+  const seed = useCallback((conflicts: ReviewConflict[]) => {
+    dispatch({ type: "seed", conflicts });
+  }, []);
+
+  const start = useCallback(
+    async (
+      projectId: string,
+      chapterNo: number,
+      draft: string,
+    ): Promise<void> => {
+      const controller = new AbortController();
+      controllerRef.current = controller;
+      dispatch({ type: "start" });
+      try {
+        const res = await fetch(
+          `${API_BASE_PUBLIC}/projects/${projectId}/chapters/${chapterNo}/review`,
+          {
+            method: "POST",
+            headers: {
+              Accept: "text/event-stream",
+              "Content-Type": "application/json",
+            },
+            body: JSON.stringify({ draft }),
+            signal: controller.signal,
+          },
+        );
+        if (!res.ok || !res.body) {
+          let code = "REVIEW_FAILED";
+          let message = `审稿请求失败（${res.status}）`;
+          try {
+            const body = (await res.json()) as {
+              error?: { code?: string; message?: string };
+            };
+            if (body.error?.code) code = body.error.code;
+            if (body.error?.message) message = body.error.message;
+          } catch {
+            // 非 JSON 信封，沿用默认文案。
+          }
+          dispatch({ type: "fail", code, message });
+          return;
+        }
+        const reader = res.body.getReader();
+        const decoder = new TextDecoder();
+        const buffer = new ReviewFrameBuffer();
+        for (;;) {
+          const { value, done } = await reader.read();
+          if (done) break;
+          const events = buffer.push(decoder.decode(value, { stream: true }));
+          if (events.length > 0) dispatch({ type: "events", events });
+        }
+      } catch (err: unknown) {
+        if (err instanceof DOMException && err.name === "AbortError") {
+          return; // 用户主动停止：state 已置 aborted。
+        }
+        const message = err instanceof Error ? err.message : "未知网络错误";
+        dispatch({ type: "fail", code: "NETWORK", message });
+      } finally {
+        controllerRef.current = null;
+      }
+    },
+    [],
+  );
+
+  return {
+    state,
+    isReviewing: state.phase === "reviewing",
+    start,
+    stop,
+    seed,
+  };
+}
--- a/memory/contracts.md
+++ b/memory/contracts.md
@@ -0,0 +1,98 @@
+# 契约登记（解耦缝）
+
+> 跨 agent 的契约——多 agent 靠它解耦并行。**契约先行**：定义方先在此登记并标 `稳定`，依赖方才动工；改契约必须在此记一笔 + 在 `PROGRESS.md` 通知依赖任务（前端要重生成 TS 客户端、依赖模块要重同步）。
+> 状态：`待定义` → `草拟(@skill)` → `稳定` → `已变更(见日志)`。
+
+---
+
+## C1 · LLM 网关接口　owner @llm　状态: 稳定（T1.1, 2026-06-18）
+- 来源：`ARCHITECTURE.md §4.1`（`LlmRequest` / `LlmResponse` / `Block` / `Usage`，**snake_case**）。
+- 消费方：编排器、所有 Agent（经 `Gateway.run` / `Gateway.stream`）。
+- 关键不变量：agent 只传 `tier`（writer/analyst/light），不传具体 model。
+- **已实现（`packages/llm_gateway/ww_llm_gateway`）**：
+  - 类型 `types.py`：`Block(text,cache=False)`、`Scope(user_id,project_id?)`、`LlmRequest(tier,input:str|list[Block],system:list[Block],stream,output_schema?,thinking,max_tokens?,scope)`、`Usage(provider,model,input_tokens,output_tokens,cache_read_tokens,cost_minor,currency)`、`ServedBy(provider,model,fell_back)`、`LlmResponse(text,parsed?,usage,served_by)`、`Delta(text)`、`Tier`。
+  - `Gateway(adapters:dict[str,ProviderAdapter], ledger:LedgerSink, resolver=resolve_route)`：`async run(req)->LlmResponse`、`stream(req)->AsyncIterator[Delta]`。每次调用落 **1 条** `usage_ledger`（经 `LedgerSink`，可注入内存替身）。
+  - 适配器 `ProviderAdapter`(Protocol)：`provider`、`capabilities()->Capabilities`、`async complete(req,model)->ProviderResult`、`stream(req,model)->AsyncIterator[StreamChunk]`。M1 实现 `OpenAICompatAdapter(provider, client:AsyncOpenAI)`（DeepSeek，注入 client 便于测试）。
+  - 档位路由 `resolve_route(tier)->Route(provider,model)` 读 `config.tier_defaults`（M1 仅全局默认；回退/熔断属 M5/T5.4，**未实现**）。
+  - 记账 `SqlAlchemyLedgerSink(session)` 写 `UsageLedger`（owner_id=scope.user_id 单用户 stub；列名 `cache_read`）。成本表 `pricing.py`（未知 provider/model→0）。
+
+## C2 · DB schema（SQLAlchemy 模型）　owner @db　状态: 待定义
+- 来源：`ARCHITECTURE.md §3.1` DDL（11 创作表 + chapter_reviews + 运营表；无向量列；users stub）。
+- 消费方：`@backend`(Repository/记忆服务/验收)、`@llm`(Agent reads/writes)。
+
+## C3 · API / OpenAPI 端点　owner @backend　状态: 稳定（M1 端点全落：T1.7 settings + T1.4 projects/chapters, 2026-06-18）
+- 来源：`ARCHITECTURE.md §7.2` 端点清单（章节端点统一 `/projects/:id/chapters/:no/...`；含 `PUT .../draft`(自动保存)、`/refine`、`/jobs/:id`、`/reviews`）。
+- 消费方：`@frontend`（经 OpenAPI→TS 客户端）。**改端点/字段 → 前端必须 `pnpm gen:api` 重生成客户端。**
+- **已落（T1.7, 2026-06-18，snake_case，响应仅脱敏 key）**：
+  - `GET /settings/providers` → `ProvidersResponse{ providers:[ProviderView{provider, masked_key}], tier_routing:[TierRoutingView{tier, provider, model, fallback:list[str]}] }`
+  - `PUT /settings/providers` ← `ProvidersUpsertRequest{ credentials:[ProviderCredentialInput{provider, api_key}], tier_routing:[TierRoutingInput{tier, provider, model, fallback}] }` → `ProvidersResponse`(脱敏)
+  - `POST /settings/providers/test` ← `TestConnectionRequest{provider}` → `TestConnectionResponse{provider, ok, capabilities:CapabilitiesView{structured_output, prefix_cache, thinking}}`
+  - **明文 key 永不过边界**；probe 经可注入 `ProviderProbe`（测试用 fake，不联网）。
+- **已落（T1.4, 2026-06-18，snake_case）**：
+  - `POST /projects` ← `ProjectCreateRequest{title, genre?, logline?, premise?, theme?, selling_points:list, structure?}` → 201 `ProjectResponse{id, title, genre?, logline?, premise?, theme?, selling_points, structure?}`
+  - `GET /projects` → `ProjectListResponse{projects:[ProjectResponse]}`；`GET /projects/{id}` → `ProjectResponse`（404 `NOT_FOUND` 信封）
+  - `POST /projects/{id}/chapters/{no}/draft` → **SSE** `text/event-stream`，帧 `event:<token|done|error>\ndata:<json>\n\n`（`token{text}`/`done{length}`/`error{code,message,request_id}`）；无凭据 → 流前 `LLM_UNAVAILABLE`(503) JSON 信封（非帧）。
+  - `PUT /projects/{id}/chapters/{no}/draft` ← `DraftSaveRequest{text}` → 200 `DraftResponse{project_id, chapter_no, volume, status, version, length}`（幂等：version 固定 1、status='draft'）。
+  - 网关注入缝 `get_writer_gateway`（从凭据构 `OpenAICompatAdapter`+`SqlAlchemyLedgerSink`）；测试经 `app.dependency_overrides` 注 mock 网关（只需 `.stream(req)`）。
+- **@frontend 行动**：M1 端点已全在 OpenAPI → Wave D 前先 `cd apps/web && pnpm gen:api` 重生成 `lib/api/schema.d.ts`。
+- **已落（T2.4+T2.5, 2026-06-18，snake_case，全部挂 `projects.router`、已在 OpenAPI）— M2 审/裁/验收三端点**：
+  - `POST /projects/{id}/chapters/{no}/review` ← `ReviewRequest{draft?}`（空/缺→回退已存草稿；无草稿→404 `NOT_FOUND`）→ **SSE** `text/event-stream`，帧：`section{name,status:"done"|"incomplete"}`(每审一条，M2 仅 `continuity`) / `conflict{type,where,refs:list,suggestion}`(每冲突一条，形=C6 `Conflict` 五类) / `done{length=审项数}` / `error{code,message,request_id}`。无凭据→流前 `LLM_UNAVAILABLE`(503 JSON 信封)。续审网关 tier=analyst（`get_review_gateway`）。**端点流耗尽后 `session.commit()`**（网关 ledger + collect 均只 flush）。
+  - `GET /projects/{id}/chapters/{no}/reviews` → `ReviewHistoryResponse{reviews:[ReviewHistoryItem{id,project_id,chapter_no,chapter_version?,conflicts:list,foreshadow_sug:list,style?,pace?,health_score?,decisions?}]}`（新→旧）。
+  - `POST /projects/{id}/chapters/{no}/accept` ← `AcceptRequest{final_text(min1), decisions:[ConflictDecision{conflict_index:int>=0, verdict:"accept"|"ignore"|"manual", note?}]}` → `AcceptResponse{project_id,chapter_no,accepted_version:int,digest_added:bool,decisions_recorded:int,review_id?:uuid}`。**冲突 gate**：裁决的 `conflict_index` 集合须覆盖 `range(len(最近一条 review.conflicts))`，缺判→409 `CONFLICT_UNRESOLVED` + `details.missing_conflict_indices`/`conflict_count`；无留痕或零冲突→直通。digest 提炼 tier=light（`get_digest_gateway`）在事务外（R2），单事务 promote(R4)+digest.append(#4)+set_decisions 末尾一次 commit（R3）。
+  - 注入缝：`build_gateway_for_tier(session, store, tier)`(原 `build_writer_gateway` 退化为 writer 特例) + `get_review_gateway`/`get_digest_gateway`/`get_review_repo`/`get_digest_append_repo`；测试经 `app.dependency_overrides` 注 mock。
+  - **@frontend 行动**：`cd apps/web && pnpm gen:api` 重生成客户端含此三端点（T2.6）。
+
+## C4 · 编排器接口（LangGraph 写章图）　owner @llm　状态: 稳定（M1/T1.3, 2026-06-18；M2 扩四审/验收）
+- 来源：`ARCHITECTURE.md §5.2`（图）/ §7.3（SSE）。**M1 仅单 `write` 节点**；并行四审/collect/interrupt(accept) 属 M2。
+- 位置：`packages/core/ww_core/orchestrator/`。
+- 图状态 `ChapterState`(TypedDict, snake_case)：`{project_id:UUID, chapter_no:int, user_id:UUID, stable_core:str, volatile:str, draft:str}`——仅控制流+组装上下文+累积草稿（不变量#5）；resume 从领域表重读。
+- 节点缝：
+  - `build_write_request(*, stable_core, volatile, user_id, project_id) -> LlmRequest`（纯函数；`tier="writer"`，`system=[Block(stable_core,cache=True)]`，`input=volatile`，`stream=True`，`scope=Scope(user_id,project_id)`）。
+  - `async stream_chapter_draft(gateway, *, stable_core, volatile, user_id, project_id) -> AsyncIterator[Delta]`——**T1.4 拿来喂 `normalize_deltas` 的底层流缝**。
+  - `async write_node(state, *, gateway) -> {"draft":str}`——可直接单测（注入 mock 网关）。`GatewayStream` Protocol = 节点对网关最小依赖（只需 `.stream(req)`）。
+- **SSE 归一缝（T1.4 消费）**：`async normalize_deltas(deltas, *, request_id=None) -> AsyncIterator[SseEvent]`；`SseEvent{event:str, data:dict}`；事件 `token{text}`/`done{length}`/`error{code,message,request_id}`（ARCH §7.3 子集，M2 加 section/conflict）。底层异常→发 `error` 事件后收尾（不上抛）；`AppError.code` 透传，未知→`INTERNAL`。HTTP event-stream 编码归 T1.4。
+- 图工厂：`build_write_graph(gateway, *, checkpointer=None) -> CompiledStateGraph`（START→write→END）；单测传 `MemorySaver`。
+- checkpointer setup 入口：`async setup_checkpointer(conn_string) -> None`——**只在 migrations/CI 调**（内部 `AsyncPostgresSaver.from_conn_string` 跑一次 `setup()` DDL；懒 import，绝不在 app-runtime 跑）。
+- 不变量：agent 只传 tier；DB 唯一 agent 间通道；不可变更新；瞬时重试在网关不在节点。
+
+### C4 扩展（T2.2, 2026-06-18）· 审稿子图 + review SSE
+- 图工厂 `build_review_graph(gateway, review_repo, *, review_specs=(continuity_spec,), checkpointer=None) -> CompiledStateGraph`：`START →`各 review spec 并行节点`→ collect → END`。M2 默认仅 continuity，`review_specs` 可扩（M3/M4 加 foreshadow/style/pace）。**`build_write_graph` 保留不动**（draft 端点仍用它）。
+- `ChapterState`(state.py) 新增 `review_context:str`、`reviews:Annotated[dict, merge_reviews]`（并行分支浅合并 reducer，返回新 dict）；TypedDict 改 `total=False`（按节点逐步填充）；仍仅控制流+组装上下文+产物句柄（不变量#5）。
+- 节点缝：`run_review(spec, state, *, gateway)->{"reviews":{spec.name:{status,result}}}`（裸函数可单测）；`make_review_node(spec, gateway)`（绑 gateway 的公共缝，供 T2.5 跑单审）；审稿用 `gateway.run()`（非 stream），**只读不写库**（不变量#3）；任一审网关失败被隔离为 `{status:"incomplete",result:None}`（§5.2），不上抛、不毁图。`GatewayRun` Protocol=节点对网关最小依赖（`.run(req)->LlmResponse`）。
+- collect 缝：`collect_reviews(state, *, review_repo)->{}`：抽 continuity 冲突 → `review_repo.record(project_id, chapter_no, chapter_version=None, conflicts=[...])` 落 `chapter_reviews` 留痕；**只 flush 不 commit**（提交归端点/T2.4 事务）。`ReviewRecorder` Protocol 形对齐 `domain.review_repo.ReviewRepo.record`。
+- SSE 新增事件：`section{name,status}`（status ∈ started/done/incomplete）、`conflict{type,where,refs,suggestion}`（对齐 C6 `Conflict`）；新归一缝 `normalize_review(reviews, *, request_id=None)->AsyncIterator[SseEvent]`（每审一条 section + 每冲突一条 conflict + `done{length=审项数}`；异常→`error` 不上抛，同 `normalize_deltas` 纪律）。HTTP event-stream 编码归 T2.5。
+- **accept 不在本图**：`interrupt_before=["accept"]`/accept 节点属 T2.4（确定性事务代码，从领域表重读，R3/不变量#5）。
+- 消费方行动：T2.5 跑 review 子图 + `normalize_review` + 端点**流耗尽后 `await session.commit()`**（网关 ledger + collect 均只 flush，不提交则记账/留痕静默丢失，同 M1 draft 坑）；`GET .../reviews` 用 `review_repo.list_for_chapter`(新→旧)。T2.4 从 `review_repo.list_for_chapter` 读 collect 落的行（`decisions=None`）裁决。
+
+## C5 · 记忆服务 `assemble` / `select_relevant_entities`　owner @backend　状态: 稳定（T1.2, 2026-06-18）
+- 来源：`ARCHITECTURE.md §3.4 / §5.3`（确定性选择：显式+主角+近况；渲染卡片；缓存断点）。
+- 位置：`packages/core/ww_core/memory/`（+ `domain/repositories.py`）。
+- 输出（决策：中性文本，非 `LlmRequest`，见 decisions 2026-06-18）：
+  - `AssembledContext{ stable_core:str, volatile:str, selection:SelectionTrace }`
+    - `stable_core`：断点前（世界硬规则+定型主角(无 latest_state)+文风指纹+合并规则），已排序/无时间戳/无 UUID。
+    - `volatile`：断点后（注入卡片(含 latest_state)+伏笔窗口+近况摘要+本章 beats）。
+  - `SelectionTrace{ selected:list[SelectedEntity] }`；`SelectedEntity{ kind:"character"|"world_entity", name:str, reasons:list[SelectionReason] }`；`SelectionReason="explicit_beat"|"main_character"|"recent_digest"|"foreshadow_window"`。
+- 入口：`async assemble(repos:MemoryRepos, project_id, chapter_no, recent_k=5)->AssembledContext`；纯函数 `select_relevant_entities(*, outline, characters, world_entities, recent_digests)->SelectionTrace`；`render_cards(selection, characters, world_entities)->str`；`merge_rules(rules)->list[RuleView]`（global→genre→style→project）。
+- 依赖注入：`MemoryRepos` 捆绑 7 个 Protocol（Outline/Character/WorldEntity/Digest/Foreshadow/Style/Rules）；单测注入内存 fake，运行时 `sql_memory_repos(AsyncSession)`（**T1.4 注入点**）。
+- 不变量：确定性选择(无向量 #6)；统一 project_id 过滤(§3.5)；latest_state 严格归 volatile(#9)。
+- 消费方：**T1.3 write 节点** → 构造 `LlmRequest(system=[Block(stable_core, cache=True)], input=volatile)`。
+
+## C6 · Agent 声明（AgentSpec）+ 续审 I/O schema　owner @llm　状态: 稳定（T2.1, 2026-06-18）
+- 来源：`ARCHITECTURE.md §5.1 / §5.4 / §6.1`。位置：`packages/agents/ww_agents/`（`specs.py` / `schemas.py`，经 `ww_agents` 导出）。
+- **`AgentSpec`**（frozen Pydantic，不可变）：`name:str`、`tier:Tier`(writer/analyst/light，复用 `ww_llm_gateway.types.Tier`——只声明档位不写 model，不变量#2)、`system_prompt:str`、`input_schema:type[BaseModel]|None`、`output_schema:type[BaseModel]|None`(writer 为 None=纯文本)、`reads:list[str]`、`writes:list[str]`、`genre:str|None=None`、`scope:str="builtin"`。
+- **`continuity_spec`**：`tier="analyst"`、`reads=["chapter_digests","characters","world_entities"]`、`writes=[]`(只读，不变量#3)、`input_schema=None`(注入材料为序列化文本)、`output_schema=ContinuityReview`。
+- **`ContinuityReview{ conflicts: list[Conflict] }`**（仅冲突；digest 不在审稿期产，不变量#4）。
+- **`Conflict{ type: ConflictType, where:str, refs:list[str]=[], suggestion:str }`**；`ConflictType = Literal["性格漂移","能力不符","设定违例","地理矛盾","时间线倒错"]`（ARCH §6.1 五类）。
+- 续审节点调法：`req = LlmRequest(tier="analyst", system=[Block(system_prompt, cache=True)], input=审稿上下文文本, output_schema=ContinuityReview, scope=...)` → `resp = await gateway.run(req)` → `resp.parsed` 为 `ContinuityReview` 实例（带 schema 时必非 None）。续审用 `run()` 非 `stream()`；只读+产冲突，不写库（写在 T2.4 验收事务）。
+- 消费方：编排器(T2.2 续审/collect 节点)、技能运行时(M5)、前端审稿页(经 C3)。foreshadow/style/pace 三审 spec 待 M3/M4 补入本契约。
+
+## C7 · 前端 ↔ 后端类型契约　owner @backend(产出 OpenAPI) / @frontend(生成)　状态: 待定义
+- 机制：FastAPI OpenAPI → `apps/web/lib/api` TS 类型（openapi-typescript/orval）。
+- 规则：后端 schema 任何变更 → 跑 `gen:api` 重生成；不手写共享类型。
+
+---
+
+## 契约变更日志（append-only）
+> 格式：`- [date] @skill 改 Cx：<改了什么> → 影响 <依赖方/任务>`
+
+- [2026-06-18] @llm 改 C1：`Gateway.run()` 现消费 `LlmRequest.output_schema`——`OpenAICompatAdapter.complete` 在 schema 非空时经 **instructor**(`create_with_completion(response_model=...)`) 取已校验 Pydantic 实例并填 `LlmResponse.parsed`；无 schema 时 `parsed is None`、纯文本路径不变；记账仍 **1 条 usage_ledger**/调用（usage 从 raw completion 提取）。`ProviderResult` 新增 `parsed` 字段。结构化路径经可注入 `StructuredClient` Protocol 注 fake（测试不联网）。→ 影响 T2.2（续审节点可直接 `gateway.run(req).parsed`）、未来所有结构化输出 Agent。
--- a/memory/decisions.md
+++ b/memory/decisions.md
@@ -0,0 +1,49 @@
+# 实现决策记录（append-only）
+
+> 实现期做出、而规格未覆盖的决策 + 理由。一条一决策，最新在最上。
+> 与规格冲突的不要写这里——去改规格（见 CLAUDE.md「Conventions」）。重大架构选择见 `ARCHITECTURE.md §1.2 ADR`。
+
+格式：
+```
+## [YYYY-MM-DD] <决策标题> — @skill
+- 背景：为什么要决策
+- 选择：选了什么
+- 理由 / 取舍：
+- 影响：动到哪些契约/模块/任务
+```
+
+---
+
+## [2026-06-18] 网关结构化输出经可注入 `StructuredClient` 缝（instructor）— @llm
+- 背景：`OpenAICompatAdapter` 需接 instructor 产结构化输出（C1 类型预留 `output_schema`/`parsed` 但 M1 未接线），但测试绝不可联网/碰真实 LLM。
+- 选择：定义 `StructuredClient` Protocol（`create_with_completion(*, messages, response_model, **kw) -> (parsed, raw)`，即 `instructor.AsyncInstructor` 的形）；adapter 构造可选注入 `structured_client`，未注入时懒构建 `instructor.from_openai(self._client)`。`run()` 透传 `result.parsed → LlmResponse.parsed`。
+- 理由 / 取舍：保留既有「注入 client 便于测试」风格，结构化路径同样可注 fake。`ProviderResult.text` 对结构化路径置为 `parsed.model_dump_json()`（便于日志/留痕），程序消费走 `parsed`。
+- 影响：契约 C1（`run()` 填 `parsed`；见 contracts 变更日志）、`ProviderResult` 加 `parsed` 字段；T2.2 续审节点据此消费。
+
+## [2026-06-18] 审稿页终稿来源：页内可编辑 textarea（无 GET draft 端点）— @frontend (T2.6)
+- 背景：审稿/验收都需「终稿」文本，但当前无 `GET .../draft` 端点拉取已存草稿。
+- 选择：审稿页用可折叠 textarea 编辑终稿（`initialDraft=''`），重审传它为 `{draft}`（空→后端回退已存草稿），验收 `final_text`=它。
+- 理由 / 取舍：对齐不变量#4（摘要从作者裁决/改稿后的终稿提炼）；作者可在审稿页改稿。代价：刷新页不自动回填草稿正文（M2 可接受，后续可加 GET draft）。
+- 影响：仅前端；T2.7 E2E 用 `#final-text` 注入终稿。
+
+## [2026-06-18] 验收事务边界：digest 提炼在事务外、单事务三写一次提交 — @backend (T2.4)
+- 背景：§5.5 要求验收「单事务」含「从终稿提炼 digest（LLM 调用）」，但不能在持开 DB 事务里跨网络调 LLM（占锁）。
+- 选择：digest 提炼 `extract_digest_facts`(tier=light，`ChapterDigestFacts` schema，经网关 `run().parsed`) 在 `run_accept_transaction` **之前**调用（R2），结果作 `digest_facts:dict` 传入；事务内只三次纯 DB 写（`promote_to_accepted`→`digest.append`→`set_decisions`）+ 末尾一次 `session.commit()`，任一步失败整体回滚。
+- 理由 / 取舍：兼顾「digest 从终稿（不变量#4）」与「事务不跨网络」；提炼那次网关调用的 usage 随事务提交落 1 条 usage_ledger。digest 用 light、续审用 analyst 档位，统一经新 `build_gateway_for_tier(session, store, tier)`（`build_writer_gateway` 退化为 writer 特例）。§5.5 步骤 3（人物 latest_state/伏笔更新）留 `TODO(M3)` 占位，不引入 M3 表逻辑。
+- 影响：契约 C3（accept/review/reviews 三端点）；T2.6 消费 `AcceptResponse`/`CONFLICT_UNRESOLVED`；T2.7 E2E 验证事务原子性+digest 来源+ledger。
+
+## [2026-06-18] 验收-side 写侧 Repository 命名与提交边界 — @backend (T2.3)
+- 背景：`chapter_digests` 已有读侧 repo（`memory/` 的 `DigestRepo.recent`，供 assemble）；M2 需写侧 append。同名易混。
+- 选择：写侧命名 `DigestAppendRepo`/`SqlDigestAppendRepo`，落 `domain/digest_repo.py`，**共用 `DigestView`**；读侧仍在 `memory/`。新增 `review_repo.py`(`record`/`list_for_chapter` 新→旧/`set_decisions`) 与 `chapter_repo` 扩 `max_version`/`promote_to_accepted`/`latest_accepted`。
+- 理由 / 取舍：读写分离避免同名歧义；写侧三 repo 的写方法**只 `flush()` 不 `commit()`**，提交归 T2.4 验收事务单次完成（对齐「写库副作用在编排/事务层」不变量）；`save_draft` 仍自 commit（M1 自动保存语义）。
+- 影响：T2.4 在单事务里组合 `promote_to_accepted`→`digest.append`→`review.set_decisions` 后 `commit()`；R2/R3/R4/R5 决策落在这些接口点。
+- 背景：ARCH §5.3 伪码里 `assemble` 直接返回 `LlmRequest`，会让 `packages/core/memory` 反向依赖 `packages/llm_gateway` 的类型，且使 M1 的 T1.2 强依赖 T1.1（无法并行）。
+- 选择：`assemble(project_id, chapter_no) -> AssembledContext(stable_core: str, volatile: str, selection: SelectionTrace)`。稳定内核/易变各为**已确定性排序、无时间戳/UUID 的字符串**；write 节点(T1.3)再据此构造 `LlmRequest(system=[Block(text=stable_core, cache=True)], input=volatile)`。`SelectionTrace` 记录每个实体的入选理由，供 UX 注入透明面板(T1.6)。
+- 理由 / 取舍：记忆服务只经 DB 通信、不应知道网关请求类型（对齐不变量①②）；解耦后 T1.1‖T1.2 可并行。§5.3 伪码视为示意，真正的缝是「确定性选择 → 序列化的 stable/volatile 文本」。
+- 影响：契约 C5 输出形 = `AssembledContext`（非 `LlmRequest`）；C1 的 `Block`/`LlmRequest` 仅 gateway+orchestrator 使用。回写 ARCH §5.3 待 M1 落地后由 @docs 注一句。
+
+## [2026-06-18] CLAUDE.md 不复制 spec 的枚举值，只重述跨文档规则 — @all
+- 背景：CLAUDE.md 原先内联了 SSE 事件名、LLM 调用日志字段、错误码/envelope 形状等"会变的具体值"，ARCHITECTURE 一改即静默过期，使 CLAUDE.md 自身成为最大漂移源。
+- 选择：CLAUDE.md 只保留跨文档、易错的**规则**（含 9 条架构不变量）；所有枚举型/具体值改为指向 ARCHITECTURE/PRODUCT_SPEC 对应 §（唯一真源）。新增"冲突裁决"段：ARCHITECTURE > UX_SPEC/DEV_PLAN > PRODUCT_SPEC，矛盾时回写上游。
+- 理由 / 取舍：消除文档间漂移面、降低每 session 上下文成本；代价是查具体值需多跳一层到 ARCHITECTURE（可接受）。
+- 影响：编辑 CLAUDE.md 的任何 agent 遵循此纪律——契约/枚举值落在 spec 与 `memory/contracts.md`，不在 CLAUDE.md。
--- a/memory/gotchas.md
+++ b/memory/gotchas.md
@@ -0,0 +1,38 @@
+# 踩坑与约定（append-only）
+
+> 实现中发现的坑、易错点、约定俗成——让兄弟 agent 不重复踩。一条一项，最新在最上。
+> 只记**非显而易见**的；规格/CLAUDE.md 已写的别重复。
+
+格式：`- [date] @skill <坑/约定> — 缘由 + 怎么做`
+
+---
+
+- [2026-06-18] @qa **M2 E2E 多档位假适配器**：`config.tier_defaults` writer/analyst/light 默认同 provider(deepseek)→单个假适配器(`provider="deepseek"`)即覆盖三档位；据 `req.output_schema is ContinuityReview`(续审)/否则 digest facts schema 分支返回 `parsed`；三档位用不同 `input_tokens` 区分以断言各自落 `usage_ledger`。三端点记账闭环 = review 端点流末 commit + accept 验收事务末 commit 都把网关 ledger flush 真正提交（M1 ledger bug 在 M2 无复发）。
+- [2026-06-18] @qa **E2E 验证「digest 从终稿非草稿」(#4) 手法**：final_text 注入草稿没有的标记串，假 light 适配器把它放进 digest facts 的 `summary`，断言 `chapter_digests.facts["summary"]==标记` 且 `标记 not in draft_text`。accept 409 gate 经 ASGITransport 正常返回（`AppError` 不上抛），断言 `resp.json()["error"]["details"]["missing_conflict_indices"]`（`ErrorCode` StrEnum → `"CONFLICT_UNRESOLVED"`）。
+- [2026-06-18] @frontend **审稿历史 `conflicts` 在 OpenAPI 被标松散 `{[k]:unknown}[]`**（后端用 dict/JSONB 列）→ 前端 `lib/review/history.ts` 安全收窄成 `ReviewConflict{type,where,refs,suggestion}`，缺字段给默认、**保序**（顺序=冲突 gate 的 `conflict_index` 身份，不可重排，否则裁决错位）。
+- [2026-06-18] @frontend **审稿页重审完成重置裁决草稿用 streaming→done 边沿判定**（`wasReviewingRef`）：不能用 conflicts 长度变化判（同数不同组会漏重置），也不能在 seed（phase=idle，进页种历史留痕）时误触发。
+- [2026-06-18] @backend **冲突 gate 判据（accept）**：冲突身份 = 「最近一条 `chapter_reviews.conflicts` 列表的下标」；裁决 `ConflictDecision{conflict_index, verdict:accept|ignore|manual, note?}`；gate 通过 = 裁决的 `conflict_index` 集合**覆盖** `range(len(conflicts))`，缺判→409 `CONFLICT_UNRESOLVED` + `details.missing_conflict_indices`/`conflict_count`；无审稿留痕或零冲突→直通验收。
+- [2026-06-18] @backend/@qa **ASGITransport 默认 `raise_app_exceptions=True`**：accept 事务回滚测试里，repo 抛的非-`AppError`（如 `RuntimeError`）会**上抛到 client 调用方**而非返回 500——测试用 `pytest.raises(RuntimeError)` 包住请求调用、再断言 `session.commits == 0`（证明未部分提交）。DB 级原子回滚由 T2.7 真 pg 覆盖。
+- [2026-06-18] @llm **langgraph 并行节点同写一个 state key 必须配 reducer**：并行四审同 superstep 各写 `{spec.name: ...}` 到 `reviews`，无 reducer → LangGraph 抛 `InvalidUpdateError`。用 `Annotated[dict, merge_reviews]`（浅合并、返回新 dict、不可变）。`ChapterState` 因逐节点填充改 `total=False`。
+- [2026-06-18] @llm **langgraph `add_node` 重载拒收显式 `Callable` 类型别名**：`make_review_node` 返回的具名 `BoundReviewNode` 别名会让 mypy 报 incompatible arg-type。图工厂里改用 **inline `async def` 闭包**（spec 经默认参 `_spec=spec` 绑定，避开循环晚绑定），mypy 才推出精确函数类型匹配重载。`make_review_node` 仍作公共缝（供 T2.5 跑单审）单独保留+单测。
+- [2026-06-18] @llm **审稿失败隔离两层**：审级失败在 `run_review` 内标 `incomplete`（§5.2 任一审不阻塞其余）；归一级意外（畸形 entry）→ `normalize_review` 发一条 `error` 事件后收尾（同 `normalize_deltas` 纪律）。
+- [2026-06-18] @llm **instructor 1.15.3 结构化输出接线**：用 `AsyncInstructor.create_with_completion(messages=..., response_model=..., model=..., max_tokens=...)` 同时拿 `(parsed, raw_completion)`——`raw.usage` 用于记账，避免结构化路径丢 usage；usage 提取统一走 `_usage_from(raw_usage)`（文本/结构化/流共用）。adapter 经可注入 `StructuredClient` Protocol 注 fake（测试不联网）。结构化路径 `ProviderResult.text = parsed.model_dump_json()`（日志/留痕），消费走 `parsed`。**带 `output_schema` 时 `gateway.run(req).parsed` 必非 None**。
+- [2026-06-18] @backend **frozen View 的运行时不可变断言因类型分两种**：dataclass frozen(`ChapterView`)→赋值抛 `FrozenInstanceError` 且 **mypy 会静态报错**（测试里故意赋值需 `# type: ignore[misc]`）；Pydantic frozen(`DigestView`/`ReviewView`)→抛 `ValidationError` 但 **mypy 不静态校验**（**勿加** `# type: ignore`，否则被判 unused-ignore，ruff/mypy 红）。
+- [2026-06-18] @backend **M2 验收-side repos 只 flush 不 commit**：`promote_to_accepted`/`digest.append`/`review.record`/`set_decisions` 均只 `flush()`，交由 T2.4 验收事务单次 `commit()`（对齐「写库副作用在事务/编排层」）；唯独 draft `save_draft` 仍自 commit（M1 自动保存语义）。`(project_id,chapter_no,version)` 唯一性是 **DB 级**(T0.2 models 定义)，纯 fake 单测不断言它（不引 pg 依赖以免 pytest 门禁需起库）→ 由 T2.7 E2E 真实 DB 覆盖。
+- [2026-06-18] @backend/@llm **网关 ledger 只 flush、调用方必须 commit**（不变量「写库副作用在编排层不在网关」的代价）：`SqlAlchemyLedgerSink.record` 只 `flush()` 不 `commit()`；`get_session` 退出时不提交 → 隐式回滚。draft SSE 端点曾因此把 `usage_ledger` 行丢掉（T1.9 暴露）。修复：端点在 SSE 流**耗尽后** `await session.commit()`（FastAPI 缓存 `Depends(get_session)`，网关 ledger 与端点同一 session）。**M2 起凡用网关产 usage 的路径（四审/accept）都要确保所在事务最终提交**，否则记账静默丢失。
+- [2026-06-18] @frontend **Next 里消费 SSE 用 `fetch`+`ReadableStream` reader，不用 `EventSource`**（EventSource 不能 POST、不能干净 abort）。"停"=`AbortController.abort()`，吞掉 `AbortError`、已收 token 留在 state 并被自动保存。流前错误（无凭据→503 `LLM_UNAVAILABLE` 是 **JSON 信封非帧**）经 `!res.ok` 检出、从 `{error:{code,message}}` 解析。
+- [2026-06-18] @frontend apps/web 测试环境坑：`server-only` 包未装→别 import（Server Component 仅靠约定）；vitest 是 **2.x**（无 `toHaveBeenCalledExactlyOnceWith`，用 `toHaveBeenCalledTimes`+`toHaveBeenCalledWith`）；**未装 jsdom/testing-library**→单测走 node env 测纯逻辑（SSE reducer/帧缓冲、debounce、向导状态机），组件 DOM 渲染留给 T1.9 Playwright。
+- [2026-06-18] @backend **stub user 未 seed → FK 风险**：`projects.owner_id` / `usage_ledger.owner_id` / `provider_credentials.owner_id` 全 FK→`users.id`，但仓库无 seeded stub user。约定 `STUB_OWNER_ID = uuid.UUID(int=1)`（对齐网关 `Scope.user_id` stub）。任何写这些表的路径（写章记账、立项、存凭据）跑前必须存在该 user 行——T1.4 幂等 seed（startup/lifespan）；auth 落地后替换为真实 principal。
+- [2026-06-18] @backend 含 nullable 列的唯一约束别用 PG `ON CONFLICT`：`provider_credentials(owner_id,project_id,provider)` / `tier_routing(project_id,tier)` 的 `project_id` 可空，PG 默认 NULLS DISTINCT → 全局行(`project_id=NULL`)的 `ON CONFLICT` 不去重、会插重复。T1.7 用显式 read-modify-write(`project_id IS NULL`)。若 @db 后续给约束加 `NULLS NOT DISTINCT` 可改回原生 upsert。
+- [2026-06-18] @llm langgraph **1.2.5** 实装（pyproject 写 `>=0.2.40` 但装了 1.x，用 1.x API）：`from langgraph.checkpoint.postgres.aio import AsyncPostgresSaver` → `AsyncPostgresSaver.from_conn_string(...)`(async ctx) → `await saver.setup()`（只在 migrations/CI）。mypy strict 下：`add_node` 不收 `functools.partial`（用 `async def` 闭包绑定依赖）；`StateGraph[...]`/`CompiledStateGraph[...]`/`BaseCheckpointSaver[Any]` 需写全类型参；测试 state dict 标注 `: ChapterState`、`ainvoke` config 标注 `: RunnableConfig`。
+- [2026-06-18] @orchestrator **跨包测试同名碰撞**：每包 `tests/` 无 __init__（避免与顶层 `tests` 包撞），但多包并存时 ① pytest 全跑：同名顶层模块 `fakes.py` 撞（"import file mismatch"）→ 测试替身用**全局唯一**名（`fakes_gateway`/`fakes_providers`/`fakes_orchestrator`）；② 聚合 `mypy packages apps`：多个 rootless `conftest.py` 撞成同名模块 → root pyproject `[tool.mypy] exclude=["(^|/)conftest\\.py$"]`（conftest 仅 fixtures，按包仍受检）。test_*.py 保持全局唯一名。
+- [2026-06-18] @backend Fernet 凭据 key 取 `settings.credential_enc_key`(env `CREDENTIAL_ENC_KEY`)；`get_settings` 是 lru_cache，测试改 env 后须 `get_settings.cache_clear()`（在 client fixture 里）。list/GET 不解密（只回脱敏占位），仅 probe 按需解密——缩小明文暴露面。
+- [2026-06-18] @orchestrator 后台 fork 子代理会因 "stream idle timeout" 早夭（T1.1 网关 fork 跑了 8.5 分钟、0 产出、0 文件）。坑：别盲等/盲重启重型 fork。做法：fork 完成后先核对**产物文件 + 自跑门禁**再认其结果；早夭则编排者内联实现该任务（已有完整上下文），不再二次 fork 同一关键路径任务。
+- [2026-06-18] @backend 记忆选择走**确定性子串名匹配**（在 flatten+sorted 的 beats/facts 文本上 + 显式 entities 列表），非 pg_trgm/向量；§3.4 的 pg_trgm/作者 pin 兜底属后续。`selection` 与 `render_cards` 均按 `(kind, name)` 排序→输出与 repo 返回顺序无关；CJK 名按 **codepoint** 排（乙 U+4E59 < 甲 U+7532），测试断言按 codepoint 而非甲乙丙语义。`latest_state` 只进 `volatile`（卡片），`stable_core` 故意不含它以保缓存前缀字节稳定。
+- [2026-06-18] @qa/@llm 包内单测放 `packages/<pkg>/tests/`（**无 __init__.py**，避免与顶层 `tests` 包同名冲突）；测试替身放独立 `fakes.py` 用绝对导入 `from fakes import ...`（不能 `from .conftest import`，相对导入在无包目录下报 no known parent package）；`conftest.py` 只放 fixtures。门禁按包跑：`uv run {ruff check|mypy|pytest} packages/<pkg>`。
+- [2026-06-18] @frontend pnpm 11 配置已迁出 package.json/.npmrc → 只读 `apps/web/pnpm-workspace.yaml`。坑：`pnpm run <script>` 前会跑 verifyDepsBeforeRun 触发隐式 install，遇 `ERR_PNPM_IGNORED_BUILDS`(esbuild/sharp/unrs-resolver 被默认拦截)直接整条命令失败。做法：在 `pnpm-workspace.yaml` 写 `onlyBuiltDependencies:` 白名单 + `verifyDepsBeforeRun: false`。
+- [2026-06-18] @frontend gen:api 离线管线：`scripts/gen-api.mjs` 用 `execFileSync(uv, [...])` 取后端 OpenAPI(不靠运行中的服务) + 直接调 `node_modules/.bin/openapi-typescript`(别用 `pnpm exec`，会再触发 deps 检查)。改后端 schema 后跑 `pnpm gen:api` 重生成 `lib/api/schema.d.ts`。
+- [2026-06-18] @backend async engine 跨事件循环坑：`get_sessionmaker` 用 `lru_cache`，engine 绑定首个 loop；pytest-asyncio 每测试新 loop → 复用会报 `Connection._cancel never awaited`/连接失败。测试里每个 DB 测试 `get_sessionmaker.cache_clear()` 在当前 loop 重建并 `dispose()`。
+- [2026-06-18] @db mypy strict + 跨包 editable 安装：模型里 `from ww_db.base import Base` 会被判成 Any(报 "cannot subclass Any")，需在根 `pyproject.toml` 设 `[tool.mypy] mypy_path=[...各包源码目录...]` + `namespace_packages=true`，否则 editable 包解析不到源码。
+- [2026-06-17] @docs 命名契约：后端 Python/Pydantic 一律 **snake_case**（字段/schema/JSON），前端经 OpenAPI 生成类型消费——别手写 camelCase 共享类型（评审里曾因 TS 旧栈遗留 camelCase 与 Pydantic 契约对不上）。
+- [2026-06-17] @docs 数据写入只走**验收事务**：四审 agent 只读不写；任何 AI 产出入库必经 `accept`（HITL gate）。别在 agent 节点里直接写库。
--- a/packages/agents/README.md
+++ b/packages/agents/README.md
@@ -0,0 +1,2 @@
+# core (@llm/@backend) — 占位骨架
+领域核心(domain/状态机)、编排器(orchestrator/LangGraph 图)、记忆服务(memory)。Phase 1+ 由对应 owner 填充。
--- a/packages/agents/pyproject.toml
+++ b/packages/agents/pyproject.toml
@@ -0,0 +1,20 @@
+[project]
+name = "ww-agents"
+version = "0.0.0"
+requires-python = ">=3.12"
+dependencies = [
+  "pydantic>=2.7",
+  "ww-shared",
+  "ww-llm-gateway",
+]
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.hatch.build.targets.wheel]
+packages = ["ww_agents"]
+
+[tool.uv.sources]
+ww-shared = { workspace = true }
+ww-llm-gateway = { workspace = true }
--- a/packages/agents/tests/test_specs.py
+++ b/packages/agents/tests/test_specs.py
@@ -0,0 +1,95 @@
+"""T2.1 续审契约测试：ContinuityReview schema + continuity_spec 声明（C6）。
+
+契约测试——构造符合 schema 的 mock 响应，校验 type 枚举约束、conflicts 列表、
+四审只读（writes==[]）。不联网、无 DB。
+"""
+
+from __future__ import annotations
+
+import pytest
+from pydantic import ValidationError
+from ww_agents import AgentSpec, Conflict, ContinuityReview, continuity_spec
+
+
+def test_continuity_review_parses_mock_response() -> None:
+    # Arrange：模拟网关 instructor 校验后的结构化产出
+    mock = {
+        "conflicts": [
+            {
+                "type": "性格漂移",
+                "where": "第 3 段，主角忽然示弱",
+                "refs": ["第 1 章人物卡：性格刚烈"],
+                "suggestion": "改为强硬回应，或补内心转折铺垫",
+            },
+            {
+                "type": "时间线倒错",
+                "where": "开篇提到三日后",
+                "refs": ["第 5 章 digest：事件发生在次日"],
+                "suggestion": "统一为次日",
+            },
+        ]
+    }
+
+    # Act
+    review = ContinuityReview.model_validate(mock)
+
+    # Assert
+    assert len(review.conflicts) == 2
+    assert review.conflicts[0].type == "性格漂移"
+    assert review.conflicts[1].refs == ["第 5 章 digest：事件发生在次日"]
+
+
+def test_continuity_review_allows_empty_conflicts() -> None:
+    review = ContinuityReview.model_validate({"conflicts": []})
+    assert review.conflicts == []
+
+
+def test_continuity_review_defaults_to_empty_conflicts() -> None:
+    review = ContinuityReview()
+    assert review.conflicts == []
+
+
+def test_conflict_type_rejects_unknown_value() -> None:
+    with pytest.raises(ValidationError):
+        Conflict.model_validate({"type": "排版错误", "where": "x", "refs": [], "suggestion": "y"})
+
+
+def test_conflict_refs_default_empty() -> None:
+    conflict = Conflict.model_validate(
+        {"type": "设定违例", "where": "战斗场景", "suggestion": "删去违例能力"}
+    )
+    assert conflict.refs == []
+
+
+def test_continuity_spec_is_analyst_tier() -> None:
+    assert continuity_spec.tier == "analyst"
+    assert continuity_spec.name == "continuity"
+
+
+def test_continuity_spec_is_read_only() -> None:
+    # 不变量 #3：四审只读
+    assert continuity_spec.writes == []
+
+
+def test_continuity_spec_declares_expected_reads() -> None:
+    assert continuity_spec.reads == ["chapter_digests", "characters", "world_entities"]
+
+
+def test_continuity_spec_output_schema_is_continuity_review() -> None:
+    assert continuity_spec.output_schema is ContinuityReview
+
+
+def test_continuity_spec_has_nonempty_system_prompt() -> None:
+    assert continuity_spec.system_prompt.strip()
+
+
+def test_agent_spec_is_immutable() -> None:
+    # frozen：加载后不得改动
+    with pytest.raises(ValidationError):
+        continuity_spec.tier = "writer"
+
+
+def test_agent_spec_writer_allows_none_output_schema() -> None:
+    writer = AgentSpec(name="writer", tier="writer", system_prompt="写")
+    assert writer.output_schema is None
+    assert writer.scope == "builtin"
--- a/packages/agents/ww_agents/init.py
+++ b/packages/agents/ww_agents/init.py
@@ -0,0 +1,17 @@
+"""ww-agents：内置 Agent 声明（AgentSpec）+ 结构化输出 schema（C6）。
+
+对齐 ARCH §5.1（AgentSpec）/ §5.4（I/O 契约）/ §6.1（冲突分类）。
+"""
+
+from __future__ import annotations
+
+from .schemas import Conflict, ConflictType, ContinuityReview
+from .specs import AgentSpec, continuity_spec
+
+__all__ = [
+    "AgentSpec",
+    "Conflict",
+    "ConflictType",
+    "ContinuityReview",
+    "continuity_spec",
+]
--- a/packages/agents/ww_agents/schemas.py
+++ b/packages/agents/ww_agents/schemas.py
@@ -0,0 +1,46 @@
+"""续审 Agent 的结构化输出 schema（ARCH §5.4 continuity 行 / §6.1 冲突分类）。
+
+snake_case，Pydantic v2。网关经 instructor 保证产出符合这些 schema（C1/§4.4）。
+
+不变量 #3：四审只读——审稿期只产**冲突清单**，不产 digest（digest 在验收时
+从终稿另提，见不变量 #4 / ARCH §5.5）。
+"""
+
+from __future__ import annotations
+
+from typing import Literal
+
+from pydantic import BaseModel, Field
+
+# ARCH §6.1 五类冲突；受限枚举，便于前端就地裁决分类与统计。
+ConflictType = Literal[
+    "性格漂移",
+    "能力不符",
+    "设定违例",
+    "地理矛盾",
+    "时间线倒错",
+]
+
+
+class Conflict(BaseModel):
+    """单条一致性冲突（ARCH §6.1）。"""
+
+    type: ConflictType = Field(description="冲突分类（五类之一）")
+    where: str = Field(description="本章定位：哪一段/哪句触发冲突")
+    refs: list[str] = Field(
+        default_factory=list,
+        description="冲突来源引用：相关章节号、设定项或人物卡条目",
+    )
+    suggestion: str = Field(description="改法建议")
+
+
+class ContinuityReview(BaseModel):
+    """续审结构化产出：仅冲突清单（无 digest）。
+
+    digest 不在审稿期产——那是验收时从**终稿**另提（不变量 #4）。
+    """
+
+    conflicts: list[Conflict] = Field(
+        default_factory=list,
+        description="检出的一致性冲突；无冲突时为空列表",
+    )
--- a/packages/agents/ww_agents/specs.py
+++ b/packages/agents/ww_agents/specs.py
@@ -0,0 +1,65 @@
+"""Agent 声明式抽象（ARCH §5.1）+ 续审 Agent 实例。
+
+`AgentSpec` 是内置 Agent 与用户 Skill 的同构声明：一份只读声明，由编排器加载、
+经网关按 `tier` 执行。不变量 #2：agent 只声明 `tier`，**不**写具体 model。
+不变量 #3：四审 `writes=[]`（只读），任何 AI 产出入库必经验收事务。
+
+不可变：`AgentSpec` 为 frozen Pydantic 模型——加载后不得改动。
+"""
+
+from __future__ import annotations
+
+from pydantic import BaseModel, ConfigDict, Field
+from ww_llm_gateway.types import Tier
+
+from .schemas import ContinuityReview
+
+
+class AgentSpec(BaseModel):
+    """单一 Agent / Skill 的声明（ARCH §5.1）。"""
+
+    model_config = ConfigDict(frozen=True, arbitrary_types_allowed=True)
+
+    name: str
+    tier: Tier  # 能力档位（网关解析 provider+model）；不含具体 model
+    system_prompt: str
+    # 入/出参契约（Pydantic 模型类型）；writer 纯文本 → output_schema 可为 None
+    input_schema: type[BaseModel] | None = None
+    output_schema: type[BaseModel] | None = None
+    reads: list[str] = Field(default_factory=list)  # 声明式表读权限
+    writes: list[str] = Field(default_factory=list)  # 声明式表写权限（经验收才生效）
+    genre: str | None = None  # 题材适用（Skill 用）
+    scope: str = "builtin"  # builtin / custom / community
+
+
+CONTINUITY_SYSTEM_PROMPT = """你是长篇连载小说的「一致性续审」。你的唯一职责：把本章草稿与\
+作品的既有真相源逐项比对，找出一致性冲突，产出结构化冲突清单。
+
+比对依据（注入材料）：
+- 近况摘要（最近若干章的 chapter_digests）；
+- 相关人物卡（性格、能力、关系、最新状态 latest_state）；
+- 世界观硬规则（world_entities 的不可违背设定）。
+
+按以下五类判定冲突，每条给出本章定位、来源引用与改法建议：
+- 性格漂移：人物言行与其设定/既往表现不符；
+- 能力不符：超出或低于已建立的能力/力量体系边界；
+- 设定违例：违反世界观硬规则；
+- 地理矛盾：地点/距离/空间关系与既有设定冲突；
+- 时间线倒错：事件先后、时序与既有章节矛盾。
+
+纪律：
+- 你**只读、只报冲突**，不改稿、不写库、不产章节摘要（摘要在验收时从终稿另提）。
+- 只报有据可依的真冲突；无冲突则返回空列表，不要臆造。
+- 引用要具体（章节号、设定项、人物卡条目），便于作者就地裁决。"""
+
+
+continuity_spec = AgentSpec(
+    name="continuity",
+    tier="analyst",
+    system_prompt=CONTINUITY_SYSTEM_PROMPT,
+    input_schema=None,  # 注入材料为序列化文本（经记忆 assemble），非结构化入参
+    output_schema=ContinuityReview,
+    reads=["chapter_digests", "characters", "world_entities"],
+    writes=[],  # 只读（不变量 #3）
+    scope="builtin",
+)
--- a/packages/core/tests/test_chapter_promote.py
+++ b/packages/core/tests/test_chapter_promote.py
@@ -0,0 +1,160 @@
+"""T2.3 章节 accepted 版本晋升单测（ARCH §3.3 多版本行 / §5.5 step 1）。
+
+纯内存 fake，无 DB：断言 max(version)+1 计算、草稿行保留、按 project_id 隔离、
+返回不可变 frozen View。`(project_id, chapter_no, version)` 唯一约束的 **DB 级**强制
+由 `chapters` 模型 UniqueConstraint 定义（见 packages/db/ww_db/models.py），真实 DB
+路径由 T2.7 E2E 覆盖；此处只测 repo 计算下一版次的逻辑。
+"""
+
+from __future__ import annotations
+
+import uuid
+from dataclasses import FrozenInstanceError, dataclass, field
+
+import pytest
+from ww_core.domain.chapter_repo import ChapterView
+
+PROJECT = uuid.UUID("00000000-0000-0000-0000-000000000001")
+OTHER = uuid.UUID("00000000-0000-0000-0000-000000000002")
+
+
+@dataclass
+class _Row:
+    project_id: uuid.UUID
+    chapter_no: int
+    volume: int
+    content: str
+    status: str
+    version: int
+
+
+@dataclass
+class FakePromoteRepo:
+    """内存替身——镜像 SqlChapterRepo 晋升语义（max+1 新行，草稿保留）。"""
+
+    rows: list[_Row] = field(default_factory=list)
+
+    def _versions(self, project_id: uuid.UUID, chapter_no: int) -> list[int]:
+        return [
+            r.version
+            for r in self.rows
+            if r.project_id == project_id and r.chapter_no == chapter_no
+        ]
+
+    async def max_version(self, project_id: uuid.UUID, chapter_no: int) -> int:
+        versions = self._versions(project_id, chapter_no)
+        return max(versions) if versions else 0
+
+    async def promote_to_accepted(
+        self, project_id: uuid.UUID, chapter_no: int, *, content: str, volume: int = 1
+    ) -> ChapterView:
+        next_version = (await self.max_version(project_id, chapter_no)) + 1
+        row = _Row(
+            project_id=project_id,
+            chapter_no=chapter_no,
+            volume=volume,
+            content=content,
+            status="accepted",
+            version=next_version,
+        )
+        self.rows.append(row)
+        return ChapterView(
+            project_id=row.project_id,
+            chapter_no=row.chapter_no,
+            volume=row.volume,
+            content=row.content,
+            status=row.status,
+            version=row.version,
+        )
+
+    async def latest_accepted(self, project_id: uuid.UUID, chapter_no: int) -> ChapterView | None:
+        accepted = [
+            r
+            for r in self.rows
+            if r.project_id == project_id and r.chapter_no == chapter_no and r.status == "accepted"
+        ]
+        if not accepted:
+            return None
+        row = max(accepted, key=lambda r: r.version)
+        return ChapterView(
+            project_id=row.project_id,
+            chapter_no=row.chapter_no,
+            volume=row.volume,
+            content=row.content,
+            status=row.status,
+            version=row.version,
+        )
+
+
+def _repo_with_draft() -> FakePromoteRepo:
+    repo = FakePromoteRepo()
+    repo.rows.append(
+        _Row(
+            project_id=PROJECT,
+            chapter_no=1,
+            volume=1,
+            content="draft text",
+            status="draft",
+            version=1,
+        )
+    )
+    return repo
+
+
+async def test_promote_uses_max_version_plus_one() -> None:
+    fake = _repo_with_draft()  # 已有 version=1 草稿
+    view = await fake.promote_to_accepted(PROJECT, 1, content="final")
+    assert view.version == 2  # max(1)+1
+    assert view.status == "accepted"
+    assert view.content == "final"
+
+
+async def test_promote_keeps_draft_row() -> None:
+    fake = _repo_with_draft()
+    await fake.promote_to_accepted(PROJECT, 1, content="final")
+    draft = [r for r in fake.rows if r.status == "draft"]
+    assert len(draft) == 1  # 草稿行保留
+    assert draft[0].content == "draft text"
+
+
+async def test_promote_second_accept_increments_again() -> None:
+    fake = _repo_with_draft()
+    await fake.promote_to_accepted(PROJECT, 1, content="v2")
+    again = await fake.promote_to_accepted(PROJECT, 1, content="v3")
+    assert again.version == 3  # 改稿再验收 → max(2)+1
+
+
+async def test_promote_first_version_when_no_rows() -> None:
+    fake = FakePromoteRepo()  # 空，无草稿
+    view = await fake.promote_to_accepted(PROJECT, 9, content="x")
+    assert view.version == 1  # 0+1
+
+
+async def test_max_version_isolated_by_project() -> None:
+    fake = _repo_with_draft()  # PROJECT/ch1 有 version=1
+    # OTHER 项目同章号互不影响
+    assert await fake.max_version(OTHER, 1) == 0
+    view = await fake.promote_to_accepted(OTHER, 1, content="other")
+    assert view.version == 1
+
+
+async def test_latest_accepted_returns_highest_version() -> None:
+    fake = _repo_with_draft()
+    await fake.promote_to_accepted(PROJECT, 1, content="v2")
+    await fake.promote_to_accepted(PROJECT, 1, content="v3")
+    latest = await fake.latest_accepted(PROJECT, 1)
+    assert latest is not None
+    assert latest.version == 3
+    assert latest.content == "v3"
+
+
+async def test_latest_accepted_none_when_only_draft() -> None:
+    fake = _repo_with_draft()
+    assert await fake.latest_accepted(PROJECT, 1) is None
+
+
+async def test_chapter_view_is_frozen() -> None:
+    fake = FakePromoteRepo()
+    view = await fake.promote_to_accepted(PROJECT, 1, content="x")
+    with pytest.raises(FrozenInstanceError):
+        view.version = 99  # type: ignore[misc]
--- a/packages/core/tests/test_digest_repo.py
+++ b/packages/core/tests/test_digest_repo.py
@@ -0,0 +1,74 @@
+"""T2.3 digest 追加 repo 单测（ARCH §3.3 append-only / §5.5）。
+
+纯内存 fake，无 DB：断言 append-only 语义（永不覆盖）、按 project_id 过滤、
+返回不可变 frozen View。DB 级 append 行为同样由 `chapter_digests` 无唯一约束保证，
+真实 DB 路径由 T2.7 E2E 覆盖。
+"""
+
+from __future__ import annotations
+
+import uuid
+from dataclasses import dataclass, field
+
+import pytest
+from pydantic import ValidationError
+from ww_core.domain.digest_repo import DigestAppendRepo
+from ww_core.domain.repositories import DigestView
+
+PROJECT = uuid.UUID("00000000-0000-0000-0000-000000000001")
+OTHER = uuid.UUID("00000000-0000-0000-0000-000000000002")
+
+
+@dataclass
+class _Row:
+    project_id: uuid.UUID
+    chapter_no: int
+    facts: dict[str, object]
+
+
+@dataclass
+class FakeDigestAppendRepo:
+    """append-only 内存替身——镜像 SqlDigestAppendRepo 语义（每次 append 新增一行）。"""
+
+    rows: list[_Row] = field(default_factory=list)
+
+    async def append(
+        self, project_id: uuid.UUID, chapter_no: int, *, facts: dict[str, object]
+    ) -> DigestView:
+        self.rows.append(_Row(project_id=project_id, chapter_no=chapter_no, facts=dict(facts)))
+        return DigestView(chapter_no=chapter_no, facts=dict(facts))
+
+
+def _repo() -> FakeDigestAppendRepo:
+    return FakeDigestAppendRepo()
+
+
+async def test_append_returns_frozen_view() -> None:
+    repo: DigestAppendRepo = _repo()
+    view = await repo.append(PROJECT, 1, facts={"entities": ["林动"]})
+    assert isinstance(view, DigestView)
+    assert view.chapter_no == 1
+    assert view.facts == {"entities": ["林动"]}
+    # frozen — 不可就地突变
+    with pytest.raises(ValidationError):
+        view.chapter_no = 9
+
+
+async def test_append_is_append_only_never_overwrites() -> None:
+    fake = _repo()
+    repo: DigestAppendRepo = fake
+    await repo.append(PROJECT, 1, facts={"v": "first"})
+    await repo.append(PROJECT, 1, facts={"v": "second"})
+    # 同章两次 append → 两行都在，旧的不被覆盖
+    same_chapter = [r for r in fake.rows if r.chapter_no == 1]
+    assert len(same_chapter) == 2
+    assert [r.facts["v"] for r in same_chapter] == ["first", "second"]
+
+
+async def test_append_does_not_mutate_input_facts() -> None:
+    fake = _repo()
+    repo: DigestAppendRepo = fake
+    facts: dict[str, object] = {"entities": ["林动"]}
+    await repo.append(PROJECT, 1, facts=facts)
+    facts["entities"] = ["改了"]  # 改调用方的 dict 不应影响已存行
+    assert fake.rows[0].facts == {"entities": ["林动"]}
--- a/packages/core/tests/test_review.py
+++ b/packages/core/tests/test_review.py
@@ -0,0 +1,244 @@
+"""T2.2 审稿子图单测——审稿节点 + collect 留痕 + review SSE 归一（ARCH §5.2/§7.3）。
+
+全部注入 mock 网关 / 内存 fake repo，无真 LLM、无真 Postgres（图用 MemorySaver）。
+asyncio_mode=auto。
+"""
+
+from __future__ import annotations
+
+import uuid
+from typing import Any
+
+from fakes_orchestrator import (
+    FailingRunGateway,
+    FakeReviewRepo,
+    FakeRunGateway,
+)
+from langchain_core.runnables import RunnableConfig
+from langgraph.checkpoint.memory import MemorySaver
+from ww_agents import Conflict, ContinuityReview, continuity_spec
+from ww_core.orchestrator import (
+    CONTINUITY,
+    EVENT_CONFLICT,
+    EVENT_DONE,
+    EVENT_ERROR,
+    EVENT_SECTION,
+    REVIEW_INCOMPLETE,
+    REVIEW_OK,
+    SECTION_DONE,
+    SECTION_INCOMPLETE,
+    ChapterState,
+    build_review_context,
+    build_review_graph,
+    build_review_request,
+    collect_reviews,
+    extract_conflicts,
+    make_review_node,
+    normalize_review,
+    run_review,
+)
+from ww_shared import AppError, ErrorCode
+
+PROJECT = uuid.UUID("00000000-0000-0000-0000-000000000001")
+USER = uuid.UUID("00000000-0000-0000-0000-0000000000aa")
+
+STABLE = "## 世界观硬规则\n灵气可凝丹"
+VOLATILE = "## 近况\n主角已破境"
+DRAFT = "他一拳轰碎山岳。"
+
+_CONFLICT = Conflict(
+    type="能力不符",
+    where="第3段「一拳轰碎山岳」",
+    refs=["人物卡:主角:力量上限=裂石"],
+    suggestion="改为震裂巨石",
+)
+
+
+def _state(reviews: dict[str, Any] | None = None) -> ChapterState:
+    state: ChapterState = {
+        "project_id": PROJECT,
+        "chapter_no": 7,
+        "user_id": USER,
+        "stable_core": STABLE,
+        "volatile": VOLATILE,
+        "draft": DRAFT,
+        "review_context": build_review_context(draft=DRAFT, stable_core=STABLE, volatile=VOLATILE),
+    }
+    if reviews is not None:
+        state["reviews"] = reviews
+    return state
+
+
+# ---- build_review_context：确定性、含草稿+材料 ----
+
+
+def test_build_review_context_is_deterministic_and_contains_parts() -> None:
+    ctx1 = build_review_context(draft=DRAFT, stable_core=STABLE, volatile=VOLATILE)
+    ctx2 = build_review_context(draft=DRAFT, stable_core=STABLE, volatile=VOLATILE)
+
+    assert ctx1 == ctx2  # 无时间戳/随机 → 同输入同输出
+    assert DRAFT in ctx1
+    assert STABLE in ctx1
+    assert VOLATILE in ctx1
+
+
+# ---- build_review_request：tier 不变量、缓存断点、output_schema、run 非 stream ----
+
+
+def test_build_review_request_uses_spec_tier_and_cached_prompt() -> None:
+    req = build_review_request(continuity_spec, _state())
+
+    assert req.tier == "analyst"  # 不变量②：spec 档位透传，不传 model
+    assert req.stream is False  # 续审用 run() 非 stream()
+    assert len(req.system) == 1
+    assert req.system[0].text == continuity_spec.system_prompt
+    assert req.system[0].cache is True  # 不变量#9
+    assert req.output_schema is ContinuityReview
+    assert req.scope.user_id == USER
+    assert req.scope.project_id == PROJECT
+
+
+# ---- run_review：结构化结果回 state、只读不写库 ----
+
+
+async def test_run_review_returns_ok_with_parsed_result() -> None:
+    gateway = FakeRunGateway(ContinuityReview(conflicts=[_CONFLICT]))
+
+    result = await run_review(continuity_spec, _state(), gateway=gateway)
+
+    assert gateway.call_count == 1
+    entry = result["reviews"][CONTINUITY]
+    assert entry["status"] == REVIEW_OK
+    assert entry["result"]["conflicts"][0]["type"] == "能力不符"
+
+
+async def test_run_review_isolates_gateway_failure_as_incomplete() -> None:
+    gateway = FailingRunGateway(AppError(ErrorCode.LLM_UNAVAILABLE, "boom"))
+
+    result = await run_review(continuity_spec, _state(), gateway=gateway)
+
+    entry = result["reviews"][CONTINUITY]
+    assert entry["status"] == REVIEW_INCOMPLETE  # §5.2：失败隔离、不上抛
+    assert entry["result"] is None
+
+
+async def test_make_review_node_binds_gateway() -> None:
+    gateway = FakeRunGateway(ContinuityReview(conflicts=[]))
+    node = make_review_node(continuity_spec, gateway)
+
+    result = await node(_state())
+
+    assert result["reviews"][CONTINUITY]["status"] == REVIEW_OK
+
+
+# ---- collect：抽冲突 + 落 chapter_reviews 留痕（只 flush，不在节点 commit） ----
+
+
+def test_extract_conflicts_only_from_ok_continuity() -> None:
+    ok = {CONTINUITY: {"status": REVIEW_OK, "result": {"conflicts": [_CONFLICT.model_dump()]}}}
+    incomplete = {CONTINUITY: {"status": REVIEW_INCOMPLETE, "result": None}}
+
+    assert len(extract_conflicts(ok)) == 1
+    assert extract_conflicts(incomplete) == []
+    assert extract_conflicts({}) == []
+
+
+async def test_collect_records_conflicts_to_review_repo() -> None:
+    repo = FakeReviewRepo()
+    reviews = {CONTINUITY: {"status": REVIEW_OK, "result": {"conflicts": [_CONFLICT.model_dump()]}}}
+
+    out = await collect_reviews(_state(reviews), review_repo=repo)
+
+    assert out == {}  # 不作真相源：留痕在表（不变量#5）
+    assert len(repo.records) == 1
+    rec = repo.records[0]
+    assert rec["project_id"] == PROJECT
+    assert rec["chapter_no"] == 7
+    assert rec["chapter_version"] is None  # version 绑定/裁决归 T2.4
+    assert rec["conflicts"][0]["type"] == "能力不符"
+
+
+async def test_collect_records_empty_when_review_incomplete() -> None:
+    repo = FakeReviewRepo()
+    reviews = {CONTINUITY: {"status": REVIEW_INCOMPLETE, "result": None}}
+
+    await collect_reviews(_state(reviews), review_repo=repo)
+
+    assert repo.records[0]["conflicts"] == []  # 未完成 → 不臆造冲突
+
+
+# ---- 图：START→continuity→collect→END，全程 mock，MemorySaver ----
+
+
+def test_build_review_graph_compiles_with_nodes() -> None:
+    graph = build_review_graph(
+        FakeRunGateway(ContinuityReview(conflicts=[])),
+        FakeReviewRepo(),
+        checkpointer=MemorySaver(),
+    )
+
+    nodes = graph.get_graph().nodes
+    assert CONTINUITY in nodes
+    assert "collect" in nodes
+    assert graph.checkpointer is not None
+
+
+async def test_review_graph_runs_continuity_then_collect_end_to_end() -> None:
+    gateway = FakeRunGateway(ContinuityReview(conflicts=[_CONFLICT]))
+    repo = FakeReviewRepo()
+    graph = build_review_graph(gateway, repo, checkpointer=MemorySaver())
+    config: RunnableConfig = {"configurable": {"thread_id": "rev-1"}}
+
+    final = await graph.ainvoke(_state(), config=config)
+
+    assert final["reviews"][CONTINUITY]["status"] == REVIEW_OK
+    assert len(repo.records) == 1  # collect 落了留痕
+    assert repo.records[0]["conflicts"][0]["type"] == "能力不符"
+
+
+async def test_review_graph_does_not_block_on_review_failure() -> None:
+    gateway = FailingRunGateway(RuntimeError("down"))
+    repo = FakeReviewRepo()
+    graph = build_review_graph(gateway, repo, checkpointer=MemorySaver())
+    config: RunnableConfig = {"configurable": {"thread_id": "rev-2"}}
+
+    final = await graph.ainvoke(_state(), config=config)
+
+    # 审失败被隔离为 incomplete，图照常走到 collect 并留痕（空冲突）
+    assert final["reviews"][CONTINUITY]["status"] == REVIEW_INCOMPLETE
+    assert repo.records[0]["conflicts"] == []
+
+
+# ---- review SSE 归一：section + conflict + done；incomplete 路径；异常→error ----
+
+
+async def test_normalize_review_emits_section_conflict_done() -> None:
+    reviews = {CONTINUITY: {"status": REVIEW_OK, "result": {"conflicts": [_CONFLICT.model_dump()]}}}
+
+    events = [e async for e in normalize_review(reviews)]
+
+    assert [e.event for e in events] == [EVENT_SECTION, EVENT_CONFLICT, EVENT_DONE]
+    assert events[0].data == {"name": CONTINUITY, "status": SECTION_DONE}
+    assert events[1].data["type"] == "能力不符"
+    assert events[1].data["refs"] == ["人物卡:主角:力量上限=裂石"]
+    assert events[-1].data == {"length": 1}
+
+
+async def test_normalize_review_marks_incomplete_section_without_conflicts() -> None:
+    reviews = {CONTINUITY: {"status": REVIEW_INCOMPLETE, "result": None}}
+
+    events = [e async for e in normalize_review(reviews)]
+
+    assert [e.event for e in events] == [EVENT_SECTION, EVENT_DONE]
+    assert events[0].data == {"name": CONTINUITY, "status": SECTION_INCOMPLETE}
+
+
+async def test_normalize_review_maps_unexpected_error_to_error_event() -> None:
+    # 畸形 entry（result 非 dict）触发归一内部异常 → error 事件，不上抛
+    reviews = {CONTINUITY: {"status": REVIEW_OK, "result": 123}}
+
+    events = [e async for e in normalize_review(reviews, request_id="req-9")]
+
+    assert events[-1].event == EVENT_ERROR
+    assert events[-1].data["code"] == ErrorCode.INTERNAL
+    assert events[-1].data["request_id"] == "req-9"
--- a/packages/core/tests/test_review_repo.py
+++ b/packages/core/tests/test_review_repo.py
@@ -0,0 +1,130 @@
+"""T2.3 审稿留痕 repo 单测（ARCH §5.4/§5.5）。
+
+纯内存 fake，无 DB：断言 record 写入字段、list 历史新→旧、set_decisions 裁决留痕，
+均返回不可变 frozen View，按 project_id 隔离。
+"""
+
+from __future__ import annotations
+
+import uuid
+from dataclasses import dataclass, field
+
+import pytest
+from pydantic import ValidationError
+from ww_core.domain.review_repo import ReviewRepo, ReviewView
+
+PROJECT = uuid.UUID("00000000-0000-0000-0000-000000000001")
+OTHER = uuid.UUID("00000000-0000-0000-0000-000000000002")
+
+
+@dataclass
+class FakeReviewRepo:
+    """内存替身——镜像 SqlReviewRepo 语义（append 每次审稿；裁决就地补 decisions）。"""
+
+    rows: list[ReviewView] = field(default_factory=list)
+    _seq: int = 0
+
+    async def record(
+        self,
+        project_id: uuid.UUID,
+        chapter_no: int,
+        *,
+        chapter_version: int | None = None,
+        conflicts: list[dict[str, object]],
+        foreshadow_sug: list[dict[str, object]] | None = None,
+        style: dict[str, object] | None = None,
+        pace: dict[str, object] | None = None,
+        health_score: int | None = None,
+    ) -> ReviewView:
+        self._seq += 1
+        view = ReviewView(
+            id=uuid.UUID(int=self._seq),
+            project_id=project_id,
+            chapter_no=chapter_no,
+            chapter_version=chapter_version,
+            conflicts=list(conflicts),
+            foreshadow_sug=list(foreshadow_sug or []),
+            style=style,
+            pace=pace,
+            health_score=health_score,
+            decisions=None,
+        )
+        self.rows.append(view)
+        return view
+
+    async def list_for_chapter(self, project_id: uuid.UUID, chapter_no: int) -> list[ReviewView]:
+        matched = [
+            r for r in self.rows if r.project_id == project_id and r.chapter_no == chapter_no
+        ]
+        return list(reversed(matched))  # 新→旧
+
+    async def set_decisions(
+        self, review_id: uuid.UUID, *, decisions: dict[str, object]
+    ) -> ReviewView:
+        idx, old = next((i, r) for i, r in enumerate(self.rows) if r.id == review_id)
+        updated = old.model_copy(update={"decisions": dict(decisions)})
+        self.rows[idx] = updated
+        return updated
+
+
+def _repo() -> FakeReviewRepo:
+    return FakeReviewRepo()
+
+
+async def test_record_persists_review_fields() -> None:
+    repo: ReviewRepo = _repo()
+    view = await repo.record(
+        PROJECT,
+        5,
+        chapter_version=2,
+        conflicts=[{"type": "性格漂移", "where": "p3"}],
+        health_score=80,
+    )
+    assert isinstance(view, ReviewView)
+    assert view.chapter_no == 5
+    assert view.chapter_version == 2
+    assert view.conflicts == [{"type": "性格漂移", "where": "p3"}]
+    assert view.health_score == 80
+    assert view.decisions is None
+
+
+async def test_record_defaults_empty_collections() -> None:
+    repo: ReviewRepo = _repo()
+    view = await repo.record(PROJECT, 1, conflicts=[])
+    assert view.foreshadow_sug == []
+    assert view.style is None
+    assert view.pace is None
+    assert view.chapter_version is None
+
+
+async def test_list_for_chapter_newest_first() -> None:
+    repo: ReviewRepo = _repo()
+    await repo.record(PROJECT, 7, conflicts=[{"n": 1}])
+    await repo.record(PROJECT, 7, conflicts=[{"n": 2}])
+    history = await repo.list_for_chapter(PROJECT, 7)
+    assert [h.conflicts[0]["n"] for h in history] == [2, 1]  # 新→旧
+
+
+async def test_list_for_chapter_isolated_by_project() -> None:
+    repo: ReviewRepo = _repo()
+    await repo.record(PROJECT, 1, conflicts=[])
+    await repo.record(OTHER, 1, conflicts=[])
+    history = await repo.list_for_chapter(PROJECT, 1)
+    assert len(history) == 1
+    assert all(h.project_id == PROJECT for h in history)
+
+
+async def test_set_decisions_records_adjudication() -> None:
+    repo: ReviewRepo = _repo()
+    rec = await repo.record(PROJECT, 3, conflicts=[{"type": "设定违例"}])
+    decisions = {"c0": "采纳", "c1": "忽略"}
+    updated = await repo.set_decisions(rec.id, decisions=decisions)
+    assert updated.id == rec.id
+    assert updated.decisions == decisions
+
+
+async def test_view_is_frozen() -> None:
+    repo: ReviewRepo = _repo()
+    view = await repo.record(PROJECT, 1, conflicts=[])
+    with pytest.raises(ValidationError):
+        view.health_score = 50
--- a/packages/core/ww_core/domain/init.py
+++ b/packages/core/ww_core/domain/init.py
@@ -0,0 +1,37 @@
+"""领域 Repository 协议 + SQLAlchemy 实现 + 只读视图（ARCH §3.5）。"""
+
+from __future__ import annotations
+
+from ww_core.domain.chapter_repo import (
+    ChapterDraftView,
+    ChapterRepo,
+    ChapterView,
+    SqlChapterRepo,
+)
+from ww_core.domain.digest_repo import DigestAppendRepo, SqlDigestAppendRepo
+from ww_core.domain.project_repo import (
+    ProjectCreate,
+    ProjectRepo,
+    ProjectView,
+    SqlProjectRepo,
+)
+from ww_core.domain.repositories import DigestView, MemoryRepos
+from ww_core.domain.review_repo import ReviewRepo, ReviewView, SqlReviewRepo
+
+__all__ = [
+    "ChapterDraftView",
+    "ChapterRepo",
+    "ChapterView",
+    "SqlChapterRepo",
+    "DigestAppendRepo",
+    "SqlDigestAppendRepo",
+    "DigestView",
+    "MemoryRepos",
+    "ProjectCreate",
+    "ProjectRepo",
+    "ProjectView",
+    "SqlProjectRepo",
+    "ReviewRepo",
+    "ReviewView",
+    "SqlReviewRepo",
+]
--- a/packages/core/ww_core/domain/digest_repo.py
+++ b/packages/core/ww_core/domain/digest_repo.py
@@ -0,0 +1,53 @@
+"""章节摘要**写**侧 Repository（append-only；ARCH §3.3 / §5.5 / §6.1）。
+
+`chapter_digests` 是 append-only：每次验收从**终稿**提炼一行事实，**永不覆盖**历史
+（不变量 #4：digest 从终稿提炼）。读侧（`recent`，供 assemble 注入）已在
+`ww_core.memory.sql_repositories.SqlDigestRepo` / `domain.repositories.DigestRepo` 提供；
+本模块只加**写**能力，不动读侧。
+
+命名：写侧 Protocol 命名 `DigestAppendRepo`（区别于 `repositories.DigestRepo` 读侧），
+共用 `DigestView`，避免同名歧义（见 memory/decisions）。
+"""
+
+from __future__ import annotations
+
+import uuid
+from typing import Any, Protocol
+
+from sqlalchemy.ext.asyncio import AsyncSession
+from ww_db.models import ChapterDigest
+
+from ww_core.domain.repositories import DigestView
+
+
+class DigestAppendRepo(Protocol):
+    """摘要追加接口（append-only，按 project_id 隔离）。"""
+
+    async def append(
+        self, project_id: uuid.UUID, chapter_no: int, *, facts: dict[str, Any]
+    ) -> DigestView:
+        """追加一行 digest（永不覆盖既有行）；返回不可变 frozen View。"""
+        ...
+
+
+class SqlDigestAppendRepo:
+    """SQLAlchemy 实现：始终 INSERT 新行（append-only）。
+
+    **只 flush 不 commit**：验收事务（T2.4）把晋升+digest+裁决留痕作为单事务提交。
+    """
+
+    def __init__(self, session: AsyncSession) -> None:
+        self._s = session
+
+    async def append(
+        self, project_id: uuid.UUID, chapter_no: int, *, facts: dict[str, Any]
+    ) -> DigestView:
+        row = ChapterDigest(
+            project_id=project_id,
+            chapter_no=chapter_no,
+            facts=dict(facts),
+        )
+        self._s.add(row)
+        await self._s.flush()
+        await self._s.refresh(row)
+        return DigestView(chapter_no=row.chapter_no, facts=dict(row.facts))
--- a/packages/core/ww_core/domain/review_repo.py
+++ b/packages/core/ww_core/domain/review_repo.py
@@ -0,0 +1,138 @@
+"""审稿留痕 Repository（四审报告 + 裁决；ARCH §5.4 / §5.5 / §6.1）。
+
+- `record`：T2.2 collect 把并行四审结果 append 一行 `chapter_reviews`（每次审稿一行）。
+- `list_for_chapter`：T2.5 审稿历史（新→旧）。
+- `set_decisions`：T2.4 验收事务里写本次裁决留痕（`chapter_reviews.decisions`）。
+
+四审只读、不直接写库；本 repo 是「审稿结果落库」与「裁决留痕」的唯一写入点
+（不变量 #3：AI 产出经验收 gate）。`record`/`set_decisions` 只 flush 不 commit，
+便于在编排/验收事务里组合提交。
+"""
+
+from __future__ import annotations
+
+import uuid
+from typing import Any, Protocol
+
+from pydantic import BaseModel, Field
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+from ww_db.models import ChapterReview
+
+
+class ReviewView(BaseModel):
+    """只读审稿留痕快照（snake_case，frozen）。"""
+
+    model_config = {"frozen": True}
+
+    id: uuid.UUID
+    project_id: uuid.UUID
+    chapter_no: int
+    chapter_version: int | None = None
+    conflicts: list[dict[str, Any]] = Field(default_factory=list)
+    foreshadow_sug: list[dict[str, Any]] = Field(default_factory=list)
+    style: dict[str, Any] | None = None
+    pace: dict[str, Any] | None = None
+    health_score: int | None = None
+    decisions: dict[str, Any] | None = None
+
+
+class ReviewRepo(Protocol):
+    """审稿留痕读写接口（按 project_id 隔离）。"""
+
+    async def record(
+        self,
+        project_id: uuid.UUID,
+        chapter_no: int,
+        *,
+        chapter_version: int | None = None,
+        conflicts: list[dict[str, Any]],
+        foreshadow_sug: list[dict[str, Any]] | None = None,
+        style: dict[str, Any] | None = None,
+        pace: dict[str, Any] | None = None,
+        health_score: int | None = None,
+    ) -> ReviewView:
+        """append 一行审稿报告（T2.2 collect 写入）。"""
+        ...
+
+    async def list_for_chapter(self, project_id: uuid.UUID, chapter_no: int) -> list[ReviewView]:
+        """该章审稿历史，新→旧（T2.5）。"""
+        ...
+
+    async def set_decisions(self, review_id: uuid.UUID, *, decisions: dict[str, Any]) -> ReviewView:
+        """写本次裁决留痕到指定审稿行（T2.4 验收事务）。"""
+        ...
+
+
+def _to_view(row: ChapterReview) -> ReviewView:
+    return ReviewView(
+        id=row.id,
+        project_id=row.project_id,
+        chapter_no=row.chapter_no,
+        chapter_version=row.chapter_version,
+        conflicts=list(row.conflicts or []),
+        foreshadow_sug=list(row.foreshadow_sug or []),
+        style=row.style,
+        pace=row.pace,
+        health_score=row.health_score,
+        decisions=row.decisions,
+    )
+
+
+class SqlReviewRepo:
+    """SQLAlchemy 实现：append 审稿行 + 历史查询 + 裁决留痕（只 flush 不 commit）。"""
+
+    def __init__(self, session: AsyncSession) -> None:
+        self._s = session
+
+    async def record(
+        self,
+        project_id: uuid.UUID,
+        chapter_no: int,
+        *,
+        chapter_version: int | None = None,
+        conflicts: list[dict[str, Any]],
+        foreshadow_sug: list[dict[str, Any]] | None = None,
+        style: dict[str, Any] | None = None,
+        pace: dict[str, Any] | None = None,
+        health_score: int | None = None,
+    ) -> ReviewView:
+        row = ChapterReview(
+            project_id=project_id,
+            chapter_no=chapter_no,
+            chapter_version=chapter_version,
+            conflicts=list(conflicts),
+            foreshadow_sug=list(foreshadow_sug or []),
+            style=style,
+            pace=pace,
+            health_score=health_score,
+            decisions=None,
+        )
+        self._s.add(row)
+        await self._s.flush()
+        await self._s.refresh(row)
+        return _to_view(row)
+
+    async def list_for_chapter(self, project_id: uuid.UUID, chapter_no: int) -> list[ReviewView]:
+        rows = (
+            await self._s.execute(
+                select(ChapterReview)
+                .where(
+                    ChapterReview.project_id == project_id,
+                    ChapterReview.chapter_no == chapter_no,
+                )
+                .order_by(ChapterReview.created_at.desc())
+            )
+        ).scalars()
+        return [_to_view(r) for r in rows]
+
+    async def set_decisions(self, review_id: uuid.UUID, *, decisions: dict[str, Any]) -> ReviewView:
+        row = (
+            await self._s.execute(select(ChapterReview).where(ChapterReview.id == review_id))
+        ).scalar_one_or_none()
+        if row is None:
+            raise LookupError(f"chapter_review not found: {review_id}")
+        row.decisions = dict(decisions)
+        await self._s.flush()
+        await self._s.refresh(row)
+        return _to_view(row)
--- a/packages/core/ww_core/orchestrator/collect.py
+++ b/packages/core/ww_core/orchestrator/collect.py
@@ -0,0 +1,92 @@
+"""collect 节点（C4 扩 / ARCH §5.2 collect 行）——汇总并行审 → 落 `chapter_reviews` 留痕。
+
+并行四审各把 `{spec.name: {status, result}}` 合并进 `state["reviews"]`（reducer，见 state.py）；
+collect 把它们汇总，调 `review_repo.record(...)` append 一行 `chapter_reviews`（真相源留痕）。
+
+不变量 #3：审稿节点只读不写库；**唯一写入点是这里经 `review_repo`**（仍是「留痕」非「生效」，
+AI 产出真正入库经 T2.4 验收事务的裁决）。
+
+记账边界（gotcha「网关 ledger 只 flush」）：审稿经网关产 usage（网关内 `flush` 进同一 session）；
+collect 与 review_repo 同样**只 flush 不 commit**——`commit` 归 HTTP 端点（T2.5）/验收事务（T2.4），
+与 draft 端点一致（端点在流耗尽后 `await session.commit()`）。本节点绝不 commit。
+
+M2 只接 continuity：从 `reviews["continuity"].result.conflicts` 抽冲突落 `conflicts` 列；
+foreshadow/style/pace 列留空（M3/M4 接入后填）。设计成按 spec 名取分项，便于扩展。
+"""
+
+from __future__ import annotations
+
+import uuid
+from typing import Any, Protocol
+
+import structlog
+
+from .review_node import REVIEW_OK
+from .state import ChapterState
+
+log = structlog.get_logger(__name__)
+
+CONTINUITY = "continuity"
+
+
+class ReviewRecorder(Protocol):
+    """collect 对审稿留痕 repo 的最小依赖——只需 `record`（注入真 repo 或内存 fake）。
+
+    形对齐 `domain.review_repo.ReviewRepo.record`（只 flush 不 commit）。
+    """
+
+    async def record(
+        self,
+        project_id: uuid.UUID,
+        chapter_no: int,
+        *,
+        chapter_version: int | None = None,
+        conflicts: list[dict[str, Any]],
+        foreshadow_sug: list[dict[str, Any]] | None = None,
+        style: dict[str, Any] | None = None,
+        pace: dict[str, Any] | None = None,
+        health_score: int | None = None,
+    ) -> Any: ...
+
+
+def extract_conflicts(reviews: dict[str, Any]) -> list[dict[str, Any]]:
+    """从 continuity 分项抽冲突清单（纯函数）。
+
+    仅当该审 `ok` 且有结果时取其 `conflicts`；未完成/缺席 → 空列表（不臆造）。
+    """
+    entry = reviews.get(CONTINUITY)
+    if not entry or entry.get("status") != REVIEW_OK:
+        return []
+    result = entry.get("result") or {}
+    conflicts = result.get("conflicts") or []
+    return [dict(c) for c in conflicts]
+
+
+async def collect_reviews(
+    state: ChapterState,
+    *,
+    review_repo: ReviewRecorder,
+) -> dict[str, Any]:
+    """collect 节点：汇总并行审 → 抽冲突 → `review_repo.record` 留痕（只 flush 不 commit）。
+
+    直接调用本函数（注入内存 fake repo）即可单测，无需图运行时。
+    `chapter_version=None`：留痕行不绑具体 version（T2.4 验收时再绑/裁决，R3/R4）。
+    返回空增量字典——审稿真相已在表，state 不作真相源（不变量 #5）。
+    """
+    reviews = state.get("reviews") or {}
+    conflicts = extract_conflicts(reviews)
+    await review_repo.record(
+        state["project_id"],
+        state["chapter_no"],
+        chapter_version=None,
+        conflicts=conflicts,
+    )
+    log.info(
+        "collect_reviews_recorded",
+        project_id=str(state["project_id"]),
+        chapter_no=state["chapter_no"],
+        conflict_count=len(conflicts),
+        reviews=sorted(reviews.keys()),
+    )
+    # 留痕已在表（真相源）；不在节点 commit（端点/事务层负责，见模块 docstring）。
+    return {}
--- a/packages/core/ww_core/orchestrator/review_node.py
+++ b/packages/core/ww_core/orchestrator/review_node.py
@@ -0,0 +1,118 @@
+"""审稿节点 + 审稿上下文拼装（C4 扩 / ARCH §5.2 §5.4 reviewer 行）。
+
+M2 先接 **continuity**（C6 `continuity_spec`），设计成可扩——图按一组 review specs
+循环加并行分支（M3/M4 再加 foreshadow/style/pace 三审）。
+
+确定性边界（CLAUDE.md「LangGraph」纪律）：
+- 节点逻辑里**无 LLM 非确定性**——不确定性藏在网关后；节点只做
+  `AgentSpec + review_context → LlmRequest` 的纯构造 + 转发 `Gateway.run` 的 `parsed`。
+- 因此注入 mock 网关（产 `parsed`）即可单测，不需要图运行时、不需要真 Postgres。
+
+不变量 #2：agent 只声明 `tier`，绝不传具体 model（spec.tier 透传）。
+不变量 #3：审稿节点**只读、不写库**——结构化结果回到 state，落库经 collect→review_repo。
+不变量 #9：`spec.system_prompt` 进缓存断点前块（cache=True）；草稿+近况材料进 `input`（断点后）。
+
+任一审失败不阻塞其余（§5.2）：节点内捕获网关异常 → 返回该审「未完成」结构化占位，
+不上抛、不毁图——其余并行分支照常汇入 collect。
+"""
+
+from __future__ import annotations
+
+from collections.abc import Awaitable, Callable
+from typing import Any, Protocol
+
+import structlog
+from ww_agents import AgentSpec
+from ww_llm_gateway.types import Block, LlmRequest, LlmResponse, Scope
+
+from .state import ChapterState
+
+log = structlog.get_logger(__name__)
+
+# 审稿分项状态（落 state[reviews][name].status；collect / SSE 据此分流）。
+REVIEW_OK = "ok"
+REVIEW_INCOMPLETE = "incomplete"  # 该审网关失败 → 标未完成，不阻塞其余（§5.2）
+
+# 已绑定 gateway 的节点形（图工厂 / T2.5 直接跑审稿时用）。
+BoundReviewNode = Callable[[ChapterState], Awaitable[dict[str, Any]]]
+
+
+class GatewayRun(Protocol):
+    """审稿节点对网关的最小依赖——只需 `run`（注入真网关或 mock）。"""
+
+    async def run(self, req: LlmRequest) -> LlmResponse: ...
+
+
+def build_review_context(*, draft: str, stable_core: str, volatile: str) -> str:
+    """拼装审稿注入文本（确定性，无时间戳）。
+
+    审稿材料 = 本章草稿 + 近况摘要/人物卡/世界观硬规则——后者复用 `memory.assemble`
+    的 `stable_core`(世界观硬规则/定型主角/文风) + `volatile`(注入卡片/伏笔/近况)。
+    纯拼接、无随机/时间戳 → 同输入同输出，便于单测与缓存。
+    """
+    return (
+        "## 审稿材料：作品真相源（硬规则 / 人物卡 / 近况）\n"
+        f"{stable_core}\n\n{volatile}\n\n"
+        "## 待审本章草稿\n"
+        f"{draft}"
+    )
+
+
+def build_review_request(spec: AgentSpec, state: ChapterState) -> LlmRequest:
+    """据 spec + 审稿上下文构造审稿请求（纯函数）。
+
+    `spec.system_prompt` → `system` 缓存断点前块（cache=True，不变量 #9）；
+    `review_context`（草稿 + 近况材料）→ `input`（断点后）。续审用 `run()` 非 `stream()`。
+    """
+    return LlmRequest(
+        tier=spec.tier,  # 不变量 #2：只传档位，不传 model
+        system=[Block(text=spec.system_prompt, cache=True)],
+        input=state["review_context"],
+        output_schema=spec.output_schema,
+        scope=Scope(user_id=state["user_id"], project_id=state["project_id"]),
+    )
+
+
+def make_review_node(spec: AgentSpec, gateway: GatewayRun) -> BoundReviewNode:
+    """工厂：把一个审稿 `AgentSpec` + 网关包成 LangGraph 节点 `async (state) -> dict`。
+
+    网关经闭包绑定（langgraph 不收 functools.partial，见 gotcha；用 `async def` 闭包）。
+    节点产 `{"reviews": {spec.name: {...}}}`——结构化结果回到 state（**只读不写库**，
+    不变量 #3）。`run_review` 是裸函数（显式 gateway 关键字），供直接单测注入 mock。
+    T2.5 若想「直接跑某审」可用本工厂或 `run_review`。
+    """
+
+    async def _node(state: ChapterState) -> dict[str, Any]:
+        return await run_review(spec, state, gateway=gateway)
+
+    return _node
+
+
+async def run_review(
+    spec: AgentSpec,
+    state: ChapterState,
+    *,
+    gateway: GatewayRun,
+) -> dict[str, Any]:
+    """跑单个审稿：构请求 → `gateway.run` → 归一为 `{spec.name: {status, result}}`。
+
+    直接调用本函数（注入 mock 网关）即可单测，无需图运行时。
+    任一审失败 → 捕获异常、返回 `incomplete` 占位（§5.2：不阻塞其余、不毁图）。
+    返回**增量字典**（LangGraph 合并进 `state["reviews"]`），不原地改 `state`。
+    """
+    req = build_review_request(spec, state)
+    try:
+        resp = await gateway.run(req)
+    except Exception as exc:  # noqa: BLE001 — 该审失败隔离：标未完成，不上抛（§5.2）
+        log.warning(
+            "review_node_incomplete",
+            review=spec.name,
+            project_id=str(state["project_id"]),
+            chapter_no=state["chapter_no"],
+            error=str(exc),
+        )
+        return {"reviews": {spec.name: {"status": REVIEW_INCOMPLETE, "result": None}}}
+
+    parsed = resp.parsed
+    result = parsed.model_dump() if parsed is not None else None
+    return {"reviews": {spec.name: {"status": REVIEW_OK, "result": result}}}
--- a/tests/test_m2_e2e.py
+++ b/tests/test_m2_e2e.py
@@ -0,0 +1,473 @@
+"""M2 端到端：写 → 审(一致性) → 裁决 → 验收(事务) → 摘要入库（真实 DB，零 token）。
+
+证明 M2 闭环（不变量 #3/#4/#5）：
+  `POST /projects` → `POST .../draft`(SSE) → `PUT .../draft`(自动保存)
+  → `POST .../review`(SSE，产 ≥1 冲突) → `GET .../reviews`(留痕)
+  → `POST .../accept`(**残缺裁决 → 409 CONFLICT_UNRESOLVED，未写库**)
+  → `POST .../accept`(**全量裁决 + 终稿 → 200**)
+且 DB 为唯一真源：`chapters`(草稿+accepted 多版本) / `chapter_digests`(从**终稿**提炼) /
+`chapter_reviews`(裁决留痕) / `usage_ledger`(写/审/digest 三档位记账各落库)。
+
+确定性 & 零成本（同 M1）：真实 `Gateway` + 假适配器（吐固定 `Delta`/`parsed`，绝不联网）
+ 真实 `SqlAlchemyLedgerSink`（用量记账闭环也被走通）。无 pg → skip。
+
+M2 多档位 + 结构化输出：假适配器据 `req.output_schema` 分支——
+- writer/stream → 固定 token；
+- analyst/run（`ContinuityReview`）→ 故意产 ≥1 `Conflict`（测裁决 + gate）；
+- light/run（`ChapterDigestFacts`）→ facts 内容可追溯到**终稿**（验证 digest 从终稿非草稿，#4）。
+
+坑（见 memory/gotchas）：
+- `LifespanManager` 触发 lifespan → `seed_stub_user`（owner_id FK 依赖它）。
+- `get_sessionmaker` engine 绑定首个 loop → 每 DB 测试清缓存重建、结束 dispose。
+- 网关 ledger / 验收-side repos 只 flush；端点/验收事务 commit → usage_ledger/留痕方落库。
+- ASGITransport `raise_app_exceptions=True`：gate 409 是 `AppError` → 正常返回信封（不上抛）。
+"""
+
+from __future__ import annotations
+
+import json
+import uuid
+from collections.abc import AsyncIterator, Callable
+from typing import Annotated
+
+import httpx
+import pytest
+from asgi_lifespan import LifespanManager
+from fastapi import Depends
+from sqlalchemy import delete, select
+from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker
+from ww_agents import Conflict, ContinuityReview
+from ww_api.services.digest_extraction import ChapterDigestFacts
+from ww_db import get_session, get_sessionmaker
+from ww_db.models import (
+    Chapter,
+    ChapterDigest,
+    ChapterReview,
+    Project,
+    UsageLedger,
+)
+from ww_llm_gateway import (
+    Gateway,
+    SqlAlchemyLedgerSink,
+    resolve_route,
+)
+from ww_llm_gateway.adapters.base import (
+    Capabilities,
+    ProviderResult,
+    ProviderUsage,
+    StreamChunk,
+)
+from ww_llm_gateway.types import LlmRequest
+
+# 三档位（writer/analyst/light）默认都路由到 deepseek（config.tier_defaults）。
+_PROVIDER = "deepseek"
+
+# 确定性流式写章 token。
+_TOKENS = ["第", "一", "章", "：", "试炼之始。"]
+
+# 续审故意产的固定冲突（≥1 → 触发裁决 + gate）。
+_CONFLICT = Conflict(
+    type="设定违例",
+    where="第3段：主角施展禁术",
+    refs=["世界观·禁术条目", "第1章"],
+    suggestion="改为消耗灵力的普通法术，符合前文设定",
+)
+
+# 终稿里可被 digest 追溯的标记串（验证 digest 从终稿提炼，不变量 #4）。
+_FINAL_MARKER = "终稿独有事件：主角在第十章觉醒血脉"
+
+# 各档位假用量（喂记账；证明三档位用量闭环各自落库）。
+_USAGE = {
+    "writer": ProviderUsage(input_tokens=11, output_tokens=5),
+    "analyst": ProviderUsage(input_tokens=23, output_tokens=7),
+    "light": ProviderUsage(input_tokens=17, output_tokens=9),
+}
+
+
+class _FakeMultiTierAdapter:
+    """实现 `ProviderAdapter` Protocol：按调用形态/`output_schema` 分支，绝不联网。
+
+    - `stream()`：吐固定写章 token（writer/draft）。
+    - `complete()`：据 `req.output_schema` 返回对应 `parsed`：
+      `ContinuityReview`（续审，产固定冲突）/ `ChapterDigestFacts`（digest，追溯终稿）。
+    每路均带 `ProviderUsage` → 网关据此各落一条 usage_ledger。
+    """
+
+    provider = _PROVIDER
+
+    def __init__(self, *, conflicts: list[Conflict] | None = None) -> None:
+        # 可配冲突数（主用例 ≥1；零冲突直通用例传 []）。
+        self._conflicts = [_CONFLICT] if conflicts is None else conflicts
+
+    def capabilities(self) -> Capabilities:
+        return Capabilities(structured_output=True)
+
+    async def complete(self, req: LlmRequest, model: str) -> ProviderResult:
+        if req.output_schema is ContinuityReview:
+            review = ContinuityReview(conflicts=list(self._conflicts))
+            return ProviderResult(
+                text=review.model_dump_json(),
+                parsed=review,
+                usage=_USAGE["analyst"],
+            )
+        # 否则视为 digest 提炼（ChapterDigestFacts）：把终稿标记塞进 summary →
+        # 断言 digest 来自终稿（非审稿草稿，不变量 #4）。
+        facts = ChapterDigestFacts(
+            summary=_FINAL_MARKER,
+            events=["主角觉醒"],
+            locations=["试炼之地"],
+        )
+        return ProviderResult(
+            text=facts.model_dump_json(),
+            parsed=facts,
+            usage=_USAGE["light"],
+        )
+
+    async def stream(self, req: LlmRequest, model: str) -> AsyncIterator[StreamChunk]:
+        for token in _TOKENS:
+            yield StreamChunk(text=token)
+        yield StreamChunk(usage=_USAGE["writer"])
+
+
+@pytest.fixture
+async def e2e_sm() -> AsyncIterator[async_sessionmaker[AsyncSession]]:
+    """真实 DB session 工厂；无 pg 时跳过（每测试清缓存重建 engine、结束 dispose）。"""
+    get_sessionmaker.cache_clear()
+    maker = get_sessionmaker()
+    try:
+        async with maker() as probe:
+            await probe.execute(select(1))
+    except Exception:
+        pytest.skip("postgres not reachable")
+    yield maker
+    await maker.kw["bind"].dispose()
+    get_sessionmaker.cache_clear()
+
+
+def _parse_sse(raw: str) -> list[tuple[str, str]]:
+    """把 text/event-stream 原文解析为 `(event, data)` 帧列表。"""
+    frames: list[tuple[str, str]] = []
+    event: str | None = None
+    data: str | None = None
+    for line in raw.splitlines():
+        if line.startswith("event:"):
+            event = line[len("event:") :].strip()
+        elif line.startswith("data:"):
+            data = line[len("data:") :].strip()
+        elif line == "":
+            if event is not None and data is not None:
+                frames.append((event, data))
+            event, data = None, None
+    if event is not None and data is not None:
+        frames.append((event, data))
+    return frames
+
+
+def _gateway_override_factory(
+    adapter: _FakeMultiTierAdapter,
+) -> Callable[[AsyncSession], Gateway]:
+    """构造一个依赖覆盖：真实 Gateway + 给定假适配器 + 真实 ledger（请求 session）。
+
+    ledger 用**请求 session**（`Depends(get_session)`，FastAPI 按请求缓存，与端点/验收
+    事务同一实例）→ 由端点流末 / 验收事务的 `commit()` 落库（同 M1 回归校验）。
+    """
+
+    def _override(session: Annotated[AsyncSession, Depends(get_session)]) -> Gateway:
+        return Gateway(
+            adapters={_PROVIDER: adapter},
+            ledger=SqlAlchemyLedgerSink(session),
+            resolver=resolve_route,
+        )
+
+    return _override
+
+
+async def _cleanup(e2e_sm: async_sessionmaker[AsyncSession], project_uuid: uuid.UUID) -> None:
+    """按 FK 顺序清理（无级联的先删，再删 project；chapters/digests/reviews 经 FK 级联）。"""
+    async with e2e_sm() as cleanup:
+        await cleanup.execute(delete(UsageLedger).where(UsageLedger.project_id == project_uuid))
+        await cleanup.execute(delete(ChapterDigest).where(ChapterDigest.project_id == project_uuid))
+        await cleanup.execute(delete(ChapterReview).where(ChapterReview.project_id == project_uuid))
+        await cleanup.execute(delete(Chapter).where(Chapter.project_id == project_uuid))
+        await cleanup.execute(delete(Project).where(Project.id == project_uuid))
+        await cleanup.commit()
+
+
+async def test_m2_closed_loop_write_review_adjudicate_accept_digest(
+    e2e_sm: async_sessionmaker[AsyncSession],
+) -> None:
+    from ww_api.main import create_app
+    from ww_api.services.project_deps import (
+        get_digest_gateway,
+        get_review_gateway,
+        get_writer_gateway,
+    )
+
+    adapter = _FakeMultiTierAdapter()  # 默认产 1 个冲突
+    override = _gateway_override_factory(adapter)
+
+    app = create_app()
+    # 三档位网关均经 override 注入（真实 Gateway + 同一假适配器 + 真实 ledger）。
+    app.dependency_overrides[get_writer_gateway] = override
+    app.dependency_overrides[get_review_gateway] = override
+    app.dependency_overrides[get_digest_gateway] = override
+
+    transport = httpx.ASGITransport(app=app)
+    project_uuid: uuid.UUID | None = None
+    try:
+        async with LifespanManager(app):
+            async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
+                # 1) 立项 → 201。
+                title = "M2 E2E 闭环验证作品"
+                create_resp = await client.post(
+                    "/projects",
+                    json={"title": title, "genre": "玄幻", "logline": "少年试炼"},
+                )
+                assert create_resp.status_code == 201
+                project_id = create_resp.json()["id"]
+                project_uuid = uuid.UUID(project_id)
+
+                # 2) 流式写章草稿（SSE）→ 重组文本。
+                draft_resp = await client.post(f"/projects/{project_id}/chapters/1/draft")
+                assert draft_resp.status_code == 200
+                frames = _parse_sse(draft_resp.text)
+                token_frames = [d for (ev, d) in frames if ev == "token"]
+                assert [d for (ev, d) in frames if ev == "error"] == []
+                assert len([d for (ev, d) in frames if ev == "done"]) == 1
+                draft_text = "".join(json.loads(d)["text"] for d in token_frames)
+                assert draft_text == "".join(_TOKENS)
+
+                # 自动保存草稿（version=1, status='draft'）。
+                save_resp = await client.put(
+                    f"/projects/{project_id}/chapters/1/draft",
+                    json={"text": draft_text},
+                )
+                assert save_resp.status_code == 200
+                assert save_resp.json()["version"] == 1
+                assert save_resp.json()["status"] == "draft"
+
+                # 3) 续审（SSE，body draft=当前草稿）→ ≥1 section(continuity,done) +
+                #    ≥1 conflict + 1 done、无 error。
+                review_resp = await client.post(
+                    f"/projects/{project_id}/chapters/1/review",
+                    json={"draft": draft_text},
+                )
+                assert review_resp.status_code == 200
+                assert review_resp.headers["content-type"].startswith("text/event-stream")
+                rframes = _parse_sse(review_resp.text)
+                section_frames = [json.loads(d) for (ev, d) in rframes if ev == "section"]
+                conflict_frames = [json.loads(d) for (ev, d) in rframes if ev == "conflict"]
+                rdone = [d for (ev, d) in rframes if ev == "done"]
+                rerror = [d for (ev, d) in rframes if ev == "error"]
+                assert rerror == []
+                assert len(rdone) == 1
+                continuity_sections = [
+                    s
+                    for s in section_frames
+                    if s.get("name") == "continuity" and s.get("status") == "done"
+                ]
+                assert len(continuity_sections) >= 1
+                assert len(conflict_frames) >= 1
+                assert conflict_frames[0]["type"] == _CONFLICT.type
+                assert conflict_frames[0]["suggestion"] == _CONFLICT.suggestion
+
+                # 4) GET 历史含刚落的留痕（conflicts 非空、decisions 为空）。
+                hist_resp = await client.get(f"/projects/{project_id}/chapters/1/reviews")
+                assert hist_resp.status_code == 200
+                reviews = hist_resp.json()["reviews"]
+                assert len(reviews) >= 1
+                latest = reviews[0]
+                assert len(latest["conflicts"]) >= 1
+                assert latest["decisions"] is None
+
+                # 5) 冲突 gate（未决禁验收）：残缺裁决（空 decisions，缺 conflict_index=0）
+                #    → 409 CONFLICT_UNRESOLVED，details 命中缺项。
+                final_text = draft_text + "\n\n" + _FINAL_MARKER
+                gate_resp = await client.post(
+                    f"/projects/{project_id}/chapters/1/accept",
+                    json={"final_text": final_text, "decisions": []},
+                )
+                assert gate_resp.status_code == 409
+                gate_body = gate_resp.json()
+                assert gate_body["error"]["code"] == "CONFLICT_UNRESOLVED"
+                details = gate_body["error"]["details"]
+                assert 0 in details["missing_conflict_indices"]
+                assert details["conflict_count"] >= 1
+
+                # 6) 完整验收：全量裁决 + 终稿（与草稿不同，验证 #4）→ 200。
+                accept_resp = await client.post(
+                    f"/projects/{project_id}/chapters/1/accept",
+                    json={
+                        "final_text": final_text,
+                        "decisions": [
+                            {"conflict_index": 0, "verdict": "accept", "note": "采纳改法"}
+                        ],
+                    },
+                )
+                assert accept_resp.status_code == 200
+                acc = accept_resp.json()
+                assert acc["accepted_version"] == 2  # 草稿 v1 + accepted v2
+                assert acc["digest_added"] is True
+                assert acc["decisions_recorded"] == 1
+                assert acc["review_id"] is not None
+
+        # 7) DB 真源断言（经 e2e session）。
+        assert project_uuid is not None
+        async with e2e_sm() as verify:
+            # chapters：草稿 v1 仍在 + 新增 accepted v2（content==final_text）。
+            chapter_rows = (
+                (
+                    await verify.execute(
+                        select(Chapter)
+                        .where(Chapter.project_id == project_uuid)
+                        .order_by(Chapter.version)
+                    )
+                )
+                .scalars()
+                .all()
+            )
+            assert len(chapter_rows) == 2
+            draft_row, accepted_row = chapter_rows[0], chapter_rows[1]
+            assert draft_row.version == 1
+            assert draft_row.status == "draft"
+            assert draft_row.content == draft_text
+            assert accepted_row.version == 2
+            assert accepted_row.status == "accepted"
+            assert accepted_row.content == final_text
+
+            # chapter_digests：append 一行，facts 可追溯到**终稿**（#4：summary 含终稿标记）。
+            digest_rows = (
+                (
+                    await verify.execute(
+                        select(ChapterDigest).where(ChapterDigest.project_id == project_uuid)
+                    )
+                )
+                .scalars()
+                .all()
+            )
+            assert len(digest_rows) == 1
+            digest_facts = digest_rows[0].facts
+            assert digest_facts["summary"] == _FINAL_MARKER
+            # 终稿标记不在草稿里 → 证明 digest 从终稿而非审稿草稿提炼。
+            assert _FINAL_MARKER not in draft_text
+
+            # chapter_reviews：留痕行 decisions 已写（裁决留痕）。
+            review_rows = (
+                (
+                    await verify.execute(
+                        select(ChapterReview).where(ChapterReview.project_id == project_uuid)
+                    )
+                )
+                .scalars()
+                .all()
+            )
+            assert len(review_rows) == 1
+            assert len(review_rows[0].conflicts) >= 1
+            decisions = review_rows[0].decisions
+            assert decisions is not None
+            assert decisions["items"][0]["conflict_index"] == 0
+            assert decisions["items"][0]["verdict"] == "accept"
+
+            # usage_ledger：写章 + 续审 + digest 提炼三档位各记一条（≥3）。
+            ledger_rows = (
+                (
+                    await verify.execute(
+                        select(UsageLedger).where(UsageLedger.project_id == project_uuid)
+                    )
+                )
+                .scalars()
+                .all()
+            )
+            assert len(ledger_rows) >= 3
+            # 三档位 input_tokens 各异 → 验证各档位调用都真落库（事务已 commit）。
+            input_token_set = {r.input_tokens for r in ledger_rows}
+            assert _USAGE["writer"].input_tokens in input_token_set
+            assert _USAGE["analyst"].input_tokens in input_token_set
+            assert _USAGE["light"].input_tokens in input_token_set
+    finally:
+        if project_uuid is not None:
+            await _cleanup(e2e_sm, project_uuid)
+
+
+async def test_m2_zero_conflict_accept_passes_gate_directly(
+    e2e_sm: async_sessionmaker[AsyncSession],
+) -> None:
+    """零冲突直通：续审产 conflicts=[] → 空裁决 accept 直接 200（gate 直通）。"""
+    from ww_api.main import create_app
+    from ww_api.services.project_deps import (
+        get_digest_gateway,
+        get_review_gateway,
+        get_writer_gateway,
+    )
+
+    adapter = _FakeMultiTierAdapter(conflicts=[])  # 零冲突路径
+    override = _gateway_override_factory(adapter)
+
+    app = create_app()
+    app.dependency_overrides[get_writer_gateway] = override
+    app.dependency_overrides[get_review_gateway] = override
+    app.dependency_overrides[get_digest_gateway] = override
+
+    transport = httpx.ASGITransport(app=app)
+    project_uuid: uuid.UUID | None = None
+    try:
+        async with LifespanManager(app):
+            async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
+                create_resp = await client.post("/projects", json={"title": "M2 零冲突直通作品"})
+                assert create_resp.status_code == 201
+                project_id = create_resp.json()["id"]
+                project_uuid = uuid.UUID(project_id)
+
+                draft_resp = await client.post(f"/projects/{project_id}/chapters/1/draft")
+                draft_text = "".join(
+                    json.loads(d)["text"]
+                    for (ev, d) in _parse_sse(draft_resp.text)
+                    if ev == "token"
+                )
+                await client.put(
+                    f"/projects/{project_id}/chapters/1/draft",
+                    json={"text": draft_text},
+                )
+
+                # 续审产零冲突 → 留痕 conflicts=[]。
+                review_resp = await client.post(
+                    f"/projects/{project_id}/chapters/1/review",
+                    json={"draft": draft_text},
+                )
+                assert review_resp.status_code == 200
+                rframes = _parse_sse(review_resp.text)
+                assert [d for (ev, d) in rframes if ev == "conflict"] == []
+
+                # 空裁决 accept → gate 直通 200。
+                final_text = draft_text + "\n" + _FINAL_MARKER
+                accept_resp = await client.post(
+                    f"/projects/{project_id}/chapters/1/accept",
+                    json={"final_text": final_text, "decisions": []},
+                )
+                assert accept_resp.status_code == 200
+                acc = accept_resp.json()
+                assert acc["accepted_version"] == 2
+                assert acc["digest_added"] is True
+                assert acc["decisions_recorded"] == 0
+
+        # DB 断言：accepted 行落库、digest 从终稿。
+        assert project_uuid is not None
+        async with e2e_sm() as verify:
+            accepted = (
+                await verify.execute(
+                    select(Chapter).where(
+                        Chapter.project_id == project_uuid,
+                        Chapter.status == "accepted",
+                    )
+                )
+            ).scalar_one()
+            assert accepted.content == final_text
+            digest = (
+                await verify.execute(
+                    select(ChapterDigest).where(ChapterDigest.project_id == project_uuid)
+                )
+            ).scalar_one()
+            assert digest.facts["summary"] == _FINAL_MARKER
+    finally:
+        if project_uuid is not None:
+            await _cleanup(e2e_sm, project_uuid)