feat: M4 文风 + M5 生成/多provider/Skill + Kimi Code 订阅接入 + 本地联调修复

M4（文风）: style-auditor 双轨（提取指纹/漂移第四审）+ jobs 长任务框架(zombie reaper) + 回炉 refine + GET /style read-back。
M5（生成+扩展）: worldbuilder/character-gen（入库 continuity 409 gate + partition_writes 白名单 + schema→JSONB 形变）；
  网关多 provider 回退链/熔断/能力降级（Anthropic/Gemini 适配器）；Skill registry + 表权限沙箱 + 规则；
  前端 角色生成器/世界观/Codex/规则页/技能库/⌘K 命令面板。
K1（Kimi Code 订阅接入）: OAuth device-flow（kimi-code）+ 静态 Console key（kimi-code-key）两路径；
  coding 端点 KimiCLI 伪造头（实测 UA allow-list 门禁，缺则 403）+ JSON 模式结构化（thinking ⊥ tool_choice）。
本地联调修复: CORS 中间件；assemble 注入 premise+「写第N章」指令（修空 prompt 400）；
  GET /outline·/draft read-back + 大纲/工作台/审稿页重载；写页 client/server 常量边界 + notFound 健壮化；
  字数 toLocaleString locale 水合；审稿页终稿从已存草稿 seed（修 accept 422）。
门禁: backend ruff/mypy(157)/alembic 无漂移/pytest 451 · frontend lint/tsc/vitest/build。

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/web/lib/review/sse.ts

@@ -42,6 +42,18 @@ export interface PaceReport {
   beat_map: number[];
 }
 
+// 文风漂移（第四审，C4 扩 T4.2）：整体相似度 score + 段级漂移。
+export interface StyleDriftSegment {
+  idx: number;
+  score: number;
+  label: string | null;
+}
+
+export interface StyleDriftReport {
+  score: number;
+  segments: StyleDriftSegment[];
+}
+
 export interface SectionEvent {
   event: "section";
   data: { name: string; status: SectionStatus };
@@ -68,6 +80,17 @@ export interface PaceEvent {
     beat_map: number[];
   };
 }
+export interface StyleEvent {
+  event: "style";
+  data: {
+    score: number;
+    segments: {
+      idx: number;
+      score: number;
+      label?: string | null;
+    }[];
+  };
+}
 export interface DoneEvent {
   event: "done";
   data: { length: number };
@@ -81,6 +104,7 @@ export type ReviewSseEvent =
   | ConflictEvent
   | ForeshadowEvent
   | PaceEvent
+  | StyleEvent
   | DoneEvent
   | ErrorEvent;
 
@@ -89,6 +113,7 @@ const KNOWN_EVENTS = new Set([
   "conflict",
   "foreshadow",
   "pace",
+  "style",
   "done",
   "error",
 ]);
@@ -160,6 +185,7 @@ export interface ReviewStreamState {
   conflicts: ReviewConflict[];
   foreshadow: ForeshadowSuggestion[];
   pace: PaceReport | null;
+  style: StyleDriftReport | null;
   error: { code: string; message: string; request_id?: string | null } | null;
 }
 
@@ -169,6 +195,7 @@ export const initialReviewState: ReviewStreamState = {
   conflicts: [],
   foreshadow: [],
   pace: null,
+  style: null,
   error: null,
 };
 
@@ -202,6 +229,19 @@ export function reduceReview(
         phase: "reviewing",
         pace: { ...event.data },
       };
+    case "style":
+      return {
+        ...state,
+        phase: "reviewing",
+        style: {
+          score: event.data.score,
+          segments: event.data.segments.map((s) => ({
+            idx: s.idx,
+            score: s.score,
+            label: s.label ?? null,
+          })),
+        },
+      };
     case "done":
       return { ...state, phase: "done" };
     case "error":

apps/web/lib/review/style-sse.test.ts

@@ -0,0 +1,70 @@
+import { describe, expect, it } from "vitest";
+
+import {
+  initialReviewState,
+  parseReviewBlock,
+  reduceReview,
+  type ReviewSseEvent,
+} from "./sse";
+
+describe("parseReviewBlock — style (C4 扩 T4.2)", () => {
+  it("parses a style frame", () => {
+    const evt = parseReviewBlock(
+      'event:style\ndata:{"score":87,"segments":[{"idx":3,"score":60,"label":"口语化"}]}',
+    );
+    expect(evt).toEqual({
+      event: "style",
+      data: {
+        score: 87,
+        segments: [{ idx: 3, score: 60, label: "口语化" }],
+      },
+    });
+  });
+
+  it("parses a degrade态 style frame (无指纹 score=100/空段)", () => {
+    expect(parseReviewBlock('event:style\ndata:{"score":100,"segments":[]}')).toEqual(
+      { event: "style", data: { score: 100, segments: [] } },
+    );
+  });
+});
+
+describe("reduceReview — style (replace-style like pace)", () => {
+  it("sets style report and marks reviewing", () => {
+    const evt: ReviewSseEvent = {
+      event: "style",
+      data: { score: 80, segments: [{ idx: 1, score: 50, label: "突兀" }] },
+    };
+    const out = reduceReview(initialReviewState, evt);
+    expect(out.phase).toBe("reviewing");
+    expect(out.style).toEqual({
+      score: 80,
+      segments: [{ idx: 1, score: 50, label: "突兀" }],
+    });
+  });
+
+  it("replaces (not accumulates) the style report and defaults label null", () => {
+    const first = reduceReview(initialReviewState, {
+      event: "style",
+      data: { score: 70, segments: [{ idx: 0, score: 40 }] },
+    });
+    const second = reduceReview(first, {
+      event: "style",
+      data: { score: 95, segments: [] },
+    });
+    expect(first.style?.segments[0]).toEqual({ idx: 0, score: 40, label: null });
+    expect(second.style).toEqual({ score: 95, segments: [] });
+  });
+
+  it("leaves style untouched on a section event", () => {
+    const seeded = reduceReview(initialReviewState, {
+      event: "style",
+      data: { score: 88, segments: [] },
+    });
+    const out = reduceReview(seeded, {
+      event: "section",
+      data: { name: "style", status: "done" },
+    });
+    expect(out.style).toEqual({ score: 88, segments: [] });
+    expect(out.sections).toEqual([{ name: "style", status: "done" }]);
+  });
+});

apps/web/lib/review/useReviewStream.ts

@@ -11,12 +11,14 @@ import {
   type PaceReport,
   type ReviewConflict,
   type ReviewStreamState,
+  type StyleDriftReport,
 } from "./sse";
 
 export interface ReviewSeed {
   conflicts: ReviewConflict[];
   foreshadow: ForeshadowSuggestion[];
   pace: PaceReport | null;
+  style: StyleDriftReport | null;
 }
 
 type Action =
@@ -46,6 +48,7 @@ function reducer(state: ReviewStreamState, action: Action): ReviewStreamState {
         conflicts: action.seed.conflicts,
         foreshadow: action.seed.foreshadow,
         pace: action.seed.pace,
+        style: action.seed.style,
       };
     default:
       return state;